/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/barrier.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2abb09bbbae98a04ae2fcc735832bfdba44f6fbc-2abb09b [2021-06-05 22:20:32,653 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 22:20:32,654 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 22:20:32,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 22:20:32,709 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-06-05 22:20:32,726 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 22:20:32,727 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 22:20:32,727 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 22:20:32,727 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 22:20:32,728 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 22:20:32,728 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 22:20:32,728 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 22:20:32,728 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 22:20:32,728 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 22:20:32,728 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 22:20:32,728 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 22:20:32,728 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 22:20:32,728 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 22:20:32,728 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 22:20:32,729 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 22:20:32,729 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 22:20:32,729 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 22:20:32,729 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 22:20:32,729 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 22:20:32,729 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 22:20:32,729 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 22:20:32,729 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 22:20:32,729 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 22:20:32,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 22:20:32,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 22:20:32,730 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 22:20:32,730 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 22:20:32,730 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 22:20:32,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 22:20:32,730 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 22:20:32,730 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 22:20:32,730 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 22:20:32,977 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 22:20:32,989 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 22:20:32,991 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 22:20:32,991 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-05 22:20:32,994 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-05 22:20:32,994 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/barrier.wvr.bpl [2021-06-05 22:20:32,994 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/barrier.wvr.bpl' [2021-06-05 22:20:33,025 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 22:20:33,027 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-05 22:20:33,027 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 22:20:33,027 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 22:20:33,027 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 22:20:33,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:20:33" (1/1) ... [2021-06-05 22:20:33,043 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:20:33" (1/1) ... [2021-06-05 22:20:33,048 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 22:20:33,049 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 22:20:33,050 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 22:20:33,050 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 22:20:33,055 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:20:33" (1/1) ... [2021-06-05 22:20:33,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:20:33" (1/1) ... [2021-06-05 22:20:33,056 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:20:33" (1/1) ... [2021-06-05 22:20:33,056 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:20:33" (1/1) ... [2021-06-05 22:20:33,058 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:20:33" (1/1) ... [2021-06-05 22:20:33,058 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:20:33" (1/1) ... [2021-06-05 22:20:33,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:20:33" (1/1) ... [2021-06-05 22:20:33,059 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 22:20:33,060 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 22:20:33,060 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 22:20:33,060 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 22:20:33,062 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:20:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 22:20:33,115 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-05 22:20:33,115 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-05 22:20:33,115 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-05 22:20:33,115 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-05 22:20:33,115 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-05 22:20:33,115 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-05 22:20:33,115 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-05 22:20:33,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 22:20:33,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 22:20:33,116 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-05 22:20:33,116 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-05 22:20:33,116 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-05 22:20:33,116 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-06-05 22:20:33,116 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-06-05 22:20:33,116 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-06-05 22:20:33,116 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-06-05 22:20:33,116 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-06-05 22:20:33,117 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-06-05 22:20:33,117 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2021-06-05 22:20:33,117 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2021-06-05 22:20:33,117 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2021-06-05 22:20:33,117 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 22:20:33,260 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 22:20:33,260 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-05 22:20:33,261 INFO L202 PluginConnector]: Adding new model barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 10:20:33 BoogieIcfgContainer [2021-06-05 22:20:33,261 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 22:20:33,263 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 22:20:33,263 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 22:20:33,264 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 22:20:33,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:20:33" (1/2) ... [2021-06-05 22:20:33,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c08ebe8 and model type barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 10:20:33, skipping insertion in model container [2021-06-05 22:20:33,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 10:20:33" (2/2) ... [2021-06-05 22:20:33,266 INFO L111 eAbstractionObserver]: Analyzing ICFG barrier.wvr.bpl [2021-06-05 22:20:33,269 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 22:20:33,270 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 22:20:33,270 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 22:20:33,270 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 22:20:33,399 INFO L149 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2021-06-05 22:20:33,414 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-05 22:20:33,426 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 22:20:33,426 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 22:20:33,426 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 22:20:33,426 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 22:20:33,426 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 22:20:33,426 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 22:20:33,427 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 22:20:33,427 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == thread4Thread1of1ForFork4======== [2021-06-05 22:20:33,433 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 80 places, 65 transitions, 202 flow [2021-06-05 22:20:33,747 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 7231 states, 7229 states have (on average 3.6692488587633143) internal successors, (26525), 7230 states have internal predecessors, (26525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:20:33,779 INFO L276 IsEmpty]: Start isEmpty. Operand has 7231 states, 7229 states have (on average 3.6692488587633143) internal successors, (26525), 7230 states have internal predecessors, (26525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:20:33,822 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 22:20:33,823 INFO L301 ceAbstractionStarter]: Result for error location thread4Thread1of1ForFork4 was SAFE (1/5) [2021-06-05 22:20:33,826 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-05 22:20:33,834 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 22:20:33,834 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 22:20:33,835 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 22:20:33,835 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 22:20:33,835 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 22:20:33,835 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 22:20:33,835 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 22:20:33,835 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == thread1======== [2021-06-05 22:20:33,840 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 80 places, 65 transitions, 202 flow [2021-06-05 22:20:34,116 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 7231 states, 7229 states have (on average 3.6692488587633143) internal successors, (26525), 7230 states have internal predecessors, (26525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:20:34,129 INFO L276 IsEmpty]: Start isEmpty. Operand has 7231 states, 7229 states have (on average 3.6692488587633143) internal successors, (26525), 7230 states have internal predecessors, (26525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:20:34,149 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 22:20:34,151 INFO L301 ceAbstractionStarter]: Result for error location thread1 was SAFE (2/5) [2021-06-05 22:20:34,151 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-05 22:20:34,159 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 22:20:34,159 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 22:20:34,160 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 22:20:34,160 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 22:20:34,160 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 22:20:34,160 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 22:20:34,160 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 22:20:34,160 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == thread1Thread1of1ForFork2======== [2021-06-05 22:20:34,163 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 80 places, 65 transitions, 202 flow [2021-06-05 22:20:34,347 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 7231 states, 7229 states have (on average 3.6692488587633143) internal successors, (26525), 7230 states have internal predecessors, (26525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:20:34,358 INFO L276 IsEmpty]: Start isEmpty. Operand has 7231 states, 7229 states have (on average 3.6692488587633143) internal successors, (26525), 7230 states have internal predecessors, (26525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:20:34,378 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 22:20:34,379 INFO L301 ceAbstractionStarter]: Result for error location thread1Thread1of1ForFork2 was SAFE (3/5) [2021-06-05 22:20:34,379 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-05 22:20:34,381 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 22:20:34,381 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 22:20:34,381 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 22:20:34,382 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 22:20:34,382 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 22:20:34,382 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 22:20:34,382 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 22:20:34,382 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == thread4======== [2021-06-05 22:20:34,386 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 80 places, 65 transitions, 202 flow [2021-06-05 22:20:34,547 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 7231 states, 7229 states have (on average 3.6692488587633143) internal successors, (26525), 7230 states have internal predecessors, (26525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:20:34,561 INFO L276 IsEmpty]: Start isEmpty. Operand has 7231 states, 7229 states have (on average 3.6692488587633143) internal successors, (26525), 7230 states have internal predecessors, (26525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:20:34,583 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 22:20:34,584 INFO L301 ceAbstractionStarter]: Result for error location thread4 was SAFE (4/5) [2021-06-05 22:20:34,584 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-06-05 22:20:34,585 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 22:20:34,585 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 22:20:34,585 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 22:20:34,585 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 22:20:34,585 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 22:20:34,585 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 22:20:34,585 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 22:20:34,585 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-05 22:20:34,586 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 80 places, 65 transitions, 202 flow [2021-06-05 22:20:34,755 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 7231 states, 7229 states have (on average 3.6692488587633143) internal successors, (26525), 7230 states have internal predecessors, (26525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:20:34,764 INFO L276 IsEmpty]: Start isEmpty. Operand has 7231 states, 7229 states have (on average 3.6692488587633143) internal successors, (26525), 7230 states have internal predecessors, (26525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:20:34,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:20:34,789 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:20:34,789 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:20:34,790 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:20:34,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:20:34,793 INFO L82 PathProgramCache]: Analyzing trace with hash -2092743736, now seen corresponding path program 1 times [2021-06-05 22:20:34,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:20:34,799 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443778925] [2021-06-05 22:20:34,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:20:34,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:20:34,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:20:34,935 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:20:34,935 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443778925] [2021-06-05 22:20:34,935 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443778925] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:20:34,936 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:20:34,936 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 22:20:34,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886116748] [2021-06-05 22:20:34,940 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 22:20:34,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:20:34,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 22:20:34,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 22:20:34,961 INFO L87 Difference]: Start difference. First operand has 7231 states, 7229 states have (on average 3.6692488587633143) internal successors, (26525), 7230 states have internal predecessors, (26525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:20:35,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:20:35,046 INFO L93 Difference]: Finished difference Result 5614 states and 20074 transitions. [2021-06-05 22:20:35,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 22:20:35,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:20:35,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:20:35,095 INFO L225 Difference]: With dead ends: 5614 [2021-06-05 22:20:35,095 INFO L226 Difference]: Without dead ends: 5614 [2021-06-05 22:20:35,096 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 22:20:35,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5614 states. [2021-06-05 22:20:35,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5614 to 5614. [2021-06-05 22:20:35,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5614 states, 5613 states have (on average 3.5763406378050955) internal successors, (20074), 5613 states have internal predecessors, (20074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:20:35,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5614 states to 5614 states and 20074 transitions. [2021-06-05 22:20:35,343 INFO L78 Accepts]: Start accepts. Automaton has 5614 states and 20074 transitions. Word has length 47 [2021-06-05 22:20:35,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:20:35,343 INFO L482 AbstractCegarLoop]: Abstraction has 5614 states and 20074 transitions. [2021-06-05 22:20:35,344 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:20:35,344 INFO L276 IsEmpty]: Start isEmpty. Operand 5614 states and 20074 transitions. [2021-06-05 22:20:35,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:20:35,360 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:20:35,361 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:20:35,361 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 22:20:35,363 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:20:35,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:20:35,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1433116366, now seen corresponding path program 2 times [2021-06-05 22:20:35,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:20:35,367 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577799782] [2021-06-05 22:20:35,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:20:35,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:20:35,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:20:35,424 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:20:35,424 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577799782] [2021-06-05 22:20:35,424 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577799782] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:20:35,424 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:20:35,424 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 22:20:35,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414878273] [2021-06-05 22:20:35,425 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 22:20:35,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:20:35,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 22:20:35,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 22:20:35,426 INFO L87 Difference]: Start difference. First operand 5614 states and 20074 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:20:35,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:20:35,471 INFO L93 Difference]: Finished difference Result 4822 states and 17110 transitions. [2021-06-05 22:20:35,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 22:20:35,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:20:35,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:20:35,493 INFO L225 Difference]: With dead ends: 4822 [2021-06-05 22:20:35,493 INFO L226 Difference]: Without dead ends: 4822 [2021-06-05 22:20:35,494 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 22:20:35,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4822 states. [2021-06-05 22:20:35,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4822 to 4822. [2021-06-05 22:20:35,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4822 states, 4821 states have (on average 3.5490562124040657) internal successors, (17110), 4821 states have internal predecessors, (17110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:20:35,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4822 states to 4822 states and 17110 transitions. [2021-06-05 22:20:35,611 INFO L78 Accepts]: Start accepts. Automaton has 4822 states and 17110 transitions. Word has length 47 [2021-06-05 22:20:35,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:20:35,611 INFO L482 AbstractCegarLoop]: Abstraction has 4822 states and 17110 transitions. [2021-06-05 22:20:35,611 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:20:35,611 INFO L276 IsEmpty]: Start isEmpty. Operand 4822 states and 17110 transitions. [2021-06-05 22:20:35,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:20:35,623 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:20:35,623 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:20:35,623 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 22:20:35,623 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:20:35,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:20:35,623 INFO L82 PathProgramCache]: Analyzing trace with hash 283826058, now seen corresponding path program 3 times [2021-06-05 22:20:35,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:20:35,624 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801836117] [2021-06-05 22:20:35,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:20:35,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:20:36,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:20:36,144 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:20:36,144 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801836117] [2021-06-05 22:20:36,144 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801836117] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:20:36,144 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:20:36,144 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:20:36,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801375430] [2021-06-05 22:20:36,145 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:20:36,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:20:36,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:20:36,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:20:36,146 INFO L87 Difference]: Start difference. First operand 4822 states and 17110 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:20:37,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:20:37,363 INFO L93 Difference]: Finished difference Result 6172 states and 21633 transitions. [2021-06-05 22:20:37,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 22:20:37,369 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:20:37,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:20:37,404 INFO L225 Difference]: With dead ends: 6172 [2021-06-05 22:20:37,405 INFO L226 Difference]: Without dead ends: 6045 [2021-06-05 22:20:37,405 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 740.7ms TimeCoverageRelationStatistics Valid=148, Invalid=1258, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 22:20:37,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6045 states. [2021-06-05 22:20:37,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6045 to 5006. [2021-06-05 22:20:37,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5006 states, 5005 states have (on average 3.5384615384615383) internal successors, (17710), 5005 states have internal predecessors, (17710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:20:37,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5006 states to 5006 states and 17710 transitions. [2021-06-05 22:20:37,546 INFO L78 Accepts]: Start accepts. Automaton has 5006 states and 17710 transitions. Word has length 47 [2021-06-05 22:20:37,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:20:37,546 INFO L482 AbstractCegarLoop]: Abstraction has 5006 states and 17710 transitions. [2021-06-05 22:20:37,547 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:20:37,547 INFO L276 IsEmpty]: Start isEmpty. Operand 5006 states and 17710 transitions. [2021-06-05 22:20:37,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:20:37,558 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:20:37,558 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:20:37,558 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 22:20:37,558 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:20:37,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:20:37,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1066922546, now seen corresponding path program 4 times [2021-06-05 22:20:37,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:20:37,559 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716928321] [2021-06-05 22:20:37,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:20:37,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:20:37,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:20:37,810 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:20:37,810 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716928321] [2021-06-05 22:20:37,810 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716928321] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:20:37,810 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:20:37,810 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:20:37,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460147347] [2021-06-05 22:20:37,811 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:20:37,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:20:37,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:20:37,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:20:37,811 INFO L87 Difference]: Start difference. First operand 5006 states and 17710 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:20:39,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:20:39,753 INFO L93 Difference]: Finished difference Result 8462 states and 29832 transitions. [2021-06-05 22:20:39,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 22:20:39,754 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:20:39,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:20:39,776 INFO L225 Difference]: With dead ends: 8462 [2021-06-05 22:20:39,776 INFO L226 Difference]: Without dead ends: 8373 [2021-06-05 22:20:39,776 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 990.9ms TimeCoverageRelationStatistics Valid=246, Invalid=1916, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 22:20:39,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8373 states. [2021-06-05 22:20:39,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8373 to 5198. [2021-06-05 22:20:39,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5198 states, 5197 states have (on average 3.529343852222436) internal successors, (18342), 5197 states have internal predecessors, (18342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:20:39,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5198 states to 5198 states and 18342 transitions. [2021-06-05 22:20:39,913 INFO L78 Accepts]: Start accepts. Automaton has 5198 states and 18342 transitions. Word has length 47 [2021-06-05 22:20:39,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:20:39,913 INFO L482 AbstractCegarLoop]: Abstraction has 5198 states and 18342 transitions. [2021-06-05 22:20:39,913 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:20:39,913 INFO L276 IsEmpty]: Start isEmpty. Operand 5198 states and 18342 transitions. [2021-06-05 22:20:39,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:20:39,922 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:20:39,922 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:20:39,922 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 22:20:39,923 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:20:39,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:20:39,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1917574454, now seen corresponding path program 5 times [2021-06-05 22:20:39,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:20:39,923 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436196322] [2021-06-05 22:20:39,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:20:39,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:20:40,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:20:40,185 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:20:40,185 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436196322] [2021-06-05 22:20:40,185 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436196322] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:20:40,185 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:20:40,185 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:20:40,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756112370] [2021-06-05 22:20:40,186 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:20:40,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:20:40,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:20:40,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:20:40,186 INFO L87 Difference]: Start difference. First operand 5198 states and 18342 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:20:42,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:20:42,126 INFO L93 Difference]: Finished difference Result 8595 states and 30668 transitions. [2021-06-05 22:20:42,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 22:20:42,126 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:20:42,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:20:42,148 INFO L225 Difference]: With dead ends: 8595 [2021-06-05 22:20:42,148 INFO L226 Difference]: Without dead ends: 8492 [2021-06-05 22:20:42,149 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 752 ImplicationChecksByTransitivity, 1094.4ms TimeCoverageRelationStatistics Valid=311, Invalid=2769, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 22:20:42,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8492 states. [2021-06-05 22:20:42,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8492 to 5186. [2021-06-05 22:20:42,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5186 states, 5185 states have (on average 3.5305689488910317) internal successors, (18306), 5185 states have internal predecessors, (18306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:20:42,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5186 states to 5186 states and 18306 transitions. [2021-06-05 22:20:42,279 INFO L78 Accepts]: Start accepts. Automaton has 5186 states and 18306 transitions. Word has length 47 [2021-06-05 22:20:42,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:20:42,279 INFO L482 AbstractCegarLoop]: Abstraction has 5186 states and 18306 transitions. [2021-06-05 22:20:42,279 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:20:42,279 INFO L276 IsEmpty]: Start isEmpty. Operand 5186 states and 18306 transitions. [2021-06-05 22:20:42,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:20:42,291 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:20:42,291 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:20:42,292 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 22:20:42,292 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:20:42,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:20:42,292 INFO L82 PathProgramCache]: Analyzing trace with hash 258233098, now seen corresponding path program 6 times [2021-06-05 22:20:42,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:20:42,292 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432389707] [2021-06-05 22:20:42,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:20:42,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:20:42,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:20:42,509 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:20:42,509 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432389707] [2021-06-05 22:20:42,509 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432389707] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:20:42,509 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:20:42,509 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 22:20:42,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117875362] [2021-06-05 22:20:42,510 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 22:20:42,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:20:42,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 22:20:42,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2021-06-05 22:20:42,510 INFO L87 Difference]: Start difference. First operand 5186 states and 18306 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:20:44,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:20:44,126 INFO L93 Difference]: Finished difference Result 7581 states and 26484 transitions. [2021-06-05 22:20:44,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 22:20:44,126 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:20:44,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:20:44,153 INFO L225 Difference]: With dead ends: 7581 [2021-06-05 22:20:44,153 INFO L226 Difference]: Without dead ends: 7444 [2021-06-05 22:20:44,153 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 4 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 839.7ms TimeCoverageRelationStatistics Valid=249, Invalid=2007, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 22:20:44,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7444 states. [2021-06-05 22:20:44,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7444 to 5366. [2021-06-05 22:20:44,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5366 states, 5365 states have (on average 3.52022367194781) internal successors, (18886), 5365 states have internal predecessors, (18886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:20:44,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5366 states to 5366 states and 18886 transitions. [2021-06-05 22:20:44,266 INFO L78 Accepts]: Start accepts. Automaton has 5366 states and 18886 transitions. Word has length 47 [2021-06-05 22:20:44,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:20:44,266 INFO L482 AbstractCegarLoop]: Abstraction has 5366 states and 18886 transitions. [2021-06-05 22:20:44,267 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:20:44,267 INFO L276 IsEmpty]: Start isEmpty. Operand 5366 states and 18886 transitions. [2021-06-05 22:20:44,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:20:44,274 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:20:44,274 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:20:44,275 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 22:20:44,275 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:20:44,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:20:44,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1720641364, now seen corresponding path program 7 times [2021-06-05 22:20:44,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:20:44,275 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200362847] [2021-06-05 22:20:44,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:20:44,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:20:44,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:20:44,513 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:20:44,513 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200362847] [2021-06-05 22:20:44,513 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200362847] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:20:44,513 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:20:44,513 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:20:44,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431603767] [2021-06-05 22:20:44,513 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:20:44,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:20:44,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:20:44,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:20:44,514 INFO L87 Difference]: Start difference. First operand 5366 states and 18886 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:20:46,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:20:46,397 INFO L93 Difference]: Finished difference Result 8646 states and 30471 transitions. [2021-06-05 22:20:46,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 22:20:46,398 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:20:46,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:20:46,415 INFO L225 Difference]: With dead ends: 8646 [2021-06-05 22:20:46,415 INFO L226 Difference]: Without dead ends: 8557 [2021-06-05 22:20:46,416 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 1004.0ms TimeCoverageRelationStatistics Valid=294, Invalid=2358, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 22:20:46,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8557 states. [2021-06-05 22:20:46,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8557 to 5370. [2021-06-05 22:20:46,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5370 states, 5369 states have (on average 3.5190910784131124) internal successors, (18894), 5369 states have internal predecessors, (18894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:20:46,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5370 states to 5370 states and 18894 transitions. [2021-06-05 22:20:46,538 INFO L78 Accepts]: Start accepts. Automaton has 5370 states and 18894 transitions. Word has length 47 [2021-06-05 22:20:46,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:20:46,538 INFO L482 AbstractCegarLoop]: Abstraction has 5370 states and 18894 transitions. [2021-06-05 22:20:46,538 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:20:46,538 INFO L276 IsEmpty]: Start isEmpty. Operand 5370 states and 18894 transitions. [2021-06-05 22:20:46,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:20:46,546 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:20:46,546 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:20:46,546 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-05 22:20:46,546 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:20:46,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:20:46,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1723674024, now seen corresponding path program 8 times [2021-06-05 22:20:46,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:20:46,547 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11734056] [2021-06-05 22:20:46,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:20:46,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:20:46,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:20:46,762 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:20:46,762 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11734056] [2021-06-05 22:20:46,762 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11734056] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:20:46,762 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:20:46,763 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:20:46,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651614768] [2021-06-05 22:20:46,763 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:20:46,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:20:46,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:20:46,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:20:46,763 INFO L87 Difference]: Start difference. First operand 5370 states and 18894 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:20:48,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:20:48,768 INFO L93 Difference]: Finished difference Result 9233 states and 32861 transitions. [2021-06-05 22:20:48,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 22:20:48,768 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:20:48,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:20:48,786 INFO L225 Difference]: With dead ends: 9233 [2021-06-05 22:20:48,787 INFO L226 Difference]: Without dead ends: 9102 [2021-06-05 22:20:48,787 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 832 ImplicationChecksByTransitivity, 1089.1ms TimeCoverageRelationStatistics Valid=330, Invalid=2976, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 22:20:48,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9102 states. [2021-06-05 22:20:48,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9102 to 5330. [2021-06-05 22:20:48,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5330 states, 5329 states have (on average 3.5207355976731094) internal successors, (18762), 5329 states have internal predecessors, (18762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:20:48,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5330 states to 5330 states and 18762 transitions. [2021-06-05 22:20:48,947 INFO L78 Accepts]: Start accepts. Automaton has 5330 states and 18762 transitions. Word has length 47 [2021-06-05 22:20:48,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:20:48,948 INFO L482 AbstractCegarLoop]: Abstraction has 5330 states and 18762 transitions. [2021-06-05 22:20:48,948 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:20:48,948 INFO L276 IsEmpty]: Start isEmpty. Operand 5330 states and 18762 transitions. [2021-06-05 22:20:48,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:20:48,955 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:20:48,955 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:20:48,955 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-05 22:20:48,955 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:20:48,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:20:48,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1884725130, now seen corresponding path program 9 times [2021-06-05 22:20:48,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:20:48,957 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249335139] [2021-06-05 22:20:48,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:20:48,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:20:49,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:20:49,231 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:20:49,231 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249335139] [2021-06-05 22:20:49,231 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249335139] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:20:49,231 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:20:49,231 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:20:49,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028496543] [2021-06-05 22:20:49,232 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:20:49,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:20:49,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:20:49,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:20:49,232 INFO L87 Difference]: Start difference. First operand 5330 states and 18762 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:20:50,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:20:50,319 INFO L93 Difference]: Finished difference Result 6689 states and 23271 transitions. [2021-06-05 22:20:50,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 22:20:50,319 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:20:50,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:20:50,330 INFO L225 Difference]: With dead ends: 6689 [2021-06-05 22:20:50,331 INFO L226 Difference]: Without dead ends: 6562 [2021-06-05 22:20:50,331 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 631.5ms TimeCoverageRelationStatistics Valid=168, Invalid=1472, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 22:20:50,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6562 states. [2021-06-05 22:20:50,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6562 to 5342. [2021-06-05 22:20:50,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5342 states, 5341 states have (on average 3.5184422392810335) internal successors, (18792), 5341 states have internal predecessors, (18792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:20:50,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5342 states to 5342 states and 18792 transitions. [2021-06-05 22:20:50,429 INFO L78 Accepts]: Start accepts. Automaton has 5342 states and 18792 transitions. Word has length 47 [2021-06-05 22:20:50,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:20:50,430 INFO L482 AbstractCegarLoop]: Abstraction has 5342 states and 18792 transitions. [2021-06-05 22:20:50,430 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:20:50,430 INFO L276 IsEmpty]: Start isEmpty. Operand 5342 states and 18792 transitions. [2021-06-05 22:20:50,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:20:50,438 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:20:50,438 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:20:50,438 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-05 22:20:50,438 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:20:50,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:20:50,438 INFO L82 PathProgramCache]: Analyzing trace with hash 533976526, now seen corresponding path program 10 times [2021-06-05 22:20:50,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:20:50,439 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601738227] [2021-06-05 22:20:50,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:20:50,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:20:50,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:20:50,661 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:20:50,661 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601738227] [2021-06-05 22:20:50,661 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601738227] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:20:50,661 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:20:50,661 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:20:50,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838512918] [2021-06-05 22:20:50,662 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:20:50,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:20:50,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:20:50,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:20:50,662 INFO L87 Difference]: Start difference. First operand 5342 states and 18792 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:20:52,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:20:52,450 INFO L93 Difference]: Finished difference Result 8910 states and 31376 transitions. [2021-06-05 22:20:52,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 22:20:52,450 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:20:52,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:20:52,466 INFO L225 Difference]: With dead ends: 8910 [2021-06-05 22:20:52,466 INFO L226 Difference]: Without dead ends: 8821 [2021-06-05 22:20:52,467 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 946.8ms TimeCoverageRelationStatistics Valid=285, Invalid=2367, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 22:20:52,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8821 states. [2021-06-05 22:20:52,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8821 to 5358. [2021-06-05 22:20:52,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5358 states, 5357 states have (on average 3.516520440545081) internal successors, (18838), 5357 states have internal predecessors, (18838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:20:52,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5358 states to 5358 states and 18838 transitions. [2021-06-05 22:20:52,576 INFO L78 Accepts]: Start accepts. Automaton has 5358 states and 18838 transitions. Word has length 47 [2021-06-05 22:20:52,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:20:52,576 INFO L482 AbstractCegarLoop]: Abstraction has 5358 states and 18838 transitions. [2021-06-05 22:20:52,577 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:20:52,577 INFO L276 IsEmpty]: Start isEmpty. Operand 5358 states and 18838 transitions. [2021-06-05 22:20:52,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:20:52,584 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:20:52,584 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:20:52,584 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-05 22:20:52,584 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:20:52,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:20:52,585 INFO L82 PathProgramCache]: Analyzing trace with hash -316675382, now seen corresponding path program 11 times [2021-06-05 22:20:52,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:20:52,585 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834820477] [2021-06-05 22:20:52,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:20:52,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:20:52,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:20:52,803 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:20:52,804 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834820477] [2021-06-05 22:20:52,804 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834820477] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:20:52,804 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:20:52,804 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:20:52,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044090718] [2021-06-05 22:20:52,804 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:20:52,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:20:52,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:20:52,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:20:52,805 INFO L87 Difference]: Start difference. First operand 5358 states and 18838 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:20:54,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:20:54,923 INFO L93 Difference]: Finished difference Result 8807 states and 31346 transitions. [2021-06-05 22:20:54,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-05 22:20:54,923 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:20:54,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:20:54,940 INFO L225 Difference]: With dead ends: 8807 [2021-06-05 22:20:54,940 INFO L226 Difference]: Without dead ends: 8704 [2021-06-05 22:20:54,941 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1088 ImplicationChecksByTransitivity, 1266.3ms TimeCoverageRelationStatistics Valid=405, Invalid=3755, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 22:20:54,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8704 states. [2021-06-05 22:20:55,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8704 to 5338. [2021-06-05 22:20:55,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5338 states, 5337 states have (on average 3.519955030916245) internal successors, (18786), 5337 states have internal predecessors, (18786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:20:55,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5338 states to 5338 states and 18786 transitions. [2021-06-05 22:20:55,057 INFO L78 Accepts]: Start accepts. Automaton has 5338 states and 18786 transitions. Word has length 47 [2021-06-05 22:20:55,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:20:55,058 INFO L482 AbstractCegarLoop]: Abstraction has 5338 states and 18786 transitions. [2021-06-05 22:20:55,058 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:20:55,058 INFO L276 IsEmpty]: Start isEmpty. Operand 5338 states and 18786 transitions. [2021-06-05 22:20:55,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:20:55,065 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:20:55,065 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:20:55,066 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-05 22:20:55,066 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:20:55,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:20:55,066 INFO L82 PathProgramCache]: Analyzing trace with hash -868318808, now seen corresponding path program 12 times [2021-06-05 22:20:55,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:20:55,066 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847282870] [2021-06-05 22:20:55,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:20:55,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:20:55,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:20:55,273 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:20:55,273 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847282870] [2021-06-05 22:20:55,273 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847282870] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:20:55,273 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:20:55,273 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:20:55,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157177816] [2021-06-05 22:20:55,274 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:20:55,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:20:55,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:20:55,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:20:55,274 INFO L87 Difference]: Start difference. First operand 5338 states and 18786 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:20:56,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:20:56,240 INFO L93 Difference]: Finished difference Result 6388 states and 22235 transitions. [2021-06-05 22:20:56,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 22:20:56,240 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:20:56,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:20:56,251 INFO L225 Difference]: With dead ends: 6388 [2021-06-05 22:20:56,252 INFO L226 Difference]: Without dead ends: 6261 [2021-06-05 22:20:56,252 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 562.7ms TimeCoverageRelationStatistics Valid=152, Invalid=1408, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 22:20:56,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6261 states. [2021-06-05 22:20:56,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6261 to 5350. [2021-06-05 22:20:56,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5350 states, 5349 states have (on average 3.5176668536174986) internal successors, (18816), 5349 states have internal predecessors, (18816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:20:56,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5350 states to 5350 states and 18816 transitions. [2021-06-05 22:20:56,353 INFO L78 Accepts]: Start accepts. Automaton has 5350 states and 18816 transitions. Word has length 47 [2021-06-05 22:20:56,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:20:56,353 INFO L482 AbstractCegarLoop]: Abstraction has 5350 states and 18816 transitions. [2021-06-05 22:20:56,353 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:20:56,353 INFO L276 IsEmpty]: Start isEmpty. Operand 5350 states and 18816 transitions. [2021-06-05 22:20:56,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:20:56,361 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:20:56,361 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:20:56,361 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-05 22:20:56,361 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:20:56,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:20:56,362 INFO L82 PathProgramCache]: Analyzing trace with hash 959052452, now seen corresponding path program 13 times [2021-06-05 22:20:56,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:20:56,362 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343426389] [2021-06-05 22:20:56,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:20:56,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:20:56,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:20:56,568 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:20:56,568 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343426389] [2021-06-05 22:20:56,568 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343426389] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:20:56,568 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:20:56,568 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:20:56,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844203808] [2021-06-05 22:20:56,568 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:20:56,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:20:56,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:20:56,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:20:56,569 INFO L87 Difference]: Start difference. First operand 5350 states and 18816 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:20:57,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:20:57,465 INFO L93 Difference]: Finished difference Result 6457 states and 22437 transitions. [2021-06-05 22:20:57,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 22:20:57,465 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:20:57,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:20:57,477 INFO L225 Difference]: With dead ends: 6457 [2021-06-05 22:20:57,477 INFO L226 Difference]: Without dead ends: 6360 [2021-06-05 22:20:57,478 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 516.2ms TimeCoverageRelationStatistics Valid=147, Invalid=1335, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 22:20:57,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6360 states. [2021-06-05 22:20:57,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6360 to 5356. [2021-06-05 22:20:57,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5356 states, 5355 states have (on average 3.5165266106442576) internal successors, (18831), 5355 states have internal predecessors, (18831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:20:57,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5356 states to 5356 states and 18831 transitions. [2021-06-05 22:20:57,572 INFO L78 Accepts]: Start accepts. Automaton has 5356 states and 18831 transitions. Word has length 47 [2021-06-05 22:20:57,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:20:57,572 INFO L482 AbstractCegarLoop]: Abstraction has 5356 states and 18831 transitions. [2021-06-05 22:20:57,572 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:20:57,572 INFO L276 IsEmpty]: Start isEmpty. Operand 5356 states and 18831 transitions. [2021-06-05 22:20:57,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:20:57,580 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:20:57,580 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:20:57,580 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-05 22:20:57,580 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:20:57,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:20:57,580 INFO L82 PathProgramCache]: Analyzing trace with hash 961726278, now seen corresponding path program 14 times [2021-06-05 22:20:57,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:20:57,580 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783537656] [2021-06-05 22:20:57,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:20:57,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:20:57,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:20:57,809 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:20:57,809 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783537656] [2021-06-05 22:20:57,810 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783537656] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:20:57,810 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:20:57,810 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:20:57,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212948006] [2021-06-05 22:20:57,810 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:20:57,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:20:57,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:20:57,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:20:57,810 INFO L87 Difference]: Start difference. First operand 5356 states and 18831 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:20:58,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:20:58,744 INFO L93 Difference]: Finished difference Result 6358 states and 22132 transitions. [2021-06-05 22:20:58,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 22:20:58,745 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:20:58,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:20:58,755 INFO L225 Difference]: With dead ends: 6358 [2021-06-05 22:20:58,755 INFO L226 Difference]: Without dead ends: 6249 [2021-06-05 22:20:58,756 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 541.5ms TimeCoverageRelationStatistics Valid=153, Invalid=1407, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 22:20:58,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6249 states. [2021-06-05 22:20:58,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6249 to 5338. [2021-06-05 22:20:58,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5338 states, 5337 states have (on average 3.5192055461869964) internal successors, (18782), 5337 states have internal predecessors, (18782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:20:58,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5338 states to 5338 states and 18782 transitions. [2021-06-05 22:20:58,834 INFO L78 Accepts]: Start accepts. Automaton has 5338 states and 18782 transitions. Word has length 47 [2021-06-05 22:20:58,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:20:58,834 INFO L482 AbstractCegarLoop]: Abstraction has 5338 states and 18782 transitions. [2021-06-05 22:20:58,834 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:20:58,834 INFO L276 IsEmpty]: Start isEmpty. Operand 5338 states and 18782 transitions. [2021-06-05 22:20:58,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:20:58,841 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:20:58,841 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:20:58,841 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-05 22:20:58,841 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:20:58,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:20:58,842 INFO L82 PathProgramCache]: Analyzing trace with hash -346745394, now seen corresponding path program 15 times [2021-06-05 22:20:58,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:20:58,842 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608899643] [2021-06-05 22:20:58,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:20:58,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:20:59,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:20:59,032 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:20:59,032 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608899643] [2021-06-05 22:20:59,032 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608899643] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:20:59,032 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:20:59,032 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:20:59,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918295948] [2021-06-05 22:20:59,033 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:20:59,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:20:59,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:20:59,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:20:59,033 INFO L87 Difference]: Start difference. First operand 5338 states and 18782 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:00,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:21:00,209 INFO L93 Difference]: Finished difference Result 6590 states and 22853 transitions. [2021-06-05 22:21:00,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 22:21:00,210 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:21:00,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:21:00,222 INFO L225 Difference]: With dead ends: 6590 [2021-06-05 22:21:00,222 INFO L226 Difference]: Without dead ends: 6469 [2021-06-05 22:21:00,224 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 679.0ms TimeCoverageRelationStatistics Valid=201, Invalid=1869, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 22:21:00,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6469 states. [2021-06-05 22:21:00,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6469 to 5344. [2021-06-05 22:21:00,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5344 states, 5343 states have (on average 3.517686692869175) internal successors, (18795), 5343 states have internal predecessors, (18795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:00,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5344 states to 5344 states and 18795 transitions. [2021-06-05 22:21:00,314 INFO L78 Accepts]: Start accepts. Automaton has 5344 states and 18795 transitions. Word has length 47 [2021-06-05 22:21:00,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:21:00,314 INFO L482 AbstractCegarLoop]: Abstraction has 5344 states and 18795 transitions. [2021-06-05 22:21:00,314 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:00,314 INFO L276 IsEmpty]: Start isEmpty. Operand 5344 states and 18795 transitions. [2021-06-05 22:21:00,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:21:00,325 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:21:00,325 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:21:00,325 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-06-05 22:21:00,325 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:21:00,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:21:00,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1224676042, now seen corresponding path program 16 times [2021-06-05 22:21:00,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:21:00,326 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252220137] [2021-06-05 22:21:00,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:21:00,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:21:00,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:21:00,552 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:21:00,552 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252220137] [2021-06-05 22:21:00,554 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252220137] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:21:00,554 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:21:00,554 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:21:00,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978047695] [2021-06-05 22:21:00,555 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:21:00,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:21:00,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:21:00,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:21:00,555 INFO L87 Difference]: Start difference. First operand 5344 states and 18795 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:01,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:21:01,936 INFO L93 Difference]: Finished difference Result 7051 states and 24466 transitions. [2021-06-05 22:21:01,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 22:21:01,936 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:21:01,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:21:01,947 INFO L225 Difference]: With dead ends: 7051 [2021-06-05 22:21:01,948 INFO L226 Difference]: Without dead ends: 6956 [2021-06-05 22:21:01,948 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 785.6ms TimeCoverageRelationStatistics Valid=244, Invalid=2306, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 22:21:01,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6956 states. [2021-06-05 22:21:02,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6956 to 5346. [2021-06-05 22:21:02,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5346 states, 5345 states have (on average 3.517305893358279) internal successors, (18800), 5345 states have internal predecessors, (18800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:02,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5346 states to 5346 states and 18800 transitions. [2021-06-05 22:21:02,028 INFO L78 Accepts]: Start accepts. Automaton has 5346 states and 18800 transitions. Word has length 47 [2021-06-05 22:21:02,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:21:02,028 INFO L482 AbstractCegarLoop]: Abstraction has 5346 states and 18800 transitions. [2021-06-05 22:21:02,029 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:02,029 INFO L276 IsEmpty]: Start isEmpty. Operand 5346 states and 18800 transitions. [2021-06-05 22:21:02,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:21:02,035 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:21:02,035 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:21:02,035 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-06-05 22:21:02,035 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:21:02,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:21:02,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1523567720, now seen corresponding path program 17 times [2021-06-05 22:21:02,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:21:02,036 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528840833] [2021-06-05 22:21:02,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:21:02,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:21:02,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:21:02,270 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:21:02,270 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528840833] [2021-06-05 22:21:02,270 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528840833] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:21:02,270 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:21:02,270 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:21:02,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394461928] [2021-06-05 22:21:02,270 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:21:02,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:21:02,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:21:02,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:21:02,271 INFO L87 Difference]: Start difference. First operand 5346 states and 18800 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:03,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:21:03,170 INFO L93 Difference]: Finished difference Result 6453 states and 22421 transitions. [2021-06-05 22:21:03,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 22:21:03,170 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:21:03,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:21:03,181 INFO L225 Difference]: With dead ends: 6453 [2021-06-05 22:21:03,181 INFO L226 Difference]: Without dead ends: 6356 [2021-06-05 22:21:03,182 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 515.7ms TimeCoverageRelationStatistics Valid=152, Invalid=1330, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 22:21:03,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6356 states. [2021-06-05 22:21:03,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6356 to 5352. [2021-06-05 22:21:03,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5352 states, 5351 states have (on average 3.5161652027658383) internal successors, (18815), 5351 states have internal predecessors, (18815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:03,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5352 states to 5352 states and 18815 transitions. [2021-06-05 22:21:03,260 INFO L78 Accepts]: Start accepts. Automaton has 5352 states and 18815 transitions. Word has length 47 [2021-06-05 22:21:03,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:21:03,260 INFO L482 AbstractCegarLoop]: Abstraction has 5352 states and 18815 transitions. [2021-06-05 22:21:03,260 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:03,260 INFO L276 IsEmpty]: Start isEmpty. Operand 5352 states and 18815 transitions. [2021-06-05 22:21:03,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:21:03,267 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:21:03,267 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:21:03,267 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-06-05 22:21:03,267 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:21:03,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:21:03,267 INFO L82 PathProgramCache]: Analyzing trace with hash -201852790, now seen corresponding path program 18 times [2021-06-05 22:21:03,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:21:03,268 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025717015] [2021-06-05 22:21:03,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:21:03,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:21:03,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:21:03,468 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:21:03,468 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025717015] [2021-06-05 22:21:03,468 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025717015] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:21:03,468 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:21:03,468 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:21:03,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318285800] [2021-06-05 22:21:03,469 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:21:03,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:21:03,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:21:03,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:21:03,469 INFO L87 Difference]: Start difference. First operand 5352 states and 18815 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:04,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:21:04,445 INFO L93 Difference]: Finished difference Result 6354 states and 22116 transitions. [2021-06-05 22:21:04,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 22:21:04,445 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:21:04,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:21:04,456 INFO L225 Difference]: With dead ends: 6354 [2021-06-05 22:21:04,456 INFO L226 Difference]: Without dead ends: 6251 [2021-06-05 22:21:04,456 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 559.7ms TimeCoverageRelationStatistics Valid=156, Invalid=1404, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 22:21:04,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6251 states. [2021-06-05 22:21:04,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6251 to 5340. [2021-06-05 22:21:04,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5340 states, 5339 states have (on average 3.5188237497658736) internal successors, (18787), 5339 states have internal predecessors, (18787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:04,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5340 states to 5340 states and 18787 transitions. [2021-06-05 22:21:04,532 INFO L78 Accepts]: Start accepts. Automaton has 5340 states and 18787 transitions. Word has length 47 [2021-06-05 22:21:04,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:21:04,532 INFO L482 AbstractCegarLoop]: Abstraction has 5340 states and 18787 transitions. [2021-06-05 22:21:04,532 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:04,532 INFO L276 IsEmpty]: Start isEmpty. Operand 5340 states and 18787 transitions. [2021-06-05 22:21:04,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:21:04,539 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:21:04,539 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:21:04,539 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-06-05 22:21:04,539 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:21:04,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:21:04,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1868758312, now seen corresponding path program 19 times [2021-06-05 22:21:04,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:21:04,539 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699265376] [2021-06-05 22:21:04,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:21:04,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:21:04,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:21:04,730 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:21:04,730 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699265376] [2021-06-05 22:21:04,730 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699265376] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:21:04,730 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:21:04,730 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:21:04,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496742571] [2021-06-05 22:21:04,731 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:21:04,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:21:04,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:21:04,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:21:04,731 INFO L87 Difference]: Start difference. First operand 5340 states and 18787 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:05,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:21:05,765 INFO L93 Difference]: Finished difference Result 6323 states and 22051 transitions. [2021-06-05 22:21:05,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 22:21:05,765 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:21:05,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:21:05,777 INFO L225 Difference]: With dead ends: 6323 [2021-06-05 22:21:05,777 INFO L226 Difference]: Without dead ends: 6186 [2021-06-05 22:21:05,777 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 585.3ms TimeCoverageRelationStatistics Valid=158, Invalid=1402, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 22:21:05,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6186 states. [2021-06-05 22:21:05,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6186 to 5382. [2021-06-05 22:21:05,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5382 states, 5381 states have (on average 3.5108715852072105) internal successors, (18892), 5381 states have internal predecessors, (18892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:05,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5382 states to 5382 states and 18892 transitions. [2021-06-05 22:21:05,857 INFO L78 Accepts]: Start accepts. Automaton has 5382 states and 18892 transitions. Word has length 47 [2021-06-05 22:21:05,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:21:05,857 INFO L482 AbstractCegarLoop]: Abstraction has 5382 states and 18892 transitions. [2021-06-05 22:21:05,857 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:05,857 INFO L276 IsEmpty]: Start isEmpty. Operand 5382 states and 18892 transitions. [2021-06-05 22:21:05,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:21:05,864 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:21:05,864 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:21:05,864 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-06-05 22:21:05,864 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:21:05,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:21:05,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1059817704, now seen corresponding path program 20 times [2021-06-05 22:21:05,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:21:05,865 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535987226] [2021-06-05 22:21:05,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:21:05,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:21:06,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:21:06,058 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:21:06,058 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535987226] [2021-06-05 22:21:06,058 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535987226] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:21:06,058 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:21:06,058 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:21:06,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009898196] [2021-06-05 22:21:06,059 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:21:06,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:21:06,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:21:06,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:21:06,059 INFO L87 Difference]: Start difference. First operand 5382 states and 18892 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:07,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:21:07,174 INFO L93 Difference]: Finished difference Result 6307 states and 21983 transitions. [2021-06-05 22:21:07,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 22:21:07,175 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:21:07,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:21:07,185 INFO L225 Difference]: With dead ends: 6307 [2021-06-05 22:21:07,185 INFO L226 Difference]: Without dead ends: 6162 [2021-06-05 22:21:07,186 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 653.2ms TimeCoverageRelationStatistics Valid=175, Invalid=1631, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 22:21:07,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6162 states. [2021-06-05 22:21:07,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6162 to 5358. [2021-06-05 22:21:07,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5358 states, 5357 states have (on average 3.514280380810155) internal successors, (18826), 5357 states have internal predecessors, (18826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:07,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5358 states to 5358 states and 18826 transitions. [2021-06-05 22:21:07,265 INFO L78 Accepts]: Start accepts. Automaton has 5358 states and 18826 transitions. Word has length 47 [2021-06-05 22:21:07,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:21:07,265 INFO L482 AbstractCegarLoop]: Abstraction has 5358 states and 18826 transitions. [2021-06-05 22:21:07,265 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:07,265 INFO L276 IsEmpty]: Start isEmpty. Operand 5358 states and 18826 transitions. [2021-06-05 22:21:07,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:21:07,272 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:21:07,272 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:21:07,272 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-06-05 22:21:07,272 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:21:07,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:21:07,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1959713482, now seen corresponding path program 21 times [2021-06-05 22:21:07,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:21:07,273 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116760039] [2021-06-05 22:21:07,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:21:07,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:21:07,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:21:07,463 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:21:07,463 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116760039] [2021-06-05 22:21:07,463 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116760039] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:21:07,463 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:21:07,463 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:21:07,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023871461] [2021-06-05 22:21:07,463 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:21:07,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:21:07,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:21:07,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:21:07,464 INFO L87 Difference]: Start difference. First operand 5358 states and 18826 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:09,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:21:09,700 INFO L93 Difference]: Finished difference Result 9468 states and 33376 transitions. [2021-06-05 22:21:09,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 22:21:09,700 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:21:09,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:21:09,717 INFO L225 Difference]: With dead ends: 9468 [2021-06-05 22:21:09,717 INFO L226 Difference]: Without dead ends: 9331 [2021-06-05 22:21:09,718 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1004 ImplicationChecksByTransitivity, 1221.7ms TimeCoverageRelationStatistics Valid=402, Invalid=3504, Unknown=0, NotChecked=0, Total=3906 [2021-06-05 22:21:09,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9331 states. [2021-06-05 22:21:09,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9331 to 5392. [2021-06-05 22:21:09,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5392 states, 5391 states have (on average 3.5086254869226488) internal successors, (18915), 5391 states have internal predecessors, (18915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:09,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5392 states to 5392 states and 18915 transitions. [2021-06-05 22:21:09,823 INFO L78 Accepts]: Start accepts. Automaton has 5392 states and 18915 transitions. Word has length 47 [2021-06-05 22:21:09,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:21:09,823 INFO L482 AbstractCegarLoop]: Abstraction has 5392 states and 18915 transitions. [2021-06-05 22:21:09,823 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:09,823 INFO L276 IsEmpty]: Start isEmpty. Operand 5392 states and 18915 transitions. [2021-06-05 22:21:09,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:21:09,830 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:21:09,830 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:21:09,830 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-06-05 22:21:09,830 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:21:09,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:21:09,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1109061574, now seen corresponding path program 22 times [2021-06-05 22:21:09,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:21:09,831 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033778983] [2021-06-05 22:21:09,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:21:09,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:21:10,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:21:10,025 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:21:10,025 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033778983] [2021-06-05 22:21:10,025 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033778983] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:21:10,025 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:21:10,025 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:21:10,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755035030] [2021-06-05 22:21:10,026 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:21:10,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:21:10,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:21:10,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:21:10,026 INFO L87 Difference]: Start difference. First operand 5392 states and 18915 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:12,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:21:12,412 INFO L93 Difference]: Finished difference Result 10103 states and 35934 transitions. [2021-06-05 22:21:12,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-06-05 22:21:12,413 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:21:12,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:21:12,430 INFO L225 Difference]: With dead ends: 10103 [2021-06-05 22:21:12,431 INFO L226 Difference]: Without dead ends: 9996 [2021-06-05 22:21:12,432 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1287 ImplicationChecksByTransitivity, 1304.9ms TimeCoverageRelationStatistics Valid=433, Invalid=4259, Unknown=0, NotChecked=0, Total=4692 [2021-06-05 22:21:12,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9996 states. [2021-06-05 22:21:12,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9996 to 5376. [2021-06-05 22:21:12,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5376 states, 5375 states have (on average 3.5108837209302326) internal successors, (18871), 5375 states have internal predecessors, (18871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:12,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5376 states to 5376 states and 18871 transitions. [2021-06-05 22:21:12,534 INFO L78 Accepts]: Start accepts. Automaton has 5376 states and 18871 transitions. Word has length 47 [2021-06-05 22:21:12,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:21:12,534 INFO L482 AbstractCegarLoop]: Abstraction has 5376 states and 18871 transitions. [2021-06-05 22:21:12,535 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:12,535 INFO L276 IsEmpty]: Start isEmpty. Operand 5376 states and 18871 transitions. [2021-06-05 22:21:12,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:21:12,542 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:21:12,542 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:21:12,542 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-06-05 22:21:12,542 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:21:12,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:21:12,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1505304276, now seen corresponding path program 23 times [2021-06-05 22:21:12,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:21:12,542 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446919802] [2021-06-05 22:21:12,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:21:12,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:21:12,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:21:12,730 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:21:12,730 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446919802] [2021-06-05 22:21:12,730 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446919802] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:21:12,730 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:21:12,730 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:21:12,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024761246] [2021-06-05 22:21:12,730 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:21:12,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:21:12,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:21:12,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:21:12,731 INFO L87 Difference]: Start difference. First operand 5376 states and 18871 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:13,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:21:13,899 INFO L93 Difference]: Finished difference Result 6505 states and 22569 transitions. [2021-06-05 22:21:13,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 22:21:13,899 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:21:13,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:21:13,910 INFO L225 Difference]: With dead ends: 6505 [2021-06-05 22:21:13,910 INFO L226 Difference]: Without dead ends: 6384 [2021-06-05 22:21:13,911 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 700.4ms TimeCoverageRelationStatistics Valid=207, Invalid=1955, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 22:21:13,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6384 states. [2021-06-05 22:21:13,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6384 to 5382. [2021-06-05 22:21:13,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5382 states, 5381 states have (on average 3.5093848727002417) internal successors, (18884), 5381 states have internal predecessors, (18884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:13,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5382 states to 5382 states and 18884 transitions. [2021-06-05 22:21:13,993 INFO L78 Accepts]: Start accepts. Automaton has 5382 states and 18884 transitions. Word has length 47 [2021-06-05 22:21:13,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:21:13,993 INFO L482 AbstractCegarLoop]: Abstraction has 5382 states and 18884 transitions. [2021-06-05 22:21:13,993 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:13,993 INFO L276 IsEmpty]: Start isEmpty. Operand 5382 states and 18884 transitions. [2021-06-05 22:21:13,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:21:13,999 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:21:14,000 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:21:14,000 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-06-05 22:21:14,000 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:21:14,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:21:14,000 INFO L82 PathProgramCache]: Analyzing trace with hash 66117160, now seen corresponding path program 24 times [2021-06-05 22:21:14,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:21:14,000 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034722639] [2021-06-05 22:21:14,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:21:14,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:21:14,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:21:14,250 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:21:14,250 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034722639] [2021-06-05 22:21:14,250 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034722639] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:21:14,250 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:21:14,251 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:21:14,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036402596] [2021-06-05 22:21:14,251 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:21:14,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:21:14,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:21:14,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:21:14,251 INFO L87 Difference]: Start difference. First operand 5382 states and 18884 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:15,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:21:15,624 INFO L93 Difference]: Finished difference Result 6877 states and 23923 transitions. [2021-06-05 22:21:15,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 22:21:15,624 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:21:15,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:21:15,635 INFO L225 Difference]: With dead ends: 6877 [2021-06-05 22:21:15,636 INFO L226 Difference]: Without dead ends: 6633 [2021-06-05 22:21:15,636 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 824.0ms TimeCoverageRelationStatistics Valid=249, Invalid=2403, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 22:21:15,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6633 states. [2021-06-05 22:21:15,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6633 to 5378. [2021-06-05 22:21:15,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5378 states, 5377 states have (on average 3.510135763436861) internal successors, (18874), 5377 states have internal predecessors, (18874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:15,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5378 states to 5378 states and 18874 transitions. [2021-06-05 22:21:15,716 INFO L78 Accepts]: Start accepts. Automaton has 5378 states and 18874 transitions. Word has length 47 [2021-06-05 22:21:15,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:21:15,716 INFO L482 AbstractCegarLoop]: Abstraction has 5378 states and 18874 transitions. [2021-06-05 22:21:15,716 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:15,716 INFO L276 IsEmpty]: Start isEmpty. Operand 5378 states and 18874 transitions. [2021-06-05 22:21:15,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:21:15,723 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:21:15,723 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:21:15,723 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-06-05 22:21:15,723 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:21:15,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:21:15,723 INFO L82 PathProgramCache]: Analyzing trace with hash 365008838, now seen corresponding path program 25 times [2021-06-05 22:21:15,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:21:15,723 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675371675] [2021-06-05 22:21:15,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:21:15,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:21:15,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:21:15,949 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:21:15,949 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675371675] [2021-06-05 22:21:15,949 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675371675] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:21:15,949 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:21:15,949 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:21:15,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697347510] [2021-06-05 22:21:15,949 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:21:15,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:21:15,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:21:15,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:21:15,950 INFO L87 Difference]: Start difference. First operand 5378 states and 18874 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:16,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:21:16,861 INFO L93 Difference]: Finished difference Result 6370 states and 22134 transitions. [2021-06-05 22:21:16,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 22:21:16,870 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:21:16,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:21:16,881 INFO L225 Difference]: With dead ends: 6370 [2021-06-05 22:21:16,881 INFO L226 Difference]: Without dead ends: 6273 [2021-06-05 22:21:16,881 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 554.0ms TimeCoverageRelationStatistics Valid=161, Invalid=1479, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 22:21:16,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6273 states. [2021-06-05 22:21:16,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6273 to 5392. [2021-06-05 22:21:16,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5392 states, 5391 states have (on average 3.506028566128733) internal successors, (18901), 5391 states have internal predecessors, (18901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:16,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5392 states to 5392 states and 18901 transitions. [2021-06-05 22:21:16,958 INFO L78 Accepts]: Start accepts. Automaton has 5392 states and 18901 transitions. Word has length 47 [2021-06-05 22:21:16,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:21:16,958 INFO L482 AbstractCegarLoop]: Abstraction has 5392 states and 18901 transitions. [2021-06-05 22:21:16,958 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:16,958 INFO L276 IsEmpty]: Start isEmpty. Operand 5392 states and 18901 transitions. [2021-06-05 22:21:16,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:21:16,965 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:21:16,965 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:21:16,965 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-06-05 22:21:16,965 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:21:16,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:21:16,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1360411672, now seen corresponding path program 26 times [2021-06-05 22:21:16,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:21:16,965 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974601068] [2021-06-05 22:21:16,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:21:16,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:21:17,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:21:17,157 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:21:17,157 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974601068] [2021-06-05 22:21:17,157 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974601068] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:21:17,157 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:21:17,157 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:21:17,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626114207] [2021-06-05 22:21:17,157 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:21:17,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:21:17,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:21:17,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:21:17,158 INFO L87 Difference]: Start difference. First operand 5392 states and 18901 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:18,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:21:18,171 INFO L93 Difference]: Finished difference Result 6271 states and 21829 transitions. [2021-06-05 22:21:18,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 22:21:18,172 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:21:18,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:21:18,182 INFO L225 Difference]: With dead ends: 6271 [2021-06-05 22:21:18,182 INFO L226 Difference]: Without dead ends: 6154 [2021-06-05 22:21:18,182 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 590.3ms TimeCoverageRelationStatistics Valid=164, Invalid=1558, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 22:21:18,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6154 states. [2021-06-05 22:21:18,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6154 to 5366. [2021-06-05 22:21:18,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5366 states, 5365 states have (on average 3.5109040074557316) internal successors, (18836), 5365 states have internal predecessors, (18836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:18,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5366 states to 5366 states and 18836 transitions. [2021-06-05 22:21:18,275 INFO L78 Accepts]: Start accepts. Automaton has 5366 states and 18836 transitions. Word has length 47 [2021-06-05 22:21:18,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:21:18,275 INFO L482 AbstractCegarLoop]: Abstraction has 5366 states and 18836 transitions. [2021-06-05 22:21:18,275 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:18,275 INFO L276 IsEmpty]: Start isEmpty. Operand 5366 states and 18836 transitions. [2021-06-05 22:21:18,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:21:18,282 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:21:18,282 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:21:18,282 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-06-05 22:21:18,282 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:21:18,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:21:18,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1831242200, now seen corresponding path program 27 times [2021-06-05 22:21:18,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:21:18,283 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673226111] [2021-06-05 22:21:18,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:21:18,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:21:18,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:21:18,501 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:21:18,501 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673226111] [2021-06-05 22:21:18,501 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673226111] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:21:18,501 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:21:18,501 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:21:18,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589574761] [2021-06-05 22:21:18,501 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:21:18,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:21:18,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:21:18,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:21:18,502 INFO L87 Difference]: Start difference. First operand 5366 states and 18836 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:19,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:21:19,596 INFO L93 Difference]: Finished difference Result 6663 states and 23172 transitions. [2021-06-05 22:21:19,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 22:21:19,596 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:21:19,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:21:19,607 INFO L225 Difference]: With dead ends: 6663 [2021-06-05 22:21:19,607 INFO L226 Difference]: Without dead ends: 6536 [2021-06-05 22:21:19,608 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 643.0ms TimeCoverageRelationStatistics Valid=177, Invalid=1629, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 22:21:19,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6536 states. [2021-06-05 22:21:19,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6536 to 5386. [2021-06-05 22:21:19,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5386 states, 5385 states have (on average 3.5086350974930363) internal successors, (18894), 5385 states have internal predecessors, (18894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:19,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5386 states to 5386 states and 18894 transitions. [2021-06-05 22:21:19,687 INFO L78 Accepts]: Start accepts. Automaton has 5386 states and 18894 transitions. Word has length 47 [2021-06-05 22:21:19,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:21:19,688 INFO L482 AbstractCegarLoop]: Abstraction has 5386 states and 18894 transitions. [2021-06-05 22:21:19,688 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:19,688 INFO L276 IsEmpty]: Start isEmpty. Operand 5386 states and 18894 transitions. [2021-06-05 22:21:19,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:21:19,694 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:21:19,694 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:21:19,694 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-06-05 22:21:19,694 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:21:19,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:21:19,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1112976492, now seen corresponding path program 28 times [2021-06-05 22:21:19,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:21:19,695 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872525800] [2021-06-05 22:21:19,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:21:19,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:21:19,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:21:19,885 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:21:19,885 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872525800] [2021-06-05 22:21:19,885 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872525800] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:21:19,885 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:21:19,885 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:21:19,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170681837] [2021-06-05 22:21:19,885 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:21:19,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:21:19,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:21:19,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:21:19,886 INFO L87 Difference]: Start difference. First operand 5386 states and 18894 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:21,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:21:21,566 INFO L93 Difference]: Finished difference Result 8560 states and 30207 transitions. [2021-06-05 22:21:21,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 22:21:21,566 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:21:21,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:21:21,581 INFO L225 Difference]: With dead ends: 8560 [2021-06-05 22:21:21,581 INFO L226 Difference]: Without dead ends: 8471 [2021-06-05 22:21:21,581 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 944.9ms TimeCoverageRelationStatistics Valid=281, Invalid=2475, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 22:21:21,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8471 states. [2021-06-05 22:21:21,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8471 to 5410. [2021-06-05 22:21:21,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5410 states, 5409 states have (on average 3.5067480125716397) internal successors, (18968), 5409 states have internal predecessors, (18968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:21,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5410 states to 5410 states and 18968 transitions. [2021-06-05 22:21:21,671 INFO L78 Accepts]: Start accepts. Automaton has 5410 states and 18968 transitions. Word has length 47 [2021-06-05 22:21:21,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:21:21,672 INFO L482 AbstractCegarLoop]: Abstraction has 5410 states and 18968 transitions. [2021-06-05 22:21:21,672 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:21,672 INFO L276 IsEmpty]: Start isEmpty. Operand 5410 states and 18968 transitions. [2021-06-05 22:21:21,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:21:21,678 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:21:21,678 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:21:21,678 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-06-05 22:21:21,678 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:21:21,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:21:21,679 INFO L82 PathProgramCache]: Analyzing trace with hash 262324584, now seen corresponding path program 29 times [2021-06-05 22:21:21,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:21:21,679 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435458360] [2021-06-05 22:21:21,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:21:21,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:21:21,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:21:21,889 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:21:21,889 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435458360] [2021-06-05 22:21:21,889 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435458360] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:21:21,889 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:21:21,889 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:21:21,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342254852] [2021-06-05 22:21:21,890 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:21:21,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:21:21,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:21:21,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:21:21,890 INFO L87 Difference]: Start difference. First operand 5410 states and 18968 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:23,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:21:23,944 INFO L93 Difference]: Finished difference Result 9269 states and 32989 transitions. [2021-06-05 22:21:23,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 22:21:23,945 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:21:23,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:21:23,963 INFO L225 Difference]: With dead ends: 9269 [2021-06-05 22:21:23,963 INFO L226 Difference]: Without dead ends: 9166 [2021-06-05 22:21:23,963 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1000 ImplicationChecksByTransitivity, 1126.7ms TimeCoverageRelationStatistics Valid=357, Invalid=3549, Unknown=0, NotChecked=0, Total=3906 [2021-06-05 22:21:23,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9166 states. [2021-06-05 22:21:24,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9166 to 5390. [2021-06-05 22:21:24,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5390 states, 5389 states have (on average 3.5101131935424013) internal successors, (18916), 5389 states have internal predecessors, (18916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:24,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5390 states to 5390 states and 18916 transitions. [2021-06-05 22:21:24,072 INFO L78 Accepts]: Start accepts. Automaton has 5390 states and 18916 transitions. Word has length 47 [2021-06-05 22:21:24,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:21:24,072 INFO L482 AbstractCegarLoop]: Abstraction has 5390 states and 18916 transitions. [2021-06-05 22:21:24,072 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:24,072 INFO L276 IsEmpty]: Start isEmpty. Operand 5390 states and 18916 transitions. [2021-06-05 22:21:24,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:21:24,080 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:21:24,080 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:21:24,080 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-06-05 22:21:24,080 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:21:24,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:21:24,080 INFO L82 PathProgramCache]: Analyzing trace with hash -289318842, now seen corresponding path program 30 times [2021-06-05 22:21:24,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:21:24,080 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020618697] [2021-06-05 22:21:24,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:21:24,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:21:24,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:21:24,285 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:21:24,285 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020618697] [2021-06-05 22:21:24,285 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020618697] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:21:24,285 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:21:24,285 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:21:24,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225605819] [2021-06-05 22:21:24,286 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:21:24,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:21:24,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:21:24,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:21:24,286 INFO L87 Difference]: Start difference. First operand 5390 states and 18916 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:25,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:21:25,197 INFO L93 Difference]: Finished difference Result 6541 states and 22685 transitions. [2021-06-05 22:21:25,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 22:21:25,197 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:21:25,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:21:25,208 INFO L225 Difference]: With dead ends: 6541 [2021-06-05 22:21:25,208 INFO L226 Difference]: Without dead ends: 6414 [2021-06-05 22:21:25,209 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 528.9ms TimeCoverageRelationStatistics Valid=161, Invalid=1561, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 22:21:25,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6414 states. [2021-06-05 22:21:25,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6414 to 5402. [2021-06-05 22:21:25,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5402 states, 5401 states have (on average 3.507868913164229) internal successors, (18946), 5401 states have internal predecessors, (18946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:25,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5402 states to 5402 states and 18946 transitions. [2021-06-05 22:21:25,287 INFO L78 Accepts]: Start accepts. Automaton has 5402 states and 18946 transitions. Word has length 47 [2021-06-05 22:21:25,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:21:25,287 INFO L482 AbstractCegarLoop]: Abstraction has 5402 states and 18946 transitions. [2021-06-05 22:21:25,287 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:25,287 INFO L276 IsEmpty]: Start isEmpty. Operand 5402 states and 18946 transitions. [2021-06-05 22:21:25,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:21:25,294 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:21:25,294 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:21:25,294 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-06-05 22:21:25,294 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:21:25,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:21:25,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1538052418, now seen corresponding path program 31 times [2021-06-05 22:21:25,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:21:25,294 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910013110] [2021-06-05 22:21:25,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:21:25,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:21:25,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:21:25,483 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:21:25,483 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910013110] [2021-06-05 22:21:25,483 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910013110] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:21:25,483 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:21:25,483 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:21:25,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440783057] [2021-06-05 22:21:25,484 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:21:25,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:21:25,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:21:25,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:21:25,484 INFO L87 Difference]: Start difference. First operand 5402 states and 18946 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:26,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:21:26,557 INFO L93 Difference]: Finished difference Result 6630 states and 22927 transitions. [2021-06-05 22:21:26,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 22:21:26,558 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:21:26,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:21:26,569 INFO L225 Difference]: With dead ends: 6630 [2021-06-05 22:21:26,569 INFO L226 Difference]: Without dead ends: 6533 [2021-06-05 22:21:26,569 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 642.0ms TimeCoverageRelationStatistics Valid=190, Invalid=1880, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 22:21:26,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6533 states. [2021-06-05 22:21:26,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6533 to 5408. [2021-06-05 22:21:26,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5408 states, 5407 states have (on average 3.506750508599963) internal successors, (18961), 5407 states have internal predecessors, (18961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:26,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5408 states to 5408 states and 18961 transitions. [2021-06-05 22:21:26,647 INFO L78 Accepts]: Start accepts. Automaton has 5408 states and 18961 transitions. Word has length 47 [2021-06-05 22:21:26,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:21:26,647 INFO L482 AbstractCegarLoop]: Abstraction has 5408 states and 18961 transitions. [2021-06-05 22:21:26,647 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:26,647 INFO L276 IsEmpty]: Start isEmpty. Operand 5408 states and 18961 transitions. [2021-06-05 22:21:26,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:21:26,654 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:21:26,654 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:21:26,654 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-06-05 22:21:26,654 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:21:26,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:21:26,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1540726244, now seen corresponding path program 32 times [2021-06-05 22:21:26,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:21:26,655 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550700202] [2021-06-05 22:21:26,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:21:26,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:21:26,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:21:26,850 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:21:26,850 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550700202] [2021-06-05 22:21:26,850 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550700202] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:21:26,850 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:21:26,850 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:21:26,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411278765] [2021-06-05 22:21:26,851 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:21:26,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:21:26,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:21:26,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:21:26,851 INFO L87 Difference]: Start difference. First operand 5408 states and 18961 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:27,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:21:27,810 INFO L93 Difference]: Finished difference Result 6511 states and 22582 transitions. [2021-06-05 22:21:27,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 22:21:27,810 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:21:27,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:21:27,821 INFO L225 Difference]: With dead ends: 6511 [2021-06-05 22:21:27,822 INFO L226 Difference]: Without dead ends: 6402 [2021-06-05 22:21:27,822 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 563.9ms TimeCoverageRelationStatistics Valid=171, Invalid=1635, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 22:21:27,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6402 states. [2021-06-05 22:21:27,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6402 to 5390. [2021-06-05 22:21:27,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5390 states, 5389 states have (on average 3.5093709408053444) internal successors, (18912), 5389 states have internal predecessors, (18912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:27,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5390 states to 5390 states and 18912 transitions. [2021-06-05 22:21:27,904 INFO L78 Accepts]: Start accepts. Automaton has 5390 states and 18912 transitions. Word has length 47 [2021-06-05 22:21:27,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:21:27,904 INFO L482 AbstractCegarLoop]: Abstraction has 5390 states and 18912 transitions. [2021-06-05 22:21:27,904 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:27,904 INFO L276 IsEmpty]: Start isEmpty. Operand 5390 states and 18912 transitions. [2021-06-05 22:21:27,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:21:27,911 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:21:27,912 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:21:27,912 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-06-05 22:21:27,912 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:21:27,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:21:27,912 INFO L82 PathProgramCache]: Analyzing trace with hash 232254572, now seen corresponding path program 33 times [2021-06-05 22:21:27,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:21:27,912 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368565840] [2021-06-05 22:21:27,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:21:27,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:21:28,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:21:28,102 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:21:28,103 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368565840] [2021-06-05 22:21:28,103 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368565840] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:21:28,103 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:21:28,103 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:21:28,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847204538] [2021-06-05 22:21:28,103 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:21:28,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:21:28,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:21:28,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:21:28,103 INFO L87 Difference]: Start difference. First operand 5390 states and 18912 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:29,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:21:29,410 INFO L93 Difference]: Finished difference Result 6620 states and 22930 transitions. [2021-06-05 22:21:29,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 22:21:29,411 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:21:29,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:21:29,422 INFO L225 Difference]: With dead ends: 6620 [2021-06-05 22:21:29,422 INFO L226 Difference]: Without dead ends: 6499 [2021-06-05 22:21:29,423 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 770.2ms TimeCoverageRelationStatistics Valid=215, Invalid=2137, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 22:21:29,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6499 states. [2021-06-05 22:21:29,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6499 to 5396. [2021-06-05 22:21:29,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5396 states, 5395 states have (on average 3.5078776645041705) internal successors, (18925), 5395 states have internal predecessors, (18925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:29,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5396 states to 5396 states and 18925 transitions. [2021-06-05 22:21:29,504 INFO L78 Accepts]: Start accepts. Automaton has 5396 states and 18925 transitions. Word has length 47 [2021-06-05 22:21:29,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:21:29,504 INFO L482 AbstractCegarLoop]: Abstraction has 5396 states and 18925 transitions. [2021-06-05 22:21:29,504 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:29,504 INFO L276 IsEmpty]: Start isEmpty. Operand 5396 states and 18925 transitions. [2021-06-05 22:21:29,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:21:29,511 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:21:29,512 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:21:29,512 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-06-05 22:21:29,512 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:21:29,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:21:29,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1803676008, now seen corresponding path program 34 times [2021-06-05 22:21:29,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:21:29,512 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615874418] [2021-06-05 22:21:29,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:21:29,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:21:29,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:21:29,695 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:21:29,695 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615874418] [2021-06-05 22:21:29,695 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615874418] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:21:29,695 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:21:29,695 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:21:29,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158398055] [2021-06-05 22:21:29,695 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:21:29,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:21:29,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:21:29,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:21:29,696 INFO L87 Difference]: Start difference. First operand 5396 states and 18925 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:31,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:21:31,180 INFO L93 Difference]: Finished difference Result 7773 states and 27053 transitions. [2021-06-05 22:21:31,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 22:21:31,180 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:21:31,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:21:31,193 INFO L225 Difference]: With dead ends: 7773 [2021-06-05 22:21:31,194 INFO L226 Difference]: Without dead ends: 7678 [2021-06-05 22:21:31,194 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 646 ImplicationChecksByTransitivity, 799.2ms TimeCoverageRelationStatistics Valid=260, Invalid=2602, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 22:21:31,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7678 states. [2021-06-05 22:21:31,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7678 to 5386. [2021-06-05 22:21:31,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5386 states, 5385 states have (on average 3.5093779015784587) internal successors, (18898), 5385 states have internal predecessors, (18898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:31,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5386 states to 5386 states and 18898 transitions. [2021-06-05 22:21:31,278 INFO L78 Accepts]: Start accepts. Automaton has 5386 states and 18898 transitions. Word has length 47 [2021-06-05 22:21:31,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:21:31,278 INFO L482 AbstractCegarLoop]: Abstraction has 5386 states and 18898 transitions. [2021-06-05 22:21:31,279 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:31,279 INFO L276 IsEmpty]: Start isEmpty. Operand 5386 states and 18898 transitions. [2021-06-05 22:21:31,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:21:31,285 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:21:31,285 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:21:31,285 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-06-05 22:21:31,285 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:21:31,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:21:31,285 INFO L82 PathProgramCache]: Analyzing trace with hash 2102567686, now seen corresponding path program 35 times [2021-06-05 22:21:31,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:21:31,286 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519686756] [2021-06-05 22:21:31,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:21:31,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:21:31,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:21:31,481 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:21:31,481 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519686756] [2021-06-05 22:21:31,481 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519686756] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:21:31,481 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:21:31,481 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:21:31,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866359219] [2021-06-05 22:21:31,482 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:21:31,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:21:31,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:21:31,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:21:31,482 INFO L87 Difference]: Start difference. First operand 5386 states and 18898 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:32,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:21:32,614 INFO L93 Difference]: Finished difference Result 6616 states and 22882 transitions. [2021-06-05 22:21:32,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 22:21:32,614 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:21:32,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:21:32,625 INFO L225 Difference]: With dead ends: 6616 [2021-06-05 22:21:32,625 INFO L226 Difference]: Without dead ends: 6519 [2021-06-05 22:21:32,625 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 697.5ms TimeCoverageRelationStatistics Valid=205, Invalid=1957, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 22:21:32,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6519 states. [2021-06-05 22:21:32,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6519 to 5394. [2021-06-05 22:21:32,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5394 states, 5393 states have (on average 3.5075097348414612) internal successors, (18916), 5393 states have internal predecessors, (18916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:32,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5394 states to 5394 states and 18916 transitions. [2021-06-05 22:21:32,702 INFO L78 Accepts]: Start accepts. Automaton has 5394 states and 18916 transitions. Word has length 47 [2021-06-05 22:21:32,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:21:32,702 INFO L482 AbstractCegarLoop]: Abstraction has 5394 states and 18916 transitions. [2021-06-05 22:21:32,703 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:32,703 INFO L276 IsEmpty]: Start isEmpty. Operand 5394 states and 18916 transitions. [2021-06-05 22:21:32,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:21:32,709 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:21:32,709 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:21:32,709 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-06-05 22:21:32,709 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:21:32,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:21:32,709 INFO L82 PathProgramCache]: Analyzing trace with hash 377147176, now seen corresponding path program 36 times [2021-06-05 22:21:32,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:21:32,710 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42138781] [2021-06-05 22:21:32,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:21:32,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:21:32,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:21:32,895 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:21:32,895 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42138781] [2021-06-05 22:21:32,895 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42138781] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:21:32,895 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:21:32,895 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:21:32,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125237551] [2021-06-05 22:21:32,895 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:21:32,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:21:32,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:21:32,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:21:32,896 INFO L87 Difference]: Start difference. First operand 5394 states and 18916 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:33,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:21:33,861 INFO L93 Difference]: Finished difference Result 6497 states and 22537 transitions. [2021-06-05 22:21:33,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 22:21:33,862 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:21:33,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:21:33,872 INFO L225 Difference]: With dead ends: 6497 [2021-06-05 22:21:33,872 INFO L226 Difference]: Without dead ends: 6394 [2021-06-05 22:21:33,873 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 576.0ms TimeCoverageRelationStatistics Valid=183, Invalid=1709, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 22:21:33,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6394 states. [2021-06-05 22:21:33,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6394 to 5382. [2021-06-05 22:21:33,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5382 states, 5381 states have (on average 3.510128228953726) internal successors, (18888), 5381 states have internal predecessors, (18888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:33,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5382 states to 5382 states and 18888 transitions. [2021-06-05 22:21:33,950 INFO L78 Accepts]: Start accepts. Automaton has 5382 states and 18888 transitions. Word has length 47 [2021-06-05 22:21:33,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:21:33,950 INFO L482 AbstractCegarLoop]: Abstraction has 5382 states and 18888 transitions. [2021-06-05 22:21:33,950 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:33,950 INFO L276 IsEmpty]: Start isEmpty. Operand 5382 states and 18888 transitions. [2021-06-05 22:21:33,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:21:33,956 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:21:33,956 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:21:33,956 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-06-05 22:21:33,956 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:21:33,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:21:33,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1204921734, now seen corresponding path program 37 times [2021-06-05 22:21:33,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:21:33,957 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982843613] [2021-06-05 22:21:33,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:21:33,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:21:34,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:21:34,157 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:21:34,157 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982843613] [2021-06-05 22:21:34,157 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982843613] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:21:34,157 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:21:34,157 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:21:34,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979854964] [2021-06-05 22:21:34,158 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:21:34,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:21:34,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:21:34,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:21:34,158 INFO L87 Difference]: Start difference. First operand 5382 states and 18888 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:35,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:21:35,071 INFO L93 Difference]: Finished difference Result 6332 states and 22041 transitions. [2021-06-05 22:21:35,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 22:21:35,072 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:21:35,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:21:35,083 INFO L225 Difference]: With dead ends: 6332 [2021-06-05 22:21:35,083 INFO L226 Difference]: Without dead ends: 6205 [2021-06-05 22:21:35,084 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 544.9ms TimeCoverageRelationStatistics Valid=149, Invalid=1411, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 22:21:35,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6205 states. [2021-06-05 22:21:35,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6205 to 5418. [2021-06-05 22:21:35,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5418 states, 5417 states have (on average 3.5078456710356285) internal successors, (19002), 5417 states have internal predecessors, (19002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:35,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5418 states to 5418 states and 19002 transitions. [2021-06-05 22:21:35,170 INFO L78 Accepts]: Start accepts. Automaton has 5418 states and 19002 transitions. Word has length 47 [2021-06-05 22:21:35,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:21:35,171 INFO L482 AbstractCegarLoop]: Abstraction has 5418 states and 19002 transitions. [2021-06-05 22:21:35,171 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:35,171 INFO L276 IsEmpty]: Start isEmpty. Operand 5418 states and 19002 transitions. [2021-06-05 22:21:35,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:21:35,178 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:21:35,178 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:21:35,178 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-06-05 22:21:35,178 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:21:35,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:21:35,178 INFO L82 PathProgramCache]: Analyzing trace with hash 622449526, now seen corresponding path program 38 times [2021-06-05 22:21:35,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:21:35,179 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397073397] [2021-06-05 22:21:35,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:21:35,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:21:35,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:21:35,369 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:21:35,369 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397073397] [2021-06-05 22:21:35,369 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397073397] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:21:35,369 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:21:35,369 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:21:35,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050294826] [2021-06-05 22:21:35,369 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:21:35,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:21:35,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:21:35,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:21:35,370 INFO L87 Difference]: Start difference. First operand 5418 states and 19002 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:36,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:21:36,371 INFO L93 Difference]: Finished difference Result 6451 states and 22378 transitions. [2021-06-05 22:21:36,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 22:21:36,372 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:21:36,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:21:36,383 INFO L225 Difference]: With dead ends: 6451 [2021-06-05 22:21:36,383 INFO L226 Difference]: Without dead ends: 6354 [2021-06-05 22:21:36,384 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 596.2ms TimeCoverageRelationStatistics Valid=168, Invalid=1638, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 22:21:36,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6354 states. [2021-06-05 22:21:36,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6354 to 5424. [2021-06-05 22:21:36,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5424 states, 5423 states have (on average 3.5067305919232896) internal successors, (19017), 5423 states have internal predecessors, (19017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:36,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5424 states to 5424 states and 19017 transitions. [2021-06-05 22:21:36,469 INFO L78 Accepts]: Start accepts. Automaton has 5424 states and 19017 transitions. Word has length 47 [2021-06-05 22:21:36,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:21:36,470 INFO L482 AbstractCegarLoop]: Abstraction has 5424 states and 19017 transitions. [2021-06-05 22:21:36,470 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:36,470 INFO L276 IsEmpty]: Start isEmpty. Operand 5424 states and 19017 transitions. [2021-06-05 22:21:36,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:21:36,477 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:21:36,477 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:21:36,480 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-06-05 22:21:36,480 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:21:36,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:21:36,481 INFO L82 PathProgramCache]: Analyzing trace with hash 625123352, now seen corresponding path program 39 times [2021-06-05 22:21:36,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:21:36,481 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333345050] [2021-06-05 22:21:36,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:21:36,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:21:36,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:21:36,665 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:21:36,665 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333345050] [2021-06-05 22:21:36,666 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333345050] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:21:36,666 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:21:36,666 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:21:36,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32630962] [2021-06-05 22:21:36,666 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:21:36,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:21:36,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:21:36,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:21:36,666 INFO L87 Difference]: Start difference. First operand 5424 states and 19017 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:37,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:21:37,583 INFO L93 Difference]: Finished difference Result 6302 states and 21938 transitions. [2021-06-05 22:21:37,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 22:21:37,583 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:21:37,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:21:37,595 INFO L225 Difference]: With dead ends: 6302 [2021-06-05 22:21:37,595 INFO L226 Difference]: Without dead ends: 6193 [2021-06-05 22:21:37,595 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 530.4ms TimeCoverageRelationStatistics Valid=153, Invalid=1407, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 22:21:37,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6193 states. [2021-06-05 22:21:37,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6193 to 5406. [2021-06-05 22:21:37,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5406 states, 5405 states have (on average 3.50786308973173) internal successors, (18960), 5405 states have internal predecessors, (18960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:37,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5406 states to 5406 states and 18960 transitions. [2021-06-05 22:21:37,682 INFO L78 Accepts]: Start accepts. Automaton has 5406 states and 18960 transitions. Word has length 47 [2021-06-05 22:21:37,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:21:37,683 INFO L482 AbstractCegarLoop]: Abstraction has 5406 states and 18960 transitions. [2021-06-05 22:21:37,683 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:37,683 INFO L276 IsEmpty]: Start isEmpty. Operand 5406 states and 18960 transitions. [2021-06-05 22:21:37,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:21:37,690 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:21:37,690 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:21:37,690 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-06-05 22:21:37,690 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:21:37,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:21:37,690 INFO L82 PathProgramCache]: Analyzing trace with hash 724809262, now seen corresponding path program 40 times [2021-06-05 22:21:37,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:21:37,690 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273972841] [2021-06-05 22:21:37,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:21:37,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:21:37,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:21:37,863 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:21:37,864 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273972841] [2021-06-05 22:21:37,864 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273972841] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:21:37,864 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:21:37,864 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:21:37,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949647454] [2021-06-05 22:21:37,864 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:21:37,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:21:37,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:21:37,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:21:37,864 INFO L87 Difference]: Start difference. First operand 5406 states and 18960 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:38,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:21:38,803 INFO L93 Difference]: Finished difference Result 6337 states and 22094 transitions. [2021-06-05 22:21:38,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 22:21:38,803 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:21:38,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:21:38,813 INFO L225 Difference]: With dead ends: 6337 [2021-06-05 22:21:38,814 INFO L226 Difference]: Without dead ends: 6192 [2021-06-05 22:21:38,814 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 543.1ms TimeCoverageRelationStatistics Valid=162, Invalid=1478, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 22:21:38,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6192 states. [2021-06-05 22:21:38,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6192 to 5418. [2021-06-05 22:21:38,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5418 states, 5417 states have (on average 3.505630422743216) internal successors, (18990), 5417 states have internal predecessors, (18990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:38,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5418 states to 5418 states and 18990 transitions. [2021-06-05 22:21:38,891 INFO L78 Accepts]: Start accepts. Automaton has 5418 states and 18990 transitions. Word has length 47 [2021-06-05 22:21:38,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:21:38,891 INFO L482 AbstractCegarLoop]: Abstraction has 5418 states and 18990 transitions. [2021-06-05 22:21:38,891 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:38,891 INFO L276 IsEmpty]: Start isEmpty. Operand 5418 states and 18990 transitions. [2021-06-05 22:21:38,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:21:38,899 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:21:38,899 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:21:38,899 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-06-05 22:21:38,899 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:21:38,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:21:38,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1442339212, now seen corresponding path program 41 times [2021-06-05 22:21:38,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:21:38,899 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055332492] [2021-06-05 22:21:38,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:21:38,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:21:39,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:21:39,079 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:21:39,080 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055332492] [2021-06-05 22:21:39,080 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055332492] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:21:39,080 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:21:39,080 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:21:39,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590347390] [2021-06-05 22:21:39,080 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:21:39,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:21:39,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:21:39,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:21:39,080 INFO L87 Difference]: Start difference. First operand 5418 states and 18990 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:40,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:21:40,062 INFO L93 Difference]: Finished difference Result 6358 states and 22098 transitions. [2021-06-05 22:21:40,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 22:21:40,062 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:21:40,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:21:40,073 INFO L225 Difference]: With dead ends: 6358 [2021-06-05 22:21:40,073 INFO L226 Difference]: Without dead ends: 6261 [2021-06-05 22:21:40,073 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 583.2ms TimeCoverageRelationStatistics Valid=172, Invalid=1634, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 22:21:40,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6261 states. [2021-06-05 22:21:40,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6261 to 5424. [2021-06-05 22:21:40,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5424 states, 5423 states have (on average 3.5045177945786463) internal successors, (19005), 5423 states have internal predecessors, (19005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:40,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5424 states to 5424 states and 19005 transitions. [2021-06-05 22:21:40,150 INFO L78 Accepts]: Start accepts. Automaton has 5424 states and 19005 transitions. Word has length 47 [2021-06-05 22:21:40,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:21:40,150 INFO L482 AbstractCegarLoop]: Abstraction has 5424 states and 19005 transitions. [2021-06-05 22:21:40,150 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:40,150 INFO L276 IsEmpty]: Start isEmpty. Operand 5424 states and 19005 transitions. [2021-06-05 22:21:40,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:21:40,157 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:21:40,157 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:21:40,157 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-06-05 22:21:40,157 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:21:40,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:21:40,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1445013038, now seen corresponding path program 42 times [2021-06-05 22:21:40,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:21:40,157 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704862814] [2021-06-05 22:21:40,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:21:40,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:21:40,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:21:40,345 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:21:40,346 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704862814] [2021-06-05 22:21:40,346 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704862814] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:21:40,346 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:21:40,346 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:21:40,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901778752] [2021-06-05 22:21:40,346 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:21:40,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:21:40,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:21:40,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:21:40,346 INFO L87 Difference]: Start difference. First operand 5424 states and 19005 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:41,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:21:41,225 INFO L93 Difference]: Finished difference Result 6179 states and 21553 transitions. [2021-06-05 22:21:41,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 22:21:41,226 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:21:41,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:21:41,235 INFO L225 Difference]: With dead ends: 6179 [2021-06-05 22:21:41,235 INFO L226 Difference]: Without dead ends: 6046 [2021-06-05 22:21:41,236 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 516.6ms TimeCoverageRelationStatistics Valid=154, Invalid=1406, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 22:21:41,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6046 states. [2021-06-05 22:21:41,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6046 to 5382. [2021-06-05 22:21:41,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5382 states, 5381 states have (on average 3.5086415164467573) internal successors, (18880), 5381 states have internal predecessors, (18880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:41,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5382 states to 5382 states and 18880 transitions. [2021-06-05 22:21:41,313 INFO L78 Accepts]: Start accepts. Automaton has 5382 states and 18880 transitions. Word has length 47 [2021-06-05 22:21:41,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:21:41,313 INFO L482 AbstractCegarLoop]: Abstraction has 5382 states and 18880 transitions. [2021-06-05 22:21:41,314 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:41,314 INFO L276 IsEmpty]: Start isEmpty. Operand 5382 states and 18880 transitions. [2021-06-05 22:21:41,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:21:41,320 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:21:41,320 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:21:41,320 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-06-05 22:21:41,320 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:21:41,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:21:41,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1690756520, now seen corresponding path program 43 times [2021-06-05 22:21:41,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:21:41,321 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864909703] [2021-06-05 22:21:41,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:21:41,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:21:41,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:21:41,503 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:21:41,503 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864909703] [2021-06-05 22:21:41,503 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864909703] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:21:41,503 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:21:41,503 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:21:41,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475062856] [2021-06-05 22:21:41,504 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:21:41,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:21:41,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:21:41,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:21:41,504 INFO L87 Difference]: Start difference. First operand 5382 states and 18880 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:42,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:21:42,638 INFO L93 Difference]: Finished difference Result 6474 states and 22562 transitions. [2021-06-05 22:21:42,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 22:21:42,639 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:21:42,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:21:42,649 INFO L225 Difference]: With dead ends: 6474 [2021-06-05 22:21:42,649 INFO L226 Difference]: Without dead ends: 6289 [2021-06-05 22:21:42,650 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 498 ImplicationChecksByTransitivity, 707.8ms TimeCoverageRelationStatistics Valid=220, Invalid=2132, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 22:21:42,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6289 states. [2021-06-05 22:21:42,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6289 to 5386. [2021-06-05 22:21:42,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5386 states, 5385 states have (on average 3.5078922934076138) internal successors, (18890), 5385 states have internal predecessors, (18890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:42,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5386 states to 5386 states and 18890 transitions. [2021-06-05 22:21:42,724 INFO L78 Accepts]: Start accepts. Automaton has 5386 states and 18890 transitions. Word has length 47 [2021-06-05 22:21:42,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:21:42,724 INFO L482 AbstractCegarLoop]: Abstraction has 5386 states and 18890 transitions. [2021-06-05 22:21:42,724 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:42,724 INFO L276 IsEmpty]: Start isEmpty. Operand 5386 states and 18890 transitions. [2021-06-05 22:21:42,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:21:42,730 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:21:42,731 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:21:42,731 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-06-05 22:21:42,731 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:21:42,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:21:42,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1573264778, now seen corresponding path program 44 times [2021-06-05 22:21:42,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:21:42,731 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111741843] [2021-06-05 22:21:42,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:21:42,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:21:42,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:21:42,921 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:21:42,921 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111741843] [2021-06-05 22:21:42,921 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111741843] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:21:42,921 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:21:42,921 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:21:42,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176839353] [2021-06-05 22:21:42,922 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:21:42,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:21:42,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:21:42,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:21:42,922 INFO L87 Difference]: Start difference. First operand 5386 states and 18890 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:44,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:21:44,046 INFO L93 Difference]: Finished difference Result 6566 states and 22765 transitions. [2021-06-05 22:21:44,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 22:21:44,046 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:21:44,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:21:44,057 INFO L225 Difference]: With dead ends: 6566 [2021-06-05 22:21:44,058 INFO L226 Difference]: Without dead ends: 6429 [2021-06-05 22:21:44,058 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 681.8ms TimeCoverageRelationStatistics Valid=225, Invalid=2127, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 22:21:44,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6429 states. [2021-06-05 22:21:44,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6429 to 5392. [2021-06-05 22:21:44,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5392 states, 5391 states have (on average 3.5063995548135782) internal successors, (18903), 5391 states have internal predecessors, (18903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:44,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5392 states to 5392 states and 18903 transitions. [2021-06-05 22:21:44,137 INFO L78 Accepts]: Start accepts. Automaton has 5392 states and 18903 transitions. Word has length 47 [2021-06-05 22:21:44,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:21:44,137 INFO L482 AbstractCegarLoop]: Abstraction has 5392 states and 18903 transitions. [2021-06-05 22:21:44,137 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:44,137 INFO L276 IsEmpty]: Start isEmpty. Operand 5392 states and 18903 transitions. [2021-06-05 22:21:44,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:21:44,143 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:21:44,144 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:21:44,144 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-06-05 22:21:44,144 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:21:44,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:21:44,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1150281082, now seen corresponding path program 45 times [2021-06-05 22:21:44,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:21:44,144 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120569970] [2021-06-05 22:21:44,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:21:44,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:21:44,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:21:44,328 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:21:44,328 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120569970] [2021-06-05 22:21:44,328 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120569970] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:21:44,328 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:21:44,328 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:21:44,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119586352] [2021-06-05 22:21:44,329 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:21:44,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:21:44,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:21:44,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:21:44,329 INFO L87 Difference]: Start difference. First operand 5392 states and 18903 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:46,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:21:46,162 INFO L93 Difference]: Finished difference Result 8647 states and 30313 transitions. [2021-06-05 22:21:46,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 22:21:46,162 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:21:46,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:21:46,176 INFO L225 Difference]: With dead ends: 8647 [2021-06-05 22:21:46,176 INFO L226 Difference]: Without dead ends: 8552 [2021-06-05 22:21:46,177 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1004 ImplicationChecksByTransitivity, 967.2ms TimeCoverageRelationStatistics Valid=334, Invalid=3572, Unknown=0, NotChecked=0, Total=3906 [2021-06-05 22:21:46,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8552 states. [2021-06-05 22:21:46,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8552 to 5390. [2021-06-05 22:21:46,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5390 states, 5389 states have (on average 3.5078864353312302) internal successors, (18904), 5389 states have internal predecessors, (18904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:46,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5390 states to 5390 states and 18904 transitions. [2021-06-05 22:21:46,268 INFO L78 Accepts]: Start accepts. Automaton has 5390 states and 18904 transitions. Word has length 47 [2021-06-05 22:21:46,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:21:46,268 INFO L482 AbstractCegarLoop]: Abstraction has 5390 states and 18904 transitions. [2021-06-05 22:21:46,268 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:46,268 INFO L276 IsEmpty]: Start isEmpty. Operand 5390 states and 18904 transitions. [2021-06-05 22:21:46,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:21:46,275 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:21:46,275 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:21:46,275 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-06-05 22:21:46,275 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:21:46,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:21:46,275 INFO L82 PathProgramCache]: Analyzing trace with hash -851389404, now seen corresponding path program 46 times [2021-06-05 22:21:46,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:21:46,275 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23247484] [2021-06-05 22:21:46,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:21:46,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:21:46,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:21:46,460 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:21:46,460 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23247484] [2021-06-05 22:21:46,460 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23247484] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:21:46,460 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:21:46,460 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:21:46,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520565467] [2021-06-05 22:21:46,461 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:21:46,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:21:46,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:21:46,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:21:46,461 INFO L87 Difference]: Start difference. First operand 5390 states and 18904 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:47,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:21:47,501 INFO L93 Difference]: Finished difference Result 6515 states and 22598 transitions. [2021-06-05 22:21:47,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 22:21:47,501 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:21:47,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:21:47,512 INFO L225 Difference]: With dead ends: 6515 [2021-06-05 22:21:47,512 INFO L226 Difference]: Without dead ends: 6418 [2021-06-05 22:21:47,512 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 659.7ms TimeCoverageRelationStatistics Valid=209, Invalid=1953, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 22:21:47,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6418 states. [2021-06-05 22:21:47,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6418 to 5398. [2021-06-05 22:21:47,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5398 states, 5397 states have (on average 3.5060218639985177) internal successors, (18922), 5397 states have internal predecessors, (18922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:47,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5398 states to 5398 states and 18922 transitions. [2021-06-05 22:21:47,614 INFO L78 Accepts]: Start accepts. Automaton has 5398 states and 18922 transitions. Word has length 47 [2021-06-05 22:21:47,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:21:47,614 INFO L482 AbstractCegarLoop]: Abstraction has 5398 states and 18922 transitions. [2021-06-05 22:21:47,614 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:47,614 INFO L276 IsEmpty]: Start isEmpty. Operand 5398 states and 18922 transitions. [2021-06-05 22:21:47,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:21:47,621 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:21:47,621 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:21:47,621 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-06-05 22:21:47,622 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:21:47,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:21:47,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1718157382, now seen corresponding path program 47 times [2021-06-05 22:21:47,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:21:47,622 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348685562] [2021-06-05 22:21:47,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:21:47,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:21:47,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:21:47,810 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:21:47,810 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348685562] [2021-06-05 22:21:47,811 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348685562] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:21:47,811 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:21:47,811 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:21:47,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119792523] [2021-06-05 22:21:47,811 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:21:47,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:21:47,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:21:47,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:21:47,811 INFO L87 Difference]: Start difference. First operand 5398 states and 18922 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:48,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:21:48,781 INFO L93 Difference]: Finished difference Result 6336 states and 22053 transitions. [2021-06-05 22:21:48,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 22:21:48,781 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:21:48,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:21:48,792 INFO L225 Difference]: With dead ends: 6336 [2021-06-05 22:21:48,792 INFO L226 Difference]: Without dead ends: 6237 [2021-06-05 22:21:48,792 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 580.0ms TimeCoverageRelationStatistics Valid=180, Invalid=1626, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 22:21:48,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6237 states. [2021-06-05 22:21:48,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6237 to 5390. [2021-06-05 22:21:48,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5390 states, 5389 states have (on average 3.507515308962702) internal successors, (18902), 5389 states have internal predecessors, (18902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:48,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5390 states to 5390 states and 18902 transitions. [2021-06-05 22:21:48,871 INFO L78 Accepts]: Start accepts. Automaton has 5390 states and 18902 transitions. Word has length 47 [2021-06-05 22:21:48,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:21:48,871 INFO L482 AbstractCegarLoop]: Abstraction has 5390 states and 18902 transitions. [2021-06-05 22:21:48,871 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:48,871 INFO L276 IsEmpty]: Start isEmpty. Operand 5390 states and 18902 transitions. [2021-06-05 22:21:48,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:21:48,878 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:21:48,878 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:21:48,878 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-06-05 22:21:48,878 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:21:48,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:21:48,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1501065350, now seen corresponding path program 48 times [2021-06-05 22:21:48,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:21:48,879 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726135253] [2021-06-05 22:21:48,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:21:48,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:21:49,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:21:49,099 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:21:49,099 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726135253] [2021-06-05 22:21:49,099 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726135253] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:21:49,099 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:21:49,099 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:21:49,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507555927] [2021-06-05 22:21:49,099 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:21:49,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:21:49,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:21:49,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:21:49,100 INFO L87 Difference]: Start difference. First operand 5390 states and 18902 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:50,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:21:50,030 INFO L93 Difference]: Finished difference Result 6321 states and 22036 transitions. [2021-06-05 22:21:50,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 22:21:50,031 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:21:50,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:21:50,041 INFO L225 Difference]: With dead ends: 6321 [2021-06-05 22:21:50,041 INFO L226 Difference]: Without dead ends: 6176 [2021-06-05 22:21:50,042 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 567.4ms TimeCoverageRelationStatistics Valid=166, Invalid=1474, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 22:21:50,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6176 states. [2021-06-05 22:21:50,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6176 to 5402. [2021-06-05 22:21:50,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5402 states, 5401 states have (on average 3.505276800592483) internal successors, (18932), 5401 states have internal predecessors, (18932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:50,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5402 states to 5402 states and 18932 transitions. [2021-06-05 22:21:50,125 INFO L78 Accepts]: Start accepts. Automaton has 5402 states and 18932 transitions. Word has length 47 [2021-06-05 22:21:50,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:21:50,125 INFO L482 AbstractCegarLoop]: Abstraction has 5402 states and 18932 transitions. [2021-06-05 22:21:50,125 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:50,125 INFO L276 IsEmpty]: Start isEmpty. Operand 5402 states and 18932 transitions. [2021-06-05 22:21:50,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:21:50,133 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:21:50,133 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:21:50,133 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-06-05 22:21:50,133 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:21:50,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:21:50,133 INFO L82 PathProgramCache]: Analyzing trace with hash 850449240, now seen corresponding path program 49 times [2021-06-05 22:21:50,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:21:50,133 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002255203] [2021-06-05 22:21:50,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:21:50,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:21:50,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:21:50,366 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:21:50,366 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002255203] [2021-06-05 22:21:50,366 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002255203] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:21:50,366 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:21:50,366 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:21:50,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24010423] [2021-06-05 22:21:50,366 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:21:50,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:21:50,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:21:50,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:21:50,367 INFO L87 Difference]: Start difference. First operand 5402 states and 18932 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:51,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:21:51,385 INFO L93 Difference]: Finished difference Result 6342 states and 22040 transitions. [2021-06-05 22:21:51,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 22:21:51,386 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:21:51,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:21:51,397 INFO L225 Difference]: With dead ends: 6342 [2021-06-05 22:21:51,397 INFO L226 Difference]: Without dead ends: 6245 [2021-06-05 22:21:51,397 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 617.4ms TimeCoverageRelationStatistics Valid=175, Invalid=1631, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 22:21:51,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6245 states. [2021-06-05 22:21:51,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6245 to 5408. [2021-06-05 22:21:51,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5408 states, 5407 states have (on average 3.5041612724246347) internal successors, (18947), 5407 states have internal predecessors, (18947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:51,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5408 states to 5408 states and 18947 transitions. [2021-06-05 22:21:51,476 INFO L78 Accepts]: Start accepts. Automaton has 5408 states and 18947 transitions. Word has length 47 [2021-06-05 22:21:51,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:21:51,476 INFO L482 AbstractCegarLoop]: Abstraction has 5408 states and 18947 transitions. [2021-06-05 22:21:51,476 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:51,476 INFO L276 IsEmpty]: Start isEmpty. Operand 5408 states and 18947 transitions. [2021-06-05 22:21:51,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:21:51,482 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:21:51,482 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:21:51,483 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-06-05 22:21:51,483 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:21:51,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:21:51,483 INFO L82 PathProgramCache]: Analyzing trace with hash -874971270, now seen corresponding path program 50 times [2021-06-05 22:21:51,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:21:51,483 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900915027] [2021-06-05 22:21:51,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:21:51,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:21:51,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:21:51,676 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:21:51,676 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900915027] [2021-06-05 22:21:51,676 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900915027] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:21:51,676 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:21:51,676 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:21:51,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988019322] [2021-06-05 22:21:51,676 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:21:51,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:21:51,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:21:51,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:21:51,677 INFO L87 Difference]: Start difference. First operand 5408 states and 18947 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:52,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:21:52,586 INFO L93 Difference]: Finished difference Result 6163 states and 21495 transitions. [2021-06-05 22:21:52,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 22:21:52,586 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:21:52,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:21:52,597 INFO L225 Difference]: With dead ends: 6163 [2021-06-05 22:21:52,597 INFO L226 Difference]: Without dead ends: 6042 [2021-06-05 22:21:52,597 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 538.2ms TimeCoverageRelationStatistics Valid=157, Invalid=1403, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 22:21:52,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6042 states. [2021-06-05 22:21:52,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6042 to 5378. [2021-06-05 22:21:52,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5378 states, 5377 states have (on average 3.5093918541937885) internal successors, (18870), 5377 states have internal predecessors, (18870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:52,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5378 states to 5378 states and 18870 transitions. [2021-06-05 22:21:52,674 INFO L78 Accepts]: Start accepts. Automaton has 5378 states and 18870 transitions. Word has length 47 [2021-06-05 22:21:52,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:21:52,674 INFO L482 AbstractCegarLoop]: Abstraction has 5378 states and 18870 transitions. [2021-06-05 22:21:52,674 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:52,674 INFO L276 IsEmpty]: Start isEmpty. Operand 5378 states and 18870 transitions. [2021-06-05 22:21:52,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:21:52,681 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:21:52,681 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:21:52,681 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-06-05 22:21:52,681 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:21:52,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:21:52,681 INFO L82 PathProgramCache]: Analyzing trace with hash -828755364, now seen corresponding path program 51 times [2021-06-05 22:21:52,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:21:52,681 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909916139] [2021-06-05 22:21:52,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:21:52,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:21:52,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:21:52,894 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:21:52,894 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909916139] [2021-06-05 22:21:52,894 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909916139] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:21:52,894 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:21:52,894 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 22:21:52,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570590544] [2021-06-05 22:21:52,894 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 22:21:52,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:21:52,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 22:21:52,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2021-06-05 22:21:52,895 INFO L87 Difference]: Start difference. First operand 5378 states and 18870 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:53,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:21:53,729 INFO L93 Difference]: Finished difference Result 6353 states and 22148 transitions. [2021-06-05 22:21:53,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 22:21:53,730 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:21:53,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:21:53,740 INFO L225 Difference]: With dead ends: 6353 [2021-06-05 22:21:53,740 INFO L226 Difference]: Without dead ends: 6216 [2021-06-05 22:21:53,741 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 542.5ms TimeCoverageRelationStatistics Valid=148, Invalid=1258, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 22:21:53,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6216 states. [2021-06-05 22:21:53,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6216 to 5458. [2021-06-05 22:21:53,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5458 states, 5457 states have (on average 3.507421660252886) internal successors, (19140), 5457 states have internal predecessors, (19140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:53,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5458 states to 5458 states and 19140 transitions. [2021-06-05 22:21:53,818 INFO L78 Accepts]: Start accepts. Automaton has 5458 states and 19140 transitions. Word has length 47 [2021-06-05 22:21:53,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:21:53,819 INFO L482 AbstractCegarLoop]: Abstraction has 5458 states and 19140 transitions. [2021-06-05 22:21:53,819 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:53,819 INFO L276 IsEmpty]: Start isEmpty. Operand 5458 states and 19140 transitions. [2021-06-05 22:21:53,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:21:53,825 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:21:53,826 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:21:53,826 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-06-05 22:21:53,826 INFO L430 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:21:53,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:21:53,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1637695972, now seen corresponding path program 52 times [2021-06-05 22:21:53,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:21:53,826 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480411239] [2021-06-05 22:21:53,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:21:53,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:21:53,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:21:53,995 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:21:53,995 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480411239] [2021-06-05 22:21:53,995 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480411239] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:21:53,995 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:21:53,995 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:21:53,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090221872] [2021-06-05 22:21:53,995 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:21:53,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:21:53,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:21:53,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:21:53,996 INFO L87 Difference]: Start difference. First operand 5458 states and 19140 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:54,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:21:54,913 INFO L93 Difference]: Finished difference Result 6337 states and 22092 transitions. [2021-06-05 22:21:54,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 22:21:54,913 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:21:54,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:21:54,924 INFO L225 Difference]: With dead ends: 6337 [2021-06-05 22:21:54,924 INFO L226 Difference]: Without dead ends: 6192 [2021-06-05 22:21:54,924 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 545.7ms TimeCoverageRelationStatistics Valid=164, Invalid=1476, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 22:21:54,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6192 states. [2021-06-05 22:21:54,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6192 to 5458. [2021-06-05 22:21:54,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5458 states, 5457 states have (on average 3.503023639362287) internal successors, (19116), 5457 states have internal predecessors, (19116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:55,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5458 states to 5458 states and 19116 transitions. [2021-06-05 22:21:55,003 INFO L78 Accepts]: Start accepts. Automaton has 5458 states and 19116 transitions. Word has length 47 [2021-06-05 22:21:55,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:21:55,003 INFO L482 AbstractCegarLoop]: Abstraction has 5458 states and 19116 transitions. [2021-06-05 22:21:55,003 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:55,003 INFO L276 IsEmpty]: Start isEmpty. Operand 5458 states and 19116 transitions. [2021-06-05 22:21:55,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:21:55,011 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:21:55,011 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:21:55,011 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-06-05 22:21:55,011 INFO L430 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:21:55,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:21:55,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1911351332, now seen corresponding path program 53 times [2021-06-05 22:21:55,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:21:55,012 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483112157] [2021-06-05 22:21:55,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:21:55,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:21:55,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:21:55,186 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:21:55,186 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483112157] [2021-06-05 22:21:55,186 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483112157] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:21:55,186 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:21:55,187 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:21:55,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219199146] [2021-06-05 22:21:55,187 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:21:55,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:21:55,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:21:55,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:21:55,187 INFO L87 Difference]: Start difference. First operand 5458 states and 19116 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:56,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:21:56,122 INFO L93 Difference]: Finished difference Result 6385 states and 22268 transitions. [2021-06-05 22:21:56,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 22:21:56,122 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:21:56,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:21:56,133 INFO L225 Difference]: With dead ends: 6385 [2021-06-05 22:21:56,134 INFO L226 Difference]: Without dead ends: 6136 [2021-06-05 22:21:56,134 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 561.7ms TimeCoverageRelationStatistics Valid=164, Invalid=1476, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 22:21:56,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6136 states. [2021-06-05 22:21:56,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6136 to 5394. [2021-06-05 22:21:56,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5394 states, 5393 states have (on average 3.506026330428333) internal successors, (18908), 5393 states have internal predecessors, (18908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:56,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5394 states to 5394 states and 18908 transitions. [2021-06-05 22:21:56,220 INFO L78 Accepts]: Start accepts. Automaton has 5394 states and 18908 transitions. Word has length 47 [2021-06-05 22:21:56,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:21:56,220 INFO L482 AbstractCegarLoop]: Abstraction has 5394 states and 18908 transitions. [2021-06-05 22:21:56,220 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:56,220 INFO L276 IsEmpty]: Start isEmpty. Operand 5394 states and 18908 transitions. [2021-06-05 22:21:56,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:21:56,227 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:21:56,227 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:21:56,227 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-06-05 22:21:56,227 INFO L430 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:21:56,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:21:56,228 INFO L82 PathProgramCache]: Analyzing trace with hash -176032070, now seen corresponding path program 54 times [2021-06-05 22:21:56,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:21:56,228 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971878835] [2021-06-05 22:21:56,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:21:56,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:21:56,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:21:56,414 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:21:56,414 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971878835] [2021-06-05 22:21:56,414 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971878835] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:21:56,414 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:21:56,414 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:21:56,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831337743] [2021-06-05 22:21:56,414 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:21:56,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:21:56,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:21:56,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:21:56,415 INFO L87 Difference]: Start difference. First operand 5394 states and 18908 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:57,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:21:57,329 INFO L93 Difference]: Finished difference Result 6273 states and 21852 transitions. [2021-06-05 22:21:57,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 22:21:57,329 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:21:57,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:21:57,340 INFO L225 Difference]: With dead ends: 6273 [2021-06-05 22:21:57,340 INFO L226 Difference]: Without dead ends: 6136 [2021-06-05 22:21:57,340 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 538.2ms TimeCoverageRelationStatistics Valid=157, Invalid=1403, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 22:21:57,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6136 states. [2021-06-05 22:21:57,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6136 to 5412. [2021-06-05 22:21:57,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5412 states, 5411 states have (on average 3.50267972648309) internal successors, (18953), 5411 states have internal predecessors, (18953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:57,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5412 states to 5412 states and 18953 transitions. [2021-06-05 22:21:57,424 INFO L78 Accepts]: Start accepts. Automaton has 5412 states and 18953 transitions. Word has length 47 [2021-06-05 22:21:57,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:21:57,424 INFO L482 AbstractCegarLoop]: Abstraction has 5412 states and 18953 transitions. [2021-06-05 22:21:57,424 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:57,424 INFO L276 IsEmpty]: Start isEmpty. Operand 5412 states and 18953 transitions. [2021-06-05 22:21:57,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:21:57,431 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:21:57,431 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:21:57,432 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-06-05 22:21:57,432 INFO L430 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:21:57,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:21:57,432 INFO L82 PathProgramCache]: Analyzing trace with hash -984972678, now seen corresponding path program 55 times [2021-06-05 22:21:57,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:21:57,432 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180730870] [2021-06-05 22:21:57,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:21:57,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:21:57,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:21:57,619 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:21:57,619 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180730870] [2021-06-05 22:21:57,619 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180730870] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:21:57,620 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:21:57,620 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:21:57,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553623046] [2021-06-05 22:21:57,620 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:21:57,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:21:57,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:21:57,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:21:57,620 INFO L87 Difference]: Start difference. First operand 5412 states and 18953 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:58,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:21:58,626 INFO L93 Difference]: Finished difference Result 6257 states and 21784 transitions. [2021-06-05 22:21:58,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 22:21:58,627 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:21:58,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:21:58,637 INFO L225 Difference]: With dead ends: 6257 [2021-06-05 22:21:58,638 INFO L226 Difference]: Without dead ends: 6112 [2021-06-05 22:21:58,638 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 603.5ms TimeCoverageRelationStatistics Valid=174, Invalid=1632, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 22:21:58,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6112 states. [2021-06-05 22:21:58,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6112 to 5412. [2021-06-05 22:21:58,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5412 states, 5411 states have (on average 3.50157087414526) internal successors, (18947), 5411 states have internal predecessors, (18947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:58,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5412 states to 5412 states and 18947 transitions. [2021-06-05 22:21:58,717 INFO L78 Accepts]: Start accepts. Automaton has 5412 states and 18947 transitions. Word has length 47 [2021-06-05 22:21:58,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:21:58,717 INFO L482 AbstractCegarLoop]: Abstraction has 5412 states and 18947 transitions. [2021-06-05 22:21:58,717 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:21:58,717 INFO L276 IsEmpty]: Start isEmpty. Operand 5412 states and 18947 transitions. [2021-06-05 22:21:58,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:21:58,723 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:21:58,724 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:21:58,724 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-06-05 22:21:58,724 INFO L430 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:21:58,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:21:58,724 INFO L82 PathProgramCache]: Analyzing trace with hash -85076900, now seen corresponding path program 56 times [2021-06-05 22:21:58,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:21:58,724 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539431764] [2021-06-05 22:21:58,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:21:58,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:21:58,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:21:58,904 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:21:58,904 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539431764] [2021-06-05 22:21:58,905 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539431764] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:21:58,905 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:21:58,905 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:21:58,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564460548] [2021-06-05 22:21:58,905 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:21:58,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:21:58,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:21:58,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:21:58,905 INFO L87 Difference]: Start difference. First operand 5412 states and 18947 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:01,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:22:01,197 INFO L93 Difference]: Finished difference Result 9782 states and 34633 transitions. [2021-06-05 22:22:01,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-05 22:22:01,197 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:22:01,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:22:01,213 INFO L225 Difference]: With dead ends: 9782 [2021-06-05 22:22:01,213 INFO L226 Difference]: Without dead ends: 9645 [2021-06-05 22:22:01,214 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1142 ImplicationChecksByTransitivity, 1221.9ms TimeCoverageRelationStatistics Valid=418, Invalid=3872, Unknown=0, NotChecked=0, Total=4290 [2021-06-05 22:22:01,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9645 states. [2021-06-05 22:22:01,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9645 to 5502. [2021-06-05 22:22:01,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5502 states, 5501 states have (on average 3.498636611525177) internal successors, (19246), 5501 states have internal predecessors, (19246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:01,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5502 states to 5502 states and 19246 transitions. [2021-06-05 22:22:01,309 INFO L78 Accepts]: Start accepts. Automaton has 5502 states and 19246 transitions. Word has length 47 [2021-06-05 22:22:01,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:22:01,310 INFO L482 AbstractCegarLoop]: Abstraction has 5502 states and 19246 transitions. [2021-06-05 22:22:01,310 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:01,310 INFO L276 IsEmpty]: Start isEmpty. Operand 5502 states and 19246 transitions. [2021-06-05 22:22:01,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:22:01,316 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:22:01,317 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:22:01,317 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-06-05 22:22:01,317 INFO L430 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:22:01,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:22:01,317 INFO L82 PathProgramCache]: Analyzing trace with hash -935728808, now seen corresponding path program 57 times [2021-06-05 22:22:01,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:22:01,317 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542565566] [2021-06-05 22:22:01,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:22:01,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:22:01,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:22:01,507 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:22:01,507 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542565566] [2021-06-05 22:22:01,508 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542565566] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:22:01,508 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:22:01,508 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:22:01,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024428862] [2021-06-05 22:22:01,508 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:22:01,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:22:01,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:22:01,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:22:01,508 INFO L87 Difference]: Start difference. First operand 5502 states and 19246 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:03,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:22:03,934 INFO L93 Difference]: Finished difference Result 10309 states and 36819 transitions. [2021-06-05 22:22:03,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-05 22:22:03,935 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:22:03,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:22:03,952 INFO L225 Difference]: With dead ends: 10309 [2021-06-05 22:22:03,952 INFO L226 Difference]: Without dead ends: 10202 [2021-06-05 22:22:03,952 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1392 ImplicationChecksByTransitivity, 1324.1ms TimeCoverageRelationStatistics Valid=441, Invalid=4529, Unknown=0, NotChecked=0, Total=4970 [2021-06-05 22:22:03,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10202 states. [2021-06-05 22:22:04,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10202 to 5480. [2021-06-05 22:22:04,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5480 states, 5479 states have (on average 3.5019164081036687) internal successors, (19187), 5479 states have internal predecessors, (19187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:04,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5480 states to 5480 states and 19187 transitions. [2021-06-05 22:22:04,049 INFO L78 Accepts]: Start accepts. Automaton has 5480 states and 19187 transitions. Word has length 47 [2021-06-05 22:22:04,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:22:04,049 INFO L482 AbstractCegarLoop]: Abstraction has 5480 states and 19187 transitions. [2021-06-05 22:22:04,049 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:04,049 INFO L276 IsEmpty]: Start isEmpty. Operand 5480 states and 19187 transitions. [2021-06-05 22:22:04,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:22:04,056 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:22:04,056 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:22:04,056 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-06-05 22:22:04,056 INFO L430 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:22:04,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:22:04,056 INFO L82 PathProgramCache]: Analyzing trace with hash 744872638, now seen corresponding path program 58 times [2021-06-05 22:22:04,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:22:04,057 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89000814] [2021-06-05 22:22:04,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:22:04,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:22:04,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:22:04,245 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:22:04,245 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89000814] [2021-06-05 22:22:04,245 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89000814] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:22:04,245 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:22:04,245 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:22:04,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053239474] [2021-06-05 22:22:04,246 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:22:04,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:22:04,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:22:04,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:22:04,246 INFO L87 Difference]: Start difference. First operand 5480 states and 19187 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:05,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:22:05,355 INFO L93 Difference]: Finished difference Result 6505 states and 22565 transitions. [2021-06-05 22:22:05,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 22:22:05,355 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:22:05,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:22:05,366 INFO L225 Difference]: With dead ends: 6505 [2021-06-05 22:22:05,366 INFO L226 Difference]: Without dead ends: 6384 [2021-06-05 22:22:05,367 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 664.2ms TimeCoverageRelationStatistics Valid=203, Invalid=1959, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 22:22:05,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6384 states. [2021-06-05 22:22:05,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6384 to 5486. [2021-06-05 22:22:05,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5486 states, 5485 states have (on average 3.5004557885141296) internal successors, (19200), 5485 states have internal predecessors, (19200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:05,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5486 states to 5486 states and 19200 transitions. [2021-06-05 22:22:05,454 INFO L78 Accepts]: Start accepts. Automaton has 5486 states and 19200 transitions. Word has length 47 [2021-06-05 22:22:05,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:22:05,454 INFO L482 AbstractCegarLoop]: Abstraction has 5486 states and 19200 transitions. [2021-06-05 22:22:05,454 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:05,454 INFO L276 IsEmpty]: Start isEmpty. Operand 5486 states and 19200 transitions. [2021-06-05 22:22:05,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:22:05,462 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:22:05,462 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:22:05,462 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-06-05 22:22:05,462 INFO L430 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:22:05,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:22:05,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1978673222, now seen corresponding path program 59 times [2021-06-05 22:22:05,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:22:05,462 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661367533] [2021-06-05 22:22:05,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:22:05,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:22:05,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:22:05,639 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:22:05,639 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661367533] [2021-06-05 22:22:05,639 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661367533] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:22:05,639 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:22:05,640 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:22:05,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253713547] [2021-06-05 22:22:05,640 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:22:05,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:22:05,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:22:05,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:22:05,640 INFO L87 Difference]: Start difference. First operand 5486 states and 19200 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:07,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:22:07,113 INFO L93 Difference]: Finished difference Result 7233 states and 25257 transitions. [2021-06-05 22:22:07,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 22:22:07,113 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:22:07,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:22:07,126 INFO L225 Difference]: With dead ends: 7233 [2021-06-05 22:22:07,126 INFO L226 Difference]: Without dead ends: 6989 [2021-06-05 22:22:07,126 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 813.4ms TimeCoverageRelationStatistics Valid=256, Invalid=2606, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 22:22:07,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6989 states. [2021-06-05 22:22:07,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6989 to 5554. [2021-06-05 22:22:07,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5554 states, 5553 states have (on average 3.4979290473617866) internal successors, (19424), 5553 states have internal predecessors, (19424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:07,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5554 states to 5554 states and 19424 transitions. [2021-06-05 22:22:07,219 INFO L78 Accepts]: Start accepts. Automaton has 5554 states and 19424 transitions. Word has length 47 [2021-06-05 22:22:07,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:22:07,219 INFO L482 AbstractCegarLoop]: Abstraction has 5554 states and 19424 transitions. [2021-06-05 22:22:07,219 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:07,219 INFO L276 IsEmpty]: Start isEmpty. Operand 5554 states and 19424 transitions. [2021-06-05 22:22:07,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:22:07,227 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:22:07,227 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:22:07,227 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-06-05 22:22:07,227 INFO L430 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:22:07,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:22:07,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1679781544, now seen corresponding path program 60 times [2021-06-05 22:22:07,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:22:07,227 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013172279] [2021-06-05 22:22:07,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:22:07,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:22:07,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:22:07,407 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:22:07,407 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013172279] [2021-06-05 22:22:07,407 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013172279] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:22:07,407 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:22:07,407 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:22:07,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68457191] [2021-06-05 22:22:07,408 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:22:07,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:22:07,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:22:07,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:22:07,408 INFO L87 Difference]: Start difference. First operand 5554 states and 19424 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:08,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:22:08,407 INFO L93 Difference]: Finished difference Result 6522 states and 22604 transitions. [2021-06-05 22:22:08,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 22:22:08,407 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:22:08,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:22:08,418 INFO L225 Difference]: With dead ends: 6522 [2021-06-05 22:22:08,418 INFO L226 Difference]: Without dead ends: 6425 [2021-06-05 22:22:08,418 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 603.2ms TimeCoverageRelationStatistics Valid=177, Invalid=1715, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 22:22:08,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6425 states. [2021-06-05 22:22:08,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6425 to 5568. [2021-06-05 22:22:08,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5568 states, 5567 states have (on average 3.493982396263697) internal successors, (19451), 5567 states have internal predecessors, (19451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:08,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5568 states to 5568 states and 19451 transitions. [2021-06-05 22:22:08,498 INFO L78 Accepts]: Start accepts. Automaton has 5568 states and 19451 transitions. Word has length 47 [2021-06-05 22:22:08,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:22:08,498 INFO L482 AbstractCegarLoop]: Abstraction has 5568 states and 19451 transitions. [2021-06-05 22:22:08,498 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:08,498 INFO L276 IsEmpty]: Start isEmpty. Operand 5568 states and 19451 transitions. [2021-06-05 22:22:08,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:22:08,505 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:22:08,505 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:22:08,505 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-06-05 22:22:08,505 INFO L430 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:22:08,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:22:08,505 INFO L82 PathProgramCache]: Analyzing trace with hash 889765242, now seen corresponding path program 61 times [2021-06-05 22:22:08,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:22:08,505 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326703968] [2021-06-05 22:22:08,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:22:08,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:22:08,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:22:08,684 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:22:08,684 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326703968] [2021-06-05 22:22:08,684 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326703968] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:22:08,684 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:22:08,684 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:22:08,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601362089] [2021-06-05 22:22:08,684 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:22:08,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:22:08,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:22:08,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:22:08,685 INFO L87 Difference]: Start difference. First operand 5568 states and 19451 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:09,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:22:09,611 INFO L93 Difference]: Finished difference Result 6343 states and 22059 transitions. [2021-06-05 22:22:09,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 22:22:09,611 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:22:09,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:22:09,622 INFO L225 Difference]: With dead ends: 6343 [2021-06-05 22:22:09,622 INFO L226 Difference]: Without dead ends: 6238 [2021-06-05 22:22:09,622 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 556.9ms TimeCoverageRelationStatistics Valid=162, Invalid=1560, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 22:22:09,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6238 states. [2021-06-05 22:22:09,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6238 to 5554. [2021-06-05 22:22:09,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5554 states, 5553 states have (on average 3.4968485503331532) internal successors, (19418), 5553 states have internal predecessors, (19418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:09,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5554 states to 5554 states and 19418 transitions. [2021-06-05 22:22:09,701 INFO L78 Accepts]: Start accepts. Automaton has 5554 states and 19418 transitions. Word has length 47 [2021-06-05 22:22:09,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:22:09,701 INFO L482 AbstractCegarLoop]: Abstraction has 5554 states and 19418 transitions. [2021-06-05 22:22:09,701 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:09,701 INFO L276 IsEmpty]: Start isEmpty. Operand 5554 states and 19418 transitions. [2021-06-05 22:22:09,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:22:09,709 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:22:09,709 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:22:09,709 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-06-05 22:22:09,709 INFO L430 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:22:09,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:22:09,709 INFO L82 PathProgramCache]: Analyzing trace with hash 135169546, now seen corresponding path program 62 times [2021-06-05 22:22:09,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:22:09,709 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965421906] [2021-06-05 22:22:09,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:22:09,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:22:09,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:22:09,883 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:22:09,883 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965421906] [2021-06-05 22:22:09,883 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965421906] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:22:09,883 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:22:09,883 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:22:09,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904249919] [2021-06-05 22:22:09,884 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:22:09,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:22:09,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:22:09,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:22:09,884 INFO L87 Difference]: Start difference. First operand 5554 states and 19418 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:10,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:22:10,926 INFO L93 Difference]: Finished difference Result 6616 states and 22995 transitions. [2021-06-05 22:22:10,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 22:22:10,927 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:22:10,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:22:10,938 INFO L225 Difference]: With dead ends: 6616 [2021-06-05 22:22:10,938 INFO L226 Difference]: Without dead ends: 6431 [2021-06-05 22:22:10,938 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 650.3ms TimeCoverageRelationStatistics Valid=200, Invalid=1870, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 22:22:10,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6431 states. [2021-06-05 22:22:11,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6431 to 5558. [2021-06-05 22:22:11,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5558 states, 5557 states have (on average 3.496131005938456) internal successors, (19428), 5557 states have internal predecessors, (19428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:11,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5558 states to 5558 states and 19428 transitions. [2021-06-05 22:22:11,016 INFO L78 Accepts]: Start accepts. Automaton has 5558 states and 19428 transitions. Word has length 47 [2021-06-05 22:22:11,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:22:11,016 INFO L482 AbstractCegarLoop]: Abstraction has 5558 states and 19428 transitions. [2021-06-05 22:22:11,016 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:11,016 INFO L276 IsEmpty]: Start isEmpty. Operand 5558 states and 19428 transitions. [2021-06-05 22:22:11,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:22:11,022 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:22:11,022 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:22:11,022 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-06-05 22:22:11,022 INFO L430 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:22:11,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:22:11,023 INFO L82 PathProgramCache]: Analyzing trace with hash 17677804, now seen corresponding path program 63 times [2021-06-05 22:22:11,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:22:11,023 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413981288] [2021-06-05 22:22:11,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:22:11,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:22:11,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:22:11,209 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:22:11,209 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413981288] [2021-06-05 22:22:11,209 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413981288] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:22:11,209 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:22:11,209 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:22:11,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842549417] [2021-06-05 22:22:11,209 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:22:11,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:22:11,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:22:11,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:22:11,210 INFO L87 Difference]: Start difference. First operand 5558 states and 19428 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:12,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:22:12,274 INFO L93 Difference]: Finished difference Result 6708 states and 23198 transitions. [2021-06-05 22:22:12,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 22:22:12,275 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:22:12,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:22:12,286 INFO L225 Difference]: With dead ends: 6708 [2021-06-05 22:22:12,286 INFO L226 Difference]: Without dead ends: 6571 [2021-06-05 22:22:12,286 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 662.7ms TimeCoverageRelationStatistics Valid=204, Invalid=1866, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 22:22:12,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6571 states. [2021-06-05 22:22:12,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6571 to 5564. [2021-06-05 22:22:12,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5564 states, 5563 states have (on average 3.494697105878123) internal successors, (19441), 5563 states have internal predecessors, (19441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:12,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5564 states to 5564 states and 19441 transitions. [2021-06-05 22:22:12,367 INFO L78 Accepts]: Start accepts. Automaton has 5564 states and 19441 transitions. Word has length 47 [2021-06-05 22:22:12,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:22:12,367 INFO L482 AbstractCegarLoop]: Abstraction has 5564 states and 19441 transitions. [2021-06-05 22:22:12,367 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:12,367 INFO L276 IsEmpty]: Start isEmpty. Operand 5564 states and 19441 transitions. [2021-06-05 22:22:12,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:22:12,374 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:22:12,374 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:22:12,374 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-06-05 22:22:12,374 INFO L430 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:22:12,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:22:12,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1589099240, now seen corresponding path program 64 times [2021-06-05 22:22:12,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:22:12,374 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609544449] [2021-06-05 22:22:12,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:22:12,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:22:12,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:22:12,573 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:22:12,573 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609544449] [2021-06-05 22:22:12,573 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609544449] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:22:12,573 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:22:12,573 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:22:12,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427207536] [2021-06-05 22:22:12,573 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:22:12,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:22:12,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:22:12,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:22:12,573 INFO L87 Difference]: Start difference. First operand 5564 states and 19441 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:14,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:22:14,529 INFO L93 Difference]: Finished difference Result 9630 states and 33745 transitions. [2021-06-05 22:22:14,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 22:22:14,529 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:22:14,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:22:14,546 INFO L225 Difference]: With dead ends: 9630 [2021-06-05 22:22:14,547 INFO L226 Difference]: Without dead ends: 9390 [2021-06-05 22:22:14,547 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1011 ImplicationChecksByTransitivity, 1009.1ms TimeCoverageRelationStatistics Valid=339, Invalid=3567, Unknown=0, NotChecked=0, Total=3906 [2021-06-05 22:22:14,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9390 states. [2021-06-05 22:22:14,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9390 to 5588. [2021-06-05 22:22:14,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5588 states, 5587 states have (on average 3.491856094505101) internal successors, (19509), 5587 states have internal predecessors, (19509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:14,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5588 states to 5588 states and 19509 transitions. [2021-06-05 22:22:14,651 INFO L78 Accepts]: Start accepts. Automaton has 5588 states and 19509 transitions. Word has length 47 [2021-06-05 22:22:14,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:22:14,652 INFO L482 AbstractCegarLoop]: Abstraction has 5588 states and 19509 transitions. [2021-06-05 22:22:14,652 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:14,652 INFO L276 IsEmpty]: Start isEmpty. Operand 5588 states and 19509 transitions. [2021-06-05 22:22:14,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:22:14,659 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:22:14,659 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:22:14,660 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-06-05 22:22:14,660 INFO L430 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:22:14,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:22:14,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1887990918, now seen corresponding path program 65 times [2021-06-05 22:22:14,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:22:14,660 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988206017] [2021-06-05 22:22:14,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:22:14,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:22:14,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:22:14,848 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:22:14,848 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988206017] [2021-06-05 22:22:14,848 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988206017] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:22:14,848 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:22:14,848 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:22:14,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067254714] [2021-06-05 22:22:14,848 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:22:14,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:22:14,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:22:14,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:22:14,849 INFO L87 Difference]: Start difference. First operand 5588 states and 19509 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:15,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:22:15,857 INFO L93 Difference]: Finished difference Result 6683 states and 23098 transitions. [2021-06-05 22:22:15,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 22:22:15,857 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:22:15,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:22:15,869 INFO L225 Difference]: With dead ends: 6683 [2021-06-05 22:22:15,869 INFO L226 Difference]: Without dead ends: 6586 [2021-06-05 22:22:15,869 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 617.0ms TimeCoverageRelationStatistics Valid=186, Invalid=1706, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 22:22:15,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6586 states. [2021-06-05 22:22:15,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6586 to 5596. [2021-06-05 22:22:15,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5596 states, 5595 states have (on average 3.4900804289544234) internal successors, (19527), 5595 states have internal predecessors, (19527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:15,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5596 states to 5596 states and 19527 transitions. [2021-06-05 22:22:15,958 INFO L78 Accepts]: Start accepts. Automaton has 5596 states and 19527 transitions. Word has length 47 [2021-06-05 22:22:15,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:22:15,958 INFO L482 AbstractCegarLoop]: Abstraction has 5596 states and 19527 transitions. [2021-06-05 22:22:15,958 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:15,958 INFO L276 IsEmpty]: Start isEmpty. Operand 5596 states and 19527 transitions. [2021-06-05 22:22:15,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:22:15,966 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:22:15,966 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:22:15,966 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-06-05 22:22:15,966 INFO L430 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:22:15,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:22:15,966 INFO L82 PathProgramCache]: Analyzing trace with hash 162570408, now seen corresponding path program 66 times [2021-06-05 22:22:15,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:22:15,967 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301448291] [2021-06-05 22:22:15,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:22:15,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:22:16,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:22:16,152 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:22:16,152 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301448291] [2021-06-05 22:22:16,152 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301448291] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:22:16,152 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:22:16,152 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:22:16,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876831898] [2021-06-05 22:22:16,153 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:22:16,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:22:16,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:22:16,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:22:16,153 INFO L87 Difference]: Start difference. First operand 5596 states and 19527 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:17,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:22:17,049 INFO L93 Difference]: Finished difference Result 6504 states and 22553 transitions. [2021-06-05 22:22:17,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 22:22:17,049 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:22:17,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:22:17,060 INFO L225 Difference]: With dead ends: 6504 [2021-06-05 22:22:17,060 INFO L226 Difference]: Without dead ends: 6405 [2021-06-05 22:22:17,060 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 523.5ms TimeCoverageRelationStatistics Valid=156, Invalid=1404, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 22:22:17,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6405 states. [2021-06-05 22:22:17,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6405 to 5588. [2021-06-05 22:22:17,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5588 states, 5587 states have (on average 3.4914981206371936) internal successors, (19507), 5587 states have internal predecessors, (19507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:17,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5588 states to 5588 states and 19507 transitions. [2021-06-05 22:22:17,138 INFO L78 Accepts]: Start accepts. Automaton has 5588 states and 19507 transitions. Word has length 47 [2021-06-05 22:22:17,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:22:17,138 INFO L482 AbstractCegarLoop]: Abstraction has 5588 states and 19507 transitions. [2021-06-05 22:22:17,138 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:17,138 INFO L276 IsEmpty]: Start isEmpty. Operand 5588 states and 19507 transitions. [2021-06-05 22:22:17,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:22:17,145 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:22:17,145 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:22:17,145 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-06-05 22:22:17,145 INFO L430 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:22:17,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:22:17,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1238314972, now seen corresponding path program 67 times [2021-06-05 22:22:17,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:22:17,146 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112876041] [2021-06-05 22:22:17,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:22:17,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:22:17,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:22:17,317 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:22:17,317 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112876041] [2021-06-05 22:22:17,317 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112876041] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:22:17,317 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:22:17,317 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:22:17,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829849764] [2021-06-05 22:22:17,317 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:22:17,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:22:17,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:22:17,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:22:17,318 INFO L87 Difference]: Start difference. First operand 5588 states and 19507 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:18,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:22:18,196 INFO L93 Difference]: Finished difference Result 6489 states and 22536 transitions. [2021-06-05 22:22:18,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 22:22:18,196 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:22:18,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:22:18,207 INFO L225 Difference]: With dead ends: 6489 [2021-06-05 22:22:18,207 INFO L226 Difference]: Without dead ends: 6344 [2021-06-05 22:22:18,208 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 533.5ms TimeCoverageRelationStatistics Valid=153, Invalid=1329, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 22:22:18,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6344 states. [2021-06-05 22:22:18,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6344 to 5600. [2021-06-05 22:22:18,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5600 states, 5599 states have (on average 3.4893731023397034) internal successors, (19537), 5599 states have internal predecessors, (19537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:18,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5600 states to 5600 states and 19537 transitions. [2021-06-05 22:22:18,288 INFO L78 Accepts]: Start accepts. Automaton has 5600 states and 19537 transitions. Word has length 47 [2021-06-05 22:22:18,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:22:18,288 INFO L482 AbstractCegarLoop]: Abstraction has 5600 states and 19537 transitions. [2021-06-05 22:22:18,288 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:18,288 INFO L276 IsEmpty]: Start isEmpty. Operand 5600 states and 19537 transitions. [2021-06-05 22:22:18,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:22:18,295 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:22:18,295 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:22:18,295 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-06-05 22:22:18,295 INFO L430 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:22:18,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:22:18,295 INFO L82 PathProgramCache]: Analyzing trace with hash -705137734, now seen corresponding path program 68 times [2021-06-05 22:22:18,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:22:18,295 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091307871] [2021-06-05 22:22:18,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:22:18,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:22:18,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:22:18,476 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:22:18,476 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091307871] [2021-06-05 22:22:18,476 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091307871] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:22:18,477 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:22:18,477 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:22:18,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246524863] [2021-06-05 22:22:18,477 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:22:18,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:22:18,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:22:18,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:22:18,477 INFO L87 Difference]: Start difference. First operand 5600 states and 19537 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:19,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:22:19,392 INFO L93 Difference]: Finished difference Result 6510 states and 22540 transitions. [2021-06-05 22:22:19,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 22:22:19,392 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:22:19,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:22:19,403 INFO L225 Difference]: With dead ends: 6510 [2021-06-05 22:22:19,403 INFO L226 Difference]: Without dead ends: 6413 [2021-06-05 22:22:19,404 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 564.8ms TimeCoverageRelationStatistics Valid=161, Invalid=1479, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 22:22:19,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6413 states. [2021-06-05 22:22:19,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6413 to 5606. [2021-06-05 22:22:19,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5606 states, 5605 states have (on average 3.488314005352364) internal successors, (19552), 5605 states have internal predecessors, (19552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:19,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5606 states to 5606 states and 19552 transitions. [2021-06-05 22:22:19,506 INFO L78 Accepts]: Start accepts. Automaton has 5606 states and 19552 transitions. Word has length 47 [2021-06-05 22:22:19,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:22:19,507 INFO L482 AbstractCegarLoop]: Abstraction has 5606 states and 19552 transitions. [2021-06-05 22:22:19,507 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:19,507 INFO L276 IsEmpty]: Start isEmpty. Operand 5606 states and 19552 transitions. [2021-06-05 22:22:19,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:22:19,514 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:22:19,514 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:22:19,514 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-06-05 22:22:19,514 INFO L430 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:22:19,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:22:19,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1864409052, now seen corresponding path program 69 times [2021-06-05 22:22:19,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:22:19,515 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936676533] [2021-06-05 22:22:19,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:22:19,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:22:19,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:22:19,691 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:22:19,691 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936676533] [2021-06-05 22:22:19,692 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936676533] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:22:19,692 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:22:19,692 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:22:19,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953945394] [2021-06-05 22:22:19,692 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:22:19,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:22:19,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:22:19,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:22:19,692 INFO L87 Difference]: Start difference. First operand 5606 states and 19552 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:20,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:22:20,512 INFO L93 Difference]: Finished difference Result 6331 states and 21995 transitions. [2021-06-05 22:22:20,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 22:22:20,512 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:22:20,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:22:20,523 INFO L225 Difference]: With dead ends: 6331 [2021-06-05 22:22:20,523 INFO L226 Difference]: Without dead ends: 6170 [2021-06-05 22:22:20,523 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 493.9ms TimeCoverageRelationStatistics Valid=142, Invalid=1264, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 22:22:20,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6170 states. [2021-06-05 22:22:20,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6170 to 5536. [2021-06-05 22:22:20,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5536 states, 5535 states have (on average 3.499728997289973) internal successors, (19371), 5535 states have internal predecessors, (19371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:20,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5536 states to 5536 states and 19371 transitions. [2021-06-05 22:22:20,606 INFO L78 Accepts]: Start accepts. Automaton has 5536 states and 19371 transitions. Word has length 47 [2021-06-05 22:22:20,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:22:20,606 INFO L482 AbstractCegarLoop]: Abstraction has 5536 states and 19371 transitions. [2021-06-05 22:22:20,607 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:20,607 INFO L276 IsEmpty]: Start isEmpty. Operand 5536 states and 19371 transitions. [2021-06-05 22:22:20,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:22:20,614 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:22:20,614 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:22:20,614 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-06-05 22:22:20,614 INFO L430 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:22:20,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:22:20,614 INFO L82 PathProgramCache]: Analyzing trace with hash 2095670862, now seen corresponding path program 70 times [2021-06-05 22:22:20,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:22:20,614 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419284640] [2021-06-05 22:22:20,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:22:20,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:22:20,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:22:20,777 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:22:20,777 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419284640] [2021-06-05 22:22:20,777 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419284640] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:22:20,777 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:22:20,777 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 22:22:20,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385907113] [2021-06-05 22:22:20,777 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 22:22:20,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:22:20,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 22:22:20,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2021-06-05 22:22:20,778 INFO L87 Difference]: Start difference. First operand 5536 states and 19371 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:21,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:22:21,628 INFO L93 Difference]: Finished difference Result 6663 states and 23163 transitions. [2021-06-05 22:22:21,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 22:22:21,629 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:22:21,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:22:21,639 INFO L225 Difference]: With dead ends: 6663 [2021-06-05 22:22:21,640 INFO L226 Difference]: Without dead ends: 6526 [2021-06-05 22:22:21,640 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 509.6ms TimeCoverageRelationStatistics Valid=164, Invalid=1396, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 22:22:21,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6526 states. [2021-06-05 22:22:21,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6526 to 5556. [2021-06-05 22:22:21,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5556 states, 5555 states have (on average 3.499009900990099) internal successors, (19437), 5555 states have internal predecessors, (19437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:21,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5556 states to 5556 states and 19437 transitions. [2021-06-05 22:22:21,719 INFO L78 Accepts]: Start accepts. Automaton has 5556 states and 19437 transitions. Word has length 47 [2021-06-05 22:22:21,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:22:21,719 INFO L482 AbstractCegarLoop]: Abstraction has 5556 states and 19437 transitions. [2021-06-05 22:22:21,719 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:21,719 INFO L276 IsEmpty]: Start isEmpty. Operand 5556 states and 19437 transitions. [2021-06-05 22:22:21,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:22:21,726 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:22:21,726 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:22:21,726 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-06-05 22:22:21,726 INFO L430 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:22:21,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:22:21,726 INFO L82 PathProgramCache]: Analyzing trace with hash -681600212, now seen corresponding path program 71 times [2021-06-05 22:22:21,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:22:21,726 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101629912] [2021-06-05 22:22:21,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:22:21,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:22:21,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:22:21,934 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:22:21,934 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101629912] [2021-06-05 22:22:21,934 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101629912] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:22:21,934 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:22:21,934 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:22:21,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588178216] [2021-06-05 22:22:21,934 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:22:21,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:22:21,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:22:21,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:22:21,935 INFO L87 Difference]: Start difference. First operand 5556 states and 19437 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:22,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:22:22,879 INFO L93 Difference]: Finished difference Result 6722 states and 23322 transitions. [2021-06-05 22:22:22,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 22:22:22,880 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:22:22,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:22:22,890 INFO L225 Difference]: With dead ends: 6722 [2021-06-05 22:22:22,890 INFO L226 Difference]: Without dead ends: 6633 [2021-06-05 22:22:22,891 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 599.9ms TimeCoverageRelationStatistics Valid=182, Invalid=1624, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 22:22:22,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6633 states. [2021-06-05 22:22:22,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6633 to 5652. [2021-06-05 22:22:22,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5652 states, 5651 states have (on average 3.4919483277296055) internal successors, (19733), 5651 states have internal predecessors, (19733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:22,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5652 states to 5652 states and 19733 transitions. [2021-06-05 22:22:22,972 INFO L78 Accepts]: Start accepts. Automaton has 5652 states and 19733 transitions. Word has length 47 [2021-06-05 22:22:22,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:22:22,973 INFO L482 AbstractCegarLoop]: Abstraction has 5652 states and 19733 transitions. [2021-06-05 22:22:22,973 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:22,973 INFO L276 IsEmpty]: Start isEmpty. Operand 5652 states and 19733 transitions. [2021-06-05 22:22:22,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:22:22,980 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:22:22,980 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:22:22,980 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-06-05 22:22:22,980 INFO L430 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:22:22,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:22:22,981 INFO L82 PathProgramCache]: Analyzing trace with hash -247570866, now seen corresponding path program 72 times [2021-06-05 22:22:22,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:22:22,981 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920874200] [2021-06-05 22:22:22,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:22:22,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:22:23,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:22:23,161 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:22:23,161 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920874200] [2021-06-05 22:22:23,161 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920874200] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:22:23,161 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:22:23,161 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:22:23,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528258926] [2021-06-05 22:22:23,162 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:22:23,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:22:23,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:22:23,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:22:23,162 INFO L87 Difference]: Start difference. First operand 5652 states and 19733 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:24,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:22:24,106 INFO L93 Difference]: Finished difference Result 6695 states and 23235 transitions. [2021-06-05 22:22:24,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 22:22:24,107 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:22:24,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:22:24,117 INFO L225 Difference]: With dead ends: 6695 [2021-06-05 22:22:24,118 INFO L226 Difference]: Without dead ends: 6470 [2021-06-05 22:22:24,118 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 564.7ms TimeCoverageRelationStatistics Valid=173, Invalid=1633, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 22:22:24,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6470 states. [2021-06-05 22:22:24,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6470 to 5626. [2021-06-05 22:22:24,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5626 states, 5625 states have (on average 3.4922666666666666) internal successors, (19644), 5625 states have internal predecessors, (19644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:24,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5626 states to 5626 states and 19644 transitions. [2021-06-05 22:22:24,199 INFO L78 Accepts]: Start accepts. Automaton has 5626 states and 19644 transitions. Word has length 47 [2021-06-05 22:22:24,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:22:24,199 INFO L482 AbstractCegarLoop]: Abstraction has 5626 states and 19644 transitions. [2021-06-05 22:22:24,199 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:24,199 INFO L276 IsEmpty]: Start isEmpty. Operand 5626 states and 19644 transitions. [2021-06-05 22:22:24,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:22:24,206 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:22:24,206 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:22:24,206 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-06-05 22:22:24,206 INFO L430 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:22:24,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:22:24,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1313862620, now seen corresponding path program 73 times [2021-06-05 22:22:24,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:22:24,206 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608228820] [2021-06-05 22:22:24,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:22:24,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:22:24,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:22:24,415 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:22:24,415 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608228820] [2021-06-05 22:22:24,415 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608228820] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:22:24,415 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:22:24,415 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:22:24,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440131449] [2021-06-05 22:22:24,415 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:22:24,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:22:24,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:22:24,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:22:24,416 INFO L87 Difference]: Start difference. First operand 5626 states and 19644 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:25,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:22:25,387 INFO L93 Difference]: Finished difference Result 6714 states and 23296 transitions. [2021-06-05 22:22:25,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 22:22:25,387 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:22:25,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:22:25,398 INFO L225 Difference]: With dead ends: 6714 [2021-06-05 22:22:25,399 INFO L226 Difference]: Without dead ends: 6625 [2021-06-05 22:22:25,399 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 630.4ms TimeCoverageRelationStatistics Valid=188, Invalid=1704, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 22:22:25,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6625 states. [2021-06-05 22:22:25,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6625 to 5650. [2021-06-05 22:22:25,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5650 states, 5649 states have (on average 3.4908833421844574) internal successors, (19720), 5649 states have internal predecessors, (19720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:25,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5650 states to 5650 states and 19720 transitions. [2021-06-05 22:22:25,479 INFO L78 Accepts]: Start accepts. Automaton has 5650 states and 19720 transitions. Word has length 47 [2021-06-05 22:22:25,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:22:25,479 INFO L482 AbstractCegarLoop]: Abstraction has 5650 states and 19720 transitions. [2021-06-05 22:22:25,479 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:25,479 INFO L276 IsEmpty]: Start isEmpty. Operand 5650 states and 19720 transitions. [2021-06-05 22:22:25,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:22:25,486 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:22:25,486 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:22:25,486 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-06-05 22:22:25,486 INFO L430 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:22:25,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:22:25,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1747891966, now seen corresponding path program 74 times [2021-06-05 22:22:25,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:22:25,487 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992448431] [2021-06-05 22:22:25,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:22:25,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:22:25,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:22:25,651 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:22:25,651 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992448431] [2021-06-05 22:22:25,651 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992448431] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:22:25,651 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:22:25,652 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:22:25,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975159497] [2021-06-05 22:22:25,652 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:22:25,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:22:25,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:22:25,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:22:25,652 INFO L87 Difference]: Start difference. First operand 5650 states and 19720 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:26,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:22:26,576 INFO L93 Difference]: Finished difference Result 6722 states and 23316 transitions. [2021-06-05 22:22:26,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 22:22:26,576 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:22:26,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:22:26,587 INFO L225 Difference]: With dead ends: 6722 [2021-06-05 22:22:26,587 INFO L226 Difference]: Without dead ends: 6617 [2021-06-05 22:22:26,588 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 565.2ms TimeCoverageRelationStatistics Valid=183, Invalid=1709, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 22:22:26,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6617 states. [2021-06-05 22:22:26,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6617 to 5642. [2021-06-05 22:22:26,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5642 states, 5641 states have (on average 3.490870413047332) internal successors, (19692), 5641 states have internal predecessors, (19692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:26,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5642 states to 5642 states and 19692 transitions. [2021-06-05 22:22:26,669 INFO L78 Accepts]: Start accepts. Automaton has 5642 states and 19692 transitions. Word has length 47 [2021-06-05 22:22:26,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:22:26,669 INFO L482 AbstractCegarLoop]: Abstraction has 5642 states and 19692 transitions. [2021-06-05 22:22:26,669 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:26,669 INFO L276 IsEmpty]: Start isEmpty. Operand 5642 states and 19692 transitions. [2021-06-05 22:22:26,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:22:26,676 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:22:26,676 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:22:26,676 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-06-05 22:22:26,676 INFO L430 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:22:26,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:22:26,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1274141622, now seen corresponding path program 75 times [2021-06-05 22:22:26,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:22:26,677 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148829458] [2021-06-05 22:22:26,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:22:26,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:22:26,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:22:26,843 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:22:26,843 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148829458] [2021-06-05 22:22:26,843 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148829458] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:22:26,844 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:22:26,844 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:22:26,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121089245] [2021-06-05 22:22:26,844 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:22:26,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:22:26,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:22:26,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:22:26,844 INFO L87 Difference]: Start difference. First operand 5642 states and 19692 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:27,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:22:27,768 INFO L93 Difference]: Finished difference Result 6719 states and 23321 transitions. [2021-06-05 22:22:27,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 22:22:27,769 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:22:27,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:22:27,780 INFO L225 Difference]: With dead ends: 6719 [2021-06-05 22:22:27,780 INFO L226 Difference]: Without dead ends: 6494 [2021-06-05 22:22:27,780 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 554.6ms TimeCoverageRelationStatistics Valid=177, Invalid=1629, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 22:22:27,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6494 states. [2021-06-05 22:22:27,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6494 to 5562. [2021-06-05 22:22:27,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5562 states, 5561 states have (on average 3.4950548462506745) internal successors, (19436), 5561 states have internal predecessors, (19436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:27,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5562 states to 5562 states and 19436 transitions. [2021-06-05 22:22:27,861 INFO L78 Accepts]: Start accepts. Automaton has 5562 states and 19436 transitions. Word has length 47 [2021-06-05 22:22:27,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:22:27,861 INFO L482 AbstractCegarLoop]: Abstraction has 5562 states and 19436 transitions. [2021-06-05 22:22:27,861 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:27,861 INFO L276 IsEmpty]: Start isEmpty. Operand 5562 states and 19436 transitions. [2021-06-05 22:22:27,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:22:27,868 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:22:27,868 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:22:27,868 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-06-05 22:22:27,868 INFO L430 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:22:27,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:22:27,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1743793900, now seen corresponding path program 76 times [2021-06-05 22:22:27,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:22:27,869 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925171010] [2021-06-05 22:22:27,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:22:27,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:22:28,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:22:28,032 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:22:28,032 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925171010] [2021-06-05 22:22:28,032 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925171010] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:22:28,033 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:22:28,033 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:22:28,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520471677] [2021-06-05 22:22:28,033 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:22:28,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:22:28,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:22:28,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:22:28,033 INFO L87 Difference]: Start difference. First operand 5562 states and 19436 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:29,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:22:29,944 INFO L93 Difference]: Finished difference Result 8647 states and 30259 transitions. [2021-06-05 22:22:29,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 22:22:29,944 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:22:29,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:22:29,958 INFO L225 Difference]: With dead ends: 8647 [2021-06-05 22:22:29,958 INFO L226 Difference]: Without dead ends: 8510 [2021-06-05 22:22:29,959 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 958 ImplicationChecksByTransitivity, 1013.5ms TimeCoverageRelationStatistics Valid=350, Invalid=3310, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 22:22:29,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8510 states. [2021-06-05 22:22:30,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8510 to 5600. [2021-06-05 22:22:30,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5600 states, 5599 states have (on average 3.4911591355599216) internal successors, (19547), 5599 states have internal predecessors, (19547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:30,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5600 states to 5600 states and 19547 transitions. [2021-06-05 22:22:30,053 INFO L78 Accepts]: Start accepts. Automaton has 5600 states and 19547 transitions. Word has length 47 [2021-06-05 22:22:30,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:22:30,053 INFO L482 AbstractCegarLoop]: Abstraction has 5600 states and 19547 transitions. [2021-06-05 22:22:30,053 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:30,053 INFO L276 IsEmpty]: Start isEmpty. Operand 5600 states and 19547 transitions. [2021-06-05 22:22:30,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:22:30,059 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:22:30,059 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:22:30,060 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-06-05 22:22:30,060 INFO L430 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:22:30,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:22:30,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1730262478, now seen corresponding path program 77 times [2021-06-05 22:22:30,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:22:30,060 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564232597] [2021-06-05 22:22:30,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:22:30,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:22:30,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:22:30,235 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:22:30,235 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564232597] [2021-06-05 22:22:30,235 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564232597] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:22:30,235 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:22:30,235 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:22:30,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793681201] [2021-06-05 22:22:30,235 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:22:30,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:22:30,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:22:30,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:22:30,236 INFO L87 Difference]: Start difference. First operand 5600 states and 19547 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:32,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:22:32,420 INFO L93 Difference]: Finished difference Result 9979 states and 35113 transitions. [2021-06-05 22:22:32,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-05 22:22:32,420 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:22:32,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:22:32,437 INFO L225 Difference]: With dead ends: 9979 [2021-06-05 22:22:32,437 INFO L226 Difference]: Without dead ends: 9890 [2021-06-05 22:22:32,437 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1191 ImplicationChecksByTransitivity, 1203.5ms TimeCoverageRelationStatistics Valid=422, Invalid=4000, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 22:22:32,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9890 states. [2021-06-05 22:22:32,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9890 to 5604. [2021-06-05 22:22:32,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5604 states, 5603 states have (on average 3.4900945921827593) internal successors, (19555), 5603 states have internal predecessors, (19555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:32,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5604 states to 5604 states and 19555 transitions. [2021-06-05 22:22:32,529 INFO L78 Accepts]: Start accepts. Automaton has 5604 states and 19555 transitions. Word has length 47 [2021-06-05 22:22:32,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:22:32,529 INFO L482 AbstractCegarLoop]: Abstraction has 5604 states and 19555 transitions. [2021-06-05 22:22:32,529 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:32,529 INFO L276 IsEmpty]: Start isEmpty. Operand 5604 states and 19555 transitions. [2021-06-05 22:22:32,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:22:32,536 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:22:32,536 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:22:32,536 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-06-05 22:22:32,536 INFO L430 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:22:32,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:22:32,536 INFO L82 PathProgramCache]: Analyzing trace with hash 879610570, now seen corresponding path program 78 times [2021-06-05 22:22:32,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:22:32,536 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439076401] [2021-06-05 22:22:32,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:22:32,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:22:32,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:22:32,710 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:22:32,710 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439076401] [2021-06-05 22:22:32,710 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439076401] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:22:32,710 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:22:32,710 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:22:32,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5709977] [2021-06-05 22:22:32,711 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:22:32,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:22:32,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:22:32,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:22:32,711 INFO L87 Difference]: Start difference. First operand 5604 states and 19555 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:35,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:22:35,154 INFO L93 Difference]: Finished difference Result 10566 states and 37503 transitions. [2021-06-05 22:22:35,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-06-05 22:22:35,154 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:22:35,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:22:35,173 INFO L225 Difference]: With dead ends: 10566 [2021-06-05 22:22:35,174 INFO L226 Difference]: Without dead ends: 10459 [2021-06-05 22:22:35,174 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1446 ImplicationChecksByTransitivity, 1282.7ms TimeCoverageRelationStatistics Valid=445, Invalid=4667, Unknown=0, NotChecked=0, Total=5112 [2021-06-05 22:22:35,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10459 states. [2021-06-05 22:22:35,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10459 to 5566. [2021-06-05 22:22:35,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5566 states, 5565 states have (on average 3.4936208445642407) internal successors, (19442), 5565 states have internal predecessors, (19442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:35,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5566 states to 5566 states and 19442 transitions. [2021-06-05 22:22:35,278 INFO L78 Accepts]: Start accepts. Automaton has 5566 states and 19442 transitions. Word has length 47 [2021-06-05 22:22:35,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:22:35,279 INFO L482 AbstractCegarLoop]: Abstraction has 5566 states and 19442 transitions. [2021-06-05 22:22:35,279 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:35,279 INFO L276 IsEmpty]: Start isEmpty. Operand 5566 states and 19442 transitions. [2021-06-05 22:22:35,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:22:35,286 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:22:35,286 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:22:35,286 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-06-05 22:22:35,286 INFO L430 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:22:35,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:22:35,286 INFO L82 PathProgramCache]: Analyzing trace with hash 780244430, now seen corresponding path program 79 times [2021-06-05 22:22:35,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:22:35,286 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135217437] [2021-06-05 22:22:35,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:22:35,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:22:35,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:22:35,472 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:22:35,472 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135217437] [2021-06-05 22:22:35,472 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135217437] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:22:35,472 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:22:35,472 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:22:35,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098495022] [2021-06-05 22:22:35,472 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:22:35,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:22:35,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:22:35,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:22:35,473 INFO L87 Difference]: Start difference. First operand 5566 states and 19442 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:36,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:22:36,580 INFO L93 Difference]: Finished difference Result 6918 states and 23853 transitions. [2021-06-05 22:22:36,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 22:22:36,581 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:22:36,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:22:36,592 INFO L225 Difference]: With dead ends: 6918 [2021-06-05 22:22:36,592 INFO L226 Difference]: Without dead ends: 6829 [2021-06-05 22:22:36,593 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 683.9ms TimeCoverageRelationStatistics Valid=218, Invalid=2038, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 22:22:36,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6829 states. [2021-06-05 22:22:36,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6829 to 5576. [2021-06-05 22:22:36,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5576 states, 5575 states have (on average 3.4921973094170404) internal successors, (19469), 5575 states have internal predecessors, (19469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:36,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5576 states to 5576 states and 19469 transitions. [2021-06-05 22:22:36,676 INFO L78 Accepts]: Start accepts. Automaton has 5576 states and 19469 transitions. Word has length 47 [2021-06-05 22:22:36,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:22:36,676 INFO L482 AbstractCegarLoop]: Abstraction has 5576 states and 19469 transitions. [2021-06-05 22:22:36,676 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:36,676 INFO L276 IsEmpty]: Start isEmpty. Operand 5576 states and 19469 transitions. [2021-06-05 22:22:36,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:22:36,683 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:22:36,683 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:22:36,683 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-06-05 22:22:36,683 INFO L430 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:22:36,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:22:36,684 INFO L82 PathProgramCache]: Analyzing trace with hash 456582606, now seen corresponding path program 80 times [2021-06-05 22:22:36,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:22:36,684 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492899779] [2021-06-05 22:22:36,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:22:36,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:22:36,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:22:36,867 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:22:36,867 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492899779] [2021-06-05 22:22:36,867 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492899779] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:22:36,867 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:22:36,867 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:22:36,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115787594] [2021-06-05 22:22:36,868 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:22:36,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:22:36,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:22:36,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:22:36,868 INFO L87 Difference]: Start difference. First operand 5576 states and 19469 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:38,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:22:38,041 INFO L93 Difference]: Finished difference Result 6835 states and 23610 transitions. [2021-06-05 22:22:38,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 22:22:38,042 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:22:38,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:22:38,054 INFO L225 Difference]: With dead ends: 6835 [2021-06-05 22:22:38,055 INFO L226 Difference]: Without dead ends: 6714 [2021-06-05 22:22:38,055 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 742.5ms TimeCoverageRelationStatistics Valid=227, Invalid=2223, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 22:22:38,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6714 states. [2021-06-05 22:22:38,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6714 to 5572. [2021-06-05 22:22:38,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5572 states, 5571 states have (on average 3.492191707054389) internal successors, (19455), 5571 states have internal predecessors, (19455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:38,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5572 states to 5572 states and 19455 transitions. [2021-06-05 22:22:38,135 INFO L78 Accepts]: Start accepts. Automaton has 5572 states and 19455 transitions. Word has length 47 [2021-06-05 22:22:38,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:22:38,135 INFO L482 AbstractCegarLoop]: Abstraction has 5572 states and 19455 transitions. [2021-06-05 22:22:38,135 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:38,135 INFO L276 IsEmpty]: Start isEmpty. Operand 5572 states and 19455 transitions. [2021-06-05 22:22:38,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:22:38,142 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:22:38,142 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:22:38,142 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-06-05 22:22:38,142 INFO L430 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:22:38,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:22:38,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1943301430, now seen corresponding path program 81 times [2021-06-05 22:22:38,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:22:38,142 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132316219] [2021-06-05 22:22:38,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:22:38,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:22:38,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:22:38,319 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:22:38,319 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132316219] [2021-06-05 22:22:38,319 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132316219] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:22:38,319 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:22:38,319 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:22:38,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486662866] [2021-06-05 22:22:38,319 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:22:38,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:22:38,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:22:38,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:22:38,320 INFO L87 Difference]: Start difference. First operand 5572 states and 19455 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:39,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:22:39,677 INFO L93 Difference]: Finished difference Result 7413 states and 25628 transitions. [2021-06-05 22:22:39,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 22:22:39,678 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:22:39,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:22:39,691 INFO L225 Difference]: With dead ends: 7413 [2021-06-05 22:22:39,691 INFO L226 Difference]: Without dead ends: 7298 [2021-06-05 22:22:39,692 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 782.6ms TimeCoverageRelationStatistics Valid=248, Invalid=2404, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 22:22:39,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7298 states. [2021-06-05 22:22:39,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7298 to 5684. [2021-06-05 22:22:39,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5684 states, 5683 states have (on average 3.4867147633292275) internal successors, (19815), 5683 states have internal predecessors, (19815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:39,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5684 states to 5684 states and 19815 transitions. [2021-06-05 22:22:39,784 INFO L78 Accepts]: Start accepts. Automaton has 5684 states and 19815 transitions. Word has length 47 [2021-06-05 22:22:39,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:22:39,784 INFO L482 AbstractCegarLoop]: Abstraction has 5684 states and 19815 transitions. [2021-06-05 22:22:39,784 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:39,784 INFO L276 IsEmpty]: Start isEmpty. Operand 5684 states and 19815 transitions. [2021-06-05 22:22:39,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:22:39,791 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:22:39,791 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:22:39,791 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-06-05 22:22:39,791 INFO L430 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:22:39,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:22:39,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1644409752, now seen corresponding path program 82 times [2021-06-05 22:22:39,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:22:39,791 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087310752] [2021-06-05 22:22:39,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:22:39,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:22:39,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:22:39,970 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:22:39,970 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087310752] [2021-06-05 22:22:39,970 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087310752] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:22:39,970 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:22:39,970 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:22:39,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335028931] [2021-06-05 22:22:39,970 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:22:39,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:22:39,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:22:39,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:22:39,971 INFO L87 Difference]: Start difference. First operand 5684 states and 19815 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:40,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:22:40,996 INFO L93 Difference]: Finished difference Result 6907 states and 23824 transitions. [2021-06-05 22:22:40,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 22:22:40,996 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:22:40,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:22:41,007 INFO L225 Difference]: With dead ends: 6907 [2021-06-05 22:22:41,007 INFO L226 Difference]: Without dead ends: 6810 [2021-06-05 22:22:41,008 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 624.9ms TimeCoverageRelationStatistics Valid=198, Invalid=1964, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 22:22:41,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6810 states. [2021-06-05 22:22:41,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6810 to 5698. [2021-06-05 22:22:41,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5698 states, 5697 states have (on average 3.482885729331227) internal successors, (19842), 5697 states have internal predecessors, (19842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:41,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5698 states to 5698 states and 19842 transitions. [2021-06-05 22:22:41,091 INFO L78 Accepts]: Start accepts. Automaton has 5698 states and 19842 transitions. Word has length 47 [2021-06-05 22:22:41,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:22:41,091 INFO L482 AbstractCegarLoop]: Abstraction has 5698 states and 19842 transitions. [2021-06-05 22:22:41,091 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:41,091 INFO L276 IsEmpty]: Start isEmpty. Operand 5698 states and 19842 transitions. [2021-06-05 22:22:41,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:22:41,098 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:22:41,098 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:22:41,098 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-06-05 22:22:41,098 INFO L430 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:22:41,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:22:41,098 INFO L82 PathProgramCache]: Analyzing trace with hash 925137034, now seen corresponding path program 83 times [2021-06-05 22:22:41,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:22:41,098 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528414997] [2021-06-05 22:22:41,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:22:41,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:22:41,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:22:41,284 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:22:41,284 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528414997] [2021-06-05 22:22:41,284 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528414997] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:22:41,284 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:22:41,284 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:22:41,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43126388] [2021-06-05 22:22:41,284 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:22:41,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:22:41,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:22:41,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:22:41,284 INFO L87 Difference]: Start difference. First operand 5698 states and 19842 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:42,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:22:42,264 INFO L93 Difference]: Finished difference Result 6883 states and 23734 transitions. [2021-06-05 22:22:42,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 22:22:42,265 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:22:42,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:22:42,276 INFO L225 Difference]: With dead ends: 6883 [2021-06-05 22:22:42,276 INFO L226 Difference]: Without dead ends: 6778 [2021-06-05 22:22:42,276 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 573.5ms TimeCoverageRelationStatistics Valid=177, Invalid=1715, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 22:22:42,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6778 states. [2021-06-05 22:22:42,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6778 to 5684. [2021-06-05 22:22:42,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5684 states, 5683 states have (on average 3.4856589829315503) internal successors, (19809), 5683 states have internal predecessors, (19809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:42,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5684 states to 5684 states and 19809 transitions. [2021-06-05 22:22:42,359 INFO L78 Accepts]: Start accepts. Automaton has 5684 states and 19809 transitions. Word has length 47 [2021-06-05 22:22:42,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:22:42,359 INFO L482 AbstractCegarLoop]: Abstraction has 5684 states and 19809 transitions. [2021-06-05 22:22:42,359 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:42,359 INFO L276 IsEmpty]: Start isEmpty. Operand 5684 states and 19809 transitions. [2021-06-05 22:22:42,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:22:42,366 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:22:42,366 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:22:42,367 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-06-05 22:22:42,367 INFO L430 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:22:42,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:22:42,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1050262518, now seen corresponding path program 84 times [2021-06-05 22:22:42,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:22:42,367 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473832997] [2021-06-05 22:22:42,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:22:42,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:22:42,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:22:42,546 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:22:42,547 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473832997] [2021-06-05 22:22:42,547 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473832997] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:22:42,547 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:22:42,547 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:22:42,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554222748] [2021-06-05 22:22:42,547 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:22:42,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:22:42,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:22:42,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:22:42,547 INFO L87 Difference]: Start difference. First operand 5684 states and 19809 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:43,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:22:43,689 INFO L93 Difference]: Finished difference Result 6810 states and 23594 transitions. [2021-06-05 22:22:43,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 22:22:43,689 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:22:43,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:22:43,700 INFO L225 Difference]: With dead ends: 6810 [2021-06-05 22:22:43,700 INFO L226 Difference]: Without dead ends: 6721 [2021-06-05 22:22:43,701 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 739.9ms TimeCoverageRelationStatistics Valid=231, Invalid=2121, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 22:22:43,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6721 states. [2021-06-05 22:22:43,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6721 to 5704. [2021-06-05 22:22:43,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5704 states, 5703 states have (on average 3.485709275819744) internal successors, (19879), 5703 states have internal predecessors, (19879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:43,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5704 states to 5704 states and 19879 transitions. [2021-06-05 22:22:43,784 INFO L78 Accepts]: Start accepts. Automaton has 5704 states and 19879 transitions. Word has length 47 [2021-06-05 22:22:43,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:22:43,784 INFO L482 AbstractCegarLoop]: Abstraction has 5704 states and 19879 transitions. [2021-06-05 22:22:43,784 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:43,784 INFO L276 IsEmpty]: Start isEmpty. Operand 5704 states and 19879 transitions. [2021-06-05 22:22:43,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:22:43,792 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:22:43,792 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:22:43,792 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-06-05 22:22:43,792 INFO L430 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:22:43,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:22:43,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1373924342, now seen corresponding path program 85 times [2021-06-05 22:22:43,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:22:43,793 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815771590] [2021-06-05 22:22:43,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:22:43,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:22:43,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:22:43,974 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:22:43,975 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815771590] [2021-06-05 22:22:43,975 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815771590] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:22:43,975 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:22:43,975 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:22:43,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248744511] [2021-06-05 22:22:43,975 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:22:43,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:22:43,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:22:43,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:22:43,975 INFO L87 Difference]: Start difference. First operand 5704 states and 19879 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:45,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:22:45,096 INFO L93 Difference]: Finished difference Result 6822 states and 23626 transitions. [2021-06-05 22:22:45,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 22:22:45,096 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:22:45,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:22:45,108 INFO L225 Difference]: With dead ends: 6822 [2021-06-05 22:22:45,108 INFO L226 Difference]: Without dead ends: 6693 [2021-06-05 22:22:45,109 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 698.2ms TimeCoverageRelationStatistics Valid=224, Invalid=2128, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 22:22:45,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6693 states. [2021-06-05 22:22:45,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6693 to 5706. [2021-06-05 22:22:45,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5706 states, 5705 states have (on average 3.4839614373356707) internal successors, (19876), 5705 states have internal predecessors, (19876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:45,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5706 states to 5706 states and 19876 transitions. [2021-06-05 22:22:45,200 INFO L78 Accepts]: Start accepts. Automaton has 5706 states and 19876 transitions. Word has length 47 [2021-06-05 22:22:45,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:22:45,200 INFO L482 AbstractCegarLoop]: Abstraction has 5706 states and 19876 transitions. [2021-06-05 22:22:45,200 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:45,201 INFO L276 IsEmpty]: Start isEmpty. Operand 5706 states and 19876 transitions. [2021-06-05 22:22:45,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:22:45,208 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:22:45,208 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:22:45,208 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-06-05 22:22:45,208 INFO L430 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:22:45,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:22:45,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1317812888, now seen corresponding path program 86 times [2021-06-05 22:22:45,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:22:45,209 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010892060] [2021-06-05 22:22:45,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:22:45,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:22:45,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:22:45,387 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:22:45,387 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010892060] [2021-06-05 22:22:45,387 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010892060] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:22:45,387 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:22:45,388 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:22:45,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20672738] [2021-06-05 22:22:45,388 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:22:45,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:22:45,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:22:45,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:22:45,388 INFO L87 Difference]: Start difference. First operand 5706 states and 19876 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:46,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:22:46,530 INFO L93 Difference]: Finished difference Result 6855 states and 23757 transitions. [2021-06-05 22:22:46,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 22:22:46,530 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:22:46,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:22:46,542 INFO L225 Difference]: With dead ends: 6855 [2021-06-05 22:22:46,542 INFO L226 Difference]: Without dead ends: 6694 [2021-06-05 22:22:46,543 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 701.6ms TimeCoverageRelationStatistics Valid=221, Invalid=2035, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 22:22:46,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6694 states. [2021-06-05 22:22:46,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6694 to 5690. [2021-06-05 22:22:46,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5690 states, 5689 states have (on average 3.4846194410265423) internal successors, (19824), 5689 states have internal predecessors, (19824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:46,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5690 states to 5690 states and 19824 transitions. [2021-06-05 22:22:46,632 INFO L78 Accepts]: Start accepts. Automaton has 5690 states and 19824 transitions. Word has length 47 [2021-06-05 22:22:46,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:22:46,632 INFO L482 AbstractCegarLoop]: Abstraction has 5690 states and 19824 transitions. [2021-06-05 22:22:46,632 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:46,632 INFO L276 IsEmpty]: Start isEmpty. Operand 5690 states and 19824 transitions. [2021-06-05 22:22:46,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:22:46,640 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:22:46,640 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:22:46,640 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-06-05 22:22:46,641 INFO L430 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:22:46,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:22:46,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1178784778, now seen corresponding path program 87 times [2021-06-05 22:22:46,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:22:46,641 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812959982] [2021-06-05 22:22:46,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:22:46,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:22:46,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:22:46,820 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:22:46,820 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812959982] [2021-06-05 22:22:46,820 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812959982] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:22:46,820 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:22:46,820 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:22:46,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141167963] [2021-06-05 22:22:46,820 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:22:46,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:22:46,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:22:46,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:22:46,820 INFO L87 Difference]: Start difference. First operand 5690 states and 19824 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:48,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:22:48,651 INFO L93 Difference]: Finished difference Result 8085 states and 28237 transitions. [2021-06-05 22:22:48,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-06-05 22:22:48,652 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:22:48,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:22:48,665 INFO L225 Difference]: With dead ends: 8085 [2021-06-05 22:22:48,666 INFO L226 Difference]: Without dead ends: 7980 [2021-06-05 22:22:48,666 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1142 ImplicationChecksByTransitivity, 1015.6ms TimeCoverageRelationStatistics Valid=383, Invalid=3907, Unknown=0, NotChecked=0, Total=4290 [2021-06-05 22:22:48,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7980 states. [2021-06-05 22:22:48,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7980 to 5716. [2021-06-05 22:22:48,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5716 states, 5715 states have (on average 3.483639545056868) internal successors, (19909), 5715 states have internal predecessors, (19909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:48,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5716 states to 5716 states and 19909 transitions. [2021-06-05 22:22:48,763 INFO L78 Accepts]: Start accepts. Automaton has 5716 states and 19909 transitions. Word has length 47 [2021-06-05 22:22:48,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:22:48,763 INFO L482 AbstractCegarLoop]: Abstraction has 5716 states and 19909 transitions. [2021-06-05 22:22:48,763 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:48,763 INFO L276 IsEmpty]: Start isEmpty. Operand 5716 states and 19909 transitions. [2021-06-05 22:22:48,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:22:48,770 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:22:48,771 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:22:48,771 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-06-05 22:22:48,771 INFO L430 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:22:48,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:22:48,771 INFO L82 PathProgramCache]: Analyzing trace with hash 403667176, now seen corresponding path program 88 times [2021-06-05 22:22:48,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:22:48,771 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715525068] [2021-06-05 22:22:48,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:22:48,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:22:48,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:22:48,950 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:22:48,950 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715525068] [2021-06-05 22:22:48,950 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715525068] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:22:48,950 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:22:48,950 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:22:48,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506768806] [2021-06-05 22:22:48,951 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:22:48,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:22:48,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:22:48,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:22:48,951 INFO L87 Difference]: Start difference. First operand 5716 states and 19909 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:50,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:22:50,426 INFO L93 Difference]: Finished difference Result 7773 states and 27009 transitions. [2021-06-05 22:22:50,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 22:22:50,427 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:22:50,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:22:50,441 INFO L225 Difference]: With dead ends: 7773 [2021-06-05 22:22:50,441 INFO L226 Difference]: Without dead ends: 7678 [2021-06-05 22:22:50,442 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 796 ImplicationChecksByTransitivity, 857.3ms TimeCoverageRelationStatistics Valid=301, Invalid=3005, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 22:22:50,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7678 states. [2021-06-05 22:22:50,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7678 to 5708. [2021-06-05 22:22:50,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5708 states, 5707 states have (on average 3.485018398458034) internal successors, (19889), 5707 states have internal predecessors, (19889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:50,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5708 states to 5708 states and 19889 transitions. [2021-06-05 22:22:50,540 INFO L78 Accepts]: Start accepts. Automaton has 5708 states and 19889 transitions. Word has length 47 [2021-06-05 22:22:50,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:22:50,540 INFO L482 AbstractCegarLoop]: Abstraction has 5708 states and 19889 transitions. [2021-06-05 22:22:50,540 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:50,540 INFO L276 IsEmpty]: Start isEmpty. Operand 5708 states and 19889 transitions. [2021-06-05 22:22:50,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:22:50,548 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:22:50,548 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:22:50,548 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-06-05 22:22:50,548 INFO L430 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:22:50,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:22:50,548 INFO L82 PathProgramCache]: Analyzing trace with hash 702558854, now seen corresponding path program 89 times [2021-06-05 22:22:50,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:22:50,548 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154824140] [2021-06-05 22:22:50,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:22:50,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:22:50,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:22:50,729 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:22:50,730 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154824140] [2021-06-05 22:22:50,730 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154824140] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:22:50,730 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:22:50,730 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:22:50,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930540918] [2021-06-05 22:22:50,730 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:22:50,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:22:50,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:22:50,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:22:50,730 INFO L87 Difference]: Start difference. First operand 5708 states and 19889 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:51,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:22:51,735 INFO L93 Difference]: Finished difference Result 6958 states and 23989 transitions. [2021-06-05 22:22:51,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 22:22:51,735 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:22:51,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:22:51,747 INFO L225 Difference]: With dead ends: 6958 [2021-06-05 22:22:51,748 INFO L226 Difference]: Without dead ends: 6861 [2021-06-05 22:22:51,748 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 631.5ms TimeCoverageRelationStatistics Valid=211, Invalid=1951, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 22:22:51,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6861 states. [2021-06-05 22:22:51,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6861 to 5716. [2021-06-05 22:22:51,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5716 states, 5715 states have (on average 3.4832895888013997) internal successors, (19907), 5715 states have internal predecessors, (19907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:51,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5716 states to 5716 states and 19907 transitions. [2021-06-05 22:22:51,840 INFO L78 Accepts]: Start accepts. Automaton has 5716 states and 19907 transitions. Word has length 47 [2021-06-05 22:22:51,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:22:51,840 INFO L482 AbstractCegarLoop]: Abstraction has 5716 states and 19907 transitions. [2021-06-05 22:22:51,840 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:51,840 INFO L276 IsEmpty]: Start isEmpty. Operand 5716 states and 19907 transitions. [2021-06-05 22:22:51,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:22:51,848 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:22:51,848 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:22:51,848 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-06-05 22:22:51,848 INFO L430 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:22:51,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:22:51,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1022861656, now seen corresponding path program 90 times [2021-06-05 22:22:51,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:22:51,849 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052874811] [2021-06-05 22:22:51,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:22:51,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:22:52,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:22:52,029 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:22:52,029 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052874811] [2021-06-05 22:22:52,029 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052874811] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:22:52,029 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:22:52,029 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:22:52,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121555405] [2021-06-05 22:22:52,030 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:22:52,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:22:52,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:22:52,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:22:52,030 INFO L87 Difference]: Start difference. First operand 5716 states and 19907 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:52,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:22:52,991 INFO L93 Difference]: Finished difference Result 6934 states and 23899 transitions. [2021-06-05 22:22:52,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 22:22:52,992 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:22:52,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:22:53,004 INFO L225 Difference]: With dead ends: 6934 [2021-06-05 22:22:53,004 INFO L226 Difference]: Without dead ends: 6835 [2021-06-05 22:22:53,004 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 594.3ms TimeCoverageRelationStatistics Valid=192, Invalid=1788, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 22:22:53,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6835 states. [2021-06-05 22:22:53,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6835 to 5708. [2021-06-05 22:22:53,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5708 states, 5707 states have (on average 3.4846679516383388) internal successors, (19887), 5707 states have internal predecessors, (19887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:53,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5708 states to 5708 states and 19887 transitions. [2021-06-05 22:22:53,094 INFO L78 Accepts]: Start accepts. Automaton has 5708 states and 19887 transitions. Word has length 47 [2021-06-05 22:22:53,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:22:53,094 INFO L482 AbstractCegarLoop]: Abstraction has 5708 states and 19887 transitions. [2021-06-05 22:22:53,094 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:53,094 INFO L276 IsEmpty]: Start isEmpty. Operand 5708 states and 19887 transitions. [2021-06-05 22:22:53,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:22:53,101 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:22:53,102 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:22:53,102 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-06-05 22:22:53,102 INFO L430 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:22:53,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:22:53,102 INFO L82 PathProgramCache]: Analyzing trace with hash 52882908, now seen corresponding path program 91 times [2021-06-05 22:22:53,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:22:53,102 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575204577] [2021-06-05 22:22:53,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:22:53,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:22:53,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:22:53,284 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:22:53,284 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575204577] [2021-06-05 22:22:53,284 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575204577] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:22:53,284 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:22:53,284 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:22:53,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344435484] [2021-06-05 22:22:53,284 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:22:53,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:22:53,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:22:53,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:22:53,284 INFO L87 Difference]: Start difference. First operand 5708 states and 19887 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:54,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:22:54,298 INFO L93 Difference]: Finished difference Result 6809 states and 23600 transitions. [2021-06-05 22:22:54,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 22:22:54,298 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:22:54,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:22:54,309 INFO L225 Difference]: With dead ends: 6809 [2021-06-05 22:22:54,309 INFO L226 Difference]: Without dead ends: 6664 [2021-06-05 22:22:54,309 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 640.7ms TimeCoverageRelationStatistics Valid=201, Invalid=1869, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 22:22:54,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6664 states. [2021-06-05 22:22:54,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6664 to 5720. [2021-06-05 22:22:54,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5720 states, 5719 states have (on average 3.4826018534708867) internal successors, (19917), 5719 states have internal predecessors, (19917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:54,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5720 states to 5720 states and 19917 transitions. [2021-06-05 22:22:54,391 INFO L78 Accepts]: Start accepts. Automaton has 5720 states and 19917 transitions. Word has length 47 [2021-06-05 22:22:54,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:22:54,391 INFO L482 AbstractCegarLoop]: Abstraction has 5720 states and 19917 transitions. [2021-06-05 22:22:54,392 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:54,392 INFO L276 IsEmpty]: Start isEmpty. Operand 5720 states and 19917 transitions. [2021-06-05 22:22:54,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:22:54,398 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:22:54,398 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:22:54,398 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-06-05 22:22:54,399 INFO L430 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:22:54,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:22:54,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1890569798, now seen corresponding path program 92 times [2021-06-05 22:22:54,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:22:54,399 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926396536] [2021-06-05 22:22:54,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:22:54,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:22:54,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:22:54,574 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:22:54,574 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926396536] [2021-06-05 22:22:54,574 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926396536] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:22:54,574 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:22:54,574 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:22:54,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355955206] [2021-06-05 22:22:54,574 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:22:54,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:22:54,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:22:54,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:22:54,575 INFO L87 Difference]: Start difference. First operand 5720 states and 19917 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:55,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:22:55,604 INFO L93 Difference]: Finished difference Result 6809 states and 23523 transitions. [2021-06-05 22:22:55,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 22:22:55,605 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:22:55,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:22:55,616 INFO L225 Difference]: With dead ends: 6809 [2021-06-05 22:22:55,617 INFO L226 Difference]: Without dead ends: 6712 [2021-06-05 22:22:55,617 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 621.1ms TimeCoverageRelationStatistics Valid=186, Invalid=1706, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 22:22:55,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6712 states. [2021-06-05 22:22:55,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6712 to 5726. [2021-06-05 22:22:55,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5726 states, 5725 states have (on average 3.481572052401747) internal successors, (19932), 5725 states have internal predecessors, (19932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:55,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5726 states to 5726 states and 19932 transitions. [2021-06-05 22:22:55,706 INFO L78 Accepts]: Start accepts. Automaton has 5726 states and 19932 transitions. Word has length 47 [2021-06-05 22:22:55,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:22:55,706 INFO L482 AbstractCegarLoop]: Abstraction has 5726 states and 19932 transitions. [2021-06-05 22:22:55,706 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:55,706 INFO L276 IsEmpty]: Start isEmpty. Operand 5726 states and 19932 transitions. [2021-06-05 22:22:55,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:22:55,714 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:22:55,714 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:22:55,714 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-06-05 22:22:55,714 INFO L430 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:22:55,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:22:55,717 INFO L82 PathProgramCache]: Analyzing trace with hash 678976988, now seen corresponding path program 93 times [2021-06-05 22:22:55,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:22:55,718 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063458948] [2021-06-05 22:22:55,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:22:55,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:22:55,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:22:55,913 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:22:55,913 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063458948] [2021-06-05 22:22:55,913 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063458948] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:22:55,913 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:22:55,913 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:22:55,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757313937] [2021-06-05 22:22:55,913 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:22:55,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:22:55,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:22:55,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:22:55,914 INFO L87 Difference]: Start difference. First operand 5726 states and 19932 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:56,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:22:56,968 INFO L93 Difference]: Finished difference Result 6710 states and 23218 transitions. [2021-06-05 22:22:56,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 22:22:56,968 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:22:56,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:22:56,980 INFO L225 Difference]: With dead ends: 6710 [2021-06-05 22:22:56,980 INFO L226 Difference]: Without dead ends: 6581 [2021-06-05 22:22:56,980 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 656.9ms TimeCoverageRelationStatistics Valid=177, Invalid=1629, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 22:22:57,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6581 states. [2021-06-05 22:22:57,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6581 to 5688. [2021-06-05 22:22:57,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5688 states, 5687 states have (on average 3.489185862493406) internal successors, (19843), 5687 states have internal predecessors, (19843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:57,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5688 states to 5688 states and 19843 transitions. [2021-06-05 22:22:57,077 INFO L78 Accepts]: Start accepts. Automaton has 5688 states and 19843 transitions. Word has length 47 [2021-06-05 22:22:57,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:22:57,077 INFO L482 AbstractCegarLoop]: Abstraction has 5688 states and 19843 transitions. [2021-06-05 22:22:57,077 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:57,077 INFO L276 IsEmpty]: Start isEmpty. Operand 5688 states and 19843 transitions. [2021-06-05 22:22:57,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:22:57,085 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:22:57,085 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:22:57,085 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-06-05 22:22:57,085 INFO L430 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:22:57,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:22:57,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1784513204, now seen corresponding path program 94 times [2021-06-05 22:22:57,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:22:57,085 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057276297] [2021-06-05 22:22:57,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:22:57,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:22:57,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:22:57,298 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:22:57,298 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057276297] [2021-06-05 22:22:57,298 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057276297] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:22:57,298 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:22:57,298 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 22:22:57,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740220939] [2021-06-05 22:22:57,298 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 22:22:57,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:22:57,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 22:22:57,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2021-06-05 22:22:57,299 INFO L87 Difference]: Start difference. First operand 5688 states and 19843 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:58,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:22:58,092 INFO L93 Difference]: Finished difference Result 6627 states and 22989 transitions. [2021-06-05 22:22:58,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 22:22:58,093 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:22:58,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:22:58,103 INFO L225 Difference]: With dead ends: 6627 [2021-06-05 22:22:58,103 INFO L226 Difference]: Without dead ends: 6490 [2021-06-05 22:22:58,104 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 488.2ms TimeCoverageRelationStatistics Valid=145, Invalid=1187, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 22:22:58,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6490 states. [2021-06-05 22:22:58,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6490 to 5704. [2021-06-05 22:22:58,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5704 states, 5703 states have (on average 3.4878134315272664) internal successors, (19891), 5703 states have internal predecessors, (19891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:58,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5704 states to 5704 states and 19891 transitions. [2021-06-05 22:22:58,184 INFO L78 Accepts]: Start accepts. Automaton has 5704 states and 19891 transitions. Word has length 47 [2021-06-05 22:22:58,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:22:58,184 INFO L482 AbstractCegarLoop]: Abstraction has 5704 states and 19891 transitions. [2021-06-05 22:22:58,184 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:58,184 INFO L276 IsEmpty]: Start isEmpty. Operand 5704 states and 19891 transitions. [2021-06-05 22:22:58,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:22:58,191 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:22:58,191 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:22:58,191 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-06-05 22:22:58,191 INFO L430 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:22:58,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:22:58,191 INFO L82 PathProgramCache]: Analyzing trace with hash -266816982, now seen corresponding path program 95 times [2021-06-05 22:22:58,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:22:58,192 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781743113] [2021-06-05 22:22:58,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:22:58,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:22:58,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:22:58,372 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:22:58,372 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781743113] [2021-06-05 22:22:58,372 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781743113] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:22:58,372 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:22:58,372 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:22:58,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267611057] [2021-06-05 22:22:58,372 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:22:58,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:22:58,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:22:58,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:22:58,372 INFO L87 Difference]: Start difference. First operand 5704 states and 19891 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:59,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:22:59,257 INFO L93 Difference]: Finished difference Result 6686 states and 23148 transitions. [2021-06-05 22:22:59,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 22:22:59,261 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:22:59,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:22:59,272 INFO L225 Difference]: With dead ends: 6686 [2021-06-05 22:22:59,272 INFO L226 Difference]: Without dead ends: 6597 [2021-06-05 22:22:59,273 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 534.3ms TimeCoverageRelationStatistics Valid=161, Invalid=1399, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 22:22:59,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6597 states. [2021-06-05 22:22:59,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6597 to 5768. [2021-06-05 22:22:59,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5768 states, 5767 states have (on average 3.486561470435235) internal successors, (20107), 5767 states have internal predecessors, (20107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:59,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5768 states to 5768 states and 20107 transitions. [2021-06-05 22:22:59,353 INFO L78 Accepts]: Start accepts. Automaton has 5768 states and 20107 transitions. Word has length 47 [2021-06-05 22:22:59,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:22:59,353 INFO L482 AbstractCegarLoop]: Abstraction has 5768 states and 20107 transitions. [2021-06-05 22:22:59,353 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:22:59,353 INFO L276 IsEmpty]: Start isEmpty. Operand 5768 states and 20107 transitions. [2021-06-05 22:22:59,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:22:59,360 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:22:59,360 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:22:59,360 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-06-05 22:22:59,361 INFO L430 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:22:59,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:22:59,361 INFO L82 PathProgramCache]: Analyzing trace with hash 167212364, now seen corresponding path program 96 times [2021-06-05 22:22:59,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:22:59,361 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184169198] [2021-06-05 22:22:59,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:22:59,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:22:59,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:22:59,530 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:22:59,530 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184169198] [2021-06-05 22:22:59,530 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184169198] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:22:59,530 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:22:59,530 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:22:59,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60475863] [2021-06-05 22:22:59,530 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:22:59,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:22:59,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:22:59,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:22:59,530 INFO L87 Difference]: Start difference. First operand 5768 states and 20107 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:00,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:23:00,316 INFO L93 Difference]: Finished difference Result 6579 states and 22821 transitions. [2021-06-05 22:23:00,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 22:23:00,316 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:23:00,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:23:00,327 INFO L225 Difference]: With dead ends: 6579 [2021-06-05 22:23:00,327 INFO L226 Difference]: Without dead ends: 6450 [2021-06-05 22:23:00,327 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 475.1ms TimeCoverageRelationStatistics Valid=144, Invalid=1262, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 22:23:00,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6450 states. [2021-06-05 22:23:00,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6450 to 5768. [2021-06-05 22:23:00,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5768 states, 5767 states have (on average 3.4823998612796947) internal successors, (20083), 5767 states have internal predecessors, (20083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:00,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5768 states to 5768 states and 20083 transitions. [2021-06-05 22:23:00,409 INFO L78 Accepts]: Start accepts. Automaton has 5768 states and 20083 transitions. Word has length 47 [2021-06-05 22:23:00,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:23:00,409 INFO L482 AbstractCegarLoop]: Abstraction has 5768 states and 20083 transitions. [2021-06-05 22:23:00,409 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:00,409 INFO L276 IsEmpty]: Start isEmpty. Operand 5768 states and 20083 transitions. [2021-06-05 22:23:00,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:23:00,416 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:23:00,416 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:23:00,416 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-06-05 22:23:00,416 INFO L430 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:23:00,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:23:00,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1728645850, now seen corresponding path program 97 times [2021-06-05 22:23:00,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:23:00,417 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962379033] [2021-06-05 22:23:00,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:23:00,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:23:00,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:23:00,587 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:23:00,587 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962379033] [2021-06-05 22:23:00,587 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962379033] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:23:00,587 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:23:00,587 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:23:00,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633448684] [2021-06-05 22:23:00,587 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:23:00,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:23:00,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:23:00,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:23:00,588 INFO L87 Difference]: Start difference. First operand 5768 states and 20083 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:01,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:23:01,504 INFO L93 Difference]: Finished difference Result 6638 states and 22988 transitions. [2021-06-05 22:23:01,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 22:23:01,505 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:23:01,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:23:01,515 INFO L225 Difference]: With dead ends: 6638 [2021-06-05 22:23:01,516 INFO L226 Difference]: Without dead ends: 6549 [2021-06-05 22:23:01,516 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 568.5ms TimeCoverageRelationStatistics Valid=170, Invalid=1470, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 22:23:01,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6549 states. [2021-06-05 22:23:01,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6549 to 5768. [2021-06-05 22:23:01,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5768 states, 5767 states have (on average 3.4823998612796947) internal successors, (20083), 5767 states have internal predecessors, (20083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:01,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5768 states to 5768 states and 20083 transitions. [2021-06-05 22:23:01,594 INFO L78 Accepts]: Start accepts. Automaton has 5768 states and 20083 transitions. Word has length 47 [2021-06-05 22:23:01,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:23:01,594 INFO L482 AbstractCegarLoop]: Abstraction has 5768 states and 20083 transitions. [2021-06-05 22:23:01,594 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:01,594 INFO L276 IsEmpty]: Start isEmpty. Operand 5768 states and 20083 transitions. [2021-06-05 22:23:01,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:23:01,600 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:23:01,601 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:23:01,601 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-06-05 22:23:01,601 INFO L430 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:23:01,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:23:01,601 INFO L82 PathProgramCache]: Analyzing trace with hash -2132292100, now seen corresponding path program 98 times [2021-06-05 22:23:01,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:23:01,601 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265792590] [2021-06-05 22:23:01,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:23:01,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:23:01,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:23:01,760 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:23:01,760 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265792590] [2021-06-05 22:23:01,760 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265792590] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:23:01,760 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:23:01,760 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:23:01,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468798677] [2021-06-05 22:23:01,760 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:23:01,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:23:01,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:23:01,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:23:01,761 INFO L87 Difference]: Start difference. First operand 5768 states and 20083 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:02,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:23:02,580 INFO L93 Difference]: Finished difference Result 6630 states and 22960 transitions. [2021-06-05 22:23:02,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 22:23:02,580 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:23:02,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:23:02,591 INFO L225 Difference]: With dead ends: 6630 [2021-06-05 22:23:02,591 INFO L226 Difference]: Without dead ends: 6525 [2021-06-05 22:23:02,591 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 492.8ms TimeCoverageRelationStatistics Valid=156, Invalid=1326, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 22:23:02,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6525 states. [2021-06-05 22:23:02,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6525 to 5784. [2021-06-05 22:23:02,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5784 states, 5783 states have (on average 3.4810651910772954) internal successors, (20131), 5783 states have internal predecessors, (20131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:02,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5784 states to 5784 states and 20131 transitions. [2021-06-05 22:23:02,677 INFO L78 Accepts]: Start accepts. Automaton has 5784 states and 20131 transitions. Word has length 47 [2021-06-05 22:23:02,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:23:02,677 INFO L482 AbstractCegarLoop]: Abstraction has 5784 states and 20131 transitions. [2021-06-05 22:23:02,678 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:02,678 INFO L276 IsEmpty]: Start isEmpty. Operand 5784 states and 20131 transitions. [2021-06-05 22:23:02,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:23:02,685 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:23:02,685 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:23:02,686 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-06-05 22:23:02,686 INFO L430 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:23:02,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:23:02,686 INFO L82 PathProgramCache]: Analyzing trace with hash -859358392, now seen corresponding path program 99 times [2021-06-05 22:23:02,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:23:02,686 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494767121] [2021-06-05 22:23:02,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:23:02,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:23:02,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:23:02,852 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:23:02,852 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494767121] [2021-06-05 22:23:02,852 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494767121] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:23:02,852 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:23:02,852 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:23:02,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61596149] [2021-06-05 22:23:02,853 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:23:02,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:23:02,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:23:02,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:23:02,853 INFO L87 Difference]: Start difference. First operand 5784 states and 20131 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:03,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:23:03,688 INFO L93 Difference]: Finished difference Result 6643 states and 23013 transitions. [2021-06-05 22:23:03,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 22:23:03,688 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:23:03,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:23:03,699 INFO L225 Difference]: With dead ends: 6643 [2021-06-05 22:23:03,699 INFO L226 Difference]: Without dead ends: 6390 [2021-06-05 22:23:03,699 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 492.7ms TimeCoverageRelationStatistics Valid=153, Invalid=1329, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 22:23:03,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6390 states. [2021-06-05 22:23:03,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6390 to 5676. [2021-06-05 22:23:03,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5676 states, 5675 states have (on average 3.490925110132159) internal successors, (19811), 5675 states have internal predecessors, (19811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:03,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5676 states to 5676 states and 19811 transitions. [2021-06-05 22:23:03,845 INFO L78 Accepts]: Start accepts. Automaton has 5676 states and 19811 transitions. Word has length 47 [2021-06-05 22:23:03,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:23:03,845 INFO L482 AbstractCegarLoop]: Abstraction has 5676 states and 19811 transitions. [2021-06-05 22:23:03,845 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:03,845 INFO L276 IsEmpty]: Start isEmpty. Operand 5676 states and 19811 transitions. [2021-06-05 22:23:03,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:23:03,851 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:23:03,852 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:23:03,852 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-06-05 22:23:03,852 INFO L430 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:23:03,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:23:03,852 INFO L82 PathProgramCache]: Analyzing trace with hash -745645546, now seen corresponding path program 100 times [2021-06-05 22:23:03,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:23:03,852 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124294327] [2021-06-05 22:23:03,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:23:03,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:23:04,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:23:04,029 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:23:04,029 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124294327] [2021-06-05 22:23:04,029 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124294327] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:23:04,029 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:23:04,029 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 22:23:04,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360802373] [2021-06-05 22:23:04,029 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 22:23:04,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:23:04,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 22:23:04,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2021-06-05 22:23:04,029 INFO L87 Difference]: Start difference. First operand 5676 states and 19811 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:04,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:23:04,800 INFO L93 Difference]: Finished difference Result 6495 states and 22527 transitions. [2021-06-05 22:23:04,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 22:23:04,800 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:23:04,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:23:04,811 INFO L225 Difference]: With dead ends: 6495 [2021-06-05 22:23:04,811 INFO L226 Difference]: Without dead ends: 6358 [2021-06-05 22:23:04,811 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 461.3ms TimeCoverageRelationStatistics Valid=141, Invalid=1191, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 22:23:04,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6358 states. [2021-06-05 22:23:04,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6358 to 5732. [2021-06-05 22:23:04,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5732 states, 5731 states have (on average 3.486128075379515) internal successors, (19979), 5731 states have internal predecessors, (19979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:04,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5732 states to 5732 states and 19979 transitions. [2021-06-05 22:23:04,892 INFO L78 Accepts]: Start accepts. Automaton has 5732 states and 19979 transitions. Word has length 47 [2021-06-05 22:23:04,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:23:04,892 INFO L482 AbstractCegarLoop]: Abstraction has 5732 states and 19979 transitions. [2021-06-05 22:23:04,892 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:04,892 INFO L276 IsEmpty]: Start isEmpty. Operand 5732 states and 19979 transitions. [2021-06-05 22:23:04,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:23:04,899 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:23:04,899 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:23:04,899 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-06-05 22:23:04,899 INFO L430 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:23:04,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:23:04,899 INFO L82 PathProgramCache]: Analyzing trace with hash -28077546, now seen corresponding path program 101 times [2021-06-05 22:23:04,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:23:04,899 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640252802] [2021-06-05 22:23:04,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:23:04,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:23:05,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:23:05,058 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:23:05,058 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640252802] [2021-06-05 22:23:05,058 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640252802] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:23:05,059 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:23:05,059 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:23:05,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948845945] [2021-06-05 22:23:05,059 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:23:05,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:23:05,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:23:05,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:23:05,059 INFO L87 Difference]: Start difference. First operand 5732 states and 19979 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:05,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:23:05,947 INFO L93 Difference]: Finished difference Result 6554 states and 22686 transitions. [2021-06-05 22:23:05,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 22:23:05,947 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:23:05,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:23:05,958 INFO L225 Difference]: With dead ends: 6554 [2021-06-05 22:23:05,958 INFO L226 Difference]: Without dead ends: 6465 [2021-06-05 22:23:05,959 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 517.5ms TimeCoverageRelationStatistics Valid=157, Invalid=1403, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 22:23:05,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6465 states. [2021-06-05 22:23:06,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6465 to 5796. [2021-06-05 22:23:06,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5796 states, 5795 states have (on average 3.4849007765314925) internal successors, (20195), 5795 states have internal predecessors, (20195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:06,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5796 states to 5796 states and 20195 transitions. [2021-06-05 22:23:06,041 INFO L78 Accepts]: Start accepts. Automaton has 5796 states and 20195 transitions. Word has length 47 [2021-06-05 22:23:06,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:23:06,041 INFO L482 AbstractCegarLoop]: Abstraction has 5796 states and 20195 transitions. [2021-06-05 22:23:06,041 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:06,041 INFO L276 IsEmpty]: Start isEmpty. Operand 5796 states and 20195 transitions. [2021-06-05 22:23:06,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:23:06,048 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:23:06,049 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:23:06,049 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-06-05 22:23:06,049 INFO L430 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:23:06,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:23:06,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1712540232, now seen corresponding path program 102 times [2021-06-05 22:23:06,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:23:06,049 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795110959] [2021-06-05 22:23:06,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:23:06,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:23:06,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:23:06,212 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:23:06,212 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795110959] [2021-06-05 22:23:06,212 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795110959] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:23:06,212 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:23:06,212 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:23:06,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798984566] [2021-06-05 22:23:06,212 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:23:06,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:23:06,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:23:06,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:23:06,213 INFO L87 Difference]: Start difference. First operand 5796 states and 20195 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:07,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:23:07,050 INFO L93 Difference]: Finished difference Result 6447 states and 22359 transitions. [2021-06-05 22:23:07,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 22:23:07,050 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:23:07,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:23:07,061 INFO L225 Difference]: With dead ends: 6447 [2021-06-05 22:23:07,061 INFO L226 Difference]: Without dead ends: 6318 [2021-06-05 22:23:07,062 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 500.4ms TimeCoverageRelationStatistics Valid=140, Invalid=1266, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 22:23:07,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6318 states. [2021-06-05 22:23:07,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6318 to 5796. [2021-06-05 22:23:07,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5796 states, 5795 states have (on average 3.4807592752372734) internal successors, (20171), 5795 states have internal predecessors, (20171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:07,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5796 states to 5796 states and 20171 transitions. [2021-06-05 22:23:07,145 INFO L78 Accepts]: Start accepts. Automaton has 5796 states and 20171 transitions. Word has length 47 [2021-06-05 22:23:07,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:23:07,145 INFO L482 AbstractCegarLoop]: Abstraction has 5796 states and 20171 transitions. [2021-06-05 22:23:07,145 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:07,145 INFO L276 IsEmpty]: Start isEmpty. Operand 5796 states and 20171 transitions. [2021-06-05 22:23:07,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:23:07,152 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:23:07,152 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:23:07,152 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-06-05 22:23:07,152 INFO L430 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:23:07,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:23:07,152 INFO L82 PathProgramCache]: Analyzing trace with hash 331600184, now seen corresponding path program 103 times [2021-06-05 22:23:07,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:23:07,152 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645248391] [2021-06-05 22:23:07,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:23:07,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:23:07,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:23:07,311 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:23:07,311 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645248391] [2021-06-05 22:23:07,311 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645248391] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:23:07,311 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:23:07,311 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:23:07,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198783474] [2021-06-05 22:23:07,311 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:23:07,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:23:07,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:23:07,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:23:07,312 INFO L87 Difference]: Start difference. First operand 5796 states and 20171 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:08,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:23:08,207 INFO L93 Difference]: Finished difference Result 6506 states and 22526 transitions. [2021-06-05 22:23:08,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 22:23:08,208 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:23:08,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:23:08,219 INFO L225 Difference]: With dead ends: 6506 [2021-06-05 22:23:08,219 INFO L226 Difference]: Without dead ends: 6417 [2021-06-05 22:23:08,220 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 540.8ms TimeCoverageRelationStatistics Valid=162, Invalid=1478, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 22:23:08,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6417 states. [2021-06-05 22:23:08,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6417 to 5796. [2021-06-05 22:23:08,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5796 states, 5795 states have (on average 3.4807592752372734) internal successors, (20171), 5795 states have internal predecessors, (20171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:08,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5796 states to 5796 states and 20171 transitions. [2021-06-05 22:23:08,314 INFO L78 Accepts]: Start accepts. Automaton has 5796 states and 20171 transitions. Word has length 47 [2021-06-05 22:23:08,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:23:08,314 INFO L482 AbstractCegarLoop]: Abstraction has 5796 states and 20171 transitions. [2021-06-05 22:23:08,314 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:08,314 INFO L276 IsEmpty]: Start isEmpty. Operand 5796 states and 20171 transitions. [2021-06-05 22:23:08,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:23:08,322 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:23:08,322 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:23:08,322 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-06-05 22:23:08,322 INFO L430 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:23:08,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:23:08,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1352862502, now seen corresponding path program 104 times [2021-06-05 22:23:08,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:23:08,323 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607769435] [2021-06-05 22:23:08,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:23:08,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:23:08,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:23:08,491 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:23:08,491 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607769435] [2021-06-05 22:23:08,491 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607769435] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:23:08,491 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:23:08,492 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:23:08,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251294756] [2021-06-05 22:23:08,492 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:23:08,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:23:08,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:23:08,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:23:08,492 INFO L87 Difference]: Start difference. First operand 5796 states and 20171 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:09,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:23:09,318 INFO L93 Difference]: Finished difference Result 6498 states and 22498 transitions. [2021-06-05 22:23:09,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 22:23:09,318 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:23:09,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:23:09,330 INFO L225 Difference]: With dead ends: 6498 [2021-06-05 22:23:09,330 INFO L226 Difference]: Without dead ends: 6393 [2021-06-05 22:23:09,331 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 522.5ms TimeCoverageRelationStatistics Valid=148, Invalid=1334, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 22:23:09,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6393 states. [2021-06-05 22:23:09,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6393 to 5812. [2021-06-05 22:23:09,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5812 states, 5811 states have (on average 3.4794355532610566) internal successors, (20219), 5811 states have internal predecessors, (20219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:09,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5812 states to 5812 states and 20219 transitions. [2021-06-05 22:23:09,426 INFO L78 Accepts]: Start accepts. Automaton has 5812 states and 20219 transitions. Word has length 47 [2021-06-05 22:23:09,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:23:09,426 INFO L482 AbstractCegarLoop]: Abstraction has 5812 states and 20219 transitions. [2021-06-05 22:23:09,426 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:09,426 INFO L276 IsEmpty]: Start isEmpty. Operand 5812 states and 20219 transitions. [2021-06-05 22:23:09,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:23:09,435 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:23:09,435 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:23:09,435 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-06-05 22:23:09,435 INFO L430 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:23:09,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:23:09,435 INFO L82 PathProgramCache]: Analyzing trace with hash -24165082, now seen corresponding path program 105 times [2021-06-05 22:23:09,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:23:09,435 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391179573] [2021-06-05 22:23:09,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:23:09,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:23:09,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:23:09,601 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:23:09,601 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391179573] [2021-06-05 22:23:09,601 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391179573] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:23:09,601 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:23:09,601 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:23:09,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277252727] [2021-06-05 22:23:09,601 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:23:09,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:23:09,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:23:09,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:23:09,602 INFO L87 Difference]: Start difference. First operand 5812 states and 20219 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:10,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:23:10,367 INFO L93 Difference]: Finished difference Result 6391 states and 22171 transitions. [2021-06-05 22:23:10,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 22:23:10,368 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:23:10,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:23:10,379 INFO L225 Difference]: With dead ends: 6391 [2021-06-05 22:23:10,379 INFO L226 Difference]: Without dead ends: 6118 [2021-06-05 22:23:10,379 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 464.0ms TimeCoverageRelationStatistics Valid=136, Invalid=1196, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 22:23:10,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6118 states. [2021-06-05 22:23:10,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6118 to 5684. [2021-06-05 22:23:10,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5684 states, 5683 states have (on average 3.4888263241245823) internal successors, (19827), 5683 states have internal predecessors, (19827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:10,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5684 states to 5684 states and 19827 transitions. [2021-06-05 22:23:10,475 INFO L78 Accepts]: Start accepts. Automaton has 5684 states and 19827 transitions. Word has length 47 [2021-06-05 22:23:10,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:23:10,475 INFO L482 AbstractCegarLoop]: Abstraction has 5684 states and 19827 transitions. [2021-06-05 22:23:10,475 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:10,475 INFO L276 IsEmpty]: Start isEmpty. Operand 5684 states and 19827 transitions. [2021-06-05 22:23:10,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:23:10,483 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:23:10,483 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:23:10,483 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-06-05 22:23:10,483 INFO L430 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:23:10,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:23:10,483 INFO L82 PathProgramCache]: Analyzing trace with hash -828074004, now seen corresponding path program 106 times [2021-06-05 22:23:10,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:23:10,483 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091573569] [2021-06-05 22:23:10,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:23:10,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:23:10,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:23:10,635 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:23:10,635 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091573569] [2021-06-05 22:23:10,635 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091573569] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:23:10,635 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:23:10,635 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 22:23:10,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702576066] [2021-06-05 22:23:10,635 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 22:23:10,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:23:10,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 22:23:10,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2021-06-05 22:23:10,635 INFO L87 Difference]: Start difference. First operand 5684 states and 19827 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:11,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:23:11,486 INFO L93 Difference]: Finished difference Result 6651 states and 23069 transitions. [2021-06-05 22:23:11,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 22:23:11,486 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:23:11,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:23:11,522 INFO L225 Difference]: With dead ends: 6651 [2021-06-05 22:23:11,522 INFO L226 Difference]: Without dead ends: 6514 [2021-06-05 22:23:11,523 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 511.2ms TimeCoverageRelationStatistics Valid=157, Invalid=1325, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 22:23:11,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6514 states. [2021-06-05 22:23:11,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6514 to 5704. [2021-06-05 22:23:11,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5704 states, 5703 states have (on average 3.488164124145187) internal successors, (19893), 5703 states have internal predecessors, (19893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:11,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5704 states to 5704 states and 19893 transitions. [2021-06-05 22:23:11,604 INFO L78 Accepts]: Start accepts. Automaton has 5704 states and 19893 transitions. Word has length 47 [2021-06-05 22:23:11,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:23:11,604 INFO L482 AbstractCegarLoop]: Abstraction has 5704 states and 19893 transitions. [2021-06-05 22:23:11,604 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:11,605 INFO L276 IsEmpty]: Start isEmpty. Operand 5704 states and 19893 transitions. [2021-06-05 22:23:11,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:23:11,612 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:23:11,612 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:23:11,612 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-06-05 22:23:11,612 INFO L430 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:23:11,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:23:11,613 INFO L82 PathProgramCache]: Analyzing trace with hash 689622218, now seen corresponding path program 107 times [2021-06-05 22:23:11,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:23:11,613 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144937435] [2021-06-05 22:23:11,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:23:11,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:23:11,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:23:11,775 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:23:11,775 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144937435] [2021-06-05 22:23:11,775 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144937435] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:23:11,775 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:23:11,775 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:23:11,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431097564] [2021-06-05 22:23:11,775 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:23:11,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:23:11,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:23:11,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:23:11,776 INFO L87 Difference]: Start difference. First operand 5704 states and 19893 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:12,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:23:12,727 INFO L93 Difference]: Finished difference Result 6710 states and 23228 transitions. [2021-06-05 22:23:12,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 22:23:12,727 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:23:12,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:23:12,739 INFO L225 Difference]: With dead ends: 6710 [2021-06-05 22:23:12,739 INFO L226 Difference]: Without dead ends: 6621 [2021-06-05 22:23:12,739 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 553.1ms TimeCoverageRelationStatistics Valid=175, Invalid=1547, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 22:23:12,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6621 states. [2021-06-05 22:23:12,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6621 to 5768. [2021-06-05 22:23:12,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5768 states, 5767 states have (on average 3.4869082711981965) internal successors, (20109), 5767 states have internal predecessors, (20109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:12,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5768 states to 5768 states and 20109 transitions. [2021-06-05 22:23:12,832 INFO L78 Accepts]: Start accepts. Automaton has 5768 states and 20109 transitions. Word has length 47 [2021-06-05 22:23:12,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:23:12,832 INFO L482 AbstractCegarLoop]: Abstraction has 5768 states and 20109 transitions. [2021-06-05 22:23:12,832 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:12,832 INFO L276 IsEmpty]: Start isEmpty. Operand 5768 states and 20109 transitions. [2021-06-05 22:23:12,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:23:12,840 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:23:12,840 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:23:12,840 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-06-05 22:23:12,840 INFO L430 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:23:12,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:23:12,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1123651564, now seen corresponding path program 108 times [2021-06-05 22:23:12,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:23:12,840 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070271719] [2021-06-05 22:23:12,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:23:12,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:23:13,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:23:13,010 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:23:13,010 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070271719] [2021-06-05 22:23:13,010 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070271719] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:23:13,010 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:23:13,011 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:23:13,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776939235] [2021-06-05 22:23:13,011 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:23:13,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:23:13,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:23:13,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:23:13,011 INFO L87 Difference]: Start difference. First operand 5768 states and 20109 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:13,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:23:13,880 INFO L93 Difference]: Finished difference Result 6603 states and 22901 transitions. [2021-06-05 22:23:13,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 22:23:13,880 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:23:13,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:23:13,892 INFO L225 Difference]: With dead ends: 6603 [2021-06-05 22:23:13,893 INFO L226 Difference]: Without dead ends: 6474 [2021-06-05 22:23:13,893 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 512.4ms TimeCoverageRelationStatistics Valid=158, Invalid=1402, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 22:23:13,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6474 states. [2021-06-05 22:23:13,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6474 to 5768. [2021-06-05 22:23:14,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5768 states, 5767 states have (on average 3.4827466620426564) internal successors, (20085), 5767 states have internal predecessors, (20085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:14,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5768 states to 5768 states and 20085 transitions. [2021-06-05 22:23:14,016 INFO L78 Accepts]: Start accepts. Automaton has 5768 states and 20085 transitions. Word has length 47 [2021-06-05 22:23:14,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:23:14,016 INFO L482 AbstractCegarLoop]: Abstraction has 5768 states and 20085 transitions. [2021-06-05 22:23:14,016 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:14,016 INFO L276 IsEmpty]: Start isEmpty. Operand 5768 states and 20085 transitions. [2021-06-05 22:23:14,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:23:14,024 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:23:14,024 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:23:14,024 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-06-05 22:23:14,024 INFO L430 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:23:14,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:23:14,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1609882246, now seen corresponding path program 109 times [2021-06-05 22:23:14,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:23:14,025 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731841092] [2021-06-05 22:23:14,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:23:14,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:23:14,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:23:14,200 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:23:14,200 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731841092] [2021-06-05 22:23:14,200 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731841092] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:23:14,200 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:23:14,200 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:23:14,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504850256] [2021-06-05 22:23:14,200 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:23:14,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:23:14,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:23:14,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:23:14,201 INFO L87 Difference]: Start difference. First operand 5768 states and 20085 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:15,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:23:15,164 INFO L93 Difference]: Finished difference Result 6758 states and 23404 transitions. [2021-06-05 22:23:15,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 22:23:15,165 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:23:15,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:23:15,177 INFO L225 Difference]: With dead ends: 6758 [2021-06-05 22:23:15,177 INFO L226 Difference]: Without dead ends: 6669 [2021-06-05 22:23:15,177 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 591.1ms TimeCoverageRelationStatistics Valid=189, Invalid=1703, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 22:23:15,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6669 states. [2021-06-05 22:23:15,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6669 to 5768. [2021-06-05 22:23:15,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5768 states, 5767 states have (on average 3.4827466620426564) internal successors, (20085), 5767 states have internal predecessors, (20085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:15,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5768 states to 5768 states and 20085 transitions. [2021-06-05 22:23:15,271 INFO L78 Accepts]: Start accepts. Automaton has 5768 states and 20085 transitions. Word has length 47 [2021-06-05 22:23:15,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:23:15,271 INFO L482 AbstractCegarLoop]: Abstraction has 5768 states and 20085 transitions. [2021-06-05 22:23:15,271 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:15,272 INFO L276 IsEmpty]: Start isEmpty. Operand 5768 states and 20085 transitions. [2021-06-05 22:23:15,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:23:15,279 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:23:15,279 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:23:15,279 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-06-05 22:23:15,279 INFO L430 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:23:15,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:23:15,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1175852900, now seen corresponding path program 110 times [2021-06-05 22:23:15,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:23:15,280 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243342305] [2021-06-05 22:23:15,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:23:15,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:23:15,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:23:15,448 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:23:15,448 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243342305] [2021-06-05 22:23:15,448 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243342305] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:23:15,448 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:23:15,448 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:23:15,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279208960] [2021-06-05 22:23:15,448 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:23:15,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:23:15,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:23:15,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:23:15,449 INFO L87 Difference]: Start difference. First operand 5768 states and 20085 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:16,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:23:16,317 INFO L93 Difference]: Finished difference Result 6750 states and 23376 transitions. [2021-06-05 22:23:16,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 22:23:16,317 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:23:16,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:23:16,329 INFO L225 Difference]: With dead ends: 6750 [2021-06-05 22:23:16,329 INFO L226 Difference]: Without dead ends: 6645 [2021-06-05 22:23:16,330 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 537.8ms TimeCoverageRelationStatistics Valid=175, Invalid=1547, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 22:23:16,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6645 states. [2021-06-05 22:23:16,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6645 to 5784. [2021-06-05 22:23:16,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5784 states, 5783 states have (on average 3.481411032336158) internal successors, (20133), 5783 states have internal predecessors, (20133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:16,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5784 states to 5784 states and 20133 transitions. [2021-06-05 22:23:16,423 INFO L78 Accepts]: Start accepts. Automaton has 5784 states and 20133 transitions. Word has length 47 [2021-06-05 22:23:16,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:23:16,423 INFO L482 AbstractCegarLoop]: Abstraction has 5784 states and 20133 transitions. [2021-06-05 22:23:16,423 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:16,423 INFO L276 IsEmpty]: Start isEmpty. Operand 5784 states and 20133 transitions. [2021-06-05 22:23:16,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:23:16,431 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:23:16,432 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:23:16,432 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-06-05 22:23:16,432 INFO L430 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:23:16,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:23:16,432 INFO L82 PathProgramCache]: Analyzing trace with hash 97080808, now seen corresponding path program 111 times [2021-06-05 22:23:16,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:23:16,432 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808597961] [2021-06-05 22:23:16,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:23:16,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:23:16,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:23:16,627 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:23:16,627 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808597961] [2021-06-05 22:23:16,627 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808597961] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:23:16,627 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:23:16,627 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:23:16,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102763811] [2021-06-05 22:23:16,627 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:23:16,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:23:16,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:23:16,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:23:16,627 INFO L87 Difference]: Start difference. First operand 5784 states and 20133 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:17,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:23:17,544 INFO L93 Difference]: Finished difference Result 6659 states and 23097 transitions. [2021-06-05 22:23:17,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 22:23:17,544 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:23:17,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:23:17,556 INFO L225 Difference]: With dead ends: 6659 [2021-06-05 22:23:17,556 INFO L226 Difference]: Without dead ends: 6434 [2021-06-05 22:23:17,557 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 540.1ms TimeCoverageRelationStatistics Valid=177, Invalid=1629, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 22:23:17,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6434 states. [2021-06-05 22:23:17,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6434 to 5704. [2021-06-05 22:23:17,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5704 states, 5703 states have (on average 3.4853585832018235) internal successors, (19877), 5703 states have internal predecessors, (19877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:17,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5704 states to 5704 states and 19877 transitions. [2021-06-05 22:23:17,649 INFO L78 Accepts]: Start accepts. Automaton has 5704 states and 19877 transitions. Word has length 47 [2021-06-05 22:23:17,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:23:17,649 INFO L482 AbstractCegarLoop]: Abstraction has 5704 states and 19877 transitions. [2021-06-05 22:23:17,649 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:17,649 INFO L276 IsEmpty]: Start isEmpty. Operand 5704 states and 19877 transitions. [2021-06-05 22:23:17,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:23:17,657 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:23:17,657 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:23:17,657 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-06-05 22:23:17,657 INFO L430 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:23:17,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:23:17,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1346136084, now seen corresponding path program 112 times [2021-06-05 22:23:17,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:23:17,657 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203941202] [2021-06-05 22:23:17,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:23:17,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:23:17,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:23:17,825 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:23:17,826 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203941202] [2021-06-05 22:23:17,826 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203941202] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:23:17,826 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:23:17,826 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:23:17,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372753369] [2021-06-05 22:23:17,826 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:23:17,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:23:17,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:23:17,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:23:17,826 INFO L87 Difference]: Start difference. First operand 5704 states and 19877 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:18,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:23:18,761 INFO L93 Difference]: Finished difference Result 6699 states and 23157 transitions. [2021-06-05 22:23:18,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 22:23:18,761 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:23:18,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:23:18,772 INFO L225 Difference]: With dead ends: 6699 [2021-06-05 22:23:18,772 INFO L226 Difference]: Without dead ends: 6562 [2021-06-05 22:23:18,773 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 542.4ms TimeCoverageRelationStatistics Valid=168, Invalid=1472, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 22:23:18,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6562 states. [2021-06-05 22:23:18,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6562 to 5710. [2021-06-05 22:23:18,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5710 states, 5709 states have (on average 3.4853739709231037) internal successors, (19898), 5709 states have internal predecessors, (19898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:18,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5710 states to 5710 states and 19898 transitions. [2021-06-05 22:23:18,865 INFO L78 Accepts]: Start accepts. Automaton has 5710 states and 19898 transitions. Word has length 47 [2021-06-05 22:23:18,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:23:18,865 INFO L482 AbstractCegarLoop]: Abstraction has 5710 states and 19898 transitions. [2021-06-05 22:23:18,865 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:18,865 INFO L276 IsEmpty]: Start isEmpty. Operand 5710 states and 19898 transitions. [2021-06-05 22:23:18,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:23:18,873 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:23:18,873 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:23:18,873 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-06-05 22:23:18,873 INFO L430 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:23:18,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:23:18,873 INFO L82 PathProgramCache]: Analyzing trace with hash 171560138, now seen corresponding path program 113 times [2021-06-05 22:23:18,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:23:18,873 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568712664] [2021-06-05 22:23:18,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:23:18,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:23:19,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:23:19,097 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:23:19,097 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568712664] [2021-06-05 22:23:19,097 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568712664] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:23:19,097 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:23:19,097 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:23:19,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999596937] [2021-06-05 22:23:19,097 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:23:19,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:23:19,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:23:19,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:23:19,098 INFO L87 Difference]: Start difference. First operand 5710 states and 19898 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:20,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:23:20,158 INFO L93 Difference]: Finished difference Result 6849 states and 23579 transitions. [2021-06-05 22:23:20,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 22:23:20,158 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:23:20,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:23:20,170 INFO L225 Difference]: With dead ends: 6849 [2021-06-05 22:23:20,170 INFO L226 Difference]: Without dead ends: 6760 [2021-06-05 22:23:20,171 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 651.2ms TimeCoverageRelationStatistics Valid=196, Invalid=1784, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 22:23:20,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6760 states. [2021-06-05 22:23:20,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6760 to 5710. [2021-06-05 22:23:20,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5710 states, 5709 states have (on average 3.4853739709231037) internal successors, (19898), 5709 states have internal predecessors, (19898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:20,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5710 states to 5710 states and 19898 transitions. [2021-06-05 22:23:20,262 INFO L78 Accepts]: Start accepts. Automaton has 5710 states and 19898 transitions. Word has length 47 [2021-06-05 22:23:20,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:23:20,262 INFO L482 AbstractCegarLoop]: Abstraction has 5710 states and 19898 transitions. [2021-06-05 22:23:20,263 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:20,263 INFO L276 IsEmpty]: Start isEmpty. Operand 5710 states and 19898 transitions. [2021-06-05 22:23:20,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:23:20,270 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:23:20,270 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:23:20,270 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-06-05 22:23:20,270 INFO L430 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:23:20,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:23:20,271 INFO L82 PathProgramCache]: Analyzing trace with hash 605589484, now seen corresponding path program 114 times [2021-06-05 22:23:20,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:23:20,271 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729959909] [2021-06-05 22:23:20,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:23:20,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:23:20,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:23:20,470 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:23:20,470 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729959909] [2021-06-05 22:23:20,470 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729959909] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:23:20,470 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:23:20,470 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:23:20,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210906703] [2021-06-05 22:23:20,470 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:23:20,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:23:20,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:23:20,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:23:20,471 INFO L87 Difference]: Start difference. First operand 5710 states and 19898 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:21,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:23:21,424 INFO L93 Difference]: Finished difference Result 6742 states and 23252 transitions. [2021-06-05 22:23:21,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 22:23:21,424 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:23:21,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:23:21,437 INFO L225 Difference]: With dead ends: 6742 [2021-06-05 22:23:21,437 INFO L226 Difference]: Without dead ends: 6613 [2021-06-05 22:23:21,437 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 581.2ms TimeCoverageRelationStatistics Valid=176, Invalid=1630, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 22:23:21,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6613 states. [2021-06-05 22:23:21,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6613 to 5710. [2021-06-05 22:23:21,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5710 states, 5709 states have (on average 3.484322998773866) internal successors, (19892), 5709 states have internal predecessors, (19892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:21,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5710 states to 5710 states and 19892 transitions. [2021-06-05 22:23:21,533 INFO L78 Accepts]: Start accepts. Automaton has 5710 states and 19892 transitions. Word has length 47 [2021-06-05 22:23:21,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:23:21,533 INFO L482 AbstractCegarLoop]: Abstraction has 5710 states and 19892 transitions. [2021-06-05 22:23:21,533 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:21,533 INFO L276 IsEmpty]: Start isEmpty. Operand 5710 states and 19892 transitions. [2021-06-05 22:23:21,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:23:21,541 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:23:21,541 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:23:21,541 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-06-05 22:23:21,541 INFO L430 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:23:21,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:23:21,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1179950966, now seen corresponding path program 115 times [2021-06-05 22:23:21,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:23:21,541 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836907277] [2021-06-05 22:23:21,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:23:21,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:23:21,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:23:21,767 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:23:21,767 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836907277] [2021-06-05 22:23:21,767 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836907277] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:23:21,767 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:23:21,767 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:23:21,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610087776] [2021-06-05 22:23:21,768 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:23:21,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:23:21,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:23:21,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:23:21,768 INFO L87 Difference]: Start difference. First operand 5710 states and 19892 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:23,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:23:23,679 INFO L93 Difference]: Finished difference Result 8507 states and 29627 transitions. [2021-06-05 22:23:23,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 22:23:23,680 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:23:23,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:23:23,693 INFO L225 Difference]: With dead ends: 8507 [2021-06-05 22:23:23,694 INFO L226 Difference]: Without dead ends: 8370 [2021-06-05 22:23:23,694 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 831 ImplicationChecksByTransitivity, 1036.2ms TimeCoverageRelationStatistics Valid=324, Invalid=2982, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 22:23:23,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8370 states. [2021-06-05 22:23:23,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8370 to 5756. [2021-06-05 22:23:23,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5756 states, 5755 states have (on average 3.4799304952215464) internal successors, (20027), 5755 states have internal predecessors, (20027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:23,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5756 states to 5756 states and 20027 transitions. [2021-06-05 22:23:23,783 INFO L78 Accepts]: Start accepts. Automaton has 5756 states and 20027 transitions. Word has length 47 [2021-06-05 22:23:23,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:23:23,783 INFO L482 AbstractCegarLoop]: Abstraction has 5756 states and 20027 transitions. [2021-06-05 22:23:23,783 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:23,783 INFO L276 IsEmpty]: Start isEmpty. Operand 5756 states and 20027 transitions. [2021-06-05 22:23:23,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:23:23,789 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:23:23,789 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:23:23,789 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-06-05 22:23:23,789 INFO L430 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:23:23,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:23:23,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1193482388, now seen corresponding path program 116 times [2021-06-05 22:23:23,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:23:23,790 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220288807] [2021-06-05 22:23:23,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:23:23,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:23:23,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:23:23,982 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:23:23,982 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220288807] [2021-06-05 22:23:23,982 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220288807] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:23:23,983 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:23:23,983 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:23:23,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863670505] [2021-06-05 22:23:23,983 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:23:23,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:23:23,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:23:23,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:23:23,983 INFO L87 Difference]: Start difference. First operand 5756 states and 20027 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:26,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:23:26,136 INFO L93 Difference]: Finished difference Result 9839 states and 34481 transitions. [2021-06-05 22:23:26,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 22:23:26,136 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:23:26,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:23:26,154 INFO L225 Difference]: With dead ends: 9839 [2021-06-05 22:23:26,154 INFO L226 Difference]: Without dead ends: 9750 [2021-06-05 22:23:26,155 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1049 ImplicationChecksByTransitivity, 1199.1ms TimeCoverageRelationStatistics Valid=396, Invalid=3636, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 22:23:26,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9750 states. [2021-06-05 22:23:26,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9750 to 5760. [2021-06-05 22:23:26,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5760 states, 5759 states have (on average 3.4789025872547317) internal successors, (20035), 5759 states have internal predecessors, (20035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:26,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5760 states to 5760 states and 20035 transitions. [2021-06-05 22:23:26,271 INFO L78 Accepts]: Start accepts. Automaton has 5760 states and 20035 transitions. Word has length 47 [2021-06-05 22:23:26,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:23:26,271 INFO L482 AbstractCegarLoop]: Abstraction has 5760 states and 20035 transitions. [2021-06-05 22:23:26,271 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:26,271 INFO L276 IsEmpty]: Start isEmpty. Operand 5760 states and 20035 transitions. [2021-06-05 22:23:26,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:23:26,279 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:23:26,279 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:23:26,279 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-06-05 22:23:26,279 INFO L430 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:23:26,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:23:26,280 INFO L82 PathProgramCache]: Analyzing trace with hash -2044134296, now seen corresponding path program 117 times [2021-06-05 22:23:26,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:23:26,280 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309593429] [2021-06-05 22:23:26,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:23:26,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:23:26,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:23:26,473 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:23:26,473 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309593429] [2021-06-05 22:23:26,473 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309593429] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:23:26,473 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:23:26,473 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:23:26,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874778819] [2021-06-05 22:23:26,473 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:23:26,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:23:26,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:23:26,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:23:26,474 INFO L87 Difference]: Start difference. First operand 5760 states and 20035 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:28,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:23:28,841 INFO L93 Difference]: Finished difference Result 10426 states and 36871 transitions. [2021-06-05 22:23:28,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-06-05 22:23:28,841 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:23:28,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:23:28,860 INFO L225 Difference]: With dead ends: 10426 [2021-06-05 22:23:28,861 INFO L226 Difference]: Without dead ends: 10319 [2021-06-05 22:23:28,861 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1289 ImplicationChecksByTransitivity, 1267.4ms TimeCoverageRelationStatistics Valid=419, Invalid=4273, Unknown=0, NotChecked=0, Total=4692 [2021-06-05 22:23:28,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10319 states. [2021-06-05 22:23:28,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10319 to 5718. [2021-06-05 22:23:28,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5718 states, 5717 states have (on average 3.48259576701067) internal successors, (19910), 5717 states have internal predecessors, (19910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:28,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5718 states to 5718 states and 19910 transitions. [2021-06-05 22:23:28,982 INFO L78 Accepts]: Start accepts. Automaton has 5718 states and 19910 transitions. Word has length 47 [2021-06-05 22:23:28,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:23:28,982 INFO L482 AbstractCegarLoop]: Abstraction has 5718 states and 19910 transitions. [2021-06-05 22:23:28,982 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:28,982 INFO L276 IsEmpty]: Start isEmpty. Operand 5718 states and 19910 transitions. [2021-06-05 22:23:28,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:23:28,990 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:23:28,990 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:23:28,990 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-06-05 22:23:28,990 INFO L430 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:23:28,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:23:28,990 INFO L82 PathProgramCache]: Analyzing trace with hash -2143500436, now seen corresponding path program 118 times [2021-06-05 22:23:28,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:23:28,991 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163844723] [2021-06-05 22:23:28,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:23:28,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:23:29,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:23:29,221 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:23:29,221 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163844723] [2021-06-05 22:23:29,221 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163844723] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:23:29,221 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:23:29,221 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:23:29,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666328273] [2021-06-05 22:23:29,221 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:23:29,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:23:29,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:23:29,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:23:29,222 INFO L87 Difference]: Start difference. First operand 5718 states and 19910 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:30,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:23:30,378 INFO L93 Difference]: Finished difference Result 6910 states and 23771 transitions. [2021-06-05 22:23:30,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 22:23:30,379 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:23:30,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:23:30,391 INFO L225 Difference]: With dead ends: 6910 [2021-06-05 22:23:30,391 INFO L226 Difference]: Without dead ends: 6821 [2021-06-05 22:23:30,391 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 735.1ms TimeCoverageRelationStatistics Valid=211, Invalid=1951, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 22:23:30,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6821 states. [2021-06-05 22:23:30,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6821 to 5720. [2021-06-05 22:23:30,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5720 states, 5719 states have (on average 3.4826018534708867) internal successors, (19917), 5719 states have internal predecessors, (19917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:30,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5720 states to 5720 states and 19917 transitions. [2021-06-05 22:23:30,485 INFO L78 Accepts]: Start accepts. Automaton has 5720 states and 19917 transitions. Word has length 47 [2021-06-05 22:23:30,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:23:30,486 INFO L482 AbstractCegarLoop]: Abstraction has 5720 states and 19917 transitions. [2021-06-05 22:23:30,486 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:30,486 INFO L276 IsEmpty]: Start isEmpty. Operand 5720 states and 19917 transitions. [2021-06-05 22:23:30,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:23:30,494 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:23:30,494 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:23:30,494 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-06-05 22:23:30,494 INFO L430 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:23:30,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:23:30,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1827805036, now seen corresponding path program 119 times [2021-06-05 22:23:30,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:23:30,494 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359234415] [2021-06-05 22:23:30,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:23:30,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:23:30,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:23:30,674 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:23:30,674 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359234415] [2021-06-05 22:23:30,674 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359234415] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:23:30,674 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:23:30,674 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:23:30,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490420877] [2021-06-05 22:23:30,674 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:23:30,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:23:30,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:23:30,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:23:30,675 INFO L87 Difference]: Start difference. First operand 5720 states and 19917 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:31,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:23:31,654 INFO L93 Difference]: Finished difference Result 6902 states and 23743 transitions. [2021-06-05 22:23:31,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 22:23:31,654 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:23:31,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:23:31,667 INFO L225 Difference]: With dead ends: 6902 [2021-06-05 22:23:31,667 INFO L226 Difference]: Without dead ends: 6797 [2021-06-05 22:23:31,667 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 604.8ms TimeCoverageRelationStatistics Valid=190, Invalid=1790, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 22:23:31,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6797 states. [2021-06-05 22:23:31,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6797 to 5720. [2021-06-05 22:23:31,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5720 states, 5719 states have (on average 3.482252141982864) internal successors, (19915), 5719 states have internal predecessors, (19915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:31,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5720 states to 5720 states and 19915 transitions. [2021-06-05 22:23:31,763 INFO L78 Accepts]: Start accepts. Automaton has 5720 states and 19915 transitions. Word has length 47 [2021-06-05 22:23:31,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:23:31,763 INFO L482 AbstractCegarLoop]: Abstraction has 5720 states and 19915 transitions. [2021-06-05 22:23:31,763 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:31,763 INFO L276 IsEmpty]: Start isEmpty. Operand 5720 states and 19915 transitions. [2021-06-05 22:23:31,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:23:31,771 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:23:31,771 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:23:31,771 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-06-05 22:23:31,771 INFO L430 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:23:31,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:23:31,771 INFO L82 PathProgramCache]: Analyzing trace with hash 203038602, now seen corresponding path program 120 times [2021-06-05 22:23:31,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:23:31,771 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706152673] [2021-06-05 22:23:31,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:23:31,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:23:31,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:23:31,949 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:23:31,949 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706152673] [2021-06-05 22:23:31,949 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706152673] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:23:31,949 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:23:31,949 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:23:31,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469152138] [2021-06-05 22:23:31,949 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:23:31,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:23:31,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:23:31,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:23:31,950 INFO L87 Difference]: Start difference. First operand 5720 states and 19915 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:33,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:23:33,662 INFO L93 Difference]: Finished difference Result 8513 states and 29532 transitions. [2021-06-05 22:23:33,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 22:23:33,663 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:23:33,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:23:33,677 INFO L225 Difference]: With dead ends: 8513 [2021-06-05 22:23:33,678 INFO L226 Difference]: Without dead ends: 8424 [2021-06-05 22:23:33,678 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 833 ImplicationChecksByTransitivity, 943.6ms TimeCoverageRelationStatistics Valid=315, Invalid=3107, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 22:23:33,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8424 states. [2021-06-05 22:23:33,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8424 to 5824. [2021-06-05 22:23:33,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5824 states, 5823 states have (on average 3.477760604499399) internal successors, (20251), 5823 states have internal predecessors, (20251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:33,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5824 states to 5824 states and 20251 transitions. [2021-06-05 22:23:33,786 INFO L78 Accepts]: Start accepts. Automaton has 5824 states and 20251 transitions. Word has length 47 [2021-06-05 22:23:33,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:23:33,787 INFO L482 AbstractCegarLoop]: Abstraction has 5824 states and 20251 transitions. [2021-06-05 22:23:33,787 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:33,787 INFO L276 IsEmpty]: Start isEmpty. Operand 5824 states and 20251 transitions. [2021-06-05 22:23:33,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:23:33,795 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:23:33,795 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:23:33,795 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-06-05 22:23:33,795 INFO L430 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:23:33,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:23:33,795 INFO L82 PathProgramCache]: Analyzing trace with hash -572079000, now seen corresponding path program 121 times [2021-06-05 22:23:33,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:23:33,795 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837383567] [2021-06-05 22:23:33,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:23:33,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:23:33,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:23:33,975 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:23:33,975 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837383567] [2021-06-05 22:23:33,975 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837383567] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:23:33,975 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:23:33,975 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:23:33,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798085569] [2021-06-05 22:23:33,975 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:23:33,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:23:33,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:23:33,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:23:33,976 INFO L87 Difference]: Start difference. First operand 5824 states and 20251 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:35,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:23:35,290 INFO L93 Difference]: Finished difference Result 7385 states and 25458 transitions. [2021-06-05 22:23:35,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 22:23:35,290 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:23:35,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:23:35,304 INFO L225 Difference]: With dead ends: 7385 [2021-06-05 22:23:35,304 INFO L226 Difference]: Without dead ends: 7290 [2021-06-05 22:23:35,305 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 745.0ms TimeCoverageRelationStatistics Valid=231, Invalid=2219, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 22:23:35,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7290 states. [2021-06-05 22:23:35,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7290 to 5804. [2021-06-05 22:23:35,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5804 states, 5803 states have (on average 3.4821643977253145) internal successors, (20207), 5803 states have internal predecessors, (20207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:35,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5804 states to 5804 states and 20207 transitions. [2021-06-05 22:23:35,417 INFO L78 Accepts]: Start accepts. Automaton has 5804 states and 20207 transitions. Word has length 47 [2021-06-05 22:23:35,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:23:35,417 INFO L482 AbstractCegarLoop]: Abstraction has 5804 states and 20207 transitions. [2021-06-05 22:23:35,417 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:35,417 INFO L276 IsEmpty]: Start isEmpty. Operand 5804 states and 20207 transitions. [2021-06-05 22:23:35,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:23:35,425 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:23:35,425 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:23:35,425 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-06-05 22:23:35,425 INFO L430 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:23:35,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:23:35,426 INFO L82 PathProgramCache]: Analyzing trace with hash -273187322, now seen corresponding path program 122 times [2021-06-05 22:23:35,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:23:35,426 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015818775] [2021-06-05 22:23:35,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:23:35,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:23:35,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:23:35,638 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:23:35,638 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015818775] [2021-06-05 22:23:35,638 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015818775] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:23:35,638 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:23:35,638 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:23:35,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106001690] [2021-06-05 22:23:35,638 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:23:35,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:23:35,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:23:35,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:23:35,638 INFO L87 Difference]: Start difference. First operand 5804 states and 20207 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:36,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:23:36,580 INFO L93 Difference]: Finished difference Result 6867 states and 23666 transitions. [2021-06-05 22:23:36,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 22:23:36,580 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:23:36,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:23:36,593 INFO L225 Difference]: With dead ends: 6867 [2021-06-05 22:23:36,593 INFO L226 Difference]: Without dead ends: 6770 [2021-06-05 22:23:36,593 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 598.9ms TimeCoverageRelationStatistics Valid=170, Invalid=1636, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 22:23:36,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6770 states. [2021-06-05 22:23:36,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6770 to 5818. [2021-06-05 22:23:36,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5818 states, 5817 states have (on average 3.4784253051401066) internal successors, (20234), 5817 states have internal predecessors, (20234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:36,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5818 states to 5818 states and 20234 transitions. [2021-06-05 22:23:36,691 INFO L78 Accepts]: Start accepts. Automaton has 5818 states and 20234 transitions. Word has length 47 [2021-06-05 22:23:36,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:23:36,691 INFO L482 AbstractCegarLoop]: Abstraction has 5818 states and 20234 transitions. [2021-06-05 22:23:36,691 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:36,691 INFO L276 IsEmpty]: Start isEmpty. Operand 5818 states and 20234 transitions. [2021-06-05 22:23:36,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:23:36,699 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:23:36,699 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:23:36,699 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-06-05 22:23:36,699 INFO L430 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:23:36,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:23:36,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1998607832, now seen corresponding path program 123 times [2021-06-05 22:23:36,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:23:36,700 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281451788] [2021-06-05 22:23:36,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:23:36,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:23:36,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:23:36,898 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:23:36,898 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281451788] [2021-06-05 22:23:36,898 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281451788] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:23:36,898 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:23:36,898 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:23:36,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843006295] [2021-06-05 22:23:36,899 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:23:36,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:23:36,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:23:36,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:23:36,899 INFO L87 Difference]: Start difference. First operand 5818 states and 20234 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:37,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:23:37,840 INFO L93 Difference]: Finished difference Result 6843 states and 23576 transitions. [2021-06-05 22:23:37,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 22:23:37,840 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:23:37,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:23:37,853 INFO L225 Difference]: With dead ends: 6843 [2021-06-05 22:23:37,853 INFO L226 Difference]: Without dead ends: 6738 [2021-06-05 22:23:37,853 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 565.4ms TimeCoverageRelationStatistics Valid=170, Invalid=1636, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 22:23:37,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6738 states. [2021-06-05 22:23:37,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6738 to 5804. [2021-06-05 22:23:37,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5804 states, 5803 states have (on average 3.481130449767362) internal successors, (20201), 5803 states have internal predecessors, (20201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:37,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5804 states to 5804 states and 20201 transitions. [2021-06-05 22:23:37,956 INFO L78 Accepts]: Start accepts. Automaton has 5804 states and 20201 transitions. Word has length 47 [2021-06-05 22:23:37,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:23:37,956 INFO L482 AbstractCegarLoop]: Abstraction has 5804 states and 20201 transitions. [2021-06-05 22:23:37,956 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:37,957 INFO L276 IsEmpty]: Start isEmpty. Operand 5804 states and 20201 transitions. [2021-06-05 22:23:37,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:23:37,965 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:23:37,965 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:23:37,965 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-06-05 22:23:37,965 INFO L430 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:23:37,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:23:37,965 INFO L82 PathProgramCache]: Analyzing trace with hash 320959912, now seen corresponding path program 124 times [2021-06-05 22:23:37,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:23:37,966 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604202831] [2021-06-05 22:23:37,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:23:37,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:23:38,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:23:38,209 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:23:38,209 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604202831] [2021-06-05 22:23:38,209 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604202831] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:23:38,209 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:23:38,209 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:23:38,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714780723] [2021-06-05 22:23:38,209 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:23:38,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:23:38,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:23:38,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:23:38,210 INFO L87 Difference]: Start difference. First operand 5804 states and 20201 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:39,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:23:39,272 INFO L93 Difference]: Finished difference Result 6770 states and 23436 transitions. [2021-06-05 22:23:39,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 22:23:39,273 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:23:39,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:23:39,284 INFO L225 Difference]: With dead ends: 6770 [2021-06-05 22:23:39,284 INFO L226 Difference]: Without dead ends: 6681 [2021-06-05 22:23:39,285 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 718.9ms TimeCoverageRelationStatistics Valid=212, Invalid=1950, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 22:23:39,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6681 states. [2021-06-05 22:23:39,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6681 to 5808. [2021-06-05 22:23:39,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5808 states, 5807 states have (on average 3.481143447563286) internal successors, (20215), 5807 states have internal predecessors, (20215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:39,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5808 states to 5808 states and 20215 transitions. [2021-06-05 22:23:39,375 INFO L78 Accepts]: Start accepts. Automaton has 5808 states and 20215 transitions. Word has length 47 [2021-06-05 22:23:39,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:23:39,375 INFO L482 AbstractCegarLoop]: Abstraction has 5808 states and 20215 transitions. [2021-06-05 22:23:39,375 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:39,375 INFO L276 IsEmpty]: Start isEmpty. Operand 5808 states and 20215 transitions. [2021-06-05 22:23:39,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:23:39,383 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:23:39,383 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:23:39,383 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-06-05 22:23:39,383 INFO L430 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:23:39,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:23:39,383 INFO L82 PathProgramCache]: Analyzing trace with hash -2701912, now seen corresponding path program 125 times [2021-06-05 22:23:39,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:23:39,384 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878631200] [2021-06-05 22:23:39,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:23:39,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:23:39,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:23:39,564 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:23:39,564 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878631200] [2021-06-05 22:23:39,564 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878631200] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:23:39,564 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:23:39,564 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:23:39,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111844125] [2021-06-05 22:23:39,564 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:23:39,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:23:39,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:23:39,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:23:39,565 INFO L87 Difference]: Start difference. First operand 5808 states and 20215 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:40,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:23:40,556 INFO L93 Difference]: Finished difference Result 6762 states and 23408 transitions. [2021-06-05 22:23:40,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 22:23:40,556 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:23:40,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:23:40,568 INFO L225 Difference]: With dead ends: 6762 [2021-06-05 22:23:40,569 INFO L226 Difference]: Without dead ends: 6657 [2021-06-05 22:23:40,569 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 641.5ms TimeCoverageRelationStatistics Valid=200, Invalid=1780, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 22:23:40,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6657 states. [2021-06-05 22:23:40,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6657 to 5824. [2021-06-05 22:23:40,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5824 states, 5823 states have (on average 3.47982139790486) internal successors, (20263), 5823 states have internal predecessors, (20263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:40,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5824 states to 5824 states and 20263 transitions. [2021-06-05 22:23:40,703 INFO L78 Accepts]: Start accepts. Automaton has 5824 states and 20263 transitions. Word has length 47 [2021-06-05 22:23:40,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:23:40,703 INFO L482 AbstractCegarLoop]: Abstraction has 5824 states and 20263 transitions. [2021-06-05 22:23:40,703 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:40,703 INFO L276 IsEmpty]: Start isEmpty. Operand 5824 states and 20263 transitions. [2021-06-05 22:23:40,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:23:40,711 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:23:40,711 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:23:40,711 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-06-05 22:23:40,711 INFO L430 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:23:40,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:23:40,711 INFO L82 PathProgramCache]: Analyzing trace with hash 53409542, now seen corresponding path program 126 times [2021-06-05 22:23:40,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:23:40,711 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544717166] [2021-06-05 22:23:40,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:23:40,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:23:40,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:23:40,888 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:23:40,888 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544717166] [2021-06-05 22:23:40,888 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544717166] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:23:40,888 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:23:40,888 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:23:40,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146601584] [2021-06-05 22:23:40,888 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:23:40,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:23:40,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:23:40,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:23:40,888 INFO L87 Difference]: Start difference. First operand 5824 states and 20263 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:41,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:23:41,942 INFO L93 Difference]: Finished difference Result 6731 states and 23345 transitions. [2021-06-05 22:23:41,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 22:23:41,942 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:23:41,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:23:41,954 INFO L225 Difference]: With dead ends: 6731 [2021-06-05 22:23:41,954 INFO L226 Difference]: Without dead ends: 6570 [2021-06-05 22:23:41,954 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 660.4ms TimeCoverageRelationStatistics Valid=222, Invalid=2034, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 22:23:41,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6570 states. [2021-06-05 22:23:42,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6570 to 5808. [2021-06-05 22:23:42,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5808 states, 5807 states have (on average 3.480454623729981) internal successors, (20211), 5807 states have internal predecessors, (20211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:42,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5808 states to 5808 states and 20211 transitions. [2021-06-05 22:23:42,042 INFO L78 Accepts]: Start accepts. Automaton has 5808 states and 20211 transitions. Word has length 47 [2021-06-05 22:23:42,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:23:42,042 INFO L482 AbstractCegarLoop]: Abstraction has 5808 states and 20211 transitions. [2021-06-05 22:23:42,042 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:42,042 INFO L276 IsEmpty]: Start isEmpty. Operand 5808 states and 20211 transitions. [2021-06-05 22:23:42,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:23:42,050 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:23:42,050 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:23:42,050 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-06-05 22:23:42,050 INFO L430 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:23:42,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:23:42,050 INFO L82 PathProgramCache]: Analyzing trace with hash 203468170, now seen corresponding path program 127 times [2021-06-05 22:23:42,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:23:42,051 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490952192] [2021-06-05 22:23:42,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:23:42,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:23:42,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:23:42,225 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:23:42,225 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490952192] [2021-06-05 22:23:42,225 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490952192] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:23:42,225 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:23:42,225 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:23:42,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700774246] [2021-06-05 22:23:42,226 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:23:42,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:23:42,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:23:42,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:23:42,226 INFO L87 Difference]: Start difference. First operand 5808 states and 20211 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:43,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:23:43,280 INFO L93 Difference]: Finished difference Result 6910 states and 23799 transitions. [2021-06-05 22:23:43,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 22:23:43,280 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:23:43,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:23:43,292 INFO L225 Difference]: With dead ends: 6910 [2021-06-05 22:23:43,293 INFO L226 Difference]: Without dead ends: 6821 [2021-06-05 22:23:43,293 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 637.2ms TimeCoverageRelationStatistics Valid=202, Invalid=1868, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 22:23:43,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6821 states. [2021-06-05 22:23:43,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6821 to 5810. [2021-06-05 22:23:43,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5810 states, 5809 states have (on average 3.480461353072818) internal successors, (20218), 5809 states have internal predecessors, (20218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:43,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5810 states to 5810 states and 20218 transitions. [2021-06-05 22:23:43,399 INFO L78 Accepts]: Start accepts. Automaton has 5810 states and 20218 transitions. Word has length 47 [2021-06-05 22:23:43,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:23:43,399 INFO L482 AbstractCegarLoop]: Abstraction has 5810 states and 20218 transitions. [2021-06-05 22:23:43,399 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:43,399 INFO L276 IsEmpty]: Start isEmpty. Operand 5810 states and 20218 transitions. [2021-06-05 22:23:43,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:23:43,406 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:23:43,406 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:23:43,406 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2021-06-05 22:23:43,406 INFO L430 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:23:43,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:23:43,407 INFO L82 PathProgramCache]: Analyzing trace with hash -120193654, now seen corresponding path program 128 times [2021-06-05 22:23:43,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:23:43,407 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539063440] [2021-06-05 22:23:43,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:23:43,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:23:43,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:23:43,589 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:23:43,589 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539063440] [2021-06-05 22:23:43,589 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539063440] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:23:43,589 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:23:43,589 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:23:43,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029144952] [2021-06-05 22:23:43,589 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:23:43,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:23:43,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:23:43,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:23:43,590 INFO L87 Difference]: Start difference. First operand 5810 states and 20218 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:44,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:23:44,565 INFO L93 Difference]: Finished difference Result 6902 states and 23771 transitions. [2021-06-05 22:23:44,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 22:23:44,565 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:23:44,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:23:44,578 INFO L225 Difference]: With dead ends: 6902 [2021-06-05 22:23:44,578 INFO L226 Difference]: Without dead ends: 6797 [2021-06-05 22:23:44,578 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 607.5ms TimeCoverageRelationStatistics Valid=195, Invalid=1785, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 22:23:44,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6797 states. [2021-06-05 22:23:44,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6797 to 5810. [2021-06-05 22:23:44,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5810 states, 5809 states have (on average 3.4801170597348943) internal successors, (20216), 5809 states have internal predecessors, (20216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:44,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5810 states to 5810 states and 20216 transitions. [2021-06-05 22:23:44,670 INFO L78 Accepts]: Start accepts. Automaton has 5810 states and 20216 transitions. Word has length 47 [2021-06-05 22:23:44,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:23:44,670 INFO L482 AbstractCegarLoop]: Abstraction has 5810 states and 20216 transitions. [2021-06-05 22:23:44,670 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:44,670 INFO L276 IsEmpty]: Start isEmpty. Operand 5810 states and 20216 transitions. [2021-06-05 22:23:44,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:23:44,678 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:23:44,678 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:23:44,678 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-06-05 22:23:44,678 INFO L430 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:23:44,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:23:44,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1744960088, now seen corresponding path program 129 times [2021-06-05 22:23:44,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:23:44,678 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770936972] [2021-06-05 22:23:44,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:23:44,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:23:44,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:23:44,853 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:23:44,853 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770936972] [2021-06-05 22:23:44,853 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770936972] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:23:44,853 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:23:44,853 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:23:44,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927895301] [2021-06-05 22:23:44,853 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:23:44,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:23:44,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:23:44,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:23:44,854 INFO L87 Difference]: Start difference. First operand 5810 states and 20216 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:46,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:23:46,572 INFO L93 Difference]: Finished difference Result 7949 states and 27657 transitions. [2021-06-05 22:23:46,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-05 22:23:46,572 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:23:46,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:23:46,588 INFO L225 Difference]: With dead ends: 7949 [2021-06-05 22:23:46,588 INFO L226 Difference]: Without dead ends: 7844 [2021-06-05 22:23:46,588 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 837 ImplicationChecksByTransitivity, 922.1ms TimeCoverageRelationStatistics Valid=310, Invalid=3112, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 22:23:46,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7844 states. [2021-06-05 22:23:46,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7844 to 5756. [2021-06-05 22:23:46,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5756 states, 5755 states have (on average 3.4802780191138143) internal successors, (20029), 5755 states have internal predecessors, (20029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:46,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5756 states to 5756 states and 20029 transitions. [2021-06-05 22:23:46,687 INFO L78 Accepts]: Start accepts. Automaton has 5756 states and 20029 transitions. Word has length 47 [2021-06-05 22:23:46,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:23:46,687 INFO L482 AbstractCegarLoop]: Abstraction has 5756 states and 20029 transitions. [2021-06-05 22:23:46,687 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:46,687 INFO L276 IsEmpty]: Start isEmpty. Operand 5756 states and 20029 transitions. [2021-06-05 22:23:46,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:23:46,694 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:23:46,694 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:23:46,695 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-06-05 22:23:46,695 INFO L430 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:23:46,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:23:46,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1774889606, now seen corresponding path program 130 times [2021-06-05 22:23:46,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:23:46,695 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511473959] [2021-06-05 22:23:46,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:23:46,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:23:46,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:23:46,874 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:23:46,874 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511473959] [2021-06-05 22:23:46,874 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511473959] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:23:46,874 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:23:46,874 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:23:46,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732324643] [2021-06-05 22:23:46,874 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:23:46,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:23:46,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:23:46,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:23:46,875 INFO L87 Difference]: Start difference. First operand 5756 states and 20029 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:48,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:23:48,235 INFO L93 Difference]: Finished difference Result 7705 states and 26697 transitions. [2021-06-05 22:23:48,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 22:23:48,235 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:23:48,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:23:48,247 INFO L225 Difference]: With dead ends: 7705 [2021-06-05 22:23:48,248 INFO L226 Difference]: Without dead ends: 7610 [2021-06-05 22:23:48,248 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 611 ImplicationChecksByTransitivity, 768.2ms TimeCoverageRelationStatistics Valid=258, Invalid=2498, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 22:23:48,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7610 states. [2021-06-05 22:23:48,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7610 to 5724. [2021-06-05 22:23:48,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5724 states, 5723 states have (on average 3.482264546566486) internal successors, (19929), 5723 states have internal predecessors, (19929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:48,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5724 states to 5724 states and 19929 transitions. [2021-06-05 22:23:48,344 INFO L78 Accepts]: Start accepts. Automaton has 5724 states and 19929 transitions. Word has length 47 [2021-06-05 22:23:48,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:23:48,344 INFO L482 AbstractCegarLoop]: Abstraction has 5724 states and 19929 transitions. [2021-06-05 22:23:48,344 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:48,344 INFO L276 IsEmpty]: Start isEmpty. Operand 5724 states and 19929 transitions. [2021-06-05 22:23:48,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:23:48,353 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:23:48,353 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:23:48,353 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2021-06-05 22:23:48,353 INFO L430 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:23:48,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:23:48,353 INFO L82 PathProgramCache]: Analyzing trace with hash 2073781284, now seen corresponding path program 131 times [2021-06-05 22:23:48,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:23:48,353 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825627860] [2021-06-05 22:23:48,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:23:48,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:23:48,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:23:48,596 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:23:48,596 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825627860] [2021-06-05 22:23:48,596 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825627860] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:23:48,596 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:23:48,596 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:23:48,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013698520] [2021-06-05 22:23:48,596 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:23:48,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:23:48,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:23:48,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:23:48,596 INFO L87 Difference]: Start difference. First operand 5724 states and 19929 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:49,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:23:49,523 INFO L93 Difference]: Finished difference Result 6814 states and 23479 transitions. [2021-06-05 22:23:49,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 22:23:49,523 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:23:49,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:23:49,535 INFO L225 Difference]: With dead ends: 6814 [2021-06-05 22:23:49,535 INFO L226 Difference]: Without dead ends: 6717 [2021-06-05 22:23:49,535 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 633.6ms TimeCoverageRelationStatistics Valid=183, Invalid=1709, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 22:23:49,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6717 states. [2021-06-05 22:23:49,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6717 to 5732. [2021-06-05 22:23:49,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5732 states, 5731 states have (on average 3.480544407607747) internal successors, (19947), 5731 states have internal predecessors, (19947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:49,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5732 states to 5732 states and 19947 transitions. [2021-06-05 22:23:49,626 INFO L78 Accepts]: Start accepts. Automaton has 5732 states and 19947 transitions. Word has length 47 [2021-06-05 22:23:49,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:23:49,626 INFO L482 AbstractCegarLoop]: Abstraction has 5732 states and 19947 transitions. [2021-06-05 22:23:49,626 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:49,626 INFO L276 IsEmpty]: Start isEmpty. Operand 5732 states and 19947 transitions. [2021-06-05 22:23:49,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:23:49,633 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:23:49,634 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:23:49,634 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2021-06-05 22:23:49,634 INFO L430 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:23:49,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:23:49,634 INFO L82 PathProgramCache]: Analyzing trace with hash 348360774, now seen corresponding path program 132 times [2021-06-05 22:23:49,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:23:49,634 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993578273] [2021-06-05 22:23:49,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:23:49,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:23:49,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:23:49,811 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:23:49,811 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993578273] [2021-06-05 22:23:49,811 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993578273] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:23:49,811 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:23:49,811 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:23:49,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771281724] [2021-06-05 22:23:49,811 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:23:49,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:23:49,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:23:49,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:23:49,812 INFO L87 Difference]: Start difference. First operand 5732 states and 19947 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:50,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:23:50,750 INFO L93 Difference]: Finished difference Result 6790 states and 23389 transitions. [2021-06-05 22:23:50,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 22:23:50,750 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:23:50,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:23:50,763 INFO L225 Difference]: With dead ends: 6790 [2021-06-05 22:23:50,763 INFO L226 Difference]: Without dead ends: 6691 [2021-06-05 22:23:50,764 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 567.8ms TimeCoverageRelationStatistics Valid=173, Invalid=1633, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 22:23:50,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6691 states. [2021-06-05 22:23:50,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6691 to 5724. [2021-06-05 22:23:50,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5724 states, 5723 states have (on average 3.481915079503757) internal successors, (19927), 5723 states have internal predecessors, (19927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:50,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5724 states to 5724 states and 19927 transitions. [2021-06-05 22:23:50,864 INFO L78 Accepts]: Start accepts. Automaton has 5724 states and 19927 transitions. Word has length 47 [2021-06-05 22:23:50,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:23:50,865 INFO L482 AbstractCegarLoop]: Abstraction has 5724 states and 19927 transitions. [2021-06-05 22:23:50,865 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:50,865 INFO L276 IsEmpty]: Start isEmpty. Operand 5724 states and 19927 transitions. [2021-06-05 22:23:50,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:23:50,873 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:23:50,873 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:23:50,873 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2021-06-05 22:23:50,873 INFO L430 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:23:50,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:23:50,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1424105338, now seen corresponding path program 133 times [2021-06-05 22:23:50,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:23:50,873 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068958590] [2021-06-05 22:23:50,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:23:50,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:23:51,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:23:51,075 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:23:51,075 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068958590] [2021-06-05 22:23:51,075 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068958590] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:23:51,075 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:23:51,075 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:23:51,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415779836] [2021-06-05 22:23:51,075 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:23:51,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:23:51,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:23:51,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:23:51,075 INFO L87 Difference]: Start difference. First operand 5724 states and 19927 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:51,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:23:51,997 INFO L93 Difference]: Finished difference Result 6545 states and 22710 transitions. [2021-06-05 22:23:51,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 22:23:51,997 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:23:51,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:23:52,007 INFO L225 Difference]: With dead ends: 6545 [2021-06-05 22:23:52,007 INFO L226 Difference]: Without dead ends: 6400 [2021-06-05 22:23:52,008 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 572.3ms TimeCoverageRelationStatistics Valid=185, Invalid=1707, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 22:23:52,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6400 states. [2021-06-05 22:23:52,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6400 to 5736. [2021-06-05 22:23:52,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5736 states, 5735 states have (on average 3.479860505666957) internal successors, (19957), 5735 states have internal predecessors, (19957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:52,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5736 states to 5736 states and 19957 transitions. [2021-06-05 22:23:52,094 INFO L78 Accepts]: Start accepts. Automaton has 5736 states and 19957 transitions. Word has length 47 [2021-06-05 22:23:52,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:23:52,094 INFO L482 AbstractCegarLoop]: Abstraction has 5736 states and 19957 transitions. [2021-06-05 22:23:52,094 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:52,094 INFO L276 IsEmpty]: Start isEmpty. Operand 5736 states and 19957 transitions. [2021-06-05 22:23:52,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:23:52,102 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:23:52,102 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:23:52,102 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2021-06-05 22:23:52,102 INFO L430 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:23:52,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:23:52,102 INFO L82 PathProgramCache]: Analyzing trace with hash -519347368, now seen corresponding path program 134 times [2021-06-05 22:23:52,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:23:52,102 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064125326] [2021-06-05 22:23:52,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:23:52,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:23:52,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:23:52,278 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:23:52,278 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064125326] [2021-06-05 22:23:52,278 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064125326] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:23:52,278 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:23:52,278 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:23:52,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074883156] [2021-06-05 22:23:52,278 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:23:52,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:23:52,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:23:52,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:23:52,279 INFO L87 Difference]: Start difference. First operand 5736 states and 19957 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:53,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:23:53,159 INFO L93 Difference]: Finished difference Result 6665 states and 23013 transitions. [2021-06-05 22:23:53,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 22:23:53,160 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:23:53,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:23:53,172 INFO L225 Difference]: With dead ends: 6665 [2021-06-05 22:23:53,172 INFO L226 Difference]: Without dead ends: 6568 [2021-06-05 22:23:53,172 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 545.1ms TimeCoverageRelationStatistics Valid=167, Invalid=1555, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 22:23:53,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6568 states. [2021-06-05 22:23:53,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6568 to 5742. [2021-06-05 22:23:53,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5742 states, 5741 states have (on average 3.4788364396446614) internal successors, (19972), 5741 states have internal predecessors, (19972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:53,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5742 states to 5742 states and 19972 transitions. [2021-06-05 22:23:53,252 INFO L78 Accepts]: Start accepts. Automaton has 5742 states and 19972 transitions. Word has length 47 [2021-06-05 22:23:53,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:23:53,252 INFO L482 AbstractCegarLoop]: Abstraction has 5742 states and 19972 transitions. [2021-06-05 22:23:53,252 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:53,252 INFO L276 IsEmpty]: Start isEmpty. Operand 5742 states and 19972 transitions. [2021-06-05 22:23:53,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:23:53,259 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:23:53,259 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:23:53,259 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2021-06-05 22:23:53,259 INFO L430 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:23:53,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:23:53,259 INFO L82 PathProgramCache]: Analyzing trace with hash 2050199418, now seen corresponding path program 135 times [2021-06-05 22:23:53,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:23:53,259 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206938372] [2021-06-05 22:23:53,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:23:53,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:23:53,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:23:53,436 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:23:53,436 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206938372] [2021-06-05 22:23:53,436 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206938372] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:23:53,437 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:23:53,437 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:23:53,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103009083] [2021-06-05 22:23:53,437 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:23:53,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:23:53,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:23:53,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:23:53,437 INFO L87 Difference]: Start difference. First operand 5742 states and 19972 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:54,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:23:54,319 INFO L93 Difference]: Finished difference Result 6566 states and 22708 transitions. [2021-06-05 22:23:54,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 22:23:54,319 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:23:54,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:23:54,331 INFO L225 Difference]: With dead ends: 6566 [2021-06-05 22:23:54,331 INFO L226 Difference]: Without dead ends: 6437 [2021-06-05 22:23:54,331 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 535.4ms TimeCoverageRelationStatistics Valid=158, Invalid=1482, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 22:23:54,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6437 states. [2021-06-05 22:23:54,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6437 to 5704. [2021-06-05 22:23:54,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5704 states, 5703 states have (on average 3.4864106610555847) internal successors, (19883), 5703 states have internal predecessors, (19883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:54,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5704 states to 5704 states and 19883 transitions. [2021-06-05 22:23:54,420 INFO L78 Accepts]: Start accepts. Automaton has 5704 states and 19883 transitions. Word has length 47 [2021-06-05 22:23:54,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:23:54,420 INFO L482 AbstractCegarLoop]: Abstraction has 5704 states and 19883 transitions. [2021-06-05 22:23:54,420 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:54,420 INFO L276 IsEmpty]: Start isEmpty. Operand 5704 states and 19883 transitions. [2021-06-05 22:23:54,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:23:54,427 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:23:54,427 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:23:54,428 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2021-06-05 22:23:54,428 INFO L430 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:23:54,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:23:54,428 INFO L82 PathProgramCache]: Analyzing trace with hash -413290774, now seen corresponding path program 136 times [2021-06-05 22:23:54,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:23:54,428 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448431150] [2021-06-05 22:23:54,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:23:54,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:23:54,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:23:54,588 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:23:54,588 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448431150] [2021-06-05 22:23:54,588 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448431150] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:23:54,588 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:23:54,588 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 22:23:54,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295378693] [2021-06-05 22:23:54,588 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 22:23:54,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:23:54,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 22:23:54,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2021-06-05 22:23:54,589 INFO L87 Difference]: Start difference. First operand 5704 states and 19883 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:55,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:23:55,413 INFO L93 Difference]: Finished difference Result 6483 states and 22479 transitions. [2021-06-05 22:23:55,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 22:23:55,414 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:23:55,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:23:55,426 INFO L225 Difference]: With dead ends: 6483 [2021-06-05 22:23:55,426 INFO L226 Difference]: Without dead ends: 6346 [2021-06-05 22:23:55,426 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 489.2ms TimeCoverageRelationStatistics Valid=151, Invalid=1255, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 22:23:55,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6346 states. [2021-06-05 22:23:55,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6346 to 5720. [2021-06-05 22:23:55,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5720 states, 5719 states have (on average 3.485049833887043) internal successors, (19931), 5719 states have internal predecessors, (19931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:55,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5720 states to 5720 states and 19931 transitions. [2021-06-05 22:23:55,511 INFO L78 Accepts]: Start accepts. Automaton has 5720 states and 19931 transitions. Word has length 47 [2021-06-05 22:23:55,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:23:55,511 INFO L482 AbstractCegarLoop]: Abstraction has 5720 states and 19931 transitions. [2021-06-05 22:23:55,511 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:55,511 INFO L276 IsEmpty]: Start isEmpty. Operand 5720 states and 19931 transitions. [2021-06-05 22:23:55,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:23:55,518 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:23:55,518 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:23:55,518 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2021-06-05 22:23:55,518 INFO L430 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:23:55,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:23:55,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1104405448, now seen corresponding path program 137 times [2021-06-05 22:23:55,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:23:55,518 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521381430] [2021-06-05 22:23:55,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:23:55,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:23:55,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:23:55,676 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:23:55,676 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521381430] [2021-06-05 22:23:55,676 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521381430] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:23:55,676 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:23:55,676 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:23:55,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052605412] [2021-06-05 22:23:55,677 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:23:55,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:23:55,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:23:55,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:23:55,677 INFO L87 Difference]: Start difference. First operand 5720 states and 19931 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:56,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:23:56,597 INFO L93 Difference]: Finished difference Result 6542 states and 22638 transitions. [2021-06-05 22:23:56,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 22:23:56,598 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:23:56,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:23:56,610 INFO L225 Difference]: With dead ends: 6542 [2021-06-05 22:23:56,610 INFO L226 Difference]: Without dead ends: 6453 [2021-06-05 22:23:56,610 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 539.9ms TimeCoverageRelationStatistics Valid=167, Invalid=1473, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 22:23:56,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6453 states. [2021-06-05 22:23:56,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6453 to 5784. [2021-06-05 22:23:56,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5784 states, 5783 states have (on average 3.483831921148193) internal successors, (20147), 5783 states have internal predecessors, (20147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:56,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5784 states to 5784 states and 20147 transitions. [2021-06-05 22:23:56,704 INFO L78 Accepts]: Start accepts. Automaton has 5784 states and 20147 transitions. Word has length 47 [2021-06-05 22:23:56,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:23:56,704 INFO L482 AbstractCegarLoop]: Abstraction has 5784 states and 20147 transitions. [2021-06-05 22:23:56,704 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:56,704 INFO L276 IsEmpty]: Start isEmpty. Operand 5784 states and 20147 transitions. [2021-06-05 22:23:56,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:23:56,712 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:23:56,712 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:23:56,712 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2021-06-05 22:23:56,712 INFO L430 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:23:56,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:23:56,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1538434794, now seen corresponding path program 138 times [2021-06-05 22:23:56,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:23:56,712 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995251810] [2021-06-05 22:23:56,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:23:56,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:23:56,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:23:56,879 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:23:56,879 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995251810] [2021-06-05 22:23:56,879 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995251810] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:23:56,879 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:23:56,879 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:23:56,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387160941] [2021-06-05 22:23:56,879 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:23:56,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:23:56,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:23:56,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:23:56,879 INFO L87 Difference]: Start difference. First operand 5784 states and 20147 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:57,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:23:57,723 INFO L93 Difference]: Finished difference Result 6435 states and 22311 transitions. [2021-06-05 22:23:57,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 22:23:57,724 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:23:57,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:23:57,736 INFO L225 Difference]: With dead ends: 6435 [2021-06-05 22:23:57,736 INFO L226 Difference]: Without dead ends: 6306 [2021-06-05 22:23:57,736 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 500.3ms TimeCoverageRelationStatistics Valid=150, Invalid=1332, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 22:23:57,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6306 states. [2021-06-05 22:23:57,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6306 to 5784. [2021-06-05 22:23:57,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5784 states, 5783 states have (on average 3.4796818260418467) internal successors, (20123), 5783 states have internal predecessors, (20123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:57,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5784 states to 5784 states and 20123 transitions. [2021-06-05 22:23:57,833 INFO L78 Accepts]: Start accepts. Automaton has 5784 states and 20123 transitions. Word has length 47 [2021-06-05 22:23:57,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:23:57,833 INFO L482 AbstractCegarLoop]: Abstraction has 5784 states and 20123 transitions. [2021-06-05 22:23:57,833 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:57,833 INFO L276 IsEmpty]: Start isEmpty. Operand 5784 states and 20123 transitions. [2021-06-05 22:23:57,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:23:57,841 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:23:57,841 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:23:57,841 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2021-06-05 22:23:57,841 INFO L430 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:23:57,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:23:57,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1195099016, now seen corresponding path program 139 times [2021-06-05 22:23:57,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:23:57,841 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619514508] [2021-06-05 22:23:57,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:23:57,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:23:58,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:23:58,002 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:23:58,002 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619514508] [2021-06-05 22:23:58,002 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619514508] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:23:58,002 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:23:58,002 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:23:58,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566230682] [2021-06-05 22:23:58,002 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:23:58,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:23:58,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:23:58,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:23:58,002 INFO L87 Difference]: Start difference. First operand 5784 states and 20123 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:58,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:23:58,883 INFO L93 Difference]: Finished difference Result 6494 states and 22478 transitions. [2021-06-05 22:23:58,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 22:23:58,883 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:23:58,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:23:58,893 INFO L225 Difference]: With dead ends: 6494 [2021-06-05 22:23:58,893 INFO L226 Difference]: Without dead ends: 6405 [2021-06-05 22:23:58,894 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 551.3ms TimeCoverageRelationStatistics Valid=168, Invalid=1472, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 22:23:58,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6405 states. [2021-06-05 22:23:58,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6405 to 5784. [2021-06-05 22:23:58,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5784 states, 5783 states have (on average 3.4796818260418467) internal successors, (20123), 5783 states have internal predecessors, (20123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:58,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5784 states to 5784 states and 20123 transitions. [2021-06-05 22:23:58,992 INFO L78 Accepts]: Start accepts. Automaton has 5784 states and 20123 transitions. Word has length 47 [2021-06-05 22:23:58,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:23:58,992 INFO L482 AbstractCegarLoop]: Abstraction has 5784 states and 20123 transitions. [2021-06-05 22:23:58,992 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:58,992 INFO L276 IsEmpty]: Start isEmpty. Operand 5784 states and 20123 transitions. [2021-06-05 22:23:58,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:23:58,999 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:23:58,999 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:23:58,999 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2021-06-05 22:23:58,999 INFO L430 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:23:58,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:23:58,999 INFO L82 PathProgramCache]: Analyzing trace with hash -761069670, now seen corresponding path program 140 times [2021-06-05 22:23:58,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:23:58,999 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619524320] [2021-06-05 22:23:58,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:23:59,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:23:59,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:23:59,170 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:23:59,170 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619524320] [2021-06-05 22:23:59,170 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619524320] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:23:59,170 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:23:59,170 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:23:59,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591910469] [2021-06-05 22:23:59,170 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:23:59,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:23:59,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:23:59,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:23:59,171 INFO L87 Difference]: Start difference. First operand 5784 states and 20123 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:23:59,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:23:59,993 INFO L93 Difference]: Finished difference Result 6486 states and 22450 transitions. [2021-06-05 22:23:59,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 22:23:59,993 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:23:59,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:24:00,005 INFO L225 Difference]: With dead ends: 6486 [2021-06-05 22:24:00,006 INFO L226 Difference]: Without dead ends: 6381 [2021-06-05 22:24:00,006 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 507.6ms TimeCoverageRelationStatistics Valid=154, Invalid=1328, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 22:24:00,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6381 states. [2021-06-05 22:24:00,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6381 to 5800. [2021-06-05 22:24:00,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5800 states, 5799 states have (on average 3.4783583376444214) internal successors, (20171), 5799 states have internal predecessors, (20171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:24:00,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5800 states to 5800 states and 20171 transitions. [2021-06-05 22:24:00,099 INFO L78 Accepts]: Start accepts. Automaton has 5800 states and 20171 transitions. Word has length 47 [2021-06-05 22:24:00,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:24:00,099 INFO L482 AbstractCegarLoop]: Abstraction has 5800 states and 20171 transitions. [2021-06-05 22:24:00,099 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:24:00,099 INFO L276 IsEmpty]: Start isEmpty. Operand 5800 states and 20171 transitions. [2021-06-05 22:24:00,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:24:00,107 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:24:00,107 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:24:00,107 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2021-06-05 22:24:00,107 INFO L430 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:24:00,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:24:00,107 INFO L82 PathProgramCache]: Analyzing trace with hash 511864038, now seen corresponding path program 141 times [2021-06-05 22:24:00,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:24:00,107 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517879292] [2021-06-05 22:24:00,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:24:00,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:24:00,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:24:00,268 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:24:00,268 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517879292] [2021-06-05 22:24:00,268 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517879292] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:24:00,268 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:24:00,268 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:24:00,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257814170] [2021-06-05 22:24:00,268 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:24:00,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:24:00,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:24:00,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:24:00,269 INFO L87 Difference]: Start difference. First operand 5800 states and 20171 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:24:01,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:24:01,043 INFO L93 Difference]: Finished difference Result 6379 states and 22123 transitions. [2021-06-05 22:24:01,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 22:24:01,043 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:24:01,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:24:01,054 INFO L225 Difference]: With dead ends: 6379 [2021-06-05 22:24:01,054 INFO L226 Difference]: Without dead ends: 6110 [2021-06-05 22:24:01,054 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 467.1ms TimeCoverageRelationStatistics Valid=142, Invalid=1190, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 22:24:01,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6110 states. [2021-06-05 22:24:01,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6110 to 5676. [2021-06-05 22:24:01,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5676 states, 5675 states have (on average 3.490925110132159) internal successors, (19811), 5675 states have internal predecessors, (19811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:24:01,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5676 states to 5676 states and 19811 transitions. [2021-06-05 22:24:01,142 INFO L78 Accepts]: Start accepts. Automaton has 5676 states and 19811 transitions. Word has length 47 [2021-06-05 22:24:01,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:24:01,142 INFO L482 AbstractCegarLoop]: Abstraction has 5676 states and 19811 transitions. [2021-06-05 22:24:01,142 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:24:01,142 INFO L276 IsEmpty]: Start isEmpty. Operand 5676 states and 19811 transitions. [2021-06-05 22:24:01,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:24:01,150 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:24:01,150 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:24:01,150 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2021-06-05 22:24:01,150 INFO L430 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:24:01,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:24:01,150 INFO L82 PathProgramCache]: Analyzing trace with hash 784319404, now seen corresponding path program 142 times [2021-06-05 22:24:01,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:24:01,150 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533001365] [2021-06-05 22:24:01,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:24:01,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:24:01,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:24:01,339 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:24:01,339 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533001365] [2021-06-05 22:24:01,339 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533001365] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:24:01,339 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:24:01,339 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:24:01,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862620212] [2021-06-05 22:24:01,339 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:24:01,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:24:01,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:24:01,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:24:01,340 INFO L87 Difference]: Start difference. First operand 5676 states and 19811 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:24:03,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:24:03,768 INFO L93 Difference]: Finished difference Result 9641 states and 33896 transitions. [2021-06-05 22:24:03,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-05 22:24:03,768 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:24:03,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:24:03,785 INFO L225 Difference]: With dead ends: 9641 [2021-06-05 22:24:03,785 INFO L226 Difference]: Without dead ends: 9414 [2021-06-05 22:24:03,785 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1415 ImplicationChecksByTransitivity, 1352.8ms TimeCoverageRelationStatistics Valid=474, Invalid=4496, Unknown=0, NotChecked=0, Total=4970 [2021-06-05 22:24:03,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9414 states. [2021-06-05 22:24:03,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9414 to 5851. [2021-06-05 22:24:03,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5851 states, 5850 states have (on average 3.4905982905982906) internal successors, (20420), 5850 states have internal predecessors, (20420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:24:03,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5851 states to 5851 states and 20420 transitions. [2021-06-05 22:24:03,898 INFO L78 Accepts]: Start accepts. Automaton has 5851 states and 20420 transitions. Word has length 47 [2021-06-05 22:24:03,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:24:03,898 INFO L482 AbstractCegarLoop]: Abstraction has 5851 states and 20420 transitions. [2021-06-05 22:24:03,898 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:24:03,898 INFO L276 IsEmpty]: Start isEmpty. Operand 5851 states and 20420 transitions. [2021-06-05 22:24:03,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:24:03,906 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:24:03,906 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:24:03,906 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2021-06-05 22:24:03,906 INFO L430 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:24:03,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:24:03,907 INFO L82 PathProgramCache]: Analyzing trace with hash -566429200, now seen corresponding path program 143 times [2021-06-05 22:24:03,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:24:03,907 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907835010] [2021-06-05 22:24:03,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:24:03,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:24:04,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:24:04,097 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:24:04,097 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907835010] [2021-06-05 22:24:04,097 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907835010] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:24:04,097 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:24:04,097 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:24:04,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27850346] [2021-06-05 22:24:04,097 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:24:04,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:24:04,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:24:04,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:24:04,098 INFO L87 Difference]: Start difference. First operand 5851 states and 20420 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:24:07,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:24:07,512 INFO L93 Difference]: Finished difference Result 11528 states and 40542 transitions. [2021-06-05 22:24:07,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-06-05 22:24:07,512 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:24:07,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:24:07,532 INFO L225 Difference]: With dead ends: 11528 [2021-06-05 22:24:07,533 INFO L226 Difference]: Without dead ends: 11339 [2021-06-05 22:24:07,533 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2833 ImplicationChecksByTransitivity, 2124.3ms TimeCoverageRelationStatistics Valid=764, Invalid=7792, Unknown=0, NotChecked=0, Total=8556 [2021-06-05 22:24:07,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11339 states. [2021-06-05 22:24:07,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11339 to 6216. [2021-06-05 22:24:07,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6216 states, 6215 states have (on average 3.4989541432019307) internal successors, (21746), 6215 states have internal predecessors, (21746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:24:07,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6216 states to 6216 states and 21746 transitions. [2021-06-05 22:24:07,660 INFO L78 Accepts]: Start accepts. Automaton has 6216 states and 21746 transitions. Word has length 47 [2021-06-05 22:24:07,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:24:07,660 INFO L482 AbstractCegarLoop]: Abstraction has 6216 states and 21746 transitions. [2021-06-05 22:24:07,660 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:24:07,660 INFO L276 IsEmpty]: Start isEmpty. Operand 6216 states and 21746 transitions. [2021-06-05 22:24:07,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:24:07,669 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:24:07,669 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:24:07,669 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2021-06-05 22:24:07,669 INFO L430 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:24:07,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:24:07,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1417081108, now seen corresponding path program 144 times [2021-06-05 22:24:07,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:24:07,670 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279288358] [2021-06-05 22:24:07,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:24:07,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:24:07,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:24:07,842 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:24:07,842 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279288358] [2021-06-05 22:24:07,842 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279288358] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:24:07,842 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:24:07,842 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:24:07,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710117482] [2021-06-05 22:24:07,842 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:24:07,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:24:07,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:24:07,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:24:07,842 INFO L87 Difference]: Start difference. First operand 6216 states and 21746 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:24:11,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:24:11,707 INFO L93 Difference]: Finished difference Result 13233 states and 46883 transitions. [2021-06-05 22:24:11,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2021-06-05 22:24:11,707 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:24:11,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:24:11,731 INFO L225 Difference]: With dead ends: 13233 [2021-06-05 22:24:11,731 INFO L226 Difference]: Without dead ends: 13030 [2021-06-05 22:24:11,732 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4236 ImplicationChecksByTransitivity, 2418.7ms TimeCoverageRelationStatistics Valid=1007, Invalid=10983, Unknown=0, NotChecked=0, Total=11990 [2021-06-05 22:24:11,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13030 states. [2021-06-05 22:24:11,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13030 to 6600. [2021-06-05 22:24:11,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6600 states, 6599 states have (on average 3.507804212759509) internal successors, (23148), 6599 states have internal predecessors, (23148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:24:11,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6600 states to 6600 states and 23148 transitions. [2021-06-05 22:24:11,887 INFO L78 Accepts]: Start accepts. Automaton has 6600 states and 23148 transitions. Word has length 47 [2021-06-05 22:24:11,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:24:11,887 INFO L482 AbstractCegarLoop]: Abstraction has 6600 states and 23148 transitions. [2021-06-05 22:24:11,887 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:24:11,887 INFO L276 IsEmpty]: Start isEmpty. Operand 6600 states and 23148 transitions. [2021-06-05 22:24:11,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:24:11,897 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:24:11,897 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:24:11,897 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2021-06-05 22:24:11,897 INFO L430 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:24:11,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:24:11,897 INFO L82 PathProgramCache]: Analyzing trace with hash 758726444, now seen corresponding path program 145 times [2021-06-05 22:24:11,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:24:11,897 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304752655] [2021-06-05 22:24:11,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:24:11,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:24:12,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:24:12,064 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:24:12,064 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304752655] [2021-06-05 22:24:12,064 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304752655] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:24:12,064 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:24:12,064 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 22:24:12,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773518124] [2021-06-05 22:24:12,064 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 22:24:12,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:24:12,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 22:24:12,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2021-06-05 22:24:12,065 INFO L87 Difference]: Start difference. First operand 6600 states and 23148 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:24:14,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:24:14,766 INFO L93 Difference]: Finished difference Result 11080 states and 38723 transitions. [2021-06-05 22:24:14,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-06-05 22:24:14,766 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:24:14,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:24:14,786 INFO L225 Difference]: With dead ends: 11080 [2021-06-05 22:24:14,786 INFO L226 Difference]: Without dead ends: 10843 [2021-06-05 22:24:14,787 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 4 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2085 ImplicationChecksByTransitivity, 1652.2ms TimeCoverageRelationStatistics Valid=605, Invalid=5875, Unknown=0, NotChecked=0, Total=6480 [2021-06-05 22:24:14,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10843 states. [2021-06-05 22:24:14,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10843 to 7034. [2021-06-05 22:24:14,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7034 states, 7033 states have (on average 3.5108772927626903) internal successors, (24692), 7033 states have internal predecessors, (24692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:24:14,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7034 states to 7034 states and 24692 transitions. [2021-06-05 22:24:14,928 INFO L78 Accepts]: Start accepts. Automaton has 7034 states and 24692 transitions. Word has length 47 [2021-06-05 22:24:14,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:24:14,928 INFO L482 AbstractCegarLoop]: Abstraction has 7034 states and 24692 transitions. [2021-06-05 22:24:14,928 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:24:14,928 INFO L276 IsEmpty]: Start isEmpty. Operand 7034 states and 24692 transitions. [2021-06-05 22:24:14,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:24:14,938 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:24:14,938 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:24:14,938 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2021-06-05 22:24:14,938 INFO L430 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:24:14,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:24:14,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1220148018, now seen corresponding path program 146 times [2021-06-05 22:24:14,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:24:14,938 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951485346] [2021-06-05 22:24:14,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:24:14,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:24:15,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:24:15,109 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:24:15,109 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951485346] [2021-06-05 22:24:15,109 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951485346] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:24:15,109 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:24:15,109 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:24:15,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056438540] [2021-06-05 22:24:15,109 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:24:15,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:24:15,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:24:15,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:24:15,110 INFO L87 Difference]: Start difference. First operand 7034 states and 24692 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:24:18,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:24:18,640 INFO L93 Difference]: Finished difference Result 12694 states and 44788 transitions. [2021-06-05 22:24:18,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-06-05 22:24:18,640 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:24:18,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:24:18,664 INFO L225 Difference]: With dead ends: 12694 [2021-06-05 22:24:18,665 INFO L226 Difference]: Without dead ends: 12457 [2021-06-05 22:24:18,665 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3070 ImplicationChecksByTransitivity, 2164.1ms TimeCoverageRelationStatistics Valid=790, Invalid=8330, Unknown=0, NotChecked=0, Total=9120 [2021-06-05 22:24:18,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12457 states. [2021-06-05 22:24:18,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12457 to 6946. [2021-06-05 22:24:18,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6946 states, 6945 states have (on average 3.5128869690424764) internal successors, (24397), 6945 states have internal predecessors, (24397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:24:18,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6946 states to 6946 states and 24397 transitions. [2021-06-05 22:24:18,806 INFO L78 Accepts]: Start accepts. Automaton has 6946 states and 24397 transitions. Word has length 47 [2021-06-05 22:24:18,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:24:18,807 INFO L482 AbstractCegarLoop]: Abstraction has 6946 states and 24397 transitions. [2021-06-05 22:24:18,807 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:24:18,807 INFO L276 IsEmpty]: Start isEmpty. Operand 6946 states and 24397 transitions. [2021-06-05 22:24:18,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:24:18,817 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:24:18,817 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:24:18,817 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2021-06-05 22:24:18,817 INFO L430 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:24:18,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:24:18,817 INFO L82 PathProgramCache]: Analyzing trace with hash -2070799926, now seen corresponding path program 147 times [2021-06-05 22:24:18,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:24:18,817 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151891020] [2021-06-05 22:24:18,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:24:18,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:24:18,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:24:18,982 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:24:18,982 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151891020] [2021-06-05 22:24:18,982 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151891020] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:24:18,982 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:24:18,982 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:24:18,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622018075] [2021-06-05 22:24:18,982 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:24:18,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:24:18,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:24:18,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:24:18,983 INFO L87 Difference]: Start difference. First operand 6946 states and 24397 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:24:22,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:24:22,404 INFO L93 Difference]: Finished difference Result 12797 states and 45311 transitions. [2021-06-05 22:24:22,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-06-05 22:24:22,405 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:24:22,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:24:22,430 INFO L225 Difference]: With dead ends: 12797 [2021-06-05 22:24:22,430 INFO L226 Difference]: Without dead ends: 12486 [2021-06-05 22:24:22,430 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2846 ImplicationChecksByTransitivity, 2014.8ms TimeCoverageRelationStatistics Valid=749, Invalid=7807, Unknown=0, NotChecked=0, Total=8556 [2021-06-05 22:24:22,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12486 states. [2021-06-05 22:24:22,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12486 to 6928. [2021-06-05 22:24:22,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6928 states, 6927 states have (on average 3.5184062364660025) internal successors, (24372), 6927 states have internal predecessors, (24372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:24:22,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6928 states to 6928 states and 24372 transitions. [2021-06-05 22:24:22,575 INFO L78 Accepts]: Start accepts. Automaton has 6928 states and 24372 transitions. Word has length 47 [2021-06-05 22:24:22,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:24:22,575 INFO L482 AbstractCegarLoop]: Abstraction has 6928 states and 24372 transitions. [2021-06-05 22:24:22,575 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:24:22,576 INFO L276 IsEmpty]: Start isEmpty. Operand 6928 states and 24372 transitions. [2021-06-05 22:24:22,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:24:22,585 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:24:22,585 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:24:22,585 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2021-06-05 22:24:22,586 INFO L430 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:24:22,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:24:22,586 INFO L82 PathProgramCache]: Analyzing trace with hash 216148908, now seen corresponding path program 148 times [2021-06-05 22:24:22,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:24:22,586 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250750020] [2021-06-05 22:24:22,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:24:22,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:24:22,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:24:22,766 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:24:22,766 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250750020] [2021-06-05 22:24:22,766 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250750020] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:24:22,766 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:24:22,766 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:24:22,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051543486] [2021-06-05 22:24:22,766 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:24:22,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:24:22,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:24:22,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:24:22,767 INFO L87 Difference]: Start difference. First operand 6928 states and 24372 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:24:25,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:24:25,676 INFO L93 Difference]: Finished difference Result 11278 states and 39722 transitions. [2021-06-05 22:24:25,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-06-05 22:24:25,676 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:24:25,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:24:25,696 INFO L225 Difference]: With dead ends: 11278 [2021-06-05 22:24:25,696 INFO L226 Difference]: Without dead ends: 11151 [2021-06-05 22:24:25,697 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1873 ImplicationChecksByTransitivity, 1615.1ms TimeCoverageRelationStatistics Valid=561, Invalid=5759, Unknown=0, NotChecked=0, Total=6320 [2021-06-05 22:24:25,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11151 states. [2021-06-05 22:24:25,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11151 to 6942. [2021-06-05 22:24:25,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6942 states, 6941 states have (on average 3.5167843250252124) internal successors, (24410), 6941 states have internal predecessors, (24410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:24:25,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6942 states to 6942 states and 24410 transitions. [2021-06-05 22:24:25,840 INFO L78 Accepts]: Start accepts. Automaton has 6942 states and 24410 transitions. Word has length 47 [2021-06-05 22:24:25,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:24:25,840 INFO L482 AbstractCegarLoop]: Abstraction has 6942 states and 24410 transitions. [2021-06-05 22:24:25,841 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:24:25,841 INFO L276 IsEmpty]: Start isEmpty. Operand 6942 states and 24410 transitions. [2021-06-05 22:24:25,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:24:25,851 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:24:25,851 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:24:25,851 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2021-06-05 22:24:25,851 INFO L430 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:24:25,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:24:25,851 INFO L82 PathProgramCache]: Analyzing trace with hash -1134599696, now seen corresponding path program 149 times [2021-06-05 22:24:25,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:24:25,851 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828226289] [2021-06-05 22:24:25,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:24:25,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:24:26,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:24:26,027 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:24:26,027 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828226289] [2021-06-05 22:24:26,027 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828226289] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:24:26,027 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:24:26,027 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:24:26,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666606086] [2021-06-05 22:24:26,028 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:24:26,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:24:26,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:24:26,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:24:26,028 INFO L87 Difference]: Start difference. First operand 6942 states and 24410 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:24:29,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:24:29,690 INFO L93 Difference]: Finished difference Result 13025 states and 45918 transitions. [2021-06-05 22:24:29,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-06-05 22:24:29,691 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:24:29,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:24:29,717 INFO L225 Difference]: With dead ends: 13025 [2021-06-05 22:24:29,717 INFO L226 Difference]: Without dead ends: 12836 [2021-06-05 22:24:29,718 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3463 ImplicationChecksByTransitivity, 2300.0ms TimeCoverageRelationStatistics Valid=885, Invalid=9417, Unknown=0, NotChecked=0, Total=10302 [2021-06-05 22:24:29,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12836 states. [2021-06-05 22:24:29,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12836 to 6956. [2021-06-05 22:24:29,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6956 states, 6955 states have (on average 3.5168943206326384) internal successors, (24460), 6955 states have internal predecessors, (24460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:24:29,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6956 states to 6956 states and 24460 transitions. [2021-06-05 22:24:29,899 INFO L78 Accepts]: Start accepts. Automaton has 6956 states and 24460 transitions. Word has length 47 [2021-06-05 22:24:29,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:24:29,899 INFO L482 AbstractCegarLoop]: Abstraction has 6956 states and 24460 transitions. [2021-06-05 22:24:29,899 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:24:29,899 INFO L276 IsEmpty]: Start isEmpty. Operand 6956 states and 24460 transitions. [2021-06-05 22:24:29,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:24:29,909 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:24:29,909 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:24:29,909 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2021-06-05 22:24:29,909 INFO L430 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:24:29,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:24:29,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1985251604, now seen corresponding path program 150 times [2021-06-05 22:24:29,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:24:29,910 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416339565] [2021-06-05 22:24:29,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:24:29,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:24:30,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:24:30,089 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:24:30,089 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416339565] [2021-06-05 22:24:30,089 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416339565] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:24:30,089 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:24:30,089 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:24:30,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240562353] [2021-06-05 22:24:30,090 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:24:30,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:24:30,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:24:30,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:24:30,090 INFO L87 Difference]: Start difference. First operand 6956 states and 24460 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:24:34,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:24:34,459 INFO L93 Difference]: Finished difference Result 14539 states and 51585 transitions. [2021-06-05 22:24:34,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2021-06-05 22:24:34,460 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:24:34,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:24:34,488 INFO L225 Difference]: With dead ends: 14539 [2021-06-05 22:24:34,488 INFO L226 Difference]: Without dead ends: 14336 [2021-06-05 22:24:34,489 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5198 ImplicationChecksByTransitivity, 2640.2ms TimeCoverageRelationStatistics Valid=1147, Invalid=13373, Unknown=0, NotChecked=0, Total=14520 [2021-06-05 22:24:34,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14336 states. [2021-06-05 22:24:34,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14336 to 6972. [2021-06-05 22:24:34,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6972 states, 6971 states have (on average 3.518863864581839) internal successors, (24530), 6971 states have internal predecessors, (24530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:24:34,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6972 states to 6972 states and 24530 transitions. [2021-06-05 22:24:34,653 INFO L78 Accepts]: Start accepts. Automaton has 6972 states and 24530 transitions. Word has length 47 [2021-06-05 22:24:34,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:24:34,654 INFO L482 AbstractCegarLoop]: Abstraction has 6972 states and 24530 transitions. [2021-06-05 22:24:34,654 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:24:34,654 INFO L276 IsEmpty]: Start isEmpty. Operand 6972 states and 24530 transitions. [2021-06-05 22:24:34,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:24:34,664 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:24:34,664 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:24:34,664 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2021-06-05 22:24:34,664 INFO L430 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:24:34,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:24:34,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1396066102, now seen corresponding path program 151 times [2021-06-05 22:24:34,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:24:34,664 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617466913] [2021-06-05 22:24:34,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:24:34,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:24:34,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:24:34,848 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:24:34,848 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617466913] [2021-06-05 22:24:34,848 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617466913] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:24:34,848 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:24:34,848 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:24:34,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792902478] [2021-06-05 22:24:34,848 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:24:34,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:24:34,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:24:34,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:24:34,848 INFO L87 Difference]: Start difference. First operand 6972 states and 24530 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:24:37,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:24:37,301 INFO L93 Difference]: Finished difference Result 10668 states and 37559 transitions. [2021-06-05 22:24:37,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-06-05 22:24:37,301 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:24:37,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:24:37,321 INFO L225 Difference]: With dead ends: 10668 [2021-06-05 22:24:37,321 INFO L226 Difference]: Without dead ends: 10541 [2021-06-05 22:24:37,322 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1385 ImplicationChecksByTransitivity, 1311.9ms TimeCoverageRelationStatistics Valid=454, Invalid=4516, Unknown=0, NotChecked=0, Total=4970 [2021-06-05 22:24:37,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10541 states. [2021-06-05 22:24:37,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10541 to 6994. [2021-06-05 22:24:37,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6994 states, 6993 states have (on average 3.5155155155155153) internal successors, (24584), 6993 states have internal predecessors, (24584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:24:37,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6994 states to 6994 states and 24584 transitions. [2021-06-05 22:24:37,465 INFO L78 Accepts]: Start accepts. Automaton has 6994 states and 24584 transitions. Word has length 47 [2021-06-05 22:24:37,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:24:37,465 INFO L482 AbstractCegarLoop]: Abstraction has 6994 states and 24584 transitions. [2021-06-05 22:24:37,465 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:24:37,466 INFO L276 IsEmpty]: Start isEmpty. Operand 6994 states and 24584 transitions. [2021-06-05 22:24:37,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:24:37,475 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:24:37,476 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:24:37,476 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2021-06-05 22:24:37,476 INFO L430 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:24:37,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:24:37,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1527703788, now seen corresponding path program 152 times [2021-06-05 22:24:37,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:24:37,476 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737341710] [2021-06-05 22:24:37,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:24:37,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:24:37,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:24:37,646 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:24:37,646 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737341710] [2021-06-05 22:24:37,646 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737341710] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:24:37,646 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:24:37,646 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:24:37,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906462857] [2021-06-05 22:24:37,647 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:24:37,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:24:37,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:24:37,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:24:37,647 INFO L87 Difference]: Start difference. First operand 6994 states and 24584 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:24:39,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:24:39,745 INFO L93 Difference]: Finished difference Result 10464 states and 36775 transitions. [2021-06-05 22:24:39,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-05 22:24:39,746 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:24:39,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:24:39,765 INFO L225 Difference]: With dead ends: 10464 [2021-06-05 22:24:39,765 INFO L226 Difference]: Without dead ends: 10364 [2021-06-05 22:24:39,766 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1140 ImplicationChecksByTransitivity, 1121.3ms TimeCoverageRelationStatistics Valid=400, Invalid=3760, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 22:24:39,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10364 states. [2021-06-05 22:24:39,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10364 to 7003. [2021-06-05 22:24:39,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7003 states, 7002 states have (on average 3.51413881748072) internal successors, (24606), 7002 states have internal predecessors, (24606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:24:39,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7003 states to 7003 states and 24606 transitions. [2021-06-05 22:24:39,905 INFO L78 Accepts]: Start accepts. Automaton has 7003 states and 24606 transitions. Word has length 47 [2021-06-05 22:24:39,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:24:39,905 INFO L482 AbstractCegarLoop]: Abstraction has 7003 states and 24606 transitions. [2021-06-05 22:24:39,905 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:24:39,905 INFO L276 IsEmpty]: Start isEmpty. Operand 7003 states and 24606 transitions. [2021-06-05 22:24:39,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:24:39,915 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:24:39,916 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:24:39,916 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2021-06-05 22:24:39,916 INFO L430 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:24:39,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:24:39,916 INFO L82 PathProgramCache]: Analyzing trace with hash 92636298, now seen corresponding path program 153 times [2021-06-05 22:24:39,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:24:39,916 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170709167] [2021-06-05 22:24:39,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:24:39,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:24:40,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:24:40,092 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:24:40,092 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170709167] [2021-06-05 22:24:40,092 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170709167] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:24:40,092 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:24:40,092 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:24:40,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436234239] [2021-06-05 22:24:40,093 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:24:40,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:24:40,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:24:40,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:24:40,093 INFO L87 Difference]: Start difference. First operand 7003 states and 24606 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:24:43,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:24:43,378 INFO L93 Difference]: Finished difference Result 11977 states and 42156 transitions. [2021-06-05 22:24:43,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-06-05 22:24:43,379 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:24:43,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:24:43,399 INFO L225 Difference]: With dead ends: 11977 [2021-06-05 22:24:43,400 INFO L226 Difference]: Without dead ends: 11823 [2021-06-05 22:24:43,400 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2795 ImplicationChecksByTransitivity, 1938.8ms TimeCoverageRelationStatistics Valid=780, Invalid=7962, Unknown=0, NotChecked=0, Total=8742 [2021-06-05 22:24:43,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11823 states. [2021-06-05 22:24:43,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11823 to 7194. [2021-06-05 22:24:43,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7194 states, 7193 states have (on average 3.510774363964966) internal successors, (25253), 7193 states have internal predecessors, (25253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:24:43,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7194 states to 7194 states and 25253 transitions. [2021-06-05 22:24:43,546 INFO L78 Accepts]: Start accepts. Automaton has 7194 states and 25253 transitions. Word has length 47 [2021-06-05 22:24:43,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:24:43,546 INFO L482 AbstractCegarLoop]: Abstraction has 7194 states and 25253 transitions. [2021-06-05 22:24:43,546 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:24:43,546 INFO L276 IsEmpty]: Start isEmpty. Operand 7194 states and 25253 transitions. [2021-06-05 22:24:43,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:24:43,556 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:24:43,556 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:24:43,556 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2021-06-05 22:24:43,556 INFO L430 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:24:43,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:24:43,557 INFO L82 PathProgramCache]: Analyzing trace with hash 650502640, now seen corresponding path program 154 times [2021-06-05 22:24:43,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:24:43,557 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942747098] [2021-06-05 22:24:43,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:24:43,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:24:43,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:24:43,732 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:24:43,732 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942747098] [2021-06-05 22:24:43,732 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942747098] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:24:43,732 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:24:43,732 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:24:43,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768175655] [2021-06-05 22:24:43,732 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:24:43,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:24:43,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:24:43,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:24:43,732 INFO L87 Difference]: Start difference. First operand 7194 states and 25253 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:24:47,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:24:47,283 INFO L93 Difference]: Finished difference Result 13905 states and 48872 transitions. [2021-06-05 22:24:47,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2021-06-05 22:24:47,284 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:24:47,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:24:47,310 INFO L225 Difference]: With dead ends: 13905 [2021-06-05 22:24:47,310 INFO L226 Difference]: Without dead ends: 13767 [2021-06-05 22:24:47,310 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3468 ImplicationChecksByTransitivity, 2100.5ms TimeCoverageRelationStatistics Valid=827, Invalid=9475, Unknown=0, NotChecked=0, Total=10302 [2021-06-05 22:24:47,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13767 states. [2021-06-05 22:24:47,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13767 to 7314. [2021-06-05 22:24:47,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7314 states, 7313 states have (on average 3.5134691645015725) internal successors, (25694), 7313 states have internal predecessors, (25694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:24:47,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7314 states to 7314 states and 25694 transitions. [2021-06-05 22:24:47,462 INFO L78 Accepts]: Start accepts. Automaton has 7314 states and 25694 transitions. Word has length 47 [2021-06-05 22:24:47,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:24:47,462 INFO L482 AbstractCegarLoop]: Abstraction has 7314 states and 25694 transitions. [2021-06-05 22:24:47,463 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:24:47,463 INFO L276 IsEmpty]: Start isEmpty. Operand 7314 states and 25694 transitions. [2021-06-05 22:24:47,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:24:47,473 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:24:47,473 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:24:47,473 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2021-06-05 22:24:47,473 INFO L430 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:24:47,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:24:47,473 INFO L82 PathProgramCache]: Analyzing trace with hash -513196308, now seen corresponding path program 155 times [2021-06-05 22:24:47,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:24:47,473 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993710619] [2021-06-05 22:24:47,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:24:47,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:24:47,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:24:47,647 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:24:47,647 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993710619] [2021-06-05 22:24:47,647 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993710619] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:24:47,647 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:24:47,647 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:24:47,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337522028] [2021-06-05 22:24:47,647 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:24:47,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:24:47,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:24:47,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:24:47,647 INFO L87 Difference]: Start difference. First operand 7314 states and 25694 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:24:51,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:24:51,793 INFO L93 Difference]: Finished difference Result 14970 states and 52737 transitions. [2021-06-05 22:24:51,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2021-06-05 22:24:51,793 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:24:51,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:24:51,823 INFO L225 Difference]: With dead ends: 14970 [2021-06-05 22:24:51,823 INFO L226 Difference]: Without dead ends: 14857 [2021-06-05 22:24:51,824 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4819 ImplicationChecksByTransitivity, 2502.1ms TimeCoverageRelationStatistics Valid=1072, Invalid=12500, Unknown=0, NotChecked=0, Total=13572 [2021-06-05 22:24:51,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14857 states. [2021-06-05 22:24:51,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14857 to 7329. [2021-06-05 22:24:51,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7329 states, 7328 states have (on average 3.513100436681223) internal successors, (25744), 7328 states have internal predecessors, (25744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:24:52,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7329 states to 7329 states and 25744 transitions. [2021-06-05 22:24:52,007 INFO L78 Accepts]: Start accepts. Automaton has 7329 states and 25744 transitions. Word has length 47 [2021-06-05 22:24:52,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:24:52,008 INFO L482 AbstractCegarLoop]: Abstraction has 7329 states and 25744 transitions. [2021-06-05 22:24:52,008 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:24:52,008 INFO L276 IsEmpty]: Start isEmpty. Operand 7329 states and 25744 transitions. [2021-06-05 22:24:52,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:24:52,019 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:24:52,019 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:24:52,019 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2021-06-05 22:24:52,019 INFO L430 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:24:52,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:24:52,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1966226550, now seen corresponding path program 156 times [2021-06-05 22:24:52,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:24:52,020 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285166903] [2021-06-05 22:24:52,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:24:52,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:24:52,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:24:52,195 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:24:52,195 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285166903] [2021-06-05 22:24:52,195 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285166903] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:24:52,195 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:24:52,195 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:24:52,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091864009] [2021-06-05 22:24:52,195 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:24:52,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:24:52,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:24:52,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:24:52,195 INFO L87 Difference]: Start difference. First operand 7329 states and 25744 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:24:54,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:24:54,377 INFO L93 Difference]: Finished difference Result 11739 states and 41164 transitions. [2021-06-05 22:24:54,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-06-05 22:24:54,377 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:24:54,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:24:54,398 INFO L225 Difference]: With dead ends: 11739 [2021-06-05 22:24:54,399 INFO L226 Difference]: Without dead ends: 11639 [2021-06-05 22:24:54,399 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1441 ImplicationChecksByTransitivity, 1255.3ms TimeCoverageRelationStatistics Valid=471, Invalid=4499, Unknown=0, NotChecked=0, Total=4970 [2021-06-05 22:24:54,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11639 states. [2021-06-05 22:24:54,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11639 to 7338. [2021-06-05 22:24:54,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7338 states, 7337 states have (on average 3.511789559765572) internal successors, (25766), 7337 states have internal predecessors, (25766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:24:54,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7338 states to 7338 states and 25766 transitions. [2021-06-05 22:24:54,547 INFO L78 Accepts]: Start accepts. Automaton has 7338 states and 25766 transitions. Word has length 47 [2021-06-05 22:24:54,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:24:54,547 INFO L482 AbstractCegarLoop]: Abstraction has 7338 states and 25766 transitions. [2021-06-05 22:24:54,547 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:24:54,547 INFO L276 IsEmpty]: Start isEmpty. Operand 7338 states and 25766 transitions. [2021-06-05 22:24:54,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:24:54,558 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:24:54,558 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:24:54,558 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2021-06-05 22:24:54,558 INFO L430 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:24:54,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:24:54,558 INFO L82 PathProgramCache]: Analyzing trace with hash -2032289108, now seen corresponding path program 157 times [2021-06-05 22:24:54,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:24:54,559 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537030931] [2021-06-05 22:24:54,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:24:54,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:24:54,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:24:54,750 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:24:54,751 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537030931] [2021-06-05 22:24:54,751 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537030931] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:24:54,751 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:24:54,751 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:24:54,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568576137] [2021-06-05 22:24:54,751 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:24:54,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:24:54,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:24:54,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:24:54,751 INFO L87 Difference]: Start difference. First operand 7338 states and 25766 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:24:58,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:24:58,403 INFO L93 Difference]: Finished difference Result 13320 states and 46717 transitions. [2021-06-05 22:24:58,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-06-05 22:24:58,404 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:24:58,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:24:58,431 INFO L225 Difference]: With dead ends: 13320 [2021-06-05 22:24:58,431 INFO L226 Difference]: Without dead ends: 13178 [2021-06-05 22:24:58,432 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3515 ImplicationChecksByTransitivity, 2160.2ms TimeCoverageRelationStatistics Valid=887, Invalid=9619, Unknown=0, NotChecked=0, Total=10506 [2021-06-05 22:24:58,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13178 states. [2021-06-05 22:24:58,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13178 to 7329. [2021-06-05 22:24:58,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7329 states, 7328 states have (on average 3.5141921397379914) internal successors, (25752), 7328 states have internal predecessors, (25752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:24:58,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7329 states to 7329 states and 25752 transitions. [2021-06-05 22:24:58,585 INFO L78 Accepts]: Start accepts. Automaton has 7329 states and 25752 transitions. Word has length 47 [2021-06-05 22:24:58,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:24:58,585 INFO L482 AbstractCegarLoop]: Abstraction has 7329 states and 25752 transitions. [2021-06-05 22:24:58,585 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:24:58,585 INFO L276 IsEmpty]: Start isEmpty. Operand 7329 states and 25752 transitions. [2021-06-05 22:24:58,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:24:58,595 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:24:58,595 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:24:58,596 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2021-06-05 22:24:58,596 INFO L430 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:24:58,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:24:58,596 INFO L82 PathProgramCache]: Analyzing trace with hash 230397002, now seen corresponding path program 158 times [2021-06-05 22:24:58,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:24:58,596 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864908082] [2021-06-05 22:24:58,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:24:58,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:24:58,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:24:58,761 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:24:58,761 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864908082] [2021-06-05 22:24:58,761 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864908082] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:24:58,761 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:24:58,762 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:24:58,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145384655] [2021-06-05 22:24:58,762 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:24:58,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:24:58,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:24:58,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:24:58,762 INFO L87 Difference]: Start difference. First operand 7329 states and 25752 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:25:01,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:25:01,554 INFO L93 Difference]: Finished difference Result 11833 states and 41364 transitions. [2021-06-05 22:25:01,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-06-05 22:25:01,554 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:25:01,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:25:01,575 INFO L225 Difference]: With dead ends: 11833 [2021-06-05 22:25:01,575 INFO L226 Difference]: Without dead ends: 11696 [2021-06-05 22:25:01,576 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1776 ImplicationChecksByTransitivity, 1454.3ms TimeCoverageRelationStatistics Valid=522, Invalid=5330, Unknown=0, NotChecked=0, Total=5852 [2021-06-05 22:25:01,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11696 states. [2021-06-05 22:25:01,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11696 to 7365. [2021-06-05 22:25:01,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7365 states, 7364 states have (on average 3.509234111895709) internal successors, (25842), 7364 states have internal predecessors, (25842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:25:01,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7365 states to 7365 states and 25842 transitions. [2021-06-05 22:25:01,723 INFO L78 Accepts]: Start accepts. Automaton has 7365 states and 25842 transitions. Word has length 47 [2021-06-05 22:25:01,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:25:01,723 INFO L482 AbstractCegarLoop]: Abstraction has 7365 states and 25842 transitions. [2021-06-05 22:25:01,723 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:25:01,723 INFO L276 IsEmpty]: Start isEmpty. Operand 7365 states and 25842 transitions. [2021-06-05 22:25:01,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:25:01,734 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:25:01,734 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:25:01,734 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2021-06-05 22:25:01,734 INFO L430 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:25:01,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:25:01,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1864990730, now seen corresponding path program 159 times [2021-06-05 22:25:01,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:25:01,734 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800282498] [2021-06-05 22:25:01,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:25:01,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:25:01,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:25:01,926 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:25:01,926 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800282498] [2021-06-05 22:25:01,926 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800282498] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:25:01,926 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:25:01,926 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:25:01,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196598306] [2021-06-05 22:25:01,926 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:25:01,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:25:01,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:25:01,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:25:01,926 INFO L87 Difference]: Start difference. First operand 7365 states and 25842 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:25:05,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:25:05,419 INFO L93 Difference]: Finished difference Result 12448 states and 43499 transitions. [2021-06-05 22:25:05,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-06-05 22:25:05,419 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:25:05,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:25:05,445 INFO L225 Difference]: With dead ends: 12448 [2021-06-05 22:25:05,445 INFO L226 Difference]: Without dead ends: 12308 [2021-06-05 22:25:05,446 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2991 ImplicationChecksByTransitivity, 1990.0ms TimeCoverageRelationStatistics Valid=738, Invalid=8382, Unknown=0, NotChecked=0, Total=9120 [2021-06-05 22:25:05,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12308 states. [2021-06-05 22:25:05,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12308 to 7347. [2021-06-05 22:25:05,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7347 states, 7346 states have (on average 3.510890280424721) internal successors, (25791), 7346 states have internal predecessors, (25791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:25:05,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7347 states to 7347 states and 25791 transitions. [2021-06-05 22:25:05,605 INFO L78 Accepts]: Start accepts. Automaton has 7347 states and 25791 transitions. Word has length 47 [2021-06-05 22:25:05,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:25:05,605 INFO L482 AbstractCegarLoop]: Abstraction has 7347 states and 25791 transitions. [2021-06-05 22:25:05,605 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:25:05,605 INFO L276 IsEmpty]: Start isEmpty. Operand 7347 states and 25791 transitions. [2021-06-05 22:25:05,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:25:05,616 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:25:05,616 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:25:05,616 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2021-06-05 22:25:05,616 INFO L430 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:25:05,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:25:05,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1431966188, now seen corresponding path program 160 times [2021-06-05 22:25:05,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:25:05,616 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042789490] [2021-06-05 22:25:05,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:25:05,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:25:05,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:25:05,836 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:25:05,836 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042789490] [2021-06-05 22:25:05,836 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042789490] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:25:05,837 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:25:05,837 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:25:05,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288659484] [2021-06-05 22:25:05,837 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:25:05,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:25:05,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:25:05,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:25:05,837 INFO L87 Difference]: Start difference. First operand 7347 states and 25791 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:25:10,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:25:10,037 INFO L93 Difference]: Finished difference Result 13400 states and 47109 transitions. [2021-06-05 22:25:10,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-06-05 22:25:10,038 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:25:10,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:25:10,066 INFO L225 Difference]: With dead ends: 13400 [2021-06-05 22:25:10,067 INFO L226 Difference]: Without dead ends: 13263 [2021-06-05 22:25:10,068 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3560 ImplicationChecksByTransitivity, 2544.6ms TimeCoverageRelationStatistics Valid=862, Invalid=9644, Unknown=0, NotChecked=0, Total=10506 [2021-06-05 22:25:10,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13263 states. [2021-06-05 22:25:10,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13263 to 7496. [2021-06-05 22:25:10,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7496 states, 7495 states have (on average 3.5179452968645766) internal successors, (26367), 7495 states have internal predecessors, (26367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:25:10,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7496 states to 7496 states and 26367 transitions. [2021-06-05 22:25:10,287 INFO L78 Accepts]: Start accepts. Automaton has 7496 states and 26367 transitions. Word has length 47 [2021-06-05 22:25:10,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:25:10,287 INFO L482 AbstractCegarLoop]: Abstraction has 7496 states and 26367 transitions. [2021-06-05 22:25:10,287 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:25:10,287 INFO L276 IsEmpty]: Start isEmpty. Operand 7496 states and 26367 transitions. [2021-06-05 22:25:10,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:25:10,298 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:25:10,298 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:25:10,298 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2021-06-05 22:25:10,298 INFO L430 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:25:10,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:25:10,299 INFO L82 PathProgramCache]: Analyzing trace with hash 581314280, now seen corresponding path program 161 times [2021-06-05 22:25:10,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:25:10,299 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38621962] [2021-06-05 22:25:10,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:25:10,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:25:10,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:25:10,484 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:25:10,484 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38621962] [2021-06-05 22:25:10,484 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38621962] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:25:10,484 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:25:10,484 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:25:10,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130745213] [2021-06-05 22:25:10,484 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:25:10,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:25:10,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:25:10,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:25:10,485 INFO L87 Difference]: Start difference. First operand 7496 states and 26367 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:25:11,058 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 18 [2021-06-05 22:25:14,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:25:14,549 INFO L93 Difference]: Finished difference Result 13625 states and 47957 transitions. [2021-06-05 22:25:14,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-06-05 22:25:14,549 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:25:14,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:25:14,576 INFO L225 Difference]: With dead ends: 13625 [2021-06-05 22:25:14,576 INFO L226 Difference]: Without dead ends: 13365 [2021-06-05 22:25:14,577 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3313 ImplicationChecksByTransitivity, 2485.8ms TimeCoverageRelationStatistics Valid=816, Invalid=9084, Unknown=0, NotChecked=0, Total=9900 [2021-06-05 22:25:14,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13365 states. [2021-06-05 22:25:14,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13365 to 7367. [2021-06-05 22:25:14,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7367 states, 7366 states have (on average 3.5116752647298397) internal successors, (25867), 7366 states have internal predecessors, (25867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:25:14,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7367 states to 7367 states and 25867 transitions. [2021-06-05 22:25:14,744 INFO L78 Accepts]: Start accepts. Automaton has 7367 states and 25867 transitions. Word has length 47 [2021-06-05 22:25:14,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:25:14,745 INFO L482 AbstractCegarLoop]: Abstraction has 7367 states and 25867 transitions. [2021-06-05 22:25:14,745 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:25:14,745 INFO L276 IsEmpty]: Start isEmpty. Operand 7367 states and 25867 transitions. [2021-06-05 22:25:14,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:25:14,756 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:25:14,756 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:25:14,756 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2021-06-05 22:25:14,756 INFO L430 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:25:14,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:25:14,756 INFO L82 PathProgramCache]: Analyzing trace with hash -508056242, now seen corresponding path program 162 times [2021-06-05 22:25:14,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:25:14,756 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920700816] [2021-06-05 22:25:14,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:25:14,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:25:14,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:25:14,956 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:25:14,956 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920700816] [2021-06-05 22:25:14,956 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920700816] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:25:14,956 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:25:14,956 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:25:14,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151189320] [2021-06-05 22:25:14,957 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:25:14,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:25:14,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:25:14,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:25:14,957 INFO L87 Difference]: Start difference. First operand 7367 states and 25867 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:25:18,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:25:18,839 INFO L93 Difference]: Finished difference Result 14353 states and 50433 transitions. [2021-06-05 22:25:18,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-06-05 22:25:18,839 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:25:18,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:25:18,867 INFO L225 Difference]: With dead ends: 14353 [2021-06-05 22:25:18,867 INFO L226 Difference]: Without dead ends: 14231 [2021-06-05 22:25:18,868 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3800 ImplicationChecksByTransitivity, 2213.9ms TimeCoverageRelationStatistics Valid=871, Invalid=10259, Unknown=0, NotChecked=0, Total=11130 [2021-06-05 22:25:18,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14231 states. [2021-06-05 22:25:19,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14231 to 7367. [2021-06-05 22:25:19,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7367 states, 7366 states have (on average 3.5116752647298397) internal successors, (25867), 7366 states have internal predecessors, (25867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:25:19,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7367 states to 7367 states and 25867 transitions. [2021-06-05 22:25:19,041 INFO L78 Accepts]: Start accepts. Automaton has 7367 states and 25867 transitions. Word has length 47 [2021-06-05 22:25:19,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:25:19,041 INFO L482 AbstractCegarLoop]: Abstraction has 7367 states and 25867 transitions. [2021-06-05 22:25:19,041 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:25:19,041 INFO L276 IsEmpty]: Start isEmpty. Operand 7367 states and 25867 transitions. [2021-06-05 22:25:19,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:25:19,052 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:25:19,052 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:25:19,052 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2021-06-05 22:25:19,052 INFO L430 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:25:19,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:25:19,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1671755190, now seen corresponding path program 163 times [2021-06-05 22:25:19,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:25:19,053 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370694565] [2021-06-05 22:25:19,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:25:19,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:25:19,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:25:19,269 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:25:19,269 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370694565] [2021-06-05 22:25:19,269 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370694565] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:25:19,269 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:25:19,269 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:25:19,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750603910] [2021-06-05 22:25:19,269 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:25:19,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:25:19,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:25:19,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:25:19,269 INFO L87 Difference]: Start difference. First operand 7367 states and 25867 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:25:23,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:25:23,555 INFO L93 Difference]: Finished difference Result 14566 states and 51171 transitions. [2021-06-05 22:25:23,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2021-06-05 22:25:23,555 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:25:23,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:25:23,582 INFO L225 Difference]: With dead ends: 14566 [2021-06-05 22:25:23,582 INFO L226 Difference]: Without dead ends: 14451 [2021-06-05 22:25:23,583 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4335 ImplicationChecksByTransitivity, 2609.0ms TimeCoverageRelationStatistics Valid=987, Invalid=11445, Unknown=0, NotChecked=0, Total=12432 [2021-06-05 22:25:23,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14451 states. [2021-06-05 22:25:23,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14451 to 7409. [2021-06-05 22:25:23,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7409 states, 7408 states have (on average 3.511744060475162) internal successors, (26015), 7408 states have internal predecessors, (26015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:25:23,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7409 states to 7409 states and 26015 transitions. [2021-06-05 22:25:23,754 INFO L78 Accepts]: Start accepts. Automaton has 7409 states and 26015 transitions. Word has length 47 [2021-06-05 22:25:23,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:25:23,754 INFO L482 AbstractCegarLoop]: Abstraction has 7409 states and 26015 transitions. [2021-06-05 22:25:23,754 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:25:23,754 INFO L276 IsEmpty]: Start isEmpty. Operand 7409 states and 26015 transitions. [2021-06-05 22:25:23,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:25:23,765 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:25:23,765 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:25:23,765 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2021-06-05 22:25:23,765 INFO L430 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:25:23,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:25:23,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1170181864, now seen corresponding path program 164 times [2021-06-05 22:25:23,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:25:23,765 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476748665] [2021-06-05 22:25:23,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:25:23,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:25:23,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:25:23,947 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:25:23,947 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476748665] [2021-06-05 22:25:23,947 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476748665] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:25:23,947 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:25:23,947 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:25:23,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312520707] [2021-06-05 22:25:23,948 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:25:23,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:25:23,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:25:23,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:25:23,948 INFO L87 Difference]: Start difference. First operand 7409 states and 26015 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:25:26,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:25:26,189 INFO L93 Difference]: Finished difference Result 11320 states and 39731 transitions. [2021-06-05 22:25:26,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-05 22:25:26,189 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:25:26,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:25:26,210 INFO L225 Difference]: With dead ends: 11320 [2021-06-05 22:25:26,210 INFO L226 Difference]: Without dead ends: 11220 [2021-06-05 22:25:26,210 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1269 ImplicationChecksByTransitivity, 1237.2ms TimeCoverageRelationStatistics Valid=438, Invalid=4118, Unknown=0, NotChecked=0, Total=4556 [2021-06-05 22:25:26,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11220 states. [2021-06-05 22:25:26,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11220 to 7418. [2021-06-05 22:25:26,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7418 states, 7417 states have (on average 3.5104489685856817) internal successors, (26037), 7417 states have internal predecessors, (26037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:25:26,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7418 states to 7418 states and 26037 transitions. [2021-06-05 22:25:26,358 INFO L78 Accepts]: Start accepts. Automaton has 7418 states and 26037 transitions. Word has length 47 [2021-06-05 22:25:26,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:25:26,359 INFO L482 AbstractCegarLoop]: Abstraction has 7418 states and 26037 transitions. [2021-06-05 22:25:26,359 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:25:26,359 INFO L276 IsEmpty]: Start isEmpty. Operand 7418 states and 26037 transitions. [2021-06-05 22:25:26,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:25:26,370 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:25:26,370 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:25:26,370 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2021-06-05 22:25:26,370 INFO L430 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:25:26,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:25:26,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1104119306, now seen corresponding path program 165 times [2021-06-05 22:25:26,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:25:26,370 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169880243] [2021-06-05 22:25:26,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:25:26,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:25:26,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:25:26,551 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:25:26,551 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169880243] [2021-06-05 22:25:26,551 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169880243] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:25:26,551 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:25:26,551 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:25:26,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300386721] [2021-06-05 22:25:26,551 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:25:26,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:25:26,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:25:26,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:25:26,552 INFO L87 Difference]: Start difference. First operand 7418 states and 26037 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:25:30,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:25:30,107 INFO L93 Difference]: Finished difference Result 12752 states and 44502 transitions. [2021-06-05 22:25:30,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-06-05 22:25:30,107 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:25:30,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:25:30,131 INFO L225 Difference]: With dead ends: 12752 [2021-06-05 22:25:30,131 INFO L226 Difference]: Without dead ends: 12367 [2021-06-05 22:25:30,132 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2942 ImplicationChecksByTransitivity, 2084.9ms TimeCoverageRelationStatistics Valid=772, Invalid=8348, Unknown=0, NotChecked=0, Total=9120 [2021-06-05 22:25:30,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12367 states. [2021-06-05 22:25:30,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12367 to 7533. [2021-06-05 22:25:30,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7533 states, 7532 states have (on average 3.5123473181094) internal successors, (26455), 7532 states have internal predecessors, (26455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:25:30,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7533 states to 7533 states and 26455 transitions. [2021-06-05 22:25:30,291 INFO L78 Accepts]: Start accepts. Automaton has 7533 states and 26455 transitions. Word has length 47 [2021-06-05 22:25:30,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:25:30,291 INFO L482 AbstractCegarLoop]: Abstraction has 7533 states and 26455 transitions. [2021-06-05 22:25:30,291 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:25:30,291 INFO L276 IsEmpty]: Start isEmpty. Operand 7533 states and 26455 transitions. [2021-06-05 22:25:30,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:25:30,302 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:25:30,302 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:25:30,302 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2021-06-05 22:25:30,302 INFO L430 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:25:30,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:25:30,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1939241354, now seen corresponding path program 166 times [2021-06-05 22:25:30,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:25:30,302 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250090893] [2021-06-05 22:25:30,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:25:30,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:25:30,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:25:30,475 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:25:30,475 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250090893] [2021-06-05 22:25:30,475 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250090893] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:25:30,475 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:25:30,475 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:25:30,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162657640] [2021-06-05 22:25:30,475 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:25:30,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:25:30,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:25:30,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:25:30,476 INFO L87 Difference]: Start difference. First operand 7533 states and 26455 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:25:33,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:25:33,396 INFO L93 Difference]: Finished difference Result 12440 states and 43725 transitions. [2021-06-05 22:25:33,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-06-05 22:25:33,396 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:25:33,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:25:33,418 INFO L225 Difference]: With dead ends: 12440 [2021-06-05 22:25:33,418 INFO L226 Difference]: Without dead ends: 12207 [2021-06-05 22:25:33,419 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2174 ImplicationChecksByTransitivity, 1638.6ms TimeCoverageRelationStatistics Valid=617, Invalid=6355, Unknown=0, NotChecked=0, Total=6972 [2021-06-05 22:25:33,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12207 states. [2021-06-05 22:25:33,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12207 to 7643. [2021-06-05 22:25:33,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7643 states, 7642 states have (on average 3.51086103114368) internal successors, (26830), 7642 states have internal predecessors, (26830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:25:33,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7643 states to 7643 states and 26830 transitions. [2021-06-05 22:25:33,571 INFO L78 Accepts]: Start accepts. Automaton has 7643 states and 26830 transitions. Word has length 47 [2021-06-05 22:25:33,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:25:33,571 INFO L482 AbstractCegarLoop]: Abstraction has 7643 states and 26830 transitions. [2021-06-05 22:25:33,571 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:25:33,571 INFO L276 IsEmpty]: Start isEmpty. Operand 7643 states and 26830 transitions. [2021-06-05 22:25:33,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:25:33,582 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:25:33,582 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:25:33,582 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2021-06-05 22:25:33,582 INFO L430 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:25:33,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:25:33,582 INFO L82 PathProgramCache]: Analyzing trace with hash 588492750, now seen corresponding path program 167 times [2021-06-05 22:25:33,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:25:33,582 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469652348] [2021-06-05 22:25:33,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:25:33,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:25:33,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:25:33,788 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:25:33,788 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469652348] [2021-06-05 22:25:33,788 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469652348] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:25:33,788 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:25:33,788 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:25:33,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684659266] [2021-06-05 22:25:33,788 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:25:33,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:25:33,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:25:33,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:25:33,789 INFO L87 Difference]: Start difference. First operand 7643 states and 26830 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:25:37,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:25:37,702 INFO L93 Difference]: Finished difference Result 13721 states and 48302 transitions. [2021-06-05 22:25:37,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-06-05 22:25:37,703 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:25:37,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:25:37,729 INFO L225 Difference]: With dead ends: 13721 [2021-06-05 22:25:37,729 INFO L226 Difference]: Without dead ends: 13526 [2021-06-05 22:25:37,730 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3786 ImplicationChecksByTransitivity, 2453.9ms TimeCoverageRelationStatistics Valid=942, Invalid=9978, Unknown=0, NotChecked=0, Total=10920 [2021-06-05 22:25:37,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13526 states. [2021-06-05 22:25:37,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13526 to 7823. [2021-06-05 22:25:37,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7823 states, 7822 states have (on average 3.5175147021222193) internal successors, (27514), 7822 states have internal predecessors, (27514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:25:37,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7823 states to 7823 states and 27514 transitions. [2021-06-05 22:25:37,896 INFO L78 Accepts]: Start accepts. Automaton has 7823 states and 27514 transitions. Word has length 47 [2021-06-05 22:25:37,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:25:37,896 INFO L482 AbstractCegarLoop]: Abstraction has 7823 states and 27514 transitions. [2021-06-05 22:25:37,896 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:25:37,896 INFO L276 IsEmpty]: Start isEmpty. Operand 7823 states and 27514 transitions. [2021-06-05 22:25:37,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:25:37,908 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:25:37,908 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:25:37,908 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2021-06-05 22:25:37,908 INFO L430 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:25:37,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:25:37,908 INFO L82 PathProgramCache]: Analyzing trace with hash -262159158, now seen corresponding path program 168 times [2021-06-05 22:25:37,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:25:37,908 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813903808] [2021-06-05 22:25:37,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:25:37,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:25:38,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:25:38,068 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:25:38,068 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813903808] [2021-06-05 22:25:38,068 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813903808] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:25:38,069 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:25:38,069 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:25:38,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285707613] [2021-06-05 22:25:38,069 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:25:38,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:25:38,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:25:38,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:25:38,069 INFO L87 Difference]: Start difference. First operand 7823 states and 27514 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:25:42,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:25:42,900 INFO L93 Difference]: Finished difference Result 15923 states and 56409 transitions. [2021-06-05 22:25:42,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2021-06-05 22:25:42,900 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:25:42,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:25:42,931 INFO L225 Difference]: With dead ends: 15923 [2021-06-05 22:25:42,931 INFO L226 Difference]: Without dead ends: 15714 [2021-06-05 22:25:42,932 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6138 ImplicationChecksByTransitivity, 3046.1ms TimeCoverageRelationStatistics Valid=1257, Invalid=15255, Unknown=0, NotChecked=0, Total=16512 [2021-06-05 22:25:42,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15714 states. [2021-06-05 22:25:43,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15714 to 7927. [2021-06-05 22:25:43,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7927 states, 7926 states have (on average 3.5170325510976532) internal successors, (27876), 7926 states have internal predecessors, (27876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:25:43,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7927 states to 7927 states and 27876 transitions. [2021-06-05 22:25:43,105 INFO L78 Accepts]: Start accepts. Automaton has 7927 states and 27876 transitions. Word has length 47 [2021-06-05 22:25:43,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:25:43,105 INFO L482 AbstractCegarLoop]: Abstraction has 7927 states and 27876 transitions. [2021-06-05 22:25:43,105 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:25:43,105 INFO L276 IsEmpty]: Start isEmpty. Operand 7927 states and 27876 transitions. [2021-06-05 22:25:43,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:25:43,116 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:25:43,116 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:25:43,116 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2021-06-05 22:25:43,116 INFO L430 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:25:43,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:25:43,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1913648394, now seen corresponding path program 169 times [2021-06-05 22:25:43,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:25:43,117 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707173966] [2021-06-05 22:25:43,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:25:43,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:25:43,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:25:43,274 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:25:43,275 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707173966] [2021-06-05 22:25:43,275 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707173966] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:25:43,275 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:25:43,275 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 22:25:43,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198667854] [2021-06-05 22:25:43,275 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 22:25:43,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:25:43,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 22:25:43,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2021-06-05 22:25:43,275 INFO L87 Difference]: Start difference. First operand 7927 states and 27876 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:25:46,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:25:46,194 INFO L93 Difference]: Finished difference Result 11868 states and 41423 transitions. [2021-06-05 22:25:46,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-06-05 22:25:46,194 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:25:46,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:25:46,215 INFO L225 Difference]: With dead ends: 11868 [2021-06-05 22:25:46,215 INFO L226 Difference]: Without dead ends: 11625 [2021-06-05 22:25:46,216 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 1 SyntacticMatches, 4 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2224 ImplicationChecksByTransitivity, 1713.5ms TimeCoverageRelationStatistics Valid=626, Invalid=6180, Unknown=0, NotChecked=0, Total=6806 [2021-06-05 22:25:46,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11625 states. [2021-06-05 22:25:46,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11625 to 8215. [2021-06-05 22:25:46,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8215 states, 8214 states have (on average 3.5175310445580714) internal successors, (28893), 8214 states have internal predecessors, (28893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:25:46,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8215 states to 8215 states and 28893 transitions. [2021-06-05 22:25:46,378 INFO L78 Accepts]: Start accepts. Automaton has 8215 states and 28893 transitions. Word has length 47 [2021-06-05 22:25:46,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:25:46,379 INFO L482 AbstractCegarLoop]: Abstraction has 8215 states and 28893 transitions. [2021-06-05 22:25:46,379 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:25:46,379 INFO L276 IsEmpty]: Start isEmpty. Operand 8215 states and 28893 transitions. [2021-06-05 22:25:46,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:25:46,391 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:25:46,391 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:25:46,391 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2021-06-05 22:25:46,392 INFO L430 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:25:46,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:25:46,392 INFO L82 PathProgramCache]: Analyzing trace with hash -65226068, now seen corresponding path program 170 times [2021-06-05 22:25:46,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:25:46,392 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886503628] [2021-06-05 22:25:46,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:25:46,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:25:46,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:25:46,557 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:25:46,557 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886503628] [2021-06-05 22:25:46,557 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886503628] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:25:46,557 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:25:46,557 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:25:46,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788928500] [2021-06-05 22:25:46,557 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:25:46,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:25:46,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:25:46,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:25:46,557 INFO L87 Difference]: Start difference. First operand 8215 states and 28893 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:25:50,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:25:50,676 INFO L93 Difference]: Finished difference Result 14645 states and 51587 transitions. [2021-06-05 22:25:50,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2021-06-05 22:25:50,676 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:25:50,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:25:50,705 INFO L225 Difference]: With dead ends: 14645 [2021-06-05 22:25:50,705 INFO L226 Difference]: Without dead ends: 14402 [2021-06-05 22:25:50,706 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4238 ImplicationChecksByTransitivity, 2519.4ms TimeCoverageRelationStatistics Valid=985, Invalid=11005, Unknown=0, NotChecked=0, Total=11990 [2021-06-05 22:25:50,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14402 states. [2021-06-05 22:25:50,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14402 to 8211. [2021-06-05 22:25:50,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8211 states, 8210 states have (on average 3.5266747868453105) internal successors, (28954), 8210 states have internal predecessors, (28954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:25:50,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8211 states to 8211 states and 28954 transitions. [2021-06-05 22:25:50,876 INFO L78 Accepts]: Start accepts. Automaton has 8211 states and 28954 transitions. Word has length 47 [2021-06-05 22:25:50,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:25:50,876 INFO L482 AbstractCegarLoop]: Abstraction has 8211 states and 28954 transitions. [2021-06-05 22:25:50,876 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:25:50,876 INFO L276 IsEmpty]: Start isEmpty. Operand 8211 states and 28954 transitions. [2021-06-05 22:25:50,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:25:50,888 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:25:50,888 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:25:50,888 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2021-06-05 22:25:50,888 INFO L430 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:25:50,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:25:50,888 INFO L82 PathProgramCache]: Analyzing trace with hash -915877976, now seen corresponding path program 171 times [2021-06-05 22:25:50,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:25:50,888 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900413851] [2021-06-05 22:25:50,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:25:50,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:25:51,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:25:51,087 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:25:51,087 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900413851] [2021-06-05 22:25:51,087 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900413851] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:25:51,087 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:25:51,087 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:25:51,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741304034] [2021-06-05 22:25:51,088 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:25:51,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:25:51,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:25:51,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:25:51,088 INFO L87 Difference]: Start difference. First operand 8211 states and 28954 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:25:55,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:25:55,581 INFO L93 Difference]: Finished difference Result 15299 states and 54095 transitions. [2021-06-05 22:25:55,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2021-06-05 22:25:55,581 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:25:55,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:25:55,609 INFO L225 Difference]: With dead ends: 15299 [2021-06-05 22:25:55,609 INFO L226 Difference]: Without dead ends: 14982 [2021-06-05 22:25:55,610 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5293 ImplicationChecksByTransitivity, 2835.2ms TimeCoverageRelationStatistics Valid=1124, Invalid=13396, Unknown=0, NotChecked=0, Total=14520 [2021-06-05 22:25:55,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14982 states. [2021-06-05 22:25:55,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14982 to 7895. [2021-06-05 22:25:55,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7895 states, 7894 states have (on average 3.5249556625285026) internal successors, (27826), 7894 states have internal predecessors, (27826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:25:55,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7895 states to 7895 states and 27826 transitions. [2021-06-05 22:25:55,782 INFO L78 Accepts]: Start accepts. Automaton has 7895 states and 27826 transitions. Word has length 47 [2021-06-05 22:25:55,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:25:55,782 INFO L482 AbstractCegarLoop]: Abstraction has 7895 states and 27826 transitions. [2021-06-05 22:25:55,782 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:25:55,782 INFO L276 IsEmpty]: Start isEmpty. Operand 7895 states and 27826 transitions. [2021-06-05 22:25:55,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:25:55,793 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:25:55,793 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:25:55,794 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2021-06-05 22:25:55,794 INFO L430 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:25:55,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:25:55,794 INFO L82 PathProgramCache]: Analyzing trace with hash -493032532, now seen corresponding path program 172 times [2021-06-05 22:25:55,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:25:55,794 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812602129] [2021-06-05 22:25:55,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:25:55,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:25:55,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:25:55,996 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:25:55,996 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812602129] [2021-06-05 22:25:55,996 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812602129] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:25:55,996 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:25:55,996 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:25:55,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875434175] [2021-06-05 22:25:55,996 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:25:55,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:25:55,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:25:55,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:25:55,997 INFO L87 Difference]: Start difference. First operand 7895 states and 27826 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:25:59,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:25:59,235 INFO L93 Difference]: Finished difference Result 13242 states and 46560 transitions. [2021-06-05 22:25:59,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-06-05 22:25:59,236 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:25:59,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:25:59,261 INFO L225 Difference]: With dead ends: 13242 [2021-06-05 22:25:59,261 INFO L226 Difference]: Without dead ends: 13115 [2021-06-05 22:25:59,262 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2722 ImplicationChecksByTransitivity, 1855.3ms TimeCoverageRelationStatistics Valid=709, Invalid=7847, Unknown=0, NotChecked=0, Total=8556 [2021-06-05 22:25:59,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13115 states. [2021-06-05 22:25:59,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13115 to 7909. [2021-06-05 22:25:59,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7909 states, 7908 states have (on average 3.5235204855842186) internal successors, (27864), 7908 states have internal predecessors, (27864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:25:59,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7909 states to 7909 states and 27864 transitions. [2021-06-05 22:25:59,423 INFO L78 Accepts]: Start accepts. Automaton has 7909 states and 27864 transitions. Word has length 47 [2021-06-05 22:25:59,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:25:59,423 INFO L482 AbstractCegarLoop]: Abstraction has 7909 states and 27864 transitions. [2021-06-05 22:25:59,423 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:25:59,423 INFO L276 IsEmpty]: Start isEmpty. Operand 7909 states and 27864 transitions. [2021-06-05 22:25:59,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:25:59,434 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:25:59,434 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:25:59,434 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2021-06-05 22:25:59,434 INFO L430 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:25:59,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:25:59,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1843781136, now seen corresponding path program 173 times [2021-06-05 22:25:59,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:25:59,435 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644286550] [2021-06-05 22:25:59,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:25:59,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:25:59,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:25:59,678 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:25:59,679 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644286550] [2021-06-05 22:25:59,679 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644286550] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:25:59,679 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:25:59,679 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:25:59,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433816228] [2021-06-05 22:25:59,679 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:25:59,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:25:59,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:25:59,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:25:59,679 INFO L87 Difference]: Start difference. First operand 7909 states and 27864 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:03,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:26:03,733 INFO L93 Difference]: Finished difference Result 14419 states and 50788 transitions. [2021-06-05 22:26:03,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2021-06-05 22:26:03,733 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:26:03,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:26:03,761 INFO L225 Difference]: With dead ends: 14419 [2021-06-05 22:26:03,761 INFO L226 Difference]: Without dead ends: 14330 [2021-06-05 22:26:03,762 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4322 ImplicationChecksByTransitivity, 2564.0ms TimeCoverageRelationStatistics Valid=1025, Invalid=11407, Unknown=0, NotChecked=0, Total=12432 [2021-06-05 22:26:03,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14330 states. [2021-06-05 22:26:03,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14330 to 7917. [2021-06-05 22:26:03,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7917 states, 7916 states have (on average 3.5237493683678625) internal successors, (27894), 7916 states have internal predecessors, (27894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:03,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7917 states to 7917 states and 27894 transitions. [2021-06-05 22:26:03,931 INFO L78 Accepts]: Start accepts. Automaton has 7917 states and 27894 transitions. Word has length 47 [2021-06-05 22:26:03,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:26:03,931 INFO L482 AbstractCegarLoop]: Abstraction has 7917 states and 27894 transitions. [2021-06-05 22:26:03,931 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:03,931 INFO L276 IsEmpty]: Start isEmpty. Operand 7917 states and 27894 transitions. [2021-06-05 22:26:03,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:26:03,943 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:26:03,943 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:26:03,943 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2021-06-05 22:26:03,943 INFO L430 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:26:03,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:26:03,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1600534252, now seen corresponding path program 174 times [2021-06-05 22:26:03,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:26:03,943 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939194649] [2021-06-05 22:26:03,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:26:03,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:26:04,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:26:04,124 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:26:04,124 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939194649] [2021-06-05 22:26:04,124 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939194649] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:26:04,124 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:26:04,124 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:26:04,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149958195] [2021-06-05 22:26:04,124 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:26:04,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:26:04,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:26:04,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:26:04,124 INFO L87 Difference]: Start difference. First operand 7917 states and 27894 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:09,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:26:09,509 INFO L93 Difference]: Finished difference Result 16386 states and 58025 transitions. [2021-06-05 22:26:09,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2021-06-05 22:26:09,509 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:26:09,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:26:09,541 INFO L225 Difference]: With dead ends: 16386 [2021-06-05 22:26:09,542 INFO L226 Difference]: Without dead ends: 16283 [2021-06-05 22:26:09,543 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7528 ImplicationChecksByTransitivity, 3340.9ms TimeCoverageRelationStatistics Valid=1451, Invalid=18571, Unknown=0, NotChecked=0, Total=20022 [2021-06-05 22:26:09,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16283 states. [2021-06-05 22:26:09,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16283 to 7923. [2021-06-05 22:26:09,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7923 states, 7922 states have (on average 3.52511991921232) internal successors, (27926), 7922 states have internal predecessors, (27926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:09,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7923 states to 7923 states and 27926 transitions. [2021-06-05 22:26:09,727 INFO L78 Accepts]: Start accepts. Automaton has 7923 states and 27926 transitions. Word has length 47 [2021-06-05 22:26:09,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:26:09,727 INFO L482 AbstractCegarLoop]: Abstraction has 7923 states and 27926 transitions. [2021-06-05 22:26:09,727 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:09,727 INFO L276 IsEmpty]: Start isEmpty. Operand 7923 states and 27926 transitions. [2021-06-05 22:26:09,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:26:09,739 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:26:09,739 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:26:09,739 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2021-06-05 22:26:09,739 INFO L430 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:26:09,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:26:09,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1048890826, now seen corresponding path program 175 times [2021-06-05 22:26:09,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:26:09,739 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761726852] [2021-06-05 22:26:09,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:26:09,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:26:09,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:26:09,913 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:26:09,913 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761726852] [2021-06-05 22:26:09,913 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761726852] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:26:09,913 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:26:09,913 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:26:09,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838394700] [2021-06-05 22:26:09,914 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:26:09,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:26:09,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:26:09,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:26:09,914 INFO L87 Difference]: Start difference. First operand 7923 states and 27926 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:12,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:26:12,687 INFO L93 Difference]: Finished difference Result 12451 states and 43758 transitions. [2021-06-05 22:26:12,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-06-05 22:26:12,687 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:26:12,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:26:12,710 INFO L225 Difference]: With dead ends: 12451 [2021-06-05 22:26:12,711 INFO L226 Difference]: Without dead ends: 12324 [2021-06-05 22:26:12,711 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1927 ImplicationChecksByTransitivity, 1522.4ms TimeCoverageRelationStatistics Valid=565, Invalid=5915, Unknown=0, NotChecked=0, Total=6480 [2021-06-05 22:26:12,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12324 states. [2021-06-05 22:26:12,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12324 to 7939. [2021-06-05 22:26:12,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7939 states, 7938 states have (on average 3.5230536659108087) internal successors, (27966), 7938 states have internal predecessors, (27966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:12,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7939 states to 7939 states and 27966 transitions. [2021-06-05 22:26:12,866 INFO L78 Accepts]: Start accepts. Automaton has 7939 states and 27966 transitions. Word has length 47 [2021-06-05 22:26:12,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:26:12,867 INFO L482 AbstractCegarLoop]: Abstraction has 7939 states and 27966 transitions. [2021-06-05 22:26:12,867 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:12,867 INFO L276 IsEmpty]: Start isEmpty. Operand 7939 states and 27966 transitions. [2021-06-05 22:26:12,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:26:12,878 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:26:12,878 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:26:12,878 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2021-06-05 22:26:12,879 INFO L430 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:26:12,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:26:12,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1418705210, now seen corresponding path program 176 times [2021-06-05 22:26:12,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:26:12,879 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546851463] [2021-06-05 22:26:12,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:26:12,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:26:13,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:26:13,049 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:26:13,049 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546851463] [2021-06-05 22:26:13,049 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546851463] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:26:13,049 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:26:13,050 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:26:13,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265786417] [2021-06-05 22:26:13,050 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:26:13,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:26:13,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:26:13,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:26:13,050 INFO L87 Difference]: Start difference. First operand 7939 states and 27966 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:14,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:26:14,727 INFO L93 Difference]: Finished difference Result 10213 states and 35694 transitions. [2021-06-05 22:26:14,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 22:26:14,727 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:26:14,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:26:14,745 INFO L225 Difference]: With dead ends: 10213 [2021-06-05 22:26:14,746 INFO L226 Difference]: Without dead ends: 10116 [2021-06-05 22:26:14,746 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 920 ImplicationChecksByTransitivity, 989.8ms TimeCoverageRelationStatistics Valid=331, Invalid=3209, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 22:26:14,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10116 states. [2021-06-05 22:26:14,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10116 to 7945. [2021-06-05 22:26:14,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7945 states, 7944 states have (on average 3.522280966767372) internal successors, (27981), 7944 states have internal predecessors, (27981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:14,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7945 states to 7945 states and 27981 transitions. [2021-06-05 22:26:14,889 INFO L78 Accepts]: Start accepts. Automaton has 7945 states and 27981 transitions. Word has length 47 [2021-06-05 22:26:14,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:26:14,889 INFO L482 AbstractCegarLoop]: Abstraction has 7945 states and 27981 transitions. [2021-06-05 22:26:14,889 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:14,889 INFO L276 IsEmpty]: Start isEmpty. Operand 7945 states and 27981 transitions. [2021-06-05 22:26:14,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:26:14,901 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:26:14,901 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:26:14,901 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2021-06-05 22:26:14,901 INFO L430 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:26:14,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:26:14,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1416031384, now seen corresponding path program 177 times [2021-06-05 22:26:14,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:26:14,901 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338506273] [2021-06-05 22:26:14,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:26:14,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:26:15,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:26:15,075 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:26:15,075 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338506273] [2021-06-05 22:26:15,075 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338506273] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:26:15,076 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:26:15,076 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:26:15,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167527686] [2021-06-05 22:26:15,076 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:26:15,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:26:15,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:26:15,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:26:15,076 INFO L87 Difference]: Start difference. First operand 7945 states and 27981 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:18,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:26:18,107 INFO L93 Difference]: Finished difference Result 11804 states and 41393 transitions. [2021-06-05 22:26:18,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-06-05 22:26:18,107 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:26:18,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:26:18,129 INFO L225 Difference]: With dead ends: 11804 [2021-06-05 22:26:18,129 INFO L226 Difference]: Without dead ends: 11695 [2021-06-05 22:26:18,130 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2735 ImplicationChecksByTransitivity, 1894.9ms TimeCoverageRelationStatistics Valid=808, Invalid=7748, Unknown=0, NotChecked=0, Total=8556 [2021-06-05 22:26:18,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11695 states. [2021-06-05 22:26:18,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11695 to 7927. [2021-06-05 22:26:18,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7927 states, 7926 states have (on average 3.52409790562705) internal successors, (27932), 7926 states have internal predecessors, (27932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:18,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7927 states to 7927 states and 27932 transitions. [2021-06-05 22:26:18,292 INFO L78 Accepts]: Start accepts. Automaton has 7927 states and 27932 transitions. Word has length 47 [2021-06-05 22:26:18,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:26:18,292 INFO L482 AbstractCegarLoop]: Abstraction has 7927 states and 27932 transitions. [2021-06-05 22:26:18,292 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:18,292 INFO L276 IsEmpty]: Start isEmpty. Operand 7927 states and 27932 transitions. [2021-06-05 22:26:18,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:26:18,304 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:26:18,304 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:26:18,304 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2021-06-05 22:26:18,304 INFO L430 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:26:18,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:26:18,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1570464240, now seen corresponding path program 178 times [2021-06-05 22:26:18,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:26:18,304 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646734404] [2021-06-05 22:26:18,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:26:18,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:26:18,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:26:18,484 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:26:18,484 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646734404] [2021-06-05 22:26:18,484 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646734404] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:26:18,484 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:26:18,484 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:26:18,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335848937] [2021-06-05 22:26:18,485 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:26:18,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:26:18,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:26:18,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:26:18,485 INFO L87 Difference]: Start difference. First operand 7927 states and 27932 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:20,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:26:20,796 INFO L93 Difference]: Finished difference Result 10895 states and 37971 transitions. [2021-06-05 22:26:20,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-06-05 22:26:20,796 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:26:20,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:26:20,815 INFO L225 Difference]: With dead ends: 10895 [2021-06-05 22:26:20,815 INFO L226 Difference]: Without dead ends: 10774 [2021-06-05 22:26:20,815 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1602 ImplicationChecksByTransitivity, 1318.7ms TimeCoverageRelationStatistics Valid=487, Invalid=5063, Unknown=0, NotChecked=0, Total=5550 [2021-06-05 22:26:20,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10774 states. [2021-06-05 22:26:20,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10774 to 7945. [2021-06-05 22:26:20,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7945 states, 7944 states have (on average 3.5237915407854983) internal successors, (27993), 7944 states have internal predecessors, (27993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:20,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7945 states to 7945 states and 27993 transitions. [2021-06-05 22:26:20,966 INFO L78 Accepts]: Start accepts. Automaton has 7945 states and 27993 transitions. Word has length 47 [2021-06-05 22:26:20,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:26:20,966 INFO L482 AbstractCegarLoop]: Abstraction has 7945 states and 27993 transitions. [2021-06-05 22:26:20,966 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:20,966 INFO L276 IsEmpty]: Start isEmpty. Operand 7945 states and 27993 transitions. [2021-06-05 22:26:20,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:26:20,978 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:26:20,978 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:26:20,978 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2021-06-05 22:26:20,978 INFO L430 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:26:20,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:26:20,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1153081620, now seen corresponding path program 179 times [2021-06-05 22:26:20,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:26:20,978 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811362882] [2021-06-05 22:26:20,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:26:20,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:26:21,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:26:21,154 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:26:21,154 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811362882] [2021-06-05 22:26:21,155 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811362882] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:26:21,155 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:26:21,155 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:26:21,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519903082] [2021-06-05 22:26:21,155 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:26:21,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:26:21,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:26:21,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:26:21,155 INFO L87 Difference]: Start difference. First operand 7945 states and 27993 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:25,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:26:25,870 INFO L93 Difference]: Finished difference Result 14844 states and 52008 transitions. [2021-06-05 22:26:25,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2021-06-05 22:26:25,870 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:26:25,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:26:25,898 INFO L225 Difference]: With dead ends: 14844 [2021-06-05 22:26:25,898 INFO L226 Difference]: Without dead ends: 14749 [2021-06-05 22:26:25,899 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5884 ImplicationChecksByTransitivity, 2847.8ms TimeCoverageRelationStatistics Valid=1227, Invalid=15029, Unknown=0, NotChecked=0, Total=16256 [2021-06-05 22:26:25,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14749 states. [2021-06-05 22:26:26,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14749 to 7949. [2021-06-05 22:26:26,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7949 states, 7948 states have (on average 3.523779567186714) internal successors, (28007), 7948 states have internal predecessors, (28007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:26,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7949 states to 7949 states and 28007 transitions. [2021-06-05 22:26:26,073 INFO L78 Accepts]: Start accepts. Automaton has 7949 states and 28007 transitions. Word has length 47 [2021-06-05 22:26:26,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:26:26,073 INFO L482 AbstractCegarLoop]: Abstraction has 7949 states and 28007 transitions. [2021-06-05 22:26:26,073 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:26,074 INFO L276 IsEmpty]: Start isEmpty. Operand 7949 states and 28007 transitions. [2021-06-05 22:26:26,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:26:26,085 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:26:26,085 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:26:26,085 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2021-06-05 22:26:26,085 INFO L430 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:26:26,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:26:26,085 INFO L82 PathProgramCache]: Analyzing trace with hash -854189942, now seen corresponding path program 180 times [2021-06-05 22:26:26,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:26:26,085 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026199610] [2021-06-05 22:26:26,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:26:26,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:26:26,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:26:26,257 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:26:26,257 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026199610] [2021-06-05 22:26:26,257 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026199610] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:26:26,257 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:26:26,257 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:26:26,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320972166] [2021-06-05 22:26:26,257 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:26:26,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:26:26,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:26:26,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:26:26,258 INFO L87 Difference]: Start difference. First operand 7949 states and 28007 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:28,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:26:28,015 INFO L93 Difference]: Finished difference Result 10225 states and 35738 transitions. [2021-06-05 22:26:28,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-05 22:26:28,016 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:26:28,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:26:28,034 INFO L225 Difference]: With dead ends: 10225 [2021-06-05 22:26:28,034 INFO L226 Difference]: Without dead ends: 10128 [2021-06-05 22:26:28,034 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 919 ImplicationChecksByTransitivity, 965.9ms TimeCoverageRelationStatistics Valid=340, Invalid=3200, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 22:26:28,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10128 states. [2021-06-05 22:26:28,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10128 to 7957. [2021-06-05 22:26:28,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7957 states, 7956 states have (on average 3.5224987430869783) internal successors, (28025), 7956 states have internal predecessors, (28025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:28,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7957 states to 7957 states and 28025 transitions. [2021-06-05 22:26:28,170 INFO L78 Accepts]: Start accepts. Automaton has 7957 states and 28025 transitions. Word has length 47 [2021-06-05 22:26:28,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:26:28,170 INFO L482 AbstractCegarLoop]: Abstraction has 7957 states and 28025 transitions. [2021-06-05 22:26:28,170 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:28,171 INFO L276 IsEmpty]: Start isEmpty. Operand 7957 states and 28025 transitions. [2021-06-05 22:26:28,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:26:28,182 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:26:28,182 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:26:28,182 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2021-06-05 22:26:28,182 INFO L430 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:26:28,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:26:28,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1715356844, now seen corresponding path program 181 times [2021-06-05 22:26:28,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:26:28,182 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415095157] [2021-06-05 22:26:28,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:26:28,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:26:28,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:26:28,363 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:26:28,363 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415095157] [2021-06-05 22:26:28,363 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415095157] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:26:28,363 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:26:28,363 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:26:28,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101593025] [2021-06-05 22:26:28,363 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:26:28,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:26:28,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:26:28,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:26:28,363 INFO L87 Difference]: Start difference. First operand 7957 states and 28025 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:33,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:26:33,079 INFO L93 Difference]: Finished difference Result 15322 states and 53658 transitions. [2021-06-05 22:26:33,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2021-06-05 22:26:33,080 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:26:33,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:26:33,105 INFO L225 Difference]: With dead ends: 15322 [2021-06-05 22:26:33,106 INFO L226 Difference]: Without dead ends: 15092 [2021-06-05 22:26:33,107 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6884 ImplicationChecksByTransitivity, 3129.6ms TimeCoverageRelationStatistics Valid=1516, Invalid=17116, Unknown=0, NotChecked=0, Total=18632 [2021-06-05 22:26:33,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15092 states. [2021-06-05 22:26:33,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15092 to 8232. [2021-06-05 22:26:33,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8232 states, 8231 states have (on average 3.5352934029887013) internal successors, (29099), 8231 states have internal predecessors, (29099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:33,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8232 states to 8232 states and 29099 transitions. [2021-06-05 22:26:33,266 INFO L78 Accepts]: Start accepts. Automaton has 8232 states and 29099 transitions. Word has length 47 [2021-06-05 22:26:33,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:26:33,266 INFO L482 AbstractCegarLoop]: Abstraction has 8232 states and 29099 transitions. [2021-06-05 22:26:33,266 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:33,266 INFO L276 IsEmpty]: Start isEmpty. Operand 8232 states and 29099 transitions. [2021-06-05 22:26:33,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:26:33,276 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:26:33,276 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:26:33,276 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2021-06-05 22:26:33,276 INFO L430 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:26:33,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:26:33,277 INFO L82 PathProgramCache]: Analyzing trace with hash -508999350, now seen corresponding path program 182 times [2021-06-05 22:26:33,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:26:33,277 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909925553] [2021-06-05 22:26:33,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:26:33,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:26:33,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:26:33,478 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:26:33,478 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909925553] [2021-06-05 22:26:33,478 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909925553] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:26:33,478 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:26:33,478 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:26:33,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932717818] [2021-06-05 22:26:33,478 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:26:33,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:26:33,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:26:33,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:26:33,478 INFO L87 Difference]: Start difference. First operand 8232 states and 29099 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:35,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:26:35,438 INFO L93 Difference]: Finished difference Result 10831 states and 38019 transitions. [2021-06-05 22:26:35,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-05 22:26:35,438 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:26:35,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:26:35,457 INFO L225 Difference]: With dead ends: 10831 [2021-06-05 22:26:35,457 INFO L226 Difference]: Without dead ends: 10694 [2021-06-05 22:26:35,457 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1242 ImplicationChecksByTransitivity, 1156.2ms TimeCoverageRelationStatistics Valid=411, Invalid=4011, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 22:26:35,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10694 states. [2021-06-05 22:26:35,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10694 to 8250. [2021-06-05 22:26:35,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8250 states, 8249 states have (on average 3.5330343071887502) internal successors, (29144), 8249 states have internal predecessors, (29144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:35,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8250 states to 8250 states and 29144 transitions. [2021-06-05 22:26:35,604 INFO L78 Accepts]: Start accepts. Automaton has 8250 states and 29144 transitions. Word has length 47 [2021-06-05 22:26:35,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:26:35,605 INFO L482 AbstractCegarLoop]: Abstraction has 8250 states and 29144 transitions. [2021-06-05 22:26:35,605 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:35,605 INFO L276 IsEmpty]: Start isEmpty. Operand 8250 states and 29144 transitions. [2021-06-05 22:26:35,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:26:35,616 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:26:35,616 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:26:35,617 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2021-06-05 22:26:35,617 INFO L430 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:26:35,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:26:35,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1317939958, now seen corresponding path program 183 times [2021-06-05 22:26:35,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:26:35,617 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455153487] [2021-06-05 22:26:35,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:26:35,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:26:35,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:26:35,806 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:26:35,806 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455153487] [2021-06-05 22:26:35,807 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455153487] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:26:35,807 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:26:35,807 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:26:35,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315436894] [2021-06-05 22:26:35,807 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:26:35,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:26:35,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:26:35,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:26:35,807 INFO L87 Difference]: Start difference. First operand 8250 states and 29144 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:38,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:26:38,027 INFO L93 Difference]: Finished difference Result 10815 states and 37951 transitions. [2021-06-05 22:26:38,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-06-05 22:26:38,027 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:26:38,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:26:38,047 INFO L225 Difference]: With dead ends: 10815 [2021-06-05 22:26:38,047 INFO L226 Difference]: Without dead ends: 10670 [2021-06-05 22:26:38,047 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1345 ImplicationChecksByTransitivity, 1257.1ms TimeCoverageRelationStatistics Valid=427, Invalid=4403, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 22:26:38,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10670 states. [2021-06-05 22:26:38,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10670 to 8250. [2021-06-05 22:26:38,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8250 states, 8249 states have (on average 3.532306946296521) internal successors, (29138), 8249 states have internal predecessors, (29138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:38,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8250 states to 8250 states and 29138 transitions. [2021-06-05 22:26:38,196 INFO L78 Accepts]: Start accepts. Automaton has 8250 states and 29138 transitions. Word has length 47 [2021-06-05 22:26:38,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:26:38,196 INFO L482 AbstractCegarLoop]: Abstraction has 8250 states and 29138 transitions. [2021-06-05 22:26:38,196 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:38,196 INFO L276 IsEmpty]: Start isEmpty. Operand 8250 states and 29138 transitions. [2021-06-05 22:26:38,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:26:38,208 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:26:38,208 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:26:38,208 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2021-06-05 22:26:38,208 INFO L430 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:26:38,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:26:38,208 INFO L82 PathProgramCache]: Analyzing trace with hash -418044180, now seen corresponding path program 184 times [2021-06-05 22:26:38,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:26:38,208 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211293550] [2021-06-05 22:26:38,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:26:38,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:26:38,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:26:38,384 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:26:38,385 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211293550] [2021-06-05 22:26:38,385 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211293550] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:26:38,385 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:26:38,385 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:26:38,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648545831] [2021-06-05 22:26:38,385 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:26:38,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:26:38,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:26:38,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:26:38,385 INFO L87 Difference]: Start difference. First operand 8250 states and 29138 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:43,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:26:43,374 INFO L93 Difference]: Finished difference Result 15896 states and 56270 transitions. [2021-06-05 22:26:43,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2021-06-05 22:26:43,374 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:26:43,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:26:43,404 INFO L225 Difference]: With dead ends: 15896 [2021-06-05 22:26:43,404 INFO L226 Difference]: Without dead ends: 15759 [2021-06-05 22:26:43,406 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6378 ImplicationChecksByTransitivity, 3049.5ms TimeCoverageRelationStatistics Valid=1245, Invalid=16047, Unknown=0, NotChecked=0, Total=17292 [2021-06-05 22:26:43,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15759 states. [2021-06-05 22:26:43,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15759 to 8399. [2021-06-05 22:26:43,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8399 states, 8398 states have (on average 3.5382233865206003) internal successors, (29714), 8398 states have internal predecessors, (29714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:43,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8399 states to 8399 states and 29714 transitions. [2021-06-05 22:26:43,589 INFO L78 Accepts]: Start accepts. Automaton has 8399 states and 29714 transitions. Word has length 47 [2021-06-05 22:26:43,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:26:43,589 INFO L482 AbstractCegarLoop]: Abstraction has 8399 states and 29714 transitions. [2021-06-05 22:26:43,589 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:43,589 INFO L276 IsEmpty]: Start isEmpty. Operand 8399 states and 29714 transitions. [2021-06-05 22:26:43,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:26:43,602 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:26:43,602 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:26:43,602 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2021-06-05 22:26:43,602 INFO L430 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:26:43,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:26:43,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1268696088, now seen corresponding path program 185 times [2021-06-05 22:26:43,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:26:43,602 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331691595] [2021-06-05 22:26:43,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:26:43,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:26:43,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:26:43,799 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:26:43,799 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331691595] [2021-06-05 22:26:43,799 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331691595] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:26:43,799 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:26:43,799 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:26:43,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381549621] [2021-06-05 22:26:43,799 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:26:43,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:26:43,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:26:43,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:26:43,800 INFO L87 Difference]: Start difference. First operand 8399 states and 29714 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:49,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:26:49,257 INFO L93 Difference]: Finished difference Result 16821 states and 59650 transitions. [2021-06-05 22:26:49,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2021-06-05 22:26:49,257 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:26:49,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:26:49,289 INFO L225 Difference]: With dead ends: 16821 [2021-06-05 22:26:49,289 INFO L226 Difference]: Without dead ends: 16561 [2021-06-05 22:26:49,290 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7653 ImplicationChecksByTransitivity, 3356.1ms TimeCoverageRelationStatistics Valid=1423, Invalid=18883, Unknown=0, NotChecked=0, Total=20306 [2021-06-05 22:26:49,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16561 states. [2021-06-05 22:26:49,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16561 to 8241. [2021-06-05 22:26:49,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8241 states, 8240 states have (on average 3.533252427184466) internal successors, (29114), 8240 states have internal predecessors, (29114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:49,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8241 states to 8241 states and 29114 transitions. [2021-06-05 22:26:49,471 INFO L78 Accepts]: Start accepts. Automaton has 8241 states and 29114 transitions. Word has length 47 [2021-06-05 22:26:49,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:26:49,472 INFO L482 AbstractCegarLoop]: Abstraction has 8241 states and 29114 transitions. [2021-06-05 22:26:49,472 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:49,472 INFO L276 IsEmpty]: Start isEmpty. Operand 8241 states and 29114 transitions. [2021-06-05 22:26:49,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:26:49,482 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:26:49,482 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:26:49,482 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2021-06-05 22:26:49,483 INFO L430 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:26:49,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:26:49,483 INFO L82 PathProgramCache]: Analyzing trace with hash 411905358, now seen corresponding path program 186 times [2021-06-05 22:26:49,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:26:49,483 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375681950] [2021-06-05 22:26:49,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:26:49,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:26:49,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:26:49,660 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:26:49,660 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375681950] [2021-06-05 22:26:49,660 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375681950] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:26:49,660 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:26:49,660 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:26:49,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459461745] [2021-06-05 22:26:49,660 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:26:49,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:26:49,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:26:49,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:26:49,661 INFO L87 Difference]: Start difference. First operand 8241 states and 29114 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:52,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:26:52,006 INFO L93 Difference]: Finished difference Result 11022 states and 38552 transitions. [2021-06-05 22:26:52,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-06-05 22:26:52,007 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:26:52,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:26:52,026 INFO L225 Difference]: With dead ends: 11022 [2021-06-05 22:26:52,026 INFO L226 Difference]: Without dead ends: 10901 [2021-06-05 22:26:52,027 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1607 ImplicationChecksByTransitivity, 1389.3ms TimeCoverageRelationStatistics Valid=477, Invalid=5073, Unknown=0, NotChecked=0, Total=5550 [2021-06-05 22:26:52,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10901 states. [2021-06-05 22:26:52,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10901 to 8241. [2021-06-05 22:26:52,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8241 states, 8240 states have (on average 3.533252427184466) internal successors, (29114), 8240 states have internal predecessors, (29114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:52,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8241 states to 8241 states and 29114 transitions. [2021-06-05 22:26:52,181 INFO L78 Accepts]: Start accepts. Automaton has 8241 states and 29114 transitions. Word has length 47 [2021-06-05 22:26:52,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:26:52,181 INFO L482 AbstractCegarLoop]: Abstraction has 8241 states and 29114 transitions. [2021-06-05 22:26:52,181 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:52,182 INFO L276 IsEmpty]: Start isEmpty. Operand 8241 states and 29114 transitions. [2021-06-05 22:26:52,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:26:52,193 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:26:52,193 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:26:52,193 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2021-06-05 22:26:52,193 INFO L430 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:26:52,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:26:52,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1983326794, now seen corresponding path program 187 times [2021-06-05 22:26:52,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:26:52,194 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132896026] [2021-06-05 22:26:52,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:26:52,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:26:52,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:26:52,372 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:26:52,372 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132896026] [2021-06-05 22:26:52,373 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132896026] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:26:52,373 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:26:52,373 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:26:52,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804549119] [2021-06-05 22:26:52,373 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:26:52,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:26:52,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:26:52,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:26:52,373 INFO L87 Difference]: Start difference. First operand 8241 states and 29114 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:57,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:26:57,176 INFO L93 Difference]: Finished difference Result 15203 states and 53548 transitions. [2021-06-05 22:26:57,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2021-06-05 22:26:57,177 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:26:57,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:26:57,205 INFO L225 Difference]: With dead ends: 15203 [2021-06-05 22:26:57,205 INFO L226 Difference]: Without dead ends: 14959 [2021-06-05 22:26:57,206 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6544 ImplicationChecksByTransitivity, 2929.9ms TimeCoverageRelationStatistics Valid=1297, Invalid=16525, Unknown=0, NotChecked=0, Total=17822 [2021-06-05 22:26:57,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14959 states. [2021-06-05 22:26:57,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14959 to 8223. [2021-06-05 22:26:57,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8223 states, 8222 states have (on average 3.534784723911457) internal successors, (29063), 8222 states have internal predecessors, (29063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:57,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8223 states to 8223 states and 29063 transitions. [2021-06-05 22:26:57,386 INFO L78 Accepts]: Start accepts. Automaton has 8223 states and 29063 transitions. Word has length 47 [2021-06-05 22:26:57,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:26:57,386 INFO L482 AbstractCegarLoop]: Abstraction has 8223 states and 29063 transitions. [2021-06-05 22:26:57,386 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:57,386 INFO L276 IsEmpty]: Start isEmpty. Operand 8223 states and 29063 transitions. [2021-06-05 22:26:57,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:26:57,398 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:26:57,398 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:26:57,398 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2021-06-05 22:26:57,399 INFO L430 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:26:57,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:26:57,399 INFO L82 PathProgramCache]: Analyzing trace with hash -2012748824, now seen corresponding path program 188 times [2021-06-05 22:26:57,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:26:57,399 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612862026] [2021-06-05 22:26:57,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:26:57,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:26:57,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:26:57,571 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:26:57,571 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612862026] [2021-06-05 22:26:57,571 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612862026] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:26:57,571 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:26:57,571 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:26:57,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686345339] [2021-06-05 22:26:57,571 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:26:57,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:26:57,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:26:57,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:26:57,571 INFO L87 Difference]: Start difference. First operand 8223 states and 29063 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:59,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:26:59,282 INFO L93 Difference]: Finished difference Result 10368 states and 36385 transitions. [2021-06-05 22:26:59,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-05 22:26:59,283 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:26:59,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:26:59,299 INFO L225 Difference]: With dead ends: 10368 [2021-06-05 22:26:59,299 INFO L226 Difference]: Without dead ends: 10271 [2021-06-05 22:26:59,300 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 959 ImplicationChecksByTransitivity, 990.1ms TimeCoverageRelationStatistics Valid=340, Invalid=3320, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 22:26:59,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10271 states. [2021-06-05 22:26:59,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10271 to 8237. [2021-06-05 22:26:59,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8237 states, 8236 states have (on average 3.5320543953375423) internal successors, (29090), 8236 states have internal predecessors, (29090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:59,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8237 states to 8237 states and 29090 transitions. [2021-06-05 22:26:59,435 INFO L78 Accepts]: Start accepts. Automaton has 8237 states and 29090 transitions. Word has length 47 [2021-06-05 22:26:59,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:26:59,435 INFO L482 AbstractCegarLoop]: Abstraction has 8237 states and 29090 transitions. [2021-06-05 22:26:59,435 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:59,435 INFO L276 IsEmpty]: Start isEmpty. Operand 8237 states and 29090 transitions. [2021-06-05 22:26:59,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:26:59,447 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:26:59,447 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:26:59,447 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2021-06-05 22:26:59,447 INFO L430 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:26:59,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:26:59,447 INFO L82 PathProgramCache]: Analyzing trace with hash 556797962, now seen corresponding path program 189 times [2021-06-05 22:26:59,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:26:59,447 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336484046] [2021-06-05 22:26:59,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:26:59,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:26:59,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:26:59,627 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:26:59,627 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336484046] [2021-06-05 22:26:59,627 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336484046] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:26:59,627 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:26:59,627 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:26:59,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030394543] [2021-06-05 22:26:59,627 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:26:59,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:26:59,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:26:59,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:26:59,627 INFO L87 Difference]: Start difference. First operand 8237 states and 29090 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:27:04,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:27:04,126 INFO L93 Difference]: Finished difference Result 15369 states and 53940 transitions. [2021-06-05 22:27:04,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2021-06-05 22:27:04,126 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:27:04,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:27:04,155 INFO L225 Difference]: With dead ends: 15369 [2021-06-05 22:27:04,155 INFO L226 Difference]: Without dead ends: 14901 [2021-06-05 22:27:04,156 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5662 ImplicationChecksByTransitivity, 2759.4ms TimeCoverageRelationStatistics Valid=1290, Invalid=14460, Unknown=0, NotChecked=0, Total=15750 [2021-06-05 22:27:04,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14901 states. [2021-06-05 22:27:04,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14901 to 8363. [2021-06-05 22:27:04,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8363 states, 8362 states have (on average 3.5418560153073426) internal successors, (29617), 8362 states have internal predecessors, (29617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:27:04,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8363 states to 8363 states and 29617 transitions. [2021-06-05 22:27:04,397 INFO L78 Accepts]: Start accepts. Automaton has 8363 states and 29617 transitions. Word has length 47 [2021-06-05 22:27:04,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:27:04,397 INFO L482 AbstractCegarLoop]: Abstraction has 8363 states and 29617 transitions. [2021-06-05 22:27:04,397 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:27:04,397 INFO L276 IsEmpty]: Start isEmpty. Operand 8363 states and 29617 transitions. [2021-06-05 22:27:04,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:27:04,408 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:27:04,408 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:27:04,408 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2021-06-05 22:27:04,408 INFO L430 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:27:04,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:27:04,409 INFO L82 PathProgramCache]: Analyzing trace with hash -530349878, now seen corresponding path program 190 times [2021-06-05 22:27:04,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:27:04,409 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129693102] [2021-06-05 22:27:04,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:27:04,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:27:04,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:27:04,588 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:27:04,588 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129693102] [2021-06-05 22:27:04,588 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129693102] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:27:04,588 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:27:04,588 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:27:04,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238451559] [2021-06-05 22:27:04,588 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:27:04,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:27:04,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:27:04,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:27:04,589 INFO L87 Difference]: Start difference. First operand 8363 states and 29617 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:27:07,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:27:07,383 INFO L93 Difference]: Finished difference Result 12940 states and 45590 transitions. [2021-06-05 22:27:07,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-06-05 22:27:07,383 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:27:07,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:27:07,409 INFO L225 Difference]: With dead ends: 12940 [2021-06-05 22:27:07,410 INFO L226 Difference]: Without dead ends: 12813 [2021-06-05 22:27:07,410 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1829 ImplicationChecksByTransitivity, 1481.0ms TimeCoverageRelationStatistics Valid=542, Invalid=5620, Unknown=0, NotChecked=0, Total=6162 [2021-06-05 22:27:07,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12813 states. [2021-06-05 22:27:07,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12813 to 8395. [2021-06-05 22:27:07,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8395 states, 8394 states have (on average 3.5395520609959497) internal successors, (29711), 8394 states have internal predecessors, (29711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:27:07,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8395 states to 8395 states and 29711 transitions. [2021-06-05 22:27:07,572 INFO L78 Accepts]: Start accepts. Automaton has 8395 states and 29711 transitions. Word has length 47 [2021-06-05 22:27:07,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:27:07,572 INFO L482 AbstractCegarLoop]: Abstraction has 8395 states and 29711 transitions. [2021-06-05 22:27:07,572 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:27:07,572 INFO L276 IsEmpty]: Start isEmpty. Operand 8395 states and 29711 transitions. [2021-06-05 22:27:07,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:27:07,584 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:27:07,584 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:27:07,584 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2021-06-05 22:27:07,584 INFO L430 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:27:07,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:27:07,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1901547284, now seen corresponding path program 191 times [2021-06-05 22:27:07,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:27:07,585 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031369455] [2021-06-05 22:27:07,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:27:07,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:27:07,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:27:07,761 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:27:07,761 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031369455] [2021-06-05 22:27:07,761 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031369455] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:27:07,761 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:27:07,761 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:27:07,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045403171] [2021-06-05 22:27:07,761 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:27:07,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:27:07,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:27:07,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:27:07,761 INFO L87 Difference]: Start difference. First operand 8395 states and 29711 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:27:10,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:27:10,270 INFO L93 Difference]: Finished difference Result 12641 states and 44540 transitions. [2021-06-05 22:27:10,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-06-05 22:27:10,271 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:27:10,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:27:10,297 INFO L225 Difference]: With dead ends: 12641 [2021-06-05 22:27:10,298 INFO L226 Difference]: Without dead ends: 12541 [2021-06-05 22:27:10,298 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1552 ImplicationChecksByTransitivity, 1424.0ms TimeCoverageRelationStatistics Valid=494, Invalid=4908, Unknown=0, NotChecked=0, Total=5402 [2021-06-05 22:27:10,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12541 states. [2021-06-05 22:27:10,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12541 to 8422. [2021-06-05 22:27:10,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8422 states, 8421 states have (on average 3.536040850255314) internal successors, (29777), 8421 states have internal predecessors, (29777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:27:10,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8422 states to 8422 states and 29777 transitions. [2021-06-05 22:27:10,452 INFO L78 Accepts]: Start accepts. Automaton has 8422 states and 29777 transitions. Word has length 47 [2021-06-05 22:27:10,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:27:10,452 INFO L482 AbstractCegarLoop]: Abstraction has 8422 states and 29777 transitions. [2021-06-05 22:27:10,452 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:27:10,452 INFO L276 IsEmpty]: Start isEmpty. Operand 8422 states and 29777 transitions. [2021-06-05 22:27:10,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:27:10,464 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:27:10,464 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:27:10,465 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2021-06-05 22:27:10,465 INFO L430 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:27:10,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:27:10,465 INFO L82 PathProgramCache]: Analyzing trace with hash 958352522, now seen corresponding path program 192 times [2021-06-05 22:27:10,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:27:10,465 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730352692] [2021-06-05 22:27:10,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:27:10,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:27:10,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:27:10,649 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:27:10,649 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730352692] [2021-06-05 22:27:10,650 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730352692] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:27:10,650 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:27:10,650 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:27:10,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437708858] [2021-06-05 22:27:10,650 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:27:10,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:27:10,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:27:10,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:27:10,650 INFO L87 Difference]: Start difference. First operand 8422 states and 29777 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:27:14,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:27:14,248 INFO L93 Difference]: Finished difference Result 14137 states and 49621 transitions. [2021-06-05 22:27:14,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-06-05 22:27:14,248 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:27:14,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:27:14,272 INFO L225 Difference]: With dead ends: 14137 [2021-06-05 22:27:14,272 INFO L226 Difference]: Without dead ends: 14019 [2021-06-05 22:27:14,273 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3527 ImplicationChecksByTransitivity, 2125.0ms TimeCoverageRelationStatistics Valid=879, Invalid=9627, Unknown=0, NotChecked=0, Total=10506 [2021-06-05 22:27:14,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14019 states. [2021-06-05 22:27:14,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14019 to 8395. [2021-06-05 22:27:14,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8395 states, 8394 states have (on average 3.5390755301405767) internal successors, (29707), 8394 states have internal predecessors, (29707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:27:14,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8395 states to 8395 states and 29707 transitions. [2021-06-05 22:27:14,445 INFO L78 Accepts]: Start accepts. Automaton has 8395 states and 29707 transitions. Word has length 47 [2021-06-05 22:27:14,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:27:14,445 INFO L482 AbstractCegarLoop]: Abstraction has 8395 states and 29707 transitions. [2021-06-05 22:27:14,445 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:27:14,445 INFO L276 IsEmpty]: Start isEmpty. Operand 8395 states and 29707 transitions. [2021-06-05 22:27:14,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:27:14,457 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:27:14,457 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:27:14,457 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2021-06-05 22:27:14,457 INFO L430 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:27:14,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:27:14,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1516218864, now seen corresponding path program 193 times [2021-06-05 22:27:14,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:27:14,458 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685393863] [2021-06-05 22:27:14,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:27:14,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:27:14,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:27:14,641 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:27:14,641 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685393863] [2021-06-05 22:27:14,641 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685393863] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:27:14,641 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:27:14,641 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:27:14,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381933235] [2021-06-05 22:27:14,641 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:27:14,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:27:14,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:27:14,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:27:14,642 INFO L87 Difference]: Start difference. First operand 8395 states and 29707 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:27:18,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:27:18,351 INFO L93 Difference]: Finished difference Result 15417 states and 54397 transitions. [2021-06-05 22:27:18,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-06-05 22:27:18,351 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:27:18,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:27:18,381 INFO L225 Difference]: With dead ends: 15417 [2021-06-05 22:27:18,382 INFO L226 Difference]: Without dead ends: 15312 [2021-06-05 22:27:18,383 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3712 ImplicationChecksByTransitivity, 2135.3ms TimeCoverageRelationStatistics Valid=843, Invalid=10077, Unknown=0, NotChecked=0, Total=10920 [2021-06-05 22:27:18,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15312 states. [2021-06-05 22:27:18,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15312 to 8409. [2021-06-05 22:27:18,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8409 states, 8408 states have (on average 3.538415794481446) internal successors, (29751), 8408 states have internal predecessors, (29751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:27:18,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8409 states to 8409 states and 29751 transitions. [2021-06-05 22:27:18,596 INFO L78 Accepts]: Start accepts. Automaton has 8409 states and 29751 transitions. Word has length 47 [2021-06-05 22:27:18,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:27:18,596 INFO L482 AbstractCegarLoop]: Abstraction has 8409 states and 29751 transitions. [2021-06-05 22:27:18,596 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:27:18,596 INFO L276 IsEmpty]: Start isEmpty. Operand 8409 states and 29751 transitions. [2021-06-05 22:27:18,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:27:18,609 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:27:18,609 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:27:18,609 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2021-06-05 22:27:18,609 INFO L430 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:27:18,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:27:18,610 INFO L82 PathProgramCache]: Analyzing trace with hash 994286064, now seen corresponding path program 194 times [2021-06-05 22:27:18,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:27:18,610 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565137991] [2021-06-05 22:27:18,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:27:18,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:27:18,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:27:18,788 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:27:18,788 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565137991] [2021-06-05 22:27:18,788 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565137991] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:27:18,788 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:27:18,788 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:27:18,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883298899] [2021-06-05 22:27:18,788 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:27:18,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:27:18,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:27:18,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:27:18,789 INFO L87 Difference]: Start difference. First operand 8409 states and 29751 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:27:21,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:27:21,343 INFO L93 Difference]: Finished difference Result 12990 states and 45708 transitions. [2021-06-05 22:27:21,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-06-05 22:27:21,343 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:27:21,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:27:21,365 INFO L225 Difference]: With dead ends: 12990 [2021-06-05 22:27:21,365 INFO L226 Difference]: Without dead ends: 12884 [2021-06-05 22:27:21,366 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1589 ImplicationChecksByTransitivity, 1498.9ms TimeCoverageRelationStatistics Valid=540, Invalid=5010, Unknown=0, NotChecked=0, Total=5550 [2021-06-05 22:27:21,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12884 states. [2021-06-05 22:27:21,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12884 to 8409. [2021-06-05 22:27:21,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8409 states, 8408 states have (on average 3.538415794481446) internal successors, (29751), 8408 states have internal predecessors, (29751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:27:21,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8409 states to 8409 states and 29751 transitions. [2021-06-05 22:27:21,518 INFO L78 Accepts]: Start accepts. Automaton has 8409 states and 29751 transitions. Word has length 47 [2021-06-05 22:27:21,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:27:21,518 INFO L482 AbstractCegarLoop]: Abstraction has 8409 states and 29751 transitions. [2021-06-05 22:27:21,518 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:27:21,518 INFO L276 IsEmpty]: Start isEmpty. Operand 8409 states and 29751 transitions. [2021-06-05 22:27:21,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:27:21,530 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:27:21,530 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:27:21,530 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2021-06-05 22:27:21,530 INFO L430 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:27:21,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:27:21,530 INFO L82 PathProgramCache]: Analyzing trace with hash 352519916, now seen corresponding path program 195 times [2021-06-05 22:27:21,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:27:21,530 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118376521] [2021-06-05 22:27:21,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:27:21,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:27:21,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:27:21,721 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:27:21,721 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118376521] [2021-06-05 22:27:21,721 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118376521] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:27:21,721 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:27:21,721 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:27:21,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520400594] [2021-06-05 22:27:21,721 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:27:21,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:27:21,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:27:21,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:27:21,722 INFO L87 Difference]: Start difference. First operand 8409 states and 29751 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:27:26,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:27:26,484 INFO L93 Difference]: Finished difference Result 17836 states and 63151 transitions. [2021-06-05 22:27:26,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2021-06-05 22:27:26,484 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:27:26,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:27:26,520 INFO L225 Difference]: With dead ends: 17836 [2021-06-05 22:27:26,520 INFO L226 Difference]: Without dead ends: 17523 [2021-06-05 22:27:26,522 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6363 ImplicationChecksByTransitivity, 2905.9ms TimeCoverageRelationStatistics Valid=1266, Invalid=16026, Unknown=0, NotChecked=0, Total=17292 [2021-06-05 22:27:26,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17523 states. [2021-06-05 22:27:26,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17523 to 8449. [2021-06-05 22:27:26,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8449 states, 8448 states have (on average 3.539535984848485) internal successors, (29902), 8448 states have internal predecessors, (29902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:27:26,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8449 states to 8449 states and 29902 transitions. [2021-06-05 22:27:26,770 INFO L78 Accepts]: Start accepts. Automaton has 8449 states and 29902 transitions. Word has length 47 [2021-06-05 22:27:26,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:27:26,770 INFO L482 AbstractCegarLoop]: Abstraction has 8449 states and 29902 transitions. [2021-06-05 22:27:26,770 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:27:26,770 INFO L276 IsEmpty]: Start isEmpty. Operand 8449 states and 29902 transitions. [2021-06-05 22:27:26,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:27:26,782 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:27:26,782 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:27:26,782 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2021-06-05 22:27:26,782 INFO L430 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:27:26,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:27:26,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1100510326, now seen corresponding path program 196 times [2021-06-05 22:27:26,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:27:26,782 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154109742] [2021-06-05 22:27:26,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:27:26,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:27:26,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:27:26,958 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:27:26,958 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154109742] [2021-06-05 22:27:26,958 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154109742] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:27:26,958 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:27:26,958 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:27:26,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954642641] [2021-06-05 22:27:26,958 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:27:26,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:27:26,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:27:26,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:27:26,958 INFO L87 Difference]: Start difference. First operand 8449 states and 29902 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:27:29,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:27:29,674 INFO L93 Difference]: Finished difference Result 13381 states and 47204 transitions. [2021-06-05 22:27:29,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-06-05 22:27:29,675 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:27:29,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:27:29,698 INFO L225 Difference]: With dead ends: 13381 [2021-06-05 22:27:29,699 INFO L226 Difference]: Without dead ends: 13281 [2021-06-05 22:27:29,699 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1887 ImplicationChecksByTransitivity, 1574.5ms TimeCoverageRelationStatistics Valid=577, Invalid=5743, Unknown=0, NotChecked=0, Total=6320 [2021-06-05 22:27:29,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13281 states. [2021-06-05 22:27:29,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13281 to 8458. [2021-06-05 22:27:29,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8458 states, 8457 states have (on average 3.5383705805841315) internal successors, (29924), 8457 states have internal predecessors, (29924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:27:29,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8458 states to 8458 states and 29924 transitions. [2021-06-05 22:27:29,873 INFO L78 Accepts]: Start accepts. Automaton has 8458 states and 29924 transitions. Word has length 47 [2021-06-05 22:27:29,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:27:29,873 INFO L482 AbstractCegarLoop]: Abstraction has 8458 states and 29924 transitions. [2021-06-05 22:27:29,873 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:27:29,873 INFO L276 IsEmpty]: Start isEmpty. Operand 8458 states and 29924 transitions. [2021-06-05 22:27:29,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:27:29,886 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:27:29,886 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:27:29,886 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2021-06-05 22:27:29,886 INFO L430 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:27:29,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:27:29,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1166572884, now seen corresponding path program 197 times [2021-06-05 22:27:29,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:27:29,887 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180981252] [2021-06-05 22:27:29,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:27:29,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:27:30,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:27:30,066 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:27:30,066 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180981252] [2021-06-05 22:27:30,066 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180981252] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:27:30,066 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:27:30,066 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:27:30,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089423058] [2021-06-05 22:27:30,066 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:27:30,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:27:30,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:27:30,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:27:30,067 INFO L87 Difference]: Start difference. First operand 8458 states and 29924 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:27:33,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:27:33,888 INFO L93 Difference]: Finished difference Result 14984 states and 52632 transitions. [2021-06-05 22:27:33,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2021-06-05 22:27:33,888 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:27:33,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:27:33,917 INFO L225 Difference]: With dead ends: 14984 [2021-06-05 22:27:33,918 INFO L226 Difference]: Without dead ends: 14878 [2021-06-05 22:27:33,918 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4122 ImplicationChecksByTransitivity, 2264.7ms TimeCoverageRelationStatistics Valid=960, Invalid=11030, Unknown=0, NotChecked=0, Total=11990 [2021-06-05 22:27:33,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14878 states. [2021-06-05 22:27:34,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14878 to 8443. [2021-06-05 22:27:34,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8443 states, 8442 states have (on average 3.5405117270788913) internal successors, (29889), 8442 states have internal predecessors, (29889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:27:34,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8443 states to 8443 states and 29889 transitions. [2021-06-05 22:27:34,107 INFO L78 Accepts]: Start accepts. Automaton has 8443 states and 29889 transitions. Word has length 47 [2021-06-05 22:27:34,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:27:34,107 INFO L482 AbstractCegarLoop]: Abstraction has 8443 states and 29889 transitions. [2021-06-05 22:27:34,107 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:27:34,108 INFO L276 IsEmpty]: Start isEmpty. Operand 8443 states and 29889 transitions. [2021-06-05 22:27:34,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:27:34,119 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:27:34,119 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:27:34,120 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2021-06-05 22:27:34,120 INFO L430 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:27:34,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:27:34,120 INFO L82 PathProgramCache]: Analyzing trace with hash 497890762, now seen corresponding path program 198 times [2021-06-05 22:27:34,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:27:34,120 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803228879] [2021-06-05 22:27:34,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:27:34,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:27:34,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:27:34,299 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:27:34,299 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803228879] [2021-06-05 22:27:34,299 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803228879] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:27:34,299 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:27:34,299 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:27:34,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096058286] [2021-06-05 22:27:34,300 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:27:34,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:27:34,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:27:34,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:27:34,300 INFO L87 Difference]: Start difference. First operand 8443 states and 29889 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:27:36,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:27:36,672 INFO L93 Difference]: Finished difference Result 12146 states and 42729 transitions. [2021-06-05 22:27:36,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-05 22:27:36,672 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:27:36,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:27:36,695 INFO L225 Difference]: With dead ends: 12146 [2021-06-05 22:27:36,695 INFO L226 Difference]: Without dead ends: 12019 [2021-06-05 22:27:36,696 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1484 ImplicationChecksByTransitivity, 1290.1ms TimeCoverageRelationStatistics Valid=474, Invalid=4782, Unknown=0, NotChecked=0, Total=5256 [2021-06-05 22:27:36,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12019 states. [2021-06-05 22:27:36,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12019 to 8465. [2021-06-05 22:27:36,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8465 states, 8464 states have (on average 3.5388705103969755) internal successors, (29953), 8464 states have internal predecessors, (29953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:27:36,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8465 states to 8465 states and 29953 transitions. [2021-06-05 22:27:36,855 INFO L78 Accepts]: Start accepts. Automaton has 8465 states and 29953 transitions. Word has length 47 [2021-06-05 22:27:36,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:27:36,855 INFO L482 AbstractCegarLoop]: Abstraction has 8465 states and 29953 transitions. [2021-06-05 22:27:36,855 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:27:36,855 INFO L276 IsEmpty]: Start isEmpty. Operand 8465 states and 29953 transitions. [2021-06-05 22:27:36,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:27:36,867 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:27:36,867 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:27:36,867 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2021-06-05 22:27:36,867 INFO L430 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:27:36,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:27:36,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1969705274, now seen corresponding path program 199 times [2021-06-05 22:27:36,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:27:36,868 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580020686] [2021-06-05 22:27:36,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:27:36,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:27:37,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:27:37,076 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:27:37,077 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580020686] [2021-06-05 22:27:37,077 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580020686] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:27:37,077 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:27:37,077 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:27:37,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718068202] [2021-06-05 22:27:37,077 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:27:37,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:27:37,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:27:37,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:27:37,077 INFO L87 Difference]: Start difference. First operand 8465 states and 29953 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:27:39,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:27:39,139 INFO L93 Difference]: Finished difference Result 11529 states and 40297 transitions. [2021-06-05 22:27:39,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-05 22:27:39,139 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:27:39,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:27:39,159 INFO L225 Difference]: With dead ends: 11529 [2021-06-05 22:27:39,160 INFO L226 Difference]: Without dead ends: 11432 [2021-06-05 22:27:39,160 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1227 ImplicationChecksByTransitivity, 1212.5ms TimeCoverageRelationStatistics Valid=418, Invalid=4138, Unknown=0, NotChecked=0, Total=4556 [2021-06-05 22:27:39,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11432 states. [2021-06-05 22:27:39,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11432 to 8483. [2021-06-05 22:27:39,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8483 states, 8482 states have (on average 3.536665880688517) internal successors, (29998), 8482 states have internal predecessors, (29998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:27:39,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8483 states to 8483 states and 29998 transitions. [2021-06-05 22:27:39,321 INFO L78 Accepts]: Start accepts. Automaton has 8483 states and 29998 transitions. Word has length 47 [2021-06-05 22:27:39,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:27:39,321 INFO L482 AbstractCegarLoop]: Abstraction has 8483 states and 29998 transitions. [2021-06-05 22:27:39,321 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:27:39,321 INFO L276 IsEmpty]: Start isEmpty. Operand 8483 states and 29998 transitions. [2021-06-05 22:27:39,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:27:39,333 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:27:39,333 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:27:39,333 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2021-06-05 22:27:39,333 INFO L430 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:27:39,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:27:39,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1967031448, now seen corresponding path program 200 times [2021-06-05 22:27:39,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:27:39,334 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397631075] [2021-06-05 22:27:39,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:27:39,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:27:39,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:27:39,539 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:27:39,539 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397631075] [2021-06-05 22:27:39,539 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397631075] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:27:39,539 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:27:39,539 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:27:39,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885085475] [2021-06-05 22:27:39,539 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:27:39,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:27:39,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:27:39,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:27:39,540 INFO L87 Difference]: Start difference. First operand 8483 states and 29998 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:27:42,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:27:42,682 INFO L93 Difference]: Finished difference Result 12913 states and 45328 transitions. [2021-06-05 22:27:42,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-06-05 22:27:42,682 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:27:42,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:27:42,707 INFO L225 Difference]: With dead ends: 12913 [2021-06-05 22:27:42,707 INFO L226 Difference]: Without dead ends: 12804 [2021-06-05 22:27:42,708 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2973 ImplicationChecksByTransitivity, 1963.9ms TimeCoverageRelationStatistics Valid=802, Invalid=8318, Unknown=0, NotChecked=0, Total=9120 [2021-06-05 22:27:42,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12804 states. [2021-06-05 22:27:42,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12804 to 8465. [2021-06-05 22:27:42,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8465 states, 8464 states have (on average 3.5383979206049148) internal successors, (29949), 8464 states have internal predecessors, (29949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:27:42,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8465 states to 8465 states and 29949 transitions. [2021-06-05 22:27:42,883 INFO L78 Accepts]: Start accepts. Automaton has 8465 states and 29949 transitions. Word has length 47 [2021-06-05 22:27:42,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:27:42,883 INFO L482 AbstractCegarLoop]: Abstraction has 8465 states and 29949 transitions. [2021-06-05 22:27:42,883 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:27:42,883 INFO L276 IsEmpty]: Start isEmpty. Operand 8465 states and 29949 transitions. [2021-06-05 22:27:42,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:27:42,895 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:27:42,895 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:27:42,895 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2021-06-05 22:27:42,895 INFO L430 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:27:42,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:27:42,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1019464176, now seen corresponding path program 201 times [2021-06-05 22:27:42,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:27:42,895 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707181441] [2021-06-05 22:27:42,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:27:42,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:27:43,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:27:43,073 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:27:43,073 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707181441] [2021-06-05 22:27:43,073 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707181441] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:27:43,073 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:27:43,073 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:27:43,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234504771] [2021-06-05 22:27:43,073 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:27:43,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:27:43,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:27:43,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:27:43,073 INFO L87 Difference]: Start difference. First operand 8465 states and 29949 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:27:45,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:27:45,660 INFO L93 Difference]: Finished difference Result 11858 states and 41518 transitions. [2021-06-05 22:27:45,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-06-05 22:27:45,661 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:27:45,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:27:45,682 INFO L225 Difference]: With dead ends: 11858 [2021-06-05 22:27:45,682 INFO L226 Difference]: Without dead ends: 11737 [2021-06-05 22:27:45,682 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1939 ImplicationChecksByTransitivity, 1473.8ms TimeCoverageRelationStatistics Valid=575, Invalid=5905, Unknown=0, NotChecked=0, Total=6480 [2021-06-05 22:27:45,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11737 states. [2021-06-05 22:27:45,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11737 to 8465. [2021-06-05 22:27:45,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8465 states, 8464 states have (on average 3.5383979206049148) internal successors, (29949), 8464 states have internal predecessors, (29949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:27:45,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8465 states to 8465 states and 29949 transitions. [2021-06-05 22:27:45,837 INFO L78 Accepts]: Start accepts. Automaton has 8465 states and 29949 transitions. Word has length 47 [2021-06-05 22:27:45,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:27:45,837 INFO L482 AbstractCegarLoop]: Abstraction has 8465 states and 29949 transitions. [2021-06-05 22:27:45,837 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:27:45,837 INFO L276 IsEmpty]: Start isEmpty. Operand 8465 states and 29949 transitions. [2021-06-05 22:27:45,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:27:45,849 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:27:45,849 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:27:45,849 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2021-06-05 22:27:45,849 INFO L430 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:27:45,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:27:45,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1704081684, now seen corresponding path program 202 times [2021-06-05 22:27:45,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:27:45,849 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428979063] [2021-06-05 22:27:45,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:27:45,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:27:46,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:27:46,070 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:27:46,070 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428979063] [2021-06-05 22:27:46,070 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428979063] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:27:46,070 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:27:46,070 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:27:46,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419073464] [2021-06-05 22:27:46,070 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:27:46,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:27:46,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:27:46,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:27:46,071 INFO L87 Difference]: Start difference. First operand 8465 states and 29949 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:27:50,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:27:50,815 INFO L93 Difference]: Finished difference Result 16389 states and 57802 transitions. [2021-06-05 22:27:50,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2021-06-05 22:27:50,815 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:27:50,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:27:50,847 INFO L225 Difference]: With dead ends: 16389 [2021-06-05 22:27:50,847 INFO L226 Difference]: Without dead ends: 16064 [2021-06-05 22:27:50,849 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6700 ImplicationChecksByTransitivity, 2902.6ms TimeCoverageRelationStatistics Valid=1229, Invalid=16861, Unknown=0, NotChecked=0, Total=18090 [2021-06-05 22:27:50,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16064 states. [2021-06-05 22:27:51,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16064 to 8454. [2021-06-05 22:27:51,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8454 states, 8453 states have (on average 3.5374423281675145) internal successors, (29902), 8453 states have internal predecessors, (29902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:27:51,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8454 states to 8454 states and 29902 transitions. [2021-06-05 22:27:51,045 INFO L78 Accepts]: Start accepts. Automaton has 8454 states and 29902 transitions. Word has length 47 [2021-06-05 22:27:51,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:27:51,045 INFO L482 AbstractCegarLoop]: Abstraction has 8454 states and 29902 transitions. [2021-06-05 22:27:51,045 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:27:51,045 INFO L276 IsEmpty]: Start isEmpty. Operand 8454 states and 29902 transitions. [2021-06-05 22:27:51,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:27:51,057 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:27:51,057 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:27:51,057 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2021-06-05 22:27:51,057 INFO L430 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:27:51,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:27:51,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1405190006, now seen corresponding path program 203 times [2021-06-05 22:27:51,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:27:51,058 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230500340] [2021-06-05 22:27:51,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:27:51,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:27:51,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:27:51,245 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:27:51,245 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230500340] [2021-06-05 22:27:51,245 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230500340] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:27:51,245 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:27:51,245 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:27:51,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856145114] [2021-06-05 22:27:51,245 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:27:51,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:27:51,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:27:51,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:27:51,245 INFO L87 Difference]: Start difference. First operand 8454 states and 29902 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:27:53,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:27:53,417 INFO L93 Difference]: Finished difference Result 11514 states and 40231 transitions. [2021-06-05 22:27:53,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-06-05 22:27:53,418 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:27:53,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:27:53,438 INFO L225 Difference]: With dead ends: 11514 [2021-06-05 22:27:53,438 INFO L226 Difference]: Without dead ends: 11417 [2021-06-05 22:27:53,438 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1273 ImplicationChecksByTransitivity, 1266.4ms TimeCoverageRelationStatistics Valid=437, Invalid=4255, Unknown=0, NotChecked=0, Total=4692 [2021-06-05 22:27:53,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11417 states. [2021-06-05 22:27:53,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11417 to 8462. [2021-06-05 22:27:53,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8462 states, 8461 states have (on average 3.536225032502068) internal successors, (29920), 8461 states have internal predecessors, (29920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:27:53,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8462 states to 8462 states and 29920 transitions. [2021-06-05 22:27:53,594 INFO L78 Accepts]: Start accepts. Automaton has 8462 states and 29920 transitions. Word has length 47 [2021-06-05 22:27:53,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:27:53,594 INFO L482 AbstractCegarLoop]: Abstraction has 8462 states and 29920 transitions. [2021-06-05 22:27:53,594 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:27:53,594 INFO L276 IsEmpty]: Start isEmpty. Operand 8462 states and 29920 transitions. [2021-06-05 22:27:53,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:27:53,606 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:27:53,606 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:27:53,606 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2021-06-05 22:27:53,606 INFO L430 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:27:53,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:27:53,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1164356780, now seen corresponding path program 204 times [2021-06-05 22:27:53,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:27:53,606 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507466246] [2021-06-05 22:27:53,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:27:53,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:27:53,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:27:53,783 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:27:53,784 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507466246] [2021-06-05 22:27:53,784 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507466246] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:27:53,784 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:27:53,784 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:27:53,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928617924] [2021-06-05 22:27:53,784 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:27:53,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:27:53,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:27:53,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:27:53,784 INFO L87 Difference]: Start difference. First operand 8462 states and 29920 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:27:58,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:27:58,538 INFO L93 Difference]: Finished difference Result 15670 states and 54941 transitions. [2021-06-05 22:27:58,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2021-06-05 22:27:58,539 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:27:58,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:27:58,567 INFO L225 Difference]: With dead ends: 15670 [2021-06-05 22:27:58,567 INFO L226 Difference]: Without dead ends: 15446 [2021-06-05 22:27:58,568 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6875 ImplicationChecksByTransitivity, 3115.0ms TimeCoverageRelationStatistics Valid=1434, Invalid=17198, Unknown=0, NotChecked=0, Total=18632 [2021-06-05 22:27:58,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15446 states. [2021-06-05 22:27:58,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15446 to 8467. [2021-06-05 22:27:58,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8467 states, 8466 states have (on average 3.538743208126624) internal successors, (29959), 8466 states have internal predecessors, (29959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:27:58,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8467 states to 8467 states and 29959 transitions. [2021-06-05 22:27:58,763 INFO L78 Accepts]: Start accepts. Automaton has 8467 states and 29959 transitions. Word has length 47 [2021-06-05 22:27:58,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:27:58,764 INFO L482 AbstractCegarLoop]: Abstraction has 8467 states and 29959 transitions. [2021-06-05 22:27:58,764 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:27:58,764 INFO L276 IsEmpty]: Start isEmpty. Operand 8467 states and 29959 transitions. [2021-06-05 22:27:58,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:27:58,776 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:27:58,776 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:27:58,776 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2021-06-05 22:27:58,776 INFO L430 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:27:58,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:27:58,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1876917366, now seen corresponding path program 205 times [2021-06-05 22:27:58,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:27:58,777 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135999661] [2021-06-05 22:27:58,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:27:58,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:27:58,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:27:58,953 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:27:58,953 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135999661] [2021-06-05 22:27:58,953 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135999661] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:27:58,953 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:27:58,953 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:27:58,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096078173] [2021-06-05 22:27:58,953 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:27:58,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:27:58,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:27:58,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:27:58,953 INFO L87 Difference]: Start difference. First operand 8467 states and 29959 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:28:01,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:28:01,557 INFO L93 Difference]: Finished difference Result 12382 states and 43733 transitions. [2021-06-05 22:28:01,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-06-05 22:28:01,557 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:28:01,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:28:01,578 INFO L225 Difference]: With dead ends: 12382 [2021-06-05 22:28:01,579 INFO L226 Difference]: Without dead ends: 12282 [2021-06-05 22:28:01,579 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1496 ImplicationChecksByTransitivity, 1422.0ms TimeCoverageRelationStatistics Valid=472, Invalid=4784, Unknown=0, NotChecked=0, Total=5256 [2021-06-05 22:28:01,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12282 states. [2021-06-05 22:28:01,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12282 to 8476. [2021-06-05 22:28:01,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8476 states, 8475 states have (on average 3.537581120943953) internal successors, (29981), 8475 states have internal predecessors, (29981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:28:01,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8476 states to 8476 states and 29981 transitions. [2021-06-05 22:28:01,744 INFO L78 Accepts]: Start accepts. Automaton has 8476 states and 29981 transitions. Word has length 47 [2021-06-05 22:28:01,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:28:01,744 INFO L482 AbstractCegarLoop]: Abstraction has 8476 states and 29981 transitions. [2021-06-05 22:28:01,744 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:28:01,744 INFO L276 IsEmpty]: Start isEmpty. Operand 8476 states and 29981 transitions. [2021-06-05 22:28:01,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:28:01,757 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:28:01,757 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:28:01,757 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2021-06-05 22:28:01,757 INFO L430 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:28:01,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:28:01,757 INFO L82 PathProgramCache]: Analyzing trace with hash 982982440, now seen corresponding path program 206 times [2021-06-05 22:28:01,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:28:01,757 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125607742] [2021-06-05 22:28:01,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:28:01,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:28:01,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:28:01,940 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:28:01,940 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125607742] [2021-06-05 22:28:01,940 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125607742] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:28:01,940 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:28:01,940 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:28:01,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87960919] [2021-06-05 22:28:01,940 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:28:01,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:28:01,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:28:01,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:28:01,940 INFO L87 Difference]: Start difference. First operand 8476 states and 29981 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:28:04,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:28:04,593 INFO L93 Difference]: Finished difference Result 12162 states and 42429 transitions. [2021-06-05 22:28:04,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-06-05 22:28:04,594 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:28:04,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:28:04,615 INFO L225 Difference]: With dead ends: 12162 [2021-06-05 22:28:04,615 INFO L226 Difference]: Without dead ends: 12044 [2021-06-05 22:28:04,616 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1756 ImplicationChecksByTransitivity, 1483.0ms TimeCoverageRelationStatistics Valid=562, Invalid=5444, Unknown=0, NotChecked=0, Total=6006 [2021-06-05 22:28:04,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12044 states. [2021-06-05 22:28:04,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12044 to 8476. [2021-06-05 22:28:04,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8476 states, 8475 states have (on average 3.5368731563421827) internal successors, (29975), 8475 states have internal predecessors, (29975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:28:04,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8476 states to 8476 states and 29975 transitions. [2021-06-05 22:28:04,779 INFO L78 Accepts]: Start accepts. Automaton has 8476 states and 29975 transitions. Word has length 47 [2021-06-05 22:28:04,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:28:04,779 INFO L482 AbstractCegarLoop]: Abstraction has 8476 states and 29975 transitions. [2021-06-05 22:28:04,779 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:28:04,779 INFO L276 IsEmpty]: Start isEmpty. Operand 8476 states and 29975 transitions. [2021-06-05 22:28:04,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:28:04,791 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:28:04,791 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:28:04,791 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2021-06-05 22:28:04,791 INFO L430 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:28:04,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:28:04,791 INFO L82 PathProgramCache]: Analyzing trace with hash -825136028, now seen corresponding path program 207 times [2021-06-05 22:28:04,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:28:04,791 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751941511] [2021-06-05 22:28:04,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:28:04,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:28:04,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:28:04,975 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:28:04,975 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751941511] [2021-06-05 22:28:04,975 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751941511] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:28:04,975 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:28:04,976 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:28:04,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972680226] [2021-06-05 22:28:04,976 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:28:04,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:28:04,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:28:04,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:28:04,976 INFO L87 Difference]: Start difference. First operand 8476 states and 29975 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:28:07,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:28:07,124 INFO L93 Difference]: Finished difference Result 11549 states and 40496 transitions. [2021-06-05 22:28:07,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-05 22:28:07,125 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:28:07,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:28:07,145 INFO L225 Difference]: With dead ends: 11549 [2021-06-05 22:28:07,145 INFO L226 Difference]: Without dead ends: 11452 [2021-06-05 22:28:07,145 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1225 ImplicationChecksByTransitivity, 1209.6ms TimeCoverageRelationStatistics Valid=412, Invalid=4144, Unknown=0, NotChecked=0, Total=4556 [2021-06-05 22:28:07,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11452 states. [2021-06-05 22:28:07,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11452 to 8482. [2021-06-05 22:28:07,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8482 states, 8481 states have (on average 3.5361396061785166) internal successors, (29990), 8481 states have internal predecessors, (29990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:28:07,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8482 states to 8482 states and 29990 transitions. [2021-06-05 22:28:07,295 INFO L78 Accepts]: Start accepts. Automaton has 8482 states and 29990 transitions. Word has length 47 [2021-06-05 22:28:07,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:28:07,296 INFO L482 AbstractCegarLoop]: Abstraction has 8482 states and 29990 transitions. [2021-06-05 22:28:07,296 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:28:07,296 INFO L276 IsEmpty]: Start isEmpty. Operand 8482 states and 29990 transitions. [2021-06-05 22:28:07,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:28:07,308 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:28:07,308 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:28:07,308 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2021-06-05 22:28:07,308 INFO L430 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:28:07,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:28:07,308 INFO L82 PathProgramCache]: Analyzing trace with hash -822462202, now seen corresponding path program 208 times [2021-06-05 22:28:07,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:28:07,309 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421198925] [2021-06-05 22:28:07,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:28:07,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:28:07,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:28:07,494 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:28:07,494 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421198925] [2021-06-05 22:28:07,494 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421198925] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:28:07,494 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:28:07,494 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:28:07,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51326] [2021-06-05 22:28:07,494 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:28:07,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:28:07,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:28:07,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:28:07,495 INFO L87 Difference]: Start difference. First operand 8482 states and 29990 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:28:10,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:28:10,364 INFO L93 Difference]: Finished difference Result 12691 states and 44663 transitions. [2021-06-05 22:28:10,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-06-05 22:28:10,364 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:28:10,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:28:10,388 INFO L225 Difference]: With dead ends: 12691 [2021-06-05 22:28:10,388 INFO L226 Difference]: Without dead ends: 12582 [2021-06-05 22:28:10,388 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2059 ImplicationChecksByTransitivity, 1634.1ms TimeCoverageRelationStatistics Valid=624, Invalid=6182, Unknown=0, NotChecked=0, Total=6806 [2021-06-05 22:28:10,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12582 states. [2021-06-05 22:28:10,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12582 to 8464. [2021-06-05 22:28:10,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8464 states, 8463 states have (on average 3.5376344086021505) internal successors, (29939), 8463 states have internal predecessors, (29939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:28:10,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8464 states to 8464 states and 29939 transitions. [2021-06-05 22:28:10,548 INFO L78 Accepts]: Start accepts. Automaton has 8464 states and 29939 transitions. Word has length 47 [2021-06-05 22:28:10,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:28:10,548 INFO L482 AbstractCegarLoop]: Abstraction has 8464 states and 29939 transitions. [2021-06-05 22:28:10,548 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:28:10,548 INFO L276 IsEmpty]: Start isEmpty. Operand 8464 states and 29939 transitions. [2021-06-05 22:28:10,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:28:10,560 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:28:10,560 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:28:10,560 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2021-06-05 22:28:10,560 INFO L430 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:28:10,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:28:10,560 INFO L82 PathProgramCache]: Analyzing trace with hash -2079625564, now seen corresponding path program 209 times [2021-06-05 22:28:10,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:28:10,560 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800312490] [2021-06-05 22:28:10,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:28:10,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:28:10,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:28:10,750 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:28:10,750 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800312490] [2021-06-05 22:28:10,751 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800312490] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:28:10,751 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:28:10,751 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:28:10,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138538506] [2021-06-05 22:28:10,751 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:28:10,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:28:10,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:28:10,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:28:10,751 INFO L87 Difference]: Start difference. First operand 8464 states and 29939 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:28:14,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:28:14,153 INFO L93 Difference]: Finished difference Result 13706 states and 48281 transitions. [2021-06-05 22:28:14,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-06-05 22:28:14,154 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:28:14,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:28:14,217 INFO L225 Difference]: With dead ends: 13706 [2021-06-05 22:28:14,217 INFO L226 Difference]: Without dead ends: 13606 [2021-06-05 22:28:14,217 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2804 ImplicationChecksByTransitivity, 2067.6ms TimeCoverageRelationStatistics Valid=787, Invalid=7769, Unknown=0, NotChecked=0, Total=8556 [2021-06-05 22:28:14,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13606 states. [2021-06-05 22:28:14,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13606 to 8464. [2021-06-05 22:28:14,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8464 states, 8463 states have (on average 3.5376344086021505) internal successors, (29939), 8463 states have internal predecessors, (29939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:28:14,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8464 states to 8464 states and 29939 transitions. [2021-06-05 22:28:14,373 INFO L78 Accepts]: Start accepts. Automaton has 8464 states and 29939 transitions. Word has length 47 [2021-06-05 22:28:14,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:28:14,373 INFO L482 AbstractCegarLoop]: Abstraction has 8464 states and 29939 transitions. [2021-06-05 22:28:14,373 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:28:14,373 INFO L276 IsEmpty]: Start isEmpty. Operand 8464 states and 29939 transitions. [2021-06-05 22:28:14,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:28:14,385 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:28:14,385 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:28:14,385 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2021-06-05 22:28:14,385 INFO L430 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:28:14,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:28:14,385 INFO L82 PathProgramCache]: Analyzing trace with hash 295503622, now seen corresponding path program 210 times [2021-06-05 22:28:14,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:28:14,386 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476454110] [2021-06-05 22:28:14,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:28:14,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:28:14,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:28:14,553 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:28:14,553 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476454110] [2021-06-05 22:28:14,553 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476454110] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:28:14,553 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:28:14,553 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:28:14,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521977467] [2021-06-05 22:28:14,553 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:28:14,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:28:14,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:28:14,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:28:14,554 INFO L87 Difference]: Start difference. First operand 8464 states and 29939 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:28:18,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:28:18,080 INFO L93 Difference]: Finished difference Result 13713 states and 48385 transitions. [2021-06-05 22:28:18,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-06-05 22:28:18,081 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:28:18,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:28:18,108 INFO L225 Difference]: With dead ends: 13713 [2021-06-05 22:28:18,108 INFO L226 Difference]: Without dead ends: 13607 [2021-06-05 22:28:18,109 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3398 ImplicationChecksByTransitivity, 2184.5ms TimeCoverageRelationStatistics Valid=914, Invalid=9186, Unknown=0, NotChecked=0, Total=10100 [2021-06-05 22:28:18,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13607 states. [2021-06-05 22:28:18,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13607 to 8464. [2021-06-05 22:28:18,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8464 states, 8463 states have (on average 3.5376344086021505) internal successors, (29939), 8463 states have internal predecessors, (29939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:28:18,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8464 states to 8464 states and 29939 transitions. [2021-06-05 22:28:18,285 INFO L78 Accepts]: Start accepts. Automaton has 8464 states and 29939 transitions. Word has length 47 [2021-06-05 22:28:18,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:28:18,285 INFO L482 AbstractCegarLoop]: Abstraction has 8464 states and 29939 transitions. [2021-06-05 22:28:18,285 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:28:18,285 INFO L276 IsEmpty]: Start isEmpty. Operand 8464 states and 29939 transitions. [2021-06-05 22:28:18,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:28:18,298 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:28:18,298 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:28:18,298 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2021-06-05 22:28:18,298 INFO L430 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:28:18,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:28:18,298 INFO L82 PathProgramCache]: Analyzing trace with hash 489921222, now seen corresponding path program 211 times [2021-06-05 22:28:18,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:28:18,298 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293933858] [2021-06-05 22:28:18,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:28:18,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:28:18,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:28:18,481 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:28:18,482 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293933858] [2021-06-05 22:28:18,482 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293933858] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:28:18,482 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:28:18,482 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:28:18,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678402268] [2021-06-05 22:28:18,482 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:28:18,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:28:18,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:28:18,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:28:18,482 INFO L87 Difference]: Start difference. First operand 8464 states and 29939 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:28:22,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:28:22,240 INFO L93 Difference]: Finished difference Result 14165 states and 50052 transitions. [2021-06-05 22:28:22,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-06-05 22:28:22,241 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:28:22,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:28:22,269 INFO L225 Difference]: With dead ends: 14165 [2021-06-05 22:28:22,269 INFO L226 Difference]: Without dead ends: 14065 [2021-06-05 22:28:22,270 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3266 ImplicationChecksByTransitivity, 2293.2ms TimeCoverageRelationStatistics Valid=863, Invalid=9037, Unknown=0, NotChecked=0, Total=9900 [2021-06-05 22:28:22,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14065 states. [2021-06-05 22:28:22,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14065 to 8470. [2021-06-05 22:28:22,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8470 states, 8469 states have (on average 3.5376077458968003) internal successors, (29960), 8469 states have internal predecessors, (29960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:28:22,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8470 states to 8470 states and 29960 transitions. [2021-06-05 22:28:22,509 INFO L78 Accepts]: Start accepts. Automaton has 8470 states and 29960 transitions. Word has length 47 [2021-06-05 22:28:22,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:28:22,509 INFO L482 AbstractCegarLoop]: Abstraction has 8470 states and 29960 transitions. [2021-06-05 22:28:22,509 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:28:22,509 INFO L276 IsEmpty]: Start isEmpty. Operand 8470 states and 29960 transitions. [2021-06-05 22:28:22,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:28:22,521 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:28:22,521 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:28:22,521 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2021-06-05 22:28:22,521 INFO L430 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:28:22,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:28:22,521 INFO L82 PathProgramCache]: Analyzing trace with hash -52961722, now seen corresponding path program 212 times [2021-06-05 22:28:22,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:28:22,522 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667537656] [2021-06-05 22:28:22,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:28:22,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:28:22,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:28:22,697 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:28:22,697 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667537656] [2021-06-05 22:28:22,697 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667537656] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:28:22,697 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:28:22,697 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:28:22,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684378952] [2021-06-05 22:28:22,697 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:28:22,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:28:22,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:28:22,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:28:22,697 INFO L87 Difference]: Start difference. First operand 8470 states and 29960 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:28:25,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:28:25,706 INFO L93 Difference]: Finished difference Result 13188 states and 46503 transitions. [2021-06-05 22:28:25,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-06-05 22:28:25,706 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:28:25,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:28:25,732 INFO L225 Difference]: With dead ends: 13188 [2021-06-05 22:28:25,733 INFO L226 Difference]: Without dead ends: 13088 [2021-06-05 22:28:25,733 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2375 ImplicationChecksByTransitivity, 1751.4ms TimeCoverageRelationStatistics Valid=693, Invalid=6963, Unknown=0, NotChecked=0, Total=7656 [2021-06-05 22:28:25,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13088 states. [2021-06-05 22:28:25,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13088 to 8470. [2021-06-05 22:28:25,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8470 states, 8469 states have (on average 3.53725351281143) internal successors, (29957), 8469 states have internal predecessors, (29957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:28:25,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8470 states to 8470 states and 29957 transitions. [2021-06-05 22:28:25,892 INFO L78 Accepts]: Start accepts. Automaton has 8470 states and 29957 transitions. Word has length 47 [2021-06-05 22:28:25,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:28:25,892 INFO L482 AbstractCegarLoop]: Abstraction has 8470 states and 29957 transitions. [2021-06-05 22:28:25,892 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:28:25,892 INFO L276 IsEmpty]: Start isEmpty. Operand 8470 states and 29957 transitions. [2021-06-05 22:28:25,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:28:25,904 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:28:25,904 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:28:25,904 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2021-06-05 22:28:25,904 INFO L430 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:28:25,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:28:25,904 INFO L82 PathProgramCache]: Analyzing trace with hash 229441064, now seen corresponding path program 213 times [2021-06-05 22:28:25,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:28:25,905 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588656053] [2021-06-05 22:28:25,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:28:25,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:28:26,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:28:26,077 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:28:26,077 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588656053] [2021-06-05 22:28:26,077 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588656053] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:28:26,077 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:28:26,077 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:28:26,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968038791] [2021-06-05 22:28:26,077 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:28:26,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:28:26,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:28:26,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:28:26,077 INFO L87 Difference]: Start difference. First operand 8470 states and 29957 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:28:29,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:28:29,899 INFO L93 Difference]: Finished difference Result 13839 states and 48810 transitions. [2021-06-05 22:28:29,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2021-06-05 22:28:29,900 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:28:29,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:28:29,928 INFO L225 Difference]: With dead ends: 13839 [2021-06-05 22:28:29,928 INFO L226 Difference]: Without dead ends: 13742 [2021-06-05 22:28:29,929 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3834 ImplicationChecksByTransitivity, 2362.1ms TimeCoverageRelationStatistics Valid=985, Invalid=10357, Unknown=0, NotChecked=0, Total=11342 [2021-06-05 22:28:29,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13742 states. [2021-06-05 22:28:30,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13742 to 8476. [2021-06-05 22:28:30,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8476 states, 8475 states have (on average 3.536519174041298) internal successors, (29972), 8475 states have internal predecessors, (29972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:28:30,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8476 states to 8476 states and 29972 transitions. [2021-06-05 22:28:30,101 INFO L78 Accepts]: Start accepts. Automaton has 8476 states and 29972 transitions. Word has length 47 [2021-06-05 22:28:30,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:28:30,101 INFO L482 AbstractCegarLoop]: Abstraction has 8476 states and 29972 transitions. [2021-06-05 22:28:30,101 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:28:30,101 INFO L276 IsEmpty]: Start isEmpty. Operand 8476 states and 29972 transitions. [2021-06-05 22:28:30,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:28:30,114 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:28:30,114 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:28:30,114 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2021-06-05 22:28:30,114 INFO L430 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:28:30,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:28:30,114 INFO L82 PathProgramCache]: Analyzing trace with hash 312329670, now seen corresponding path program 214 times [2021-06-05 22:28:30,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:28:30,114 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603174063] [2021-06-05 22:28:30,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:28:30,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:28:30,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:28:30,297 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:28:30,297 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603174063] [2021-06-05 22:28:30,297 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603174063] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:28:30,297 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:28:30,297 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:28:30,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039651368] [2021-06-05 22:28:30,298 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:28:30,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:28:30,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:28:30,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:28:30,298 INFO L87 Difference]: Start difference. First operand 8476 states and 29972 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:28:33,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:28:33,657 INFO L93 Difference]: Finished difference Result 13196 states and 46675 transitions. [2021-06-05 22:28:33,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-06-05 22:28:33,657 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:28:33,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:28:33,681 INFO L225 Difference]: With dead ends: 13196 [2021-06-05 22:28:33,682 INFO L226 Difference]: Without dead ends: 13090 [2021-06-05 22:28:33,682 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2638 ImplicationChecksByTransitivity, 1864.5ms TimeCoverageRelationStatistics Valid=778, Invalid=7594, Unknown=0, NotChecked=0, Total=8372 [2021-06-05 22:28:33,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13090 states. [2021-06-05 22:28:33,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13090 to 8461. [2021-06-05 22:28:33,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8461 states, 8460 states have (on average 3.5386524822695034) internal successors, (29937), 8460 states have internal predecessors, (29937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:28:33,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8461 states to 8461 states and 29937 transitions. [2021-06-05 22:28:33,841 INFO L78 Accepts]: Start accepts. Automaton has 8461 states and 29937 transitions. Word has length 47 [2021-06-05 22:28:33,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:28:33,841 INFO L482 AbstractCegarLoop]: Abstraction has 8461 states and 29937 transitions. [2021-06-05 22:28:33,841 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:28:33,841 INFO L276 IsEmpty]: Start isEmpty. Operand 8461 states and 29937 transitions. [2021-06-05 22:28:33,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:28:33,853 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:28:33,853 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:28:33,853 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2021-06-05 22:28:33,853 INFO L430 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:28:33,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:28:33,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1251011056, now seen corresponding path program 215 times [2021-06-05 22:28:33,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:28:33,853 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14099075] [2021-06-05 22:28:33,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:28:33,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:28:34,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:28:34,026 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:28:34,026 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14099075] [2021-06-05 22:28:34,026 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14099075] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:28:34,026 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:28:34,027 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:28:34,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974489343] [2021-06-05 22:28:34,027 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:28:34,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:28:34,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:28:34,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:28:34,027 INFO L87 Difference]: Start difference. First operand 8461 states and 29937 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:28:39,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:28:39,411 INFO L93 Difference]: Finished difference Result 18918 states and 66580 transitions. [2021-06-05 22:28:39,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2021-06-05 22:28:39,412 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:28:39,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:28:39,444 INFO L225 Difference]: With dead ends: 18918 [2021-06-05 22:28:39,444 INFO L226 Difference]: Without dead ends: 18520 [2021-06-05 22:28:39,446 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8268 ImplicationChecksByTransitivity, 3306.2ms TimeCoverageRelationStatistics Valid=1605, Invalid=20151, Unknown=0, NotChecked=0, Total=21756 [2021-06-05 22:28:39,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18520 states. [2021-06-05 22:28:39,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18520 to 8861. [2021-06-05 22:28:39,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8861 states, 8860 states have (on average 3.550338600451467) internal successors, (31456), 8860 states have internal predecessors, (31456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:28:39,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8861 states to 8861 states and 31456 transitions. [2021-06-05 22:28:39,646 INFO L78 Accepts]: Start accepts. Automaton has 8861 states and 31456 transitions. Word has length 47 [2021-06-05 22:28:39,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:28:39,646 INFO L482 AbstractCegarLoop]: Abstraction has 8861 states and 31456 transitions. [2021-06-05 22:28:39,646 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:28:39,646 INFO L276 IsEmpty]: Start isEmpty. Operand 8861 states and 31456 transitions. [2021-06-05 22:28:39,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:28:39,659 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:28:39,659 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:28:39,659 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2021-06-05 22:28:39,659 INFO L430 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:28:39,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:28:39,659 INFO L82 PathProgramCache]: Analyzing trace with hash -861610418, now seen corresponding path program 216 times [2021-06-05 22:28:39,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:28:39,659 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586077298] [2021-06-05 22:28:39,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:28:39,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:28:39,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:28:39,862 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:28:39,862 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586077298] [2021-06-05 22:28:39,862 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586077298] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:28:39,862 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:28:39,862 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:28:39,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745658014] [2021-06-05 22:28:39,862 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:28:39,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:28:39,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:28:39,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:28:39,862 INFO L87 Difference]: Start difference. First operand 8861 states and 31456 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:28:45,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:28:45,749 INFO L93 Difference]: Finished difference Result 19219 states and 67529 transitions. [2021-06-05 22:28:45,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2021-06-05 22:28:45,750 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:28:45,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:28:45,784 INFO L225 Difference]: With dead ends: 19219 [2021-06-05 22:28:45,784 INFO L226 Difference]: Without dead ends: 18578 [2021-06-05 22:28:45,785 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10253 ImplicationChecksByTransitivity, 3850.6ms TimeCoverageRelationStatistics Valid=1892, Invalid=24514, Unknown=0, NotChecked=0, Total=26406 [2021-06-05 22:28:45,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18578 states. [2021-06-05 22:28:45,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18578 to 9098. [2021-06-05 22:28:45,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9098 states, 9097 states have (on average 3.553369242607453) internal successors, (32325), 9097 states have internal predecessors, (32325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:28:45,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9098 states to 9098 states and 32325 transitions. [2021-06-05 22:28:45,999 INFO L78 Accepts]: Start accepts. Automaton has 9098 states and 32325 transitions. Word has length 47 [2021-06-05 22:28:45,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:28:46,000 INFO L482 AbstractCegarLoop]: Abstraction has 9098 states and 32325 transitions. [2021-06-05 22:28:46,000 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:28:46,000 INFO L276 IsEmpty]: Start isEmpty. Operand 9098 states and 32325 transitions. [2021-06-05 22:28:46,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:28:46,013 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:28:46,013 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:28:46,013 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2021-06-05 22:28:46,013 INFO L430 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:28:46,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:28:46,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1417196174, now seen corresponding path program 217 times [2021-06-05 22:28:46,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:28:46,014 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14444442] [2021-06-05 22:28:46,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:28:46,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:28:46,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:28:46,190 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:28:46,190 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14444442] [2021-06-05 22:28:46,190 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14444442] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:28:46,190 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:28:46,190 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:28:46,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792420690] [2021-06-05 22:28:46,190 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:28:46,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:28:46,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:28:46,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:28:46,191 INFO L87 Difference]: Start difference. First operand 9098 states and 32325 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:28:51,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:28:51,910 INFO L93 Difference]: Finished difference Result 21701 states and 76586 transitions. [2021-06-05 22:28:51,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2021-06-05 22:28:51,911 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:28:51,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:28:51,948 INFO L225 Difference]: With dead ends: 21701 [2021-06-05 22:28:51,948 INFO L226 Difference]: Without dead ends: 21223 [2021-06-05 22:28:51,949 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9038 ImplicationChecksByTransitivity, 3566.7ms TimeCoverageRelationStatistics Valid=1648, Invalid=21914, Unknown=0, NotChecked=0, Total=23562 [2021-06-05 22:28:51,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21223 states. [2021-06-05 22:28:52,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21223 to 9359. [2021-06-05 22:28:52,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9359 states, 9358 states have (on average 3.5555674289378074) internal successors, (33273), 9358 states have internal predecessors, (33273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:28:52,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9359 states to 9359 states and 33273 transitions. [2021-06-05 22:28:52,173 INFO L78 Accepts]: Start accepts. Automaton has 9359 states and 33273 transitions. Word has length 47 [2021-06-05 22:28:52,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:28:52,173 INFO L482 AbstractCegarLoop]: Abstraction has 9359 states and 33273 transitions. [2021-06-05 22:28:52,173 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:28:52,173 INFO L276 IsEmpty]: Start isEmpty. Operand 9359 states and 33273 transitions. [2021-06-05 22:28:52,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:28:52,187 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:28:52,187 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:28:52,188 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2021-06-05 22:28:52,188 INFO L430 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:28:52,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:28:52,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1625508982, now seen corresponding path program 218 times [2021-06-05 22:28:52,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:28:52,188 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561695020] [2021-06-05 22:28:52,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:28:52,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:28:52,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:28:52,364 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:28:52,364 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561695020] [2021-06-05 22:28:52,364 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561695020] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:28:52,364 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:28:52,364 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:28:52,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056808875] [2021-06-05 22:28:52,365 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:28:52,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:28:52,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:28:52,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:28:52,365 INFO L87 Difference]: Start difference. First operand 9359 states and 33273 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:28:56,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:28:56,722 INFO L93 Difference]: Finished difference Result 19224 states and 68517 transitions. [2021-06-05 22:28:56,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2021-06-05 22:28:56,722 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:28:56,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:28:56,758 INFO L225 Difference]: With dead ends: 19224 [2021-06-05 22:28:56,758 INFO L226 Difference]: Without dead ends: 19124 [2021-06-05 22:28:56,759 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4974 ImplicationChecksByTransitivity, 2575.8ms TimeCoverageRelationStatistics Valid=1059, Invalid=12983, Unknown=0, NotChecked=0, Total=14042 [2021-06-05 22:28:56,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19124 states. [2021-06-05 22:28:56,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19124 to 9553. [2021-06-05 22:28:56,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9553 states, 9552 states have (on average 3.5583123953098825) internal successors, (33989), 9552 states have internal predecessors, (33989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:28:56,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9553 states to 9553 states and 33989 transitions. [2021-06-05 22:28:56,977 INFO L78 Accepts]: Start accepts. Automaton has 9553 states and 33989 transitions. Word has length 47 [2021-06-05 22:28:56,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:28:56,977 INFO L482 AbstractCegarLoop]: Abstraction has 9553 states and 33989 transitions. [2021-06-05 22:28:56,977 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:28:56,977 INFO L276 IsEmpty]: Start isEmpty. Operand 9553 states and 33989 transitions. [2021-06-05 22:28:56,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:28:56,991 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:28:56,991 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:28:56,991 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2021-06-05 22:28:56,991 INFO L430 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:28:56,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:28:56,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1691571540, now seen corresponding path program 219 times [2021-06-05 22:28:56,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:28:56,991 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666712873] [2021-06-05 22:28:56,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:28:56,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:28:57,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:28:57,167 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:28:57,168 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666712873] [2021-06-05 22:28:57,168 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666712873] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:28:57,168 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:28:57,168 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:28:57,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266473438] [2021-06-05 22:28:57,168 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:28:57,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:28:57,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:28:57,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:28:57,168 INFO L87 Difference]: Start difference. First operand 9553 states and 33989 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:29:03,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:29:03,189 INFO L93 Difference]: Finished difference Result 22955 states and 81467 transitions. [2021-06-05 22:29:03,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2021-06-05 22:29:03,189 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:29:03,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:29:03,230 INFO L225 Difference]: With dead ends: 22955 [2021-06-05 22:29:03,230 INFO L226 Difference]: Without dead ends: 22705 [2021-06-05 22:29:03,232 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9441 ImplicationChecksByTransitivity, 3595.3ms TimeCoverageRelationStatistics Valid=1670, Invalid=22822, Unknown=0, NotChecked=0, Total=24492 [2021-06-05 22:29:03,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22705 states. [2021-06-05 22:29:03,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22705 to 9570. [2021-06-05 22:29:03,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9570 states, 9569 states have (on average 3.558992580206918) internal successors, (34056), 9569 states have internal predecessors, (34056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:29:03,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9570 states to 9570 states and 34056 transitions. [2021-06-05 22:29:03,475 INFO L78 Accepts]: Start accepts. Automaton has 9570 states and 34056 transitions. Word has length 47 [2021-06-05 22:29:03,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:29:03,475 INFO L482 AbstractCegarLoop]: Abstraction has 9570 states and 34056 transitions. [2021-06-05 22:29:03,475 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:29:03,475 INFO L276 IsEmpty]: Start isEmpty. Operand 9570 states and 34056 transitions. [2021-06-05 22:29:03,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:29:03,488 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:29:03,488 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:29:03,488 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2021-06-05 22:29:03,488 INFO L430 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:29:03,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:29:03,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1836254228, now seen corresponding path program 220 times [2021-06-05 22:29:03,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:29:03,489 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450976306] [2021-06-05 22:29:03,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:29:03,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:29:03,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:29:03,664 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:29:03,664 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450976306] [2021-06-05 22:29:03,664 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450976306] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:29:03,664 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:29:03,664 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:29:03,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765589419] [2021-06-05 22:29:03,664 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:29:03,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:29:03,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:29:03,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:29:03,664 INFO L87 Difference]: Start difference. First operand 9570 states and 34056 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:29:10,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:29:10,035 INFO L93 Difference]: Finished difference Result 20403 states and 72081 transitions. [2021-06-05 22:29:10,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2021-06-05 22:29:10,035 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:29:10,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:29:10,075 INFO L225 Difference]: With dead ends: 20403 [2021-06-05 22:29:10,075 INFO L226 Difference]: Without dead ends: 20020 [2021-06-05 22:29:10,076 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11541 ImplicationChecksByTransitivity, 4218.1ms TimeCoverageRelationStatistics Valid=1955, Invalid=27457, Unknown=0, NotChecked=0, Total=29412 [2021-06-05 22:29:10,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20020 states. [2021-06-05 22:29:10,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20020 to 9545. [2021-06-05 22:29:10,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9545 states, 9544 states have (on average 3.5585708298407375) internal successors, (33963), 9544 states have internal predecessors, (33963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:29:10,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9545 states to 9545 states and 33963 transitions. [2021-06-05 22:29:10,317 INFO L78 Accepts]: Start accepts. Automaton has 9545 states and 33963 transitions. Word has length 47 [2021-06-05 22:29:10,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:29:10,317 INFO L482 AbstractCegarLoop]: Abstraction has 9545 states and 33963 transitions. [2021-06-05 22:29:10,318 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:29:10,318 INFO L276 IsEmpty]: Start isEmpty. Operand 9545 states and 33963 transitions. [2021-06-05 22:29:10,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:29:10,332 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:29:10,332 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:29:10,332 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2021-06-05 22:29:10,332 INFO L430 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:29:10,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:29:10,333 INFO L82 PathProgramCache]: Analyzing trace with hash 195709066, now seen corresponding path program 221 times [2021-06-05 22:29:10,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:29:10,333 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181526115] [2021-06-05 22:29:10,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:29:10,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:29:10,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:29:10,511 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:29:10,511 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181526115] [2021-06-05 22:29:10,511 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181526115] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:29:10,511 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:29:10,511 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:29:10,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966246307] [2021-06-05 22:29:10,511 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:29:10,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:29:10,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:29:10,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:29:10,511 INFO L87 Difference]: Start difference. First operand 9545 states and 33963 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:29:14,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:29:14,955 INFO L93 Difference]: Finished difference Result 19152 states and 68026 transitions. [2021-06-05 22:29:14,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2021-06-05 22:29:14,956 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:29:14,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:29:14,992 INFO L225 Difference]: With dead ends: 19152 [2021-06-05 22:29:14,992 INFO L226 Difference]: Without dead ends: 19055 [2021-06-05 22:29:14,993 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5563 ImplicationChecksByTransitivity, 2656.9ms TimeCoverageRelationStatistics Valid=1117, Invalid=14383, Unknown=0, NotChecked=0, Total=15500 [2021-06-05 22:29:15,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19055 states. [2021-06-05 22:29:15,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19055 to 9571. [2021-06-05 22:29:15,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9571 states, 9570 states have (on average 3.5573667711598747) internal successors, (34044), 9570 states have internal predecessors, (34044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:29:15,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9571 states to 9571 states and 34044 transitions. [2021-06-05 22:29:15,229 INFO L78 Accepts]: Start accepts. Automaton has 9571 states and 34044 transitions. Word has length 47 [2021-06-05 22:29:15,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:29:15,229 INFO L482 AbstractCegarLoop]: Abstraction has 9571 states and 34044 transitions. [2021-06-05 22:29:15,229 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:29:15,229 INFO L276 IsEmpty]: Start isEmpty. Operand 9571 states and 34044 transitions. [2021-06-05 22:29:15,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:29:15,243 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:29:15,243 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:29:15,244 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2021-06-05 22:29:15,244 INFO L430 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:29:15,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:29:15,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1529711444, now seen corresponding path program 222 times [2021-06-05 22:29:15,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:29:15,244 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729035903] [2021-06-05 22:29:15,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:29:15,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:29:15,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:29:15,466 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:29:15,466 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729035903] [2021-06-05 22:29:15,466 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729035903] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:29:15,466 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:29:15,466 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:29:15,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806373246] [2021-06-05 22:29:15,466 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:29:15,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:29:15,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:29:15,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:29:15,466 INFO L87 Difference]: Start difference. First operand 9571 states and 34044 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:29:21,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:29:21,888 INFO L93 Difference]: Finished difference Result 22580 states and 80326 transitions. [2021-06-05 22:29:21,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2021-06-05 22:29:21,888 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:29:21,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:29:21,930 INFO L225 Difference]: With dead ends: 22580 [2021-06-05 22:29:21,931 INFO L226 Difference]: Without dead ends: 22397 [2021-06-05 22:29:21,932 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11066 ImplicationChecksByTransitivity, 3962.7ms TimeCoverageRelationStatistics Valid=1920, Invalid=26472, Unknown=0, NotChecked=0, Total=28392 [2021-06-05 22:29:21,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22397 states. [2021-06-05 22:29:22,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22397 to 9738. [2021-06-05 22:29:22,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9738 states, 9737 states have (on average 3.561055766663243) internal successors, (34674), 9737 states have internal predecessors, (34674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:29:22,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9738 states to 9738 states and 34674 transitions. [2021-06-05 22:29:22,188 INFO L78 Accepts]: Start accepts. Automaton has 9738 states and 34674 transitions. Word has length 47 [2021-06-05 22:29:22,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:29:22,188 INFO L482 AbstractCegarLoop]: Abstraction has 9738 states and 34674 transitions. [2021-06-05 22:29:22,188 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:29:22,188 INFO L276 IsEmpty]: Start isEmpty. Operand 9738 states and 34674 transitions. [2021-06-05 22:29:22,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:29:22,248 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:29:22,248 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:29:22,248 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2021-06-05 22:29:22,248 INFO L430 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:29:22,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:29:22,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1756901096, now seen corresponding path program 223 times [2021-06-05 22:29:22,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:29:22,248 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449414331] [2021-06-05 22:29:22,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:29:22,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:29:22,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:29:22,410 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:29:22,411 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449414331] [2021-06-05 22:29:22,411 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449414331] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:29:22,411 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:29:22,411 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:29:22,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483956260] [2021-06-05 22:29:22,411 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:29:22,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:29:22,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:29:22,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:29:22,411 INFO L87 Difference]: Start difference. First operand 9738 states and 34674 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:29:25,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:29:25,651 INFO L93 Difference]: Finished difference Result 15750 states and 56134 transitions. [2021-06-05 22:29:25,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-06-05 22:29:25,651 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:29:25,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:29:25,682 INFO L225 Difference]: With dead ends: 15750 [2021-06-05 22:29:25,683 INFO L226 Difference]: Without dead ends: 15549 [2021-06-05 22:29:25,684 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2935 ImplicationChecksByTransitivity, 1775.5ms TimeCoverageRelationStatistics Valid=746, Invalid=7996, Unknown=0, NotChecked=0, Total=8742 [2021-06-05 22:29:25,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15549 states. [2021-06-05 22:29:25,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15549 to 10126. [2021-06-05 22:29:25,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10126 states, 10125 states have (on average 3.5689876543209875) internal successors, (36136), 10125 states have internal predecessors, (36136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:29:25,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10126 states to 10126 states and 36136 transitions. [2021-06-05 22:29:25,909 INFO L78 Accepts]: Start accepts. Automaton has 10126 states and 36136 transitions. Word has length 47 [2021-06-05 22:29:25,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:29:25,909 INFO L482 AbstractCegarLoop]: Abstraction has 10126 states and 36136 transitions. [2021-06-05 22:29:25,909 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:29:25,909 INFO L276 IsEmpty]: Start isEmpty. Operand 10126 states and 36136 transitions. [2021-06-05 22:29:25,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:29:25,923 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:29:25,923 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:29:25,923 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2021-06-05 22:29:25,923 INFO L430 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:29:25,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:29:25,924 INFO L82 PathProgramCache]: Analyzing trace with hash -903472472, now seen corresponding path program 224 times [2021-06-05 22:29:25,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:29:25,924 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463713191] [2021-06-05 22:29:25,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:29:25,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:29:26,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:29:26,096 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:29:26,096 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463713191] [2021-06-05 22:29:26,096 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463713191] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:29:26,096 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:29:26,096 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:29:26,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616616089] [2021-06-05 22:29:26,097 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:29:26,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:29:26,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:29:26,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:29:26,097 INFO L87 Difference]: Start difference. First operand 10126 states and 36136 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:29:30,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:29:30,216 INFO L93 Difference]: Finished difference Result 17140 states and 60885 transitions. [2021-06-05 22:29:30,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2021-06-05 22:29:30,216 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:29:30,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:29:30,248 INFO L225 Difference]: With dead ends: 17140 [2021-06-05 22:29:30,248 INFO L226 Difference]: Without dead ends: 16867 [2021-06-05 22:29:30,249 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4637 ImplicationChecksByTransitivity, 2350.2ms TimeCoverageRelationStatistics Valid=963, Invalid=12147, Unknown=0, NotChecked=0, Total=13110 [2021-06-05 22:29:30,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16867 states. [2021-06-05 22:29:30,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16867 to 10162. [2021-06-05 22:29:30,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10162 states, 10161 states have (on average 3.571400452711347) internal successors, (36289), 10161 states have internal predecessors, (36289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:29:30,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10162 states to 10162 states and 36289 transitions. [2021-06-05 22:29:30,451 INFO L78 Accepts]: Start accepts. Automaton has 10162 states and 36289 transitions. Word has length 47 [2021-06-05 22:29:30,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:29:30,451 INFO L482 AbstractCegarLoop]: Abstraction has 10162 states and 36289 transitions. [2021-06-05 22:29:30,451 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:29:30,451 INFO L276 IsEmpty]: Start isEmpty. Operand 10162 states and 36289 transitions. [2021-06-05 22:29:30,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:29:30,465 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:29:30,465 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:29:30,465 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2021-06-05 22:29:30,465 INFO L430 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:29:30,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:29:30,465 INFO L82 PathProgramCache]: Analyzing trace with hash 690144842, now seen corresponding path program 225 times [2021-06-05 22:29:30,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:29:30,465 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253975759] [2021-06-05 22:29:30,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:29:30,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:29:30,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:29:30,624 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:29:30,624 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253975759] [2021-06-05 22:29:30,624 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253975759] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:29:30,624 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:29:30,624 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:29:30,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882387756] [2021-06-05 22:29:30,624 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:29:30,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:29:30,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:29:30,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:29:30,624 INFO L87 Difference]: Start difference. First operand 10162 states and 36289 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:29:33,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:29:33,797 INFO L93 Difference]: Finished difference Result 15565 states and 55467 transitions. [2021-06-05 22:29:33,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-06-05 22:29:33,798 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:29:33,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:29:33,828 INFO L225 Difference]: With dead ends: 15565 [2021-06-05 22:29:33,828 INFO L226 Difference]: Without dead ends: 15364 [2021-06-05 22:29:33,829 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3167 ImplicationChecksByTransitivity, 1817.9ms TimeCoverageRelationStatistics Valid=780, Invalid=8532, Unknown=0, NotChecked=0, Total=9312 [2021-06-05 22:29:33,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15364 states. [2021-06-05 22:29:33,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15364 to 10162. [2021-06-05 22:29:34,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10162 states, 10161 states have (on average 3.571400452711347) internal successors, (36289), 10161 states have internal predecessors, (36289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:29:34,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10162 states to 10162 states and 36289 transitions. [2021-06-05 22:29:34,031 INFO L78 Accepts]: Start accepts. Automaton has 10162 states and 36289 transitions. Word has length 47 [2021-06-05 22:29:34,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:29:34,031 INFO L482 AbstractCegarLoop]: Abstraction has 10162 states and 36289 transitions. [2021-06-05 22:29:34,031 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:29:34,031 INFO L276 IsEmpty]: Start isEmpty. Operand 10162 states and 36289 transitions. [2021-06-05 22:29:34,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:29:34,046 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:29:34,046 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:29:34,047 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2021-06-05 22:29:34,047 INFO L430 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:29:34,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:29:34,047 INFO L82 PathProgramCache]: Analyzing trace with hash 2058574504, now seen corresponding path program 226 times [2021-06-05 22:29:34,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:29:34,047 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458918933] [2021-06-05 22:29:34,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:29:34,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:29:34,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:29:34,243 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:29:34,243 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458918933] [2021-06-05 22:29:34,243 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458918933] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:29:34,243 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:29:34,244 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:29:34,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853203498] [2021-06-05 22:29:34,244 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:29:34,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:29:34,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:29:34,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:29:34,244 INFO L87 Difference]: Start difference. First operand 10162 states and 36289 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:29:39,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:29:39,816 INFO L93 Difference]: Finished difference Result 19321 states and 68760 transitions. [2021-06-05 22:29:39,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2021-06-05 22:29:39,816 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:29:39,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:29:39,852 INFO L225 Difference]: With dead ends: 19321 [2021-06-05 22:29:39,853 INFO L226 Difference]: Without dead ends: 18685 [2021-06-05 22:29:39,854 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8417 ImplicationChecksByTransitivity, 3405.5ms TimeCoverageRelationStatistics Valid=1546, Invalid=20506, Unknown=0, NotChecked=0, Total=22052 [2021-06-05 22:29:39,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18685 states. [2021-06-05 22:29:40,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18685 to 10501. [2021-06-05 22:29:40,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10501 states, 10500 states have (on average 3.570952380952381) internal successors, (37495), 10500 states have internal predecessors, (37495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:29:40,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10501 states to 10501 states and 37495 transitions. [2021-06-05 22:29:40,084 INFO L78 Accepts]: Start accepts. Automaton has 10501 states and 37495 transitions. Word has length 47 [2021-06-05 22:29:40,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:29:40,084 INFO L482 AbstractCegarLoop]: Abstraction has 10501 states and 37495 transitions. [2021-06-05 22:29:40,084 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:29:40,084 INFO L276 IsEmpty]: Start isEmpty. Operand 10501 states and 37495 transitions. [2021-06-05 22:29:40,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:29:40,099 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:29:40,099 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:29:40,099 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2021-06-05 22:29:40,099 INFO L430 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:29:40,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:29:40,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1681294838, now seen corresponding path program 227 times [2021-06-05 22:29:40,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:29:40,100 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744692664] [2021-06-05 22:29:40,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:29:40,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:29:40,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:29:40,265 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:29:40,265 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744692664] [2021-06-05 22:29:40,265 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744692664] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:29:40,265 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:29:40,265 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:29:40,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635393568] [2021-06-05 22:29:40,265 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:29:40,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:29:40,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:29:40,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:29:40,265 INFO L87 Difference]: Start difference. First operand 10501 states and 37495 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:29:44,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:29:44,349 INFO L93 Difference]: Finished difference Result 17680 states and 63164 transitions. [2021-06-05 22:29:44,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2021-06-05 22:29:44,350 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:29:44,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:29:44,382 INFO L225 Difference]: With dead ends: 17680 [2021-06-05 22:29:44,383 INFO L226 Difference]: Without dead ends: 17406 [2021-06-05 22:29:44,383 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4315 ImplicationChecksByTransitivity, 2320.6ms TimeCoverageRelationStatistics Valid=990, Invalid=11220, Unknown=0, NotChecked=0, Total=12210 [2021-06-05 22:29:44,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17406 states. [2021-06-05 22:29:44,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17406 to 10660. [2021-06-05 22:29:44,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10660 states, 10659 states have (on average 3.5705037996059668) internal successors, (38058), 10659 states have internal predecessors, (38058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:29:44,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10660 states to 10660 states and 38058 transitions. [2021-06-05 22:29:44,608 INFO L78 Accepts]: Start accepts. Automaton has 10660 states and 38058 transitions. Word has length 47 [2021-06-05 22:29:44,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:29:44,608 INFO L482 AbstractCegarLoop]: Abstraction has 10660 states and 38058 transitions. [2021-06-05 22:29:44,608 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:29:44,608 INFO L276 IsEmpty]: Start isEmpty. Operand 10660 states and 38058 transitions. [2021-06-05 22:29:44,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:29:44,624 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:29:44,624 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:29:44,624 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2021-06-05 22:29:44,625 INFO L430 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:29:44,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:29:44,625 INFO L82 PathProgramCache]: Analyzing trace with hash -46701110, now seen corresponding path program 228 times [2021-06-05 22:29:44,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:29:44,625 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167925859] [2021-06-05 22:29:44,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:29:44,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:29:44,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:29:44,825 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:29:44,825 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167925859] [2021-06-05 22:29:44,825 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167925859] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:29:44,825 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:29:44,825 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:29:44,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620028702] [2021-06-05 22:29:44,825 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:29:44,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:29:44,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:29:44,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:29:44,826 INFO L87 Difference]: Start difference. First operand 10660 states and 38058 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:29:49,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:29:49,905 INFO L93 Difference]: Finished difference Result 18986 states and 67756 transitions. [2021-06-05 22:29:49,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2021-06-05 22:29:49,905 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:29:49,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:29:49,941 INFO L225 Difference]: With dead ends: 18986 [2021-06-05 22:29:49,941 INFO L226 Difference]: Without dead ends: 18819 [2021-06-05 22:29:49,941 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6497 ImplicationChecksByTransitivity, 2880.7ms TimeCoverageRelationStatistics Valid=1214, Invalid=16342, Unknown=0, NotChecked=0, Total=17556 [2021-06-05 22:29:49,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18819 states. [2021-06-05 22:29:50,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18819 to 10806. [2021-06-05 22:29:50,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10806 states, 10805 states have (on average 3.5742711707542805) internal successors, (38620), 10805 states have internal predecessors, (38620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:29:50,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10806 states to 10806 states and 38620 transitions. [2021-06-05 22:29:50,180 INFO L78 Accepts]: Start accepts. Automaton has 10806 states and 38620 transitions. Word has length 47 [2021-06-05 22:29:50,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:29:50,180 INFO L482 AbstractCegarLoop]: Abstraction has 10806 states and 38620 transitions. [2021-06-05 22:29:50,180 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:29:50,180 INFO L276 IsEmpty]: Start isEmpty. Operand 10806 states and 38620 transitions. [2021-06-05 22:29:50,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:29:50,195 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:29:50,195 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:29:50,195 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2021-06-05 22:29:50,195 INFO L430 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:29:50,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:29:50,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1554866156, now seen corresponding path program 229 times [2021-06-05 22:29:50,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:29:50,196 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998269893] [2021-06-05 22:29:50,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:29:50,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:29:50,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:29:50,388 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:29:50,388 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998269893] [2021-06-05 22:29:50,388 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998269893] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:29:50,388 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:29:50,388 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:29:50,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592291878] [2021-06-05 22:29:50,389 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:29:50,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:29:50,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:29:50,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:29:50,389 INFO L87 Difference]: Start difference. First operand 10806 states and 38620 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:29:56,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:29:56,188 INFO L93 Difference]: Finished difference Result 21071 states and 75038 transitions. [2021-06-05 22:29:56,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2021-06-05 22:29:56,188 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:29:56,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:29:56,227 INFO L225 Difference]: With dead ends: 21071 [2021-06-05 22:29:56,227 INFO L226 Difference]: Without dead ends: 20812 [2021-06-05 22:29:56,229 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9198 ImplicationChecksByTransitivity, 3710.8ms TimeCoverageRelationStatistics Valid=1649, Invalid=22221, Unknown=0, NotChecked=0, Total=23870 [2021-06-05 22:29:56,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20812 states. [2021-06-05 22:29:56,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20812 to 10804. [2021-06-05 22:29:56,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10804 states, 10803 states have (on average 3.5761362584467276) internal successors, (38633), 10803 states have internal predecessors, (38633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:29:56,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10804 states to 10804 states and 38633 transitions. [2021-06-05 22:29:56,514 INFO L78 Accepts]: Start accepts. Automaton has 10804 states and 38633 transitions. Word has length 47 [2021-06-05 22:29:56,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:29:56,514 INFO L482 AbstractCegarLoop]: Abstraction has 10804 states and 38633 transitions. [2021-06-05 22:29:56,514 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:29:56,514 INFO L276 IsEmpty]: Start isEmpty. Operand 10804 states and 38633 transitions. [2021-06-05 22:29:56,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:29:56,530 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:29:56,530 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:29:56,530 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2021-06-05 22:29:56,530 INFO L430 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:29:56,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:29:56,530 INFO L82 PathProgramCache]: Analyzing trace with hash 391167208, now seen corresponding path program 230 times [2021-06-05 22:29:56,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:29:56,531 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347519465] [2021-06-05 22:29:56,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:29:56,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:29:56,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:29:56,704 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:29:56,704 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347519465] [2021-06-05 22:29:56,704 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347519465] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:29:56,704 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:29:56,704 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:29:56,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737555502] [2021-06-05 22:29:56,704 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:29:56,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:29:56,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:29:56,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:29:56,704 INFO L87 Difference]: Start difference. First operand 10804 states and 38633 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:30:03,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:30:03,158 INFO L93 Difference]: Finished difference Result 23989 states and 85930 transitions. [2021-06-05 22:30:03,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2021-06-05 22:30:03,158 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:30:03,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:30:03,202 INFO L225 Difference]: With dead ends: 23989 [2021-06-05 22:30:03,202 INFO L226 Difference]: Without dead ends: 23360 [2021-06-05 22:30:03,204 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10183 ImplicationChecksByTransitivity, 3964.3ms TimeCoverageRelationStatistics Valid=1804, Invalid=24278, Unknown=0, NotChecked=0, Total=26082 [2021-06-05 22:30:03,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23360 states. [2021-06-05 22:30:03,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23360 to 11248. [2021-06-05 22:30:03,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11248 states, 11247 states have (on average 3.5828220858895707) internal successors, (40296), 11247 states have internal predecessors, (40296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:30:03,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11248 states to 11248 states and 40296 transitions. [2021-06-05 22:30:03,509 INFO L78 Accepts]: Start accepts. Automaton has 11248 states and 40296 transitions. Word has length 47 [2021-06-05 22:30:03,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:30:03,509 INFO L482 AbstractCegarLoop]: Abstraction has 11248 states and 40296 transitions. [2021-06-05 22:30:03,509 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:30:03,509 INFO L276 IsEmpty]: Start isEmpty. Operand 11248 states and 40296 transitions. [2021-06-05 22:30:03,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:30:03,527 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:30:03,528 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:30:03,528 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2021-06-05 22:30:03,528 INFO L430 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:30:03,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:30:03,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1061863034, now seen corresponding path program 231 times [2021-06-05 22:30:03,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:30:03,528 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195862608] [2021-06-05 22:30:03,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:30:03,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:30:03,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:30:03,709 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:30:03,709 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195862608] [2021-06-05 22:30:03,709 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195862608] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:30:03,709 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:30:03,709 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:30:03,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064965859] [2021-06-05 22:30:03,709 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:30:03,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:30:03,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:30:03,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:30:03,710 INFO L87 Difference]: Start difference. First operand 11248 states and 40296 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:30:08,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:30:08,527 INFO L93 Difference]: Finished difference Result 19686 states and 70270 transitions. [2021-06-05 22:30:08,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2021-06-05 22:30:08,527 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:30:08,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:30:08,566 INFO L225 Difference]: With dead ends: 19686 [2021-06-05 22:30:08,566 INFO L226 Difference]: Without dead ends: 19212 [2021-06-05 22:30:08,567 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4707 ImplicationChecksByTransitivity, 2839.7ms TimeCoverageRelationStatistics Valid=1119, Invalid=12453, Unknown=0, NotChecked=0, Total=13572 [2021-06-05 22:30:08,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19212 states. [2021-06-05 22:30:08,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19212 to 11340. [2021-06-05 22:30:08,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11340 states, 11339 states have (on average 3.582502866213952) internal successors, (40622), 11339 states have internal predecessors, (40622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:30:08,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11340 states to 11340 states and 40622 transitions. [2021-06-05 22:30:08,824 INFO L78 Accepts]: Start accepts. Automaton has 11340 states and 40622 transitions. Word has length 47 [2021-06-05 22:30:08,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:30:08,824 INFO L482 AbstractCegarLoop]: Abstraction has 11340 states and 40622 transitions. [2021-06-05 22:30:08,824 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:30:08,824 INFO L276 IsEmpty]: Start isEmpty. Operand 11340 states and 40622 transitions. [2021-06-05 22:30:08,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:30:08,840 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:30:08,840 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:30:08,840 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2021-06-05 22:30:08,840 INFO L430 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:30:08,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:30:08,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1127925592, now seen corresponding path program 232 times [2021-06-05 22:30:08,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:30:08,840 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754119695] [2021-06-05 22:30:08,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:30:08,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:30:09,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:30:09,042 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:30:09,042 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754119695] [2021-06-05 22:30:09,042 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754119695] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:30:09,042 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:30:09,042 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:30:09,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841282916] [2021-06-05 22:30:09,042 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:30:09,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:30:09,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:30:09,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:30:09,042 INFO L87 Difference]: Start difference. First operand 11340 states and 40622 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:30:14,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:30:14,092 INFO L93 Difference]: Finished difference Result 20048 states and 71629 transitions. [2021-06-05 22:30:14,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2021-06-05 22:30:14,092 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:30:14,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:30:14,130 INFO L225 Difference]: With dead ends: 20048 [2021-06-05 22:30:14,130 INFO L226 Difference]: Without dead ends: 19715 [2021-06-05 22:30:14,130 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5753 ImplicationChecksByTransitivity, 2917.3ms TimeCoverageRelationStatistics Valid=1191, Invalid=14811, Unknown=0, NotChecked=0, Total=16002 [2021-06-05 22:30:14,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19715 states. [2021-06-05 22:30:14,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19715 to 11547. [2021-06-05 22:30:14,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11547 states, 11546 states have (on average 3.577775853109302) internal successors, (41309), 11546 states have internal predecessors, (41309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:30:14,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11547 states to 11547 states and 41309 transitions. [2021-06-05 22:30:14,394 INFO L78 Accepts]: Start accepts. Automaton has 11547 states and 41309 transitions. Word has length 47 [2021-06-05 22:30:14,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:30:14,394 INFO L482 AbstractCegarLoop]: Abstraction has 11547 states and 41309 transitions. [2021-06-05 22:30:14,394 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:30:14,394 INFO L276 IsEmpty]: Start isEmpty. Operand 11547 states and 41309 transitions. [2021-06-05 22:30:14,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:30:14,412 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:30:14,412 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:30:14,412 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2021-06-05 22:30:14,412 INFO L430 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:30:14,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:30:14,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1909387466, now seen corresponding path program 233 times [2021-06-05 22:30:14,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:30:14,412 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841714508] [2021-06-05 22:30:14,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:30:14,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:30:14,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:30:14,589 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:30:14,589 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841714508] [2021-06-05 22:30:14,589 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841714508] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:30:14,589 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:30:14,589 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:30:14,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951262100] [2021-06-05 22:30:14,589 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:30:14,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:30:14,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:30:14,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:30:14,589 INFO L87 Difference]: Start difference. First operand 11547 states and 41309 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:30:20,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:30:20,902 INFO L93 Difference]: Finished difference Result 21886 states and 78200 transitions. [2021-06-05 22:30:20,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2021-06-05 22:30:20,903 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:30:20,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:30:20,942 INFO L225 Difference]: With dead ends: 21886 [2021-06-05 22:30:20,943 INFO L226 Difference]: Without dead ends: 21403 [2021-06-05 22:30:20,943 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10020 ImplicationChecksByTransitivity, 3855.1ms TimeCoverageRelationStatistics Valid=1741, Invalid=24019, Unknown=0, NotChecked=0, Total=25760 [2021-06-05 22:30:20,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21403 states. [2021-06-05 22:30:21,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21403 to 11708. [2021-06-05 22:30:21,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11708 states, 11707 states have (on average 3.57948236098061) internal successors, (41905), 11707 states have internal predecessors, (41905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:30:21,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11708 states to 11708 states and 41905 transitions. [2021-06-05 22:30:21,216 INFO L78 Accepts]: Start accepts. Automaton has 11708 states and 41905 transitions. Word has length 47 [2021-06-05 22:30:21,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:30:21,216 INFO L482 AbstractCegarLoop]: Abstraction has 11708 states and 41905 transitions. [2021-06-05 22:30:21,216 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:30:21,216 INFO L276 IsEmpty]: Start isEmpty. Operand 11708 states and 41905 transitions. [2021-06-05 22:30:21,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:30:21,234 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:30:21,235 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:30:21,235 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2021-06-05 22:30:21,235 INFO L430 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:30:21,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:30:21,235 INFO L82 PathProgramCache]: Analyzing trace with hash -2116916500, now seen corresponding path program 234 times [2021-06-05 22:30:21,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:30:21,235 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500560698] [2021-06-05 22:30:21,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:30:21,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:30:21,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:30:21,423 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:30:21,423 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500560698] [2021-06-05 22:30:21,423 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500560698] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:30:21,423 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:30:21,423 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:30:21,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814302362] [2021-06-05 22:30:21,423 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:30:21,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:30:21,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:30:21,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:30:21,423 INFO L87 Difference]: Start difference. First operand 11708 states and 41905 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:30:28,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:30:28,739 INFO L93 Difference]: Finished difference Result 24655 states and 88051 transitions. [2021-06-05 22:30:28,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2021-06-05 22:30:28,739 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:30:28,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:30:28,785 INFO L225 Difference]: With dead ends: 24655 [2021-06-05 22:30:28,785 INFO L226 Difference]: Without dead ends: 24445 [2021-06-05 22:30:28,786 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14335 ImplicationChecksByTransitivity, 4679.9ms TimeCoverageRelationStatistics Valid=2151, Invalid=33381, Unknown=0, NotChecked=0, Total=35532 [2021-06-05 22:30:28,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24445 states. [2021-06-05 22:30:29,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24445 to 11631. [2021-06-05 22:30:29,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11631 states, 11630 states have (on average 3.5825451418744625) internal successors, (41665), 11630 states have internal predecessors, (41665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:30:29,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11631 states to 11631 states and 41665 transitions. [2021-06-05 22:30:29,089 INFO L78 Accepts]: Start accepts. Automaton has 11631 states and 41665 transitions. Word has length 47 [2021-06-05 22:30:29,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:30:29,089 INFO L482 AbstractCegarLoop]: Abstraction has 11631 states and 41665 transitions. [2021-06-05 22:30:29,089 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:30:29,089 INFO L276 IsEmpty]: Start isEmpty. Operand 11631 states and 41665 transitions. [2021-06-05 22:30:29,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:30:29,108 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:30:29,108 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:30:29,108 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2021-06-05 22:30:29,108 INFO L430 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:30:29,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:30:29,108 INFO L82 PathProgramCache]: Analyzing trace with hash -545495064, now seen corresponding path program 235 times [2021-06-05 22:30:29,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:30:29,108 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016835675] [2021-06-05 22:30:29,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:30:29,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:30:29,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:30:29,289 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:30:29,289 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016835675] [2021-06-05 22:30:29,289 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016835675] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:30:29,289 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:30:29,289 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:30:29,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821006032] [2021-06-05 22:30:29,289 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:30:29,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:30:29,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:30:29,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:30:29,289 INFO L87 Difference]: Start difference. First operand 11631 states and 41665 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:30:29,608 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 12 [2021-06-05 22:30:36,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:30:36,839 INFO L93 Difference]: Finished difference Result 25521 states and 91530 transitions. [2021-06-05 22:30:36,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2021-06-05 22:30:36,839 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:30:36,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:30:36,890 INFO L225 Difference]: With dead ends: 25521 [2021-06-05 22:30:36,890 INFO L226 Difference]: Without dead ends: 24833 [2021-06-05 22:30:36,891 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12100 ImplicationChecksByTransitivity, 4697.0ms TimeCoverageRelationStatistics Valid=1913, Invalid=28537, Unknown=0, NotChecked=0, Total=30450 [2021-06-05 22:30:36,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24833 states. [2021-06-05 22:30:37,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24833 to 12061. [2021-06-05 22:30:37,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12061 states, 12060 states have (on average 3.5893864013266996) internal successors, (43288), 12060 states have internal predecessors, (43288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:30:37,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12061 states to 12061 states and 43288 transitions. [2021-06-05 22:30:37,198 INFO L78 Accepts]: Start accepts. Automaton has 12061 states and 43288 transitions. Word has length 47 [2021-06-05 22:30:37,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:30:37,198 INFO L482 AbstractCegarLoop]: Abstraction has 12061 states and 43288 transitions. [2021-06-05 22:30:37,198 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:30:37,198 INFO L276 IsEmpty]: Start isEmpty. Operand 12061 states and 43288 transitions. [2021-06-05 22:30:37,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:30:37,216 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:30:37,216 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:30:37,216 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2021-06-05 22:30:37,216 INFO L430 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:30:37,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:30:37,217 INFO L82 PathProgramCache]: Analyzing trace with hash -246603386, now seen corresponding path program 236 times [2021-06-05 22:30:37,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:30:37,217 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521996525] [2021-06-05 22:30:37,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:30:37,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:30:37,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:30:37,413 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:30:37,413 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521996525] [2021-06-05 22:30:37,413 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521996525] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:30:37,413 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:30:37,413 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:30:37,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092781153] [2021-06-05 22:30:37,414 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:30:37,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:30:37,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:30:37,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:30:37,414 INFO L87 Difference]: Start difference. First operand 12061 states and 43288 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:30:44,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:30:44,142 INFO L93 Difference]: Finished difference Result 25860 states and 92602 transitions. [2021-06-05 22:30:44,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2021-06-05 22:30:44,143 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:30:44,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:30:44,195 INFO L225 Difference]: With dead ends: 25860 [2021-06-05 22:30:44,195 INFO L226 Difference]: Without dead ends: 25280 [2021-06-05 22:30:44,197 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11270 ImplicationChecksByTransitivity, 4291.2ms TimeCoverageRelationStatistics Valid=1932, Invalid=26798, Unknown=0, NotChecked=0, Total=28730 [2021-06-05 22:30:44,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25280 states. [2021-06-05 22:30:44,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25280 to 12784. [2021-06-05 22:30:44,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12784 states, 12783 states have (on average 3.6001721035750607) internal successors, (46021), 12783 states have internal predecessors, (46021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:30:44,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12784 states to 12784 states and 46021 transitions. [2021-06-05 22:30:44,518 INFO L78 Accepts]: Start accepts. Automaton has 12784 states and 46021 transitions. Word has length 47 [2021-06-05 22:30:44,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:30:44,518 INFO L482 AbstractCegarLoop]: Abstraction has 12784 states and 46021 transitions. [2021-06-05 22:30:44,519 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:30:44,519 INFO L276 IsEmpty]: Start isEmpty. Operand 12784 states and 46021 transitions. [2021-06-05 22:30:44,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:30:44,539 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:30:44,540 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:30:44,540 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2021-06-05 22:30:44,540 INFO L430 AbstractCegarLoop]: === Iteration 237 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:30:44,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:30:44,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1972023896, now seen corresponding path program 237 times [2021-06-05 22:30:44,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:30:44,540 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331559664] [2021-06-05 22:30:44,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:30:44,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:30:44,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:30:44,715 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:30:44,715 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331559664] [2021-06-05 22:30:44,715 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331559664] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:30:44,715 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:30:44,715 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:30:44,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400939746] [2021-06-05 22:30:44,716 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:30:44,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:30:44,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:30:44,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:30:44,716 INFO L87 Difference]: Start difference. First operand 12784 states and 46021 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:30:48,224 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 21 [2021-06-05 22:30:50,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:30:50,878 INFO L93 Difference]: Finished difference Result 25321 states and 90899 transitions. [2021-06-05 22:30:50,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2021-06-05 22:30:50,878 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:30:50,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:30:50,928 INFO L225 Difference]: With dead ends: 25321 [2021-06-05 22:30:50,928 INFO L226 Difference]: Without dead ends: 24655 [2021-06-05 22:30:50,929 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9290 ImplicationChecksByTransitivity, 3646.4ms TimeCoverageRelationStatistics Valid=1610, Invalid=22570, Unknown=0, NotChecked=0, Total=24180 [2021-06-05 22:30:50,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24655 states. [2021-06-05 22:30:51,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24655 to 12777. [2021-06-05 22:30:51,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12777 states, 12776 states have (on average 3.59815278647464) internal successors, (45970), 12776 states have internal predecessors, (45970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:30:51,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12777 states to 12777 states and 45970 transitions. [2021-06-05 22:30:51,234 INFO L78 Accepts]: Start accepts. Automaton has 12777 states and 45970 transitions. Word has length 47 [2021-06-05 22:30:51,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:30:51,234 INFO L482 AbstractCegarLoop]: Abstraction has 12777 states and 45970 transitions. [2021-06-05 22:30:51,234 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:30:51,234 INFO L276 IsEmpty]: Start isEmpty. Operand 12777 states and 45970 transitions. [2021-06-05 22:30:51,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:30:51,255 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:30:51,255 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:30:51,255 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2021-06-05 22:30:51,255 INFO L430 AbstractCegarLoop]: === Iteration 238 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:30:51,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:30:51,256 INFO L82 PathProgramCache]: Analyzing trace with hash 272455118, now seen corresponding path program 238 times [2021-06-05 22:30:51,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:30:51,256 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117250897] [2021-06-05 22:30:51,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:30:51,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:30:51,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:30:51,435 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:30:51,435 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117250897] [2021-06-05 22:30:51,435 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117250897] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:30:51,435 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:30:51,435 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:30:51,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574236553] [2021-06-05 22:30:51,435 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:30:51,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:30:51,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:30:51,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:30:51,435 INFO L87 Difference]: Start difference. First operand 12777 states and 45970 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:30:56,047 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 23 [2021-06-05 22:30:57,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:30:57,887 INFO L93 Difference]: Finished difference Result 26145 states and 93369 transitions. [2021-06-05 22:30:57,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2021-06-05 22:30:57,888 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:30:57,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:30:57,936 INFO L225 Difference]: With dead ends: 26145 [2021-06-05 22:30:57,936 INFO L226 Difference]: Without dead ends: 25741 [2021-06-05 22:30:57,938 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11311 ImplicationChecksByTransitivity, 4033.7ms TimeCoverageRelationStatistics Valid=1955, Invalid=26775, Unknown=0, NotChecked=0, Total=28730 [2021-06-05 22:30:57,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25741 states. [2021-06-05 22:30:58,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25741 to 13143. [2021-06-05 22:30:58,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13143 states, 13142 states have (on average 3.604474204839446) internal successors, (47370), 13142 states have internal predecessors, (47370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:30:58,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13143 states to 13143 states and 47370 transitions. [2021-06-05 22:30:58,229 INFO L78 Accepts]: Start accepts. Automaton has 13143 states and 47370 transitions. Word has length 47 [2021-06-05 22:30:58,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:30:58,230 INFO L482 AbstractCegarLoop]: Abstraction has 13143 states and 47370 transitions. [2021-06-05 22:30:58,230 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:30:58,230 INFO L276 IsEmpty]: Start isEmpty. Operand 13143 states and 47370 transitions. [2021-06-05 22:30:58,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:30:58,250 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:30:58,250 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:30:58,250 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2021-06-05 22:30:58,250 INFO L430 AbstractCegarLoop]: === Iteration 239 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:30:58,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:30:58,250 INFO L82 PathProgramCache]: Analyzing trace with hash 438640236, now seen corresponding path program 239 times [2021-06-05 22:30:58,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:30:58,250 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910827292] [2021-06-05 22:30:58,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:30:58,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:30:58,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:30:58,440 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:30:58,440 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910827292] [2021-06-05 22:30:58,440 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910827292] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:30:58,440 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:30:58,440 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:30:58,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903002777] [2021-06-05 22:30:58,441 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:30:58,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:30:58,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:30:58,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:30:58,441 INFO L87 Difference]: Start difference. First operand 13143 states and 47370 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:31:04,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:31:04,979 INFO L93 Difference]: Finished difference Result 27580 states and 98708 transitions. [2021-06-05 22:31:04,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2021-06-05 22:31:04,980 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:31:04,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:31:05,039 INFO L225 Difference]: With dead ends: 27580 [2021-06-05 22:31:05,039 INFO L226 Difference]: Without dead ends: 27369 [2021-06-05 22:31:05,041 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11305 ImplicationChecksByTransitivity, 4105.9ms TimeCoverageRelationStatistics Valid=1882, Invalid=26848, Unknown=0, NotChecked=0, Total=28730 [2021-06-05 22:31:05,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27369 states. [2021-06-05 22:31:05,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27369 to 13182. [2021-06-05 22:31:05,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13182 states, 13181 states have (on average 3.6034443517183825) internal successors, (47497), 13181 states have internal predecessors, (47497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:31:05,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13182 states to 13182 states and 47497 transitions. [2021-06-05 22:31:05,390 INFO L78 Accepts]: Start accepts. Automaton has 13182 states and 47497 transitions. Word has length 47 [2021-06-05 22:31:05,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:31:05,390 INFO L482 AbstractCegarLoop]: Abstraction has 13182 states and 47497 transitions. [2021-06-05 22:31:05,390 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:31:05,390 INFO L276 IsEmpty]: Start isEmpty. Operand 13182 states and 47497 transitions. [2021-06-05 22:31:05,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:31:05,412 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:31:05,412 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:31:05,412 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2021-06-05 22:31:05,412 INFO L430 AbstractCegarLoop]: === Iteration 240 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:31:05,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:31:05,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1690902376, now seen corresponding path program 240 times [2021-06-05 22:31:05,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:31:05,413 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973350779] [2021-06-05 22:31:05,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:31:05,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:31:05,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:31:05,599 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:31:05,599 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973350779] [2021-06-05 22:31:05,599 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973350779] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:31:05,599 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:31:05,599 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:31:05,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671934432] [2021-06-05 22:31:05,599 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:31:05,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:31:05,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:31:05,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:31:05,600 INFO L87 Difference]: Start difference. First operand 13182 states and 47497 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:31:11,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:31:11,367 INFO L93 Difference]: Finished difference Result 26505 states and 95211 transitions. [2021-06-05 22:31:11,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2021-06-05 22:31:11,368 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:31:11,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:31:11,423 INFO L225 Difference]: With dead ends: 26505 [2021-06-05 22:31:11,423 INFO L226 Difference]: Without dead ends: 26289 [2021-06-05 22:31:11,424 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8350 ImplicationChecksByTransitivity, 3507.1ms TimeCoverageRelationStatistics Valid=1546, Invalid=20506, Unknown=0, NotChecked=0, Total=22052 [2021-06-05 22:31:11,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26289 states. [2021-06-05 22:31:11,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26289 to 13159. [2021-06-05 22:31:11,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13159 states, 13158 states have (on average 3.6042711658306734) internal successors, (47425), 13158 states have internal predecessors, (47425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:31:11,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13159 states to 13159 states and 47425 transitions. [2021-06-05 22:31:11,755 INFO L78 Accepts]: Start accepts. Automaton has 13159 states and 47425 transitions. Word has length 47 [2021-06-05 22:31:11,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:31:11,755 INFO L482 AbstractCegarLoop]: Abstraction has 13159 states and 47425 transitions. [2021-06-05 22:31:11,755 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:31:11,755 INFO L276 IsEmpty]: Start isEmpty. Operand 13159 states and 47425 transitions. [2021-06-05 22:31:11,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:31:11,776 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:31:11,776 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:31:11,776 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2021-06-05 22:31:11,776 INFO L430 AbstractCegarLoop]: === Iteration 241 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:31:11,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:31:11,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1624839818, now seen corresponding path program 241 times [2021-06-05 22:31:11,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:31:11,776 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168510475] [2021-06-05 22:31:11,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:31:11,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:31:11,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:31:11,954 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:31:11,954 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168510475] [2021-06-05 22:31:11,954 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168510475] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:31:11,954 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:31:11,954 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:31:11,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603024551] [2021-06-05 22:31:11,954 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:31:11,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:31:11,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:31:11,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:31:11,955 INFO L87 Difference]: Start difference. First operand 13159 states and 47425 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:31:17,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:31:17,969 INFO L93 Difference]: Finished difference Result 28288 states and 101489 transitions. [2021-06-05 22:31:17,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2021-06-05 22:31:17,969 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:31:17,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:31:18,026 INFO L225 Difference]: With dead ends: 28288 [2021-06-05 22:31:18,027 INFO L226 Difference]: Without dead ends: 27918 [2021-06-05 22:31:18,028 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9193 ImplicationChecksByTransitivity, 3502.9ms TimeCoverageRelationStatistics Valid=1582, Invalid=22288, Unknown=0, NotChecked=0, Total=23870 [2021-06-05 22:31:18,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27918 states. [2021-06-05 22:31:18,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27918 to 13174. [2021-06-05 22:31:18,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13174 states, 13173 states have (on average 3.6044940408411144) internal successors, (47482), 13173 states have internal predecessors, (47482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:31:18,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13174 states to 13174 states and 47482 transitions. [2021-06-05 22:31:18,364 INFO L78 Accepts]: Start accepts. Automaton has 13174 states and 47482 transitions. Word has length 47 [2021-06-05 22:31:18,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:31:18,364 INFO L482 AbstractCegarLoop]: Abstraction has 13174 states and 47482 transitions. [2021-06-05 22:31:18,365 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:31:18,365 INFO L276 IsEmpty]: Start isEmpty. Operand 13174 states and 47482 transitions. [2021-06-05 22:31:18,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:31:18,385 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:31:18,385 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:31:18,385 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2021-06-05 22:31:18,385 INFO L430 AbstractCegarLoop]: === Iteration 242 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:31:18,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:31:18,385 INFO L82 PathProgramCache]: Analyzing trace with hash -782846872, now seen corresponding path program 242 times [2021-06-05 22:31:18,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:31:18,385 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197051549] [2021-06-05 22:31:18,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:31:18,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:31:18,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:31:18,568 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:31:18,568 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197051549] [2021-06-05 22:31:18,568 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197051549] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:31:18,568 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:31:18,568 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:31:18,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331879524] [2021-06-05 22:31:18,568 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:31:18,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:31:18,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:31:18,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:31:18,569 INFO L87 Difference]: Start difference. First operand 13174 states and 47482 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:31:25,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:31:25,075 INFO L93 Difference]: Finished difference Result 27086 states and 96712 transitions. [2021-06-05 22:31:25,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2021-06-05 22:31:25,075 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:31:25,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:31:25,131 INFO L225 Difference]: With dead ends: 27086 [2021-06-05 22:31:25,131 INFO L226 Difference]: Without dead ends: 26626 [2021-06-05 22:31:25,133 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11867 ImplicationChecksByTransitivity, 4245.4ms TimeCoverageRelationStatistics Valid=2028, Invalid=28074, Unknown=0, NotChecked=0, Total=30102 [2021-06-05 22:31:25,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26626 states. [2021-06-05 22:31:25,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26626 to 13520. [2021-06-05 22:31:25,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13520 states, 13519 states have (on average 3.6072194688956283) internal successors, (48766), 13519 states have internal predecessors, (48766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:31:25,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13520 states to 13520 states and 48766 transitions. [2021-06-05 22:31:25,494 INFO L78 Accepts]: Start accepts. Automaton has 13520 states and 48766 transitions. Word has length 47 [2021-06-05 22:31:25,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:31:25,494 INFO L482 AbstractCegarLoop]: Abstraction has 13520 states and 48766 transitions. [2021-06-05 22:31:25,494 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:31:25,494 INFO L276 IsEmpty]: Start isEmpty. Operand 13520 states and 48766 transitions. [2021-06-05 22:31:25,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:31:25,515 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:31:25,515 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:31:25,516 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2021-06-05 22:31:25,516 INFO L430 AbstractCegarLoop]: === Iteration 243 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:31:25,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:31:25,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1786699914, now seen corresponding path program 243 times [2021-06-05 22:31:25,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:31:25,516 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535236069] [2021-06-05 22:31:25,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:31:25,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:31:25,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:31:25,717 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:31:25,717 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535236069] [2021-06-05 22:31:25,717 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535236069] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:31:25,717 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:31:25,717 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:31:25,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506872584] [2021-06-05 22:31:25,717 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:31:25,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:31:25,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:31:25,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:31:25,717 INFO L87 Difference]: Start difference. First operand 13520 states and 48766 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:31:32,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:31:32,689 INFO L93 Difference]: Finished difference Result 28937 states and 103320 transitions. [2021-06-05 22:31:32,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2021-06-05 22:31:32,689 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:31:32,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:31:32,747 INFO L225 Difference]: With dead ends: 28937 [2021-06-05 22:31:32,747 INFO L226 Difference]: Without dead ends: 28321 [2021-06-05 22:31:32,749 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13401 ImplicationChecksByTransitivity, 4313.9ms TimeCoverageRelationStatistics Valid=2101, Invalid=31571, Unknown=0, NotChecked=0, Total=33672 [2021-06-05 22:31:32,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28321 states. [2021-06-05 22:31:33,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28321 to 13824. [2021-06-05 22:31:33,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13824 states, 13823 states have (on average 3.6139767054908485) internal successors, (49956), 13823 states have internal predecessors, (49956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:31:33,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13824 states to 13824 states and 49956 transitions. [2021-06-05 22:31:33,188 INFO L78 Accepts]: Start accepts. Automaton has 13824 states and 49956 transitions. Word has length 47 [2021-06-05 22:31:33,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:31:33,188 INFO L482 AbstractCegarLoop]: Abstraction has 13824 states and 49956 transitions. [2021-06-05 22:31:33,188 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:31:33,188 INFO L276 IsEmpty]: Start isEmpty. Operand 13824 states and 49956 transitions. [2021-06-05 22:31:33,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:31:33,211 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:31:33,211 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:31:33,211 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2021-06-05 22:31:33,211 INFO L430 AbstractCegarLoop]: === Iteration 244 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:31:33,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:31:33,211 INFO L82 PathProgramCache]: Analyzing trace with hash -2135966508, now seen corresponding path program 244 times [2021-06-05 22:31:33,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:31:33,212 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058984942] [2021-06-05 22:31:33,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:31:33,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:31:33,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:31:33,387 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:31:33,387 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058984942] [2021-06-05 22:31:33,387 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058984942] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:31:33,387 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:31:33,387 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:31:33,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226212489] [2021-06-05 22:31:33,387 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:31:33,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:31:33,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:31:33,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:31:33,388 INFO L87 Difference]: Start difference. First operand 13824 states and 49956 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:31:34,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:31:34,759 INFO L93 Difference]: Finished difference Result 16177 states and 58179 transitions. [2021-06-05 22:31:34,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 22:31:34,759 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:31:34,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:31:34,791 INFO L225 Difference]: With dead ends: 16177 [2021-06-05 22:31:34,792 INFO L226 Difference]: Without dead ends: 15887 [2021-06-05 22:31:34,792 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 731.9ms TimeCoverageRelationStatistics Valid=229, Invalid=2027, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 22:31:34,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15887 states. [2021-06-05 22:31:34,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15887 to 13906. [2021-06-05 22:31:35,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13906 states, 13905 states have (on average 3.6110751528227256) internal successors, (50212), 13905 states have internal predecessors, (50212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:31:35,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13906 states to 13906 states and 50212 transitions. [2021-06-05 22:31:35,045 INFO L78 Accepts]: Start accepts. Automaton has 13906 states and 50212 transitions. Word has length 47 [2021-06-05 22:31:35,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:31:35,045 INFO L482 AbstractCegarLoop]: Abstraction has 13906 states and 50212 transitions. [2021-06-05 22:31:35,045 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:31:35,045 INFO L276 IsEmpty]: Start isEmpty. Operand 13906 states and 50212 transitions. [2021-06-05 22:31:35,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:31:35,067 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:31:35,067 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:31:35,067 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2021-06-05 22:31:35,067 INFO L430 AbstractCegarLoop]: === Iteration 245 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:31:35,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:31:35,067 INFO L82 PathProgramCache]: Analyzing trace with hash 808252184, now seen corresponding path program 245 times [2021-06-05 22:31:35,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:31:35,067 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729044509] [2021-06-05 22:31:35,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:31:35,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:31:35,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:31:35,229 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:31:35,229 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729044509] [2021-06-05 22:31:35,229 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729044509] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:31:35,229 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:31:35,229 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:31:35,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819483610] [2021-06-05 22:31:35,230 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:31:35,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:31:35,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:31:35,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:31:35,230 INFO L87 Difference]: Start difference. First operand 13906 states and 50212 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:31:37,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:31:37,933 INFO L93 Difference]: Finished difference Result 19142 states and 69242 transitions. [2021-06-05 22:31:37,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-06-05 22:31:37,933 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:31:37,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:31:37,972 INFO L225 Difference]: With dead ends: 19142 [2021-06-05 22:31:37,972 INFO L226 Difference]: Without dead ends: 18890 [2021-06-05 22:31:37,973 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1547 ImplicationChecksByTransitivity, 1529.9ms TimeCoverageRelationStatistics Valid=520, Invalid=4736, Unknown=0, NotChecked=0, Total=5256 [2021-06-05 22:31:38,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18890 states. [2021-06-05 22:31:38,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18890 to 14354. [2021-06-05 22:31:38,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14354 states, 14353 states have (on average 3.612624538424023) internal successors, (51852), 14353 states have internal predecessors, (51852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:31:38,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14354 states to 14354 states and 51852 transitions. [2021-06-05 22:31:38,269 INFO L78 Accepts]: Start accepts. Automaton has 14354 states and 51852 transitions. Word has length 47 [2021-06-05 22:31:38,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:31:38,269 INFO L482 AbstractCegarLoop]: Abstraction has 14354 states and 51852 transitions. [2021-06-05 22:31:38,269 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:31:38,270 INFO L276 IsEmpty]: Start isEmpty. Operand 14354 states and 51852 transitions. [2021-06-05 22:31:38,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:31:38,293 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:31:38,293 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:31:38,293 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2021-06-05 22:31:38,293 INFO L430 AbstractCegarLoop]: === Iteration 246 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:31:38,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:31:38,293 INFO L82 PathProgramCache]: Analyzing trace with hash -42399724, now seen corresponding path program 246 times [2021-06-05 22:31:38,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:31:38,294 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141570193] [2021-06-05 22:31:38,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:31:38,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:31:38,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:31:38,461 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:31:38,461 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141570193] [2021-06-05 22:31:38,461 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141570193] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:31:38,461 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:31:38,461 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:31:38,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133135188] [2021-06-05 22:31:38,461 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:31:38,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:31:38,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:31:38,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:31:38,461 INFO L87 Difference]: Start difference. First operand 14354 states and 51852 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:31:41,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:31:41,518 INFO L93 Difference]: Finished difference Result 19964 states and 72371 transitions. [2021-06-05 22:31:41,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-06-05 22:31:41,519 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:31:41,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:31:41,556 INFO L225 Difference]: With dead ends: 19964 [2021-06-05 22:31:41,556 INFO L226 Difference]: Without dead ends: 19698 [2021-06-05 22:31:41,557 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2143 ImplicationChecksByTransitivity, 1637.9ms TimeCoverageRelationStatistics Valid=590, Invalid=6216, Unknown=0, NotChecked=0, Total=6806 [2021-06-05 22:31:41,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19698 states. [2021-06-05 22:31:41,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19698 to 14432. [2021-06-05 22:31:41,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14432 states, 14431 states have (on average 3.6118079135195065) internal successors, (52122), 14431 states have internal predecessors, (52122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:31:41,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14432 states to 14432 states and 52122 transitions. [2021-06-05 22:31:41,832 INFO L78 Accepts]: Start accepts. Automaton has 14432 states and 52122 transitions. Word has length 47 [2021-06-05 22:31:41,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:31:41,832 INFO L482 AbstractCegarLoop]: Abstraction has 14432 states and 52122 transitions. [2021-06-05 22:31:41,832 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:31:41,832 INFO L276 IsEmpty]: Start isEmpty. Operand 14432 states and 52122 transitions. [2021-06-05 22:31:41,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:31:41,854 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:31:41,854 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:31:41,854 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2021-06-05 22:31:41,854 INFO L430 AbstractCegarLoop]: === Iteration 247 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:31:41,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:31:41,854 INFO L82 PathProgramCache]: Analyzing trace with hash 2133407828, now seen corresponding path program 247 times [2021-06-05 22:31:41,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:31:41,854 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360077748] [2021-06-05 22:31:41,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:31:41,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:31:42,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:31:42,077 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:31:42,077 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360077748] [2021-06-05 22:31:42,077 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360077748] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:31:42,077 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:31:42,077 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 22:31:42,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855831461] [2021-06-05 22:31:42,078 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 22:31:42,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:31:42,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 22:31:42,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2021-06-05 22:31:42,078 INFO L87 Difference]: Start difference. First operand 14432 states and 52122 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:31:44,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:31:44,057 INFO L93 Difference]: Finished difference Result 17259 states and 61929 transitions. [2021-06-05 22:31:44,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-05 22:31:44,057 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:31:44,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:31:44,089 INFO L225 Difference]: With dead ends: 17259 [2021-06-05 22:31:44,089 INFO L226 Difference]: Without dead ends: 16959 [2021-06-05 22:31:44,090 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 4 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 973 ImplicationChecksByTransitivity, 1127.4ms TimeCoverageRelationStatistics Valid=392, Invalid=3148, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 22:31:44,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16959 states. [2021-06-05 22:31:44,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16959 to 14604. [2021-06-05 22:31:44,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14604 states, 14603 states have (on average 3.607683352735739) internal successors, (52683), 14603 states have internal predecessors, (52683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:31:44,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14604 states to 14604 states and 52683 transitions. [2021-06-05 22:31:44,349 INFO L78 Accepts]: Start accepts. Automaton has 14604 states and 52683 transitions. Word has length 47 [2021-06-05 22:31:44,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:31:44,349 INFO L482 AbstractCegarLoop]: Abstraction has 14604 states and 52683 transitions. [2021-06-05 22:31:44,349 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:31:44,349 INFO L276 IsEmpty]: Start isEmpty. Operand 14604 states and 52683 transitions. [2021-06-05 22:31:44,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:31:44,371 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:31:44,371 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:31:44,372 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2021-06-05 22:31:44,372 INFO L430 AbstractCegarLoop]: === Iteration 248 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:31:44,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:31:44,372 INFO L82 PathProgramCache]: Analyzing trace with hash 154533366, now seen corresponding path program 248 times [2021-06-05 22:31:44,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:31:44,372 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876287894] [2021-06-05 22:31:44,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:31:44,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:31:44,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:31:44,535 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:31:44,535 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876287894] [2021-06-05 22:31:44,535 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876287894] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:31:44,535 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:31:44,535 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:31:44,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671216775] [2021-06-05 22:31:44,536 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:31:44,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:31:44,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:31:44,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:31:44,536 INFO L87 Difference]: Start difference. First operand 14604 states and 52683 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:31:47,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:31:47,359 INFO L93 Difference]: Finished difference Result 20227 states and 73158 transitions. [2021-06-05 22:31:47,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-06-05 22:31:47,359 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:31:47,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:31:47,398 INFO L225 Difference]: With dead ends: 20227 [2021-06-05 22:31:47,398 INFO L226 Difference]: Without dead ends: 19927 [2021-06-05 22:31:47,399 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1829 ImplicationChecksByTransitivity, 1658.7ms TimeCoverageRelationStatistics Valid=590, Invalid=5416, Unknown=0, NotChecked=0, Total=6006 [2021-06-05 22:31:47,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19927 states. [2021-06-05 22:31:47,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19927 to 14998. [2021-06-05 22:31:47,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14998 states, 14997 states have (on average 3.6193905447756216) internal successors, (54280), 14997 states have internal predecessors, (54280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:31:47,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14998 states to 14998 states and 54280 transitions. [2021-06-05 22:31:47,702 INFO L78 Accepts]: Start accepts. Automaton has 14998 states and 54280 transitions. Word has length 47 [2021-06-05 22:31:47,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:31:47,703 INFO L482 AbstractCegarLoop]: Abstraction has 14998 states and 54280 transitions. [2021-06-05 22:31:47,703 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:31:47,703 INFO L276 IsEmpty]: Start isEmpty. Operand 14998 states and 54280 transitions. [2021-06-05 22:31:47,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:31:47,727 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:31:47,728 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:31:47,728 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2021-06-05 22:31:47,728 INFO L430 AbstractCegarLoop]: === Iteration 249 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:31:47,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:31:47,728 INFO L82 PathProgramCache]: Analyzing trace with hash -696118542, now seen corresponding path program 249 times [2021-06-05 22:31:47,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:31:47,728 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667873660] [2021-06-05 22:31:47,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:31:47,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:31:47,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:31:47,966 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:31:47,966 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667873660] [2021-06-05 22:31:47,966 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667873660] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:31:47,966 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:31:47,966 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:31:47,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082560419] [2021-06-05 22:31:47,966 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:31:47,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:31:47,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:31:47,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:31:47,967 INFO L87 Difference]: Start difference. First operand 14998 states and 54280 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:31:50,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:31:50,971 INFO L93 Difference]: Finished difference Result 20876 states and 75872 transitions. [2021-06-05 22:31:50,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-06-05 22:31:50,971 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:31:50,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:31:51,010 INFO L225 Difference]: With dead ends: 20876 [2021-06-05 22:31:51,010 INFO L226 Difference]: Without dead ends: 20582 [2021-06-05 22:31:51,011 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2029 ImplicationChecksByTransitivity, 1705.3ms TimeCoverageRelationStatistics Valid=588, Invalid=5892, Unknown=0, NotChecked=0, Total=6480 [2021-06-05 22:31:51,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20582 states. [2021-06-05 22:31:51,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20582 to 14924. [2021-06-05 22:31:51,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14924 states, 14923 states have (on average 3.620853715740803) internal successors, (54034), 14923 states have internal predecessors, (54034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:31:51,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14924 states to 14924 states and 54034 transitions. [2021-06-05 22:31:51,348 INFO L78 Accepts]: Start accepts. Automaton has 14924 states and 54034 transitions. Word has length 47 [2021-06-05 22:31:51,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:31:51,348 INFO L482 AbstractCegarLoop]: Abstraction has 14924 states and 54034 transitions. [2021-06-05 22:31:51,348 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:31:51,349 INFO L276 IsEmpty]: Start isEmpty. Operand 14924 states and 54034 transitions. [2021-06-05 22:31:51,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:31:51,372 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:31:51,372 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:31:51,372 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2021-06-05 22:31:51,372 INFO L430 AbstractCegarLoop]: === Iteration 250 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:31:51,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:31:51,372 INFO L82 PathProgramCache]: Analyzing trace with hash -273273098, now seen corresponding path program 250 times [2021-06-05 22:31:51,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:31:51,372 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359206465] [2021-06-05 22:31:51,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:31:51,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:31:51,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:31:51,561 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:31:51,561 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359206465] [2021-06-05 22:31:51,561 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359206465] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:31:51,561 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:31:51,561 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:31:51,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332634040] [2021-06-05 22:31:51,561 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:31:51,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:31:51,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:31:51,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:31:51,562 INFO L87 Difference]: Start difference. First operand 14924 states and 54034 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:31:53,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:31:53,105 INFO L93 Difference]: Finished difference Result 17205 states and 61974 transitions. [2021-06-05 22:31:53,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 22:31:53,105 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:31:53,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:31:53,139 INFO L225 Difference]: With dead ends: 17205 [2021-06-05 22:31:53,139 INFO L226 Difference]: Without dead ends: 17078 [2021-06-05 22:31:53,139 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 612 ImplicationChecksByTransitivity, 822.3ms TimeCoverageRelationStatistics Valid=262, Invalid=2494, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 22:31:53,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17078 states. [2021-06-05 22:31:53,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17078 to 14936. [2021-06-05 22:31:53,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14936 states, 14935 states have (on average 3.619953130231001) internal successors, (54064), 14935 states have internal predecessors, (54064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:31:53,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14936 states to 14936 states and 54064 transitions. [2021-06-05 22:31:53,426 INFO L78 Accepts]: Start accepts. Automaton has 14936 states and 54064 transitions. Word has length 47 [2021-06-05 22:31:53,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:31:53,426 INFO L482 AbstractCegarLoop]: Abstraction has 14936 states and 54064 transitions. [2021-06-05 22:31:53,426 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:31:53,426 INFO L276 IsEmpty]: Start isEmpty. Operand 14936 states and 54064 transitions. [2021-06-05 22:31:53,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:31:53,449 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:31:53,449 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:31:53,450 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2021-06-05 22:31:53,450 INFO L430 AbstractCegarLoop]: === Iteration 251 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:31:53,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:31:53,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1624021702, now seen corresponding path program 251 times [2021-06-05 22:31:53,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:31:53,450 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582959977] [2021-06-05 22:31:53,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:31:53,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:31:53,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:31:53,626 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:31:53,626 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582959977] [2021-06-05 22:31:53,626 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582959977] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:31:53,626 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:31:53,626 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:31:53,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753088739] [2021-06-05 22:31:53,626 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:31:53,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:31:53,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:31:53,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:31:53,627 INFO L87 Difference]: Start difference. First operand 14936 states and 54064 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:31:56,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:31:56,639 INFO L93 Difference]: Finished difference Result 19887 states and 71998 transitions. [2021-06-05 22:31:56,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-06-05 22:31:56,639 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:31:56,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:31:56,677 INFO L225 Difference]: With dead ends: 19887 [2021-06-05 22:31:56,677 INFO L226 Difference]: Without dead ends: 19798 [2021-06-05 22:31:56,677 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1831 ImplicationChecksByTransitivity, 1646.0ms TimeCoverageRelationStatistics Valid=574, Invalid=5588, Unknown=0, NotChecked=0, Total=6162 [2021-06-05 22:31:56,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19798 states. [2021-06-05 22:31:56,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19798 to 14948. [2021-06-05 22:31:56,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14948 states, 14947 states have (on average 3.619856827457015) internal successors, (54106), 14947 states have internal predecessors, (54106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:31:56,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14948 states to 14948 states and 54106 transitions. [2021-06-05 22:31:56,967 INFO L78 Accepts]: Start accepts. Automaton has 14948 states and 54106 transitions. Word has length 47 [2021-06-05 22:31:56,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:31:56,967 INFO L482 AbstractCegarLoop]: Abstraction has 14948 states and 54106 transitions. [2021-06-05 22:31:56,967 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:31:56,967 INFO L276 IsEmpty]: Start isEmpty. Operand 14948 states and 54106 transitions. [2021-06-05 22:31:56,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:31:56,990 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:31:56,990 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:31:56,990 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2021-06-05 22:31:56,990 INFO L430 AbstractCegarLoop]: === Iteration 252 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:31:56,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:31:56,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1820293686, now seen corresponding path program 252 times [2021-06-05 22:31:56,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:31:56,990 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482193462] [2021-06-05 22:31:56,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:31:56,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:31:57,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:31:57,166 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:31:57,166 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482193462] [2021-06-05 22:31:57,166 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482193462] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:31:57,166 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:31:57,166 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:31:57,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548288487] [2021-06-05 22:31:57,167 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:31:57,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:31:57,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:31:57,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:31:57,167 INFO L87 Difference]: Start difference. First operand 14948 states and 54106 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:00,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:32:00,539 INFO L93 Difference]: Finished difference Result 20391 states and 74027 transitions. [2021-06-05 22:32:00,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-06-05 22:32:00,539 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:32:00,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:32:00,578 INFO L225 Difference]: With dead ends: 20391 [2021-06-05 22:32:00,578 INFO L226 Difference]: Without dead ends: 20288 [2021-06-05 22:32:00,579 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2762 ImplicationChecksByTransitivity, 1929.4ms TimeCoverageRelationStatistics Valid=700, Invalid=7856, Unknown=0, NotChecked=0, Total=8556 [2021-06-05 22:32:00,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20288 states. [2021-06-05 22:32:00,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20288 to 14936. [2021-06-05 22:32:00,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14936 states, 14935 states have (on average 3.6207566119852697) internal successors, (54076), 14935 states have internal predecessors, (54076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:00,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14936 states to 14936 states and 54076 transitions. [2021-06-05 22:32:00,885 INFO L78 Accepts]: Start accepts. Automaton has 14936 states and 54076 transitions. Word has length 47 [2021-06-05 22:32:00,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:32:00,885 INFO L482 AbstractCegarLoop]: Abstraction has 14936 states and 54076 transitions. [2021-06-05 22:32:00,885 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:00,885 INFO L276 IsEmpty]: Start isEmpty. Operand 14936 states and 54076 transitions. [2021-06-05 22:32:00,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:32:00,909 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:32:00,909 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:32:00,909 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2021-06-05 22:32:00,909 INFO L430 AbstractCegarLoop]: === Iteration 253 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:32:00,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:32:00,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1268650260, now seen corresponding path program 253 times [2021-06-05 22:32:00,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:32:00,909 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942355619] [2021-06-05 22:32:00,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:32:00,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:32:01,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:32:01,088 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:32:01,088 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942355619] [2021-06-05 22:32:01,088 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942355619] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:32:01,088 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:32:01,088 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:32:01,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9120537] [2021-06-05 22:32:01,088 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:32:01,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:32:01,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:32:01,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:32:01,089 INFO L87 Difference]: Start difference. First operand 14936 states and 54076 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:02,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:32:02,328 INFO L93 Difference]: Finished difference Result 16876 states and 60828 transitions. [2021-06-05 22:32:02,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 22:32:02,328 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:32:02,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:32:02,359 INFO L225 Difference]: With dead ends: 16876 [2021-06-05 22:32:02,360 INFO L226 Difference]: Without dead ends: 16749 [2021-06-05 22:32:02,360 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 623.7ms TimeCoverageRelationStatistics Valid=194, Invalid=1786, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 22:32:02,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16749 states. [2021-06-05 22:32:02,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16749 to 14952. [2021-06-05 22:32:02,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14952 states, 14951 states have (on average 3.619557220252826) internal successors, (54116), 14951 states have internal predecessors, (54116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:02,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14952 states to 14952 states and 54116 transitions. [2021-06-05 22:32:02,639 INFO L78 Accepts]: Start accepts. Automaton has 14952 states and 54116 transitions. Word has length 47 [2021-06-05 22:32:02,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:32:02,639 INFO L482 AbstractCegarLoop]: Abstraction has 14952 states and 54116 transitions. [2021-06-05 22:32:02,639 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:02,639 INFO L276 IsEmpty]: Start isEmpty. Operand 14952 states and 54116 transitions. [2021-06-05 22:32:02,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:32:02,663 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:32:02,663 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:32:02,663 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2021-06-05 22:32:02,663 INFO L430 AbstractCegarLoop]: === Iteration 254 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:32:02,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:32:02,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1198945776, now seen corresponding path program 254 times [2021-06-05 22:32:02,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:32:02,664 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575220175] [2021-06-05 22:32:02,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:32:02,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:32:02,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:32:02,836 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:32:02,836 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575220175] [2021-06-05 22:32:02,836 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575220175] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:32:02,836 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:32:02,836 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:32:02,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170475490] [2021-06-05 22:32:02,836 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:32:02,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:32:02,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:32:02,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:32:02,836 INFO L87 Difference]: Start difference. First operand 14952 states and 54116 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:04,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:32:04,013 INFO L93 Difference]: Finished difference Result 16945 states and 61030 transitions. [2021-06-05 22:32:04,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 22:32:04,014 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:32:04,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:32:04,045 INFO L225 Difference]: With dead ends: 16945 [2021-06-05 22:32:04,045 INFO L226 Difference]: Without dead ends: 16848 [2021-06-05 22:32:04,045 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 607.0ms TimeCoverageRelationStatistics Valid=189, Invalid=1703, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 22:32:04,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16848 states. [2021-06-05 22:32:04,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16848 to 14952. [2021-06-05 22:32:04,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14952 states, 14951 states have (on average 3.619557220252826) internal successors, (54116), 14951 states have internal predecessors, (54116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:04,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14952 states to 14952 states and 54116 transitions. [2021-06-05 22:32:04,308 INFO L78 Accepts]: Start accepts. Automaton has 14952 states and 54116 transitions. Word has length 47 [2021-06-05 22:32:04,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:32:04,308 INFO L482 AbstractCegarLoop]: Abstraction has 14952 states and 54116 transitions. [2021-06-05 22:32:04,309 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:04,309 INFO L276 IsEmpty]: Start isEmpty. Operand 14952 states and 54116 transitions. [2021-06-05 22:32:04,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:32:04,331 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:32:04,331 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:32:04,331 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2021-06-05 22:32:04,331 INFO L430 AbstractCegarLoop]: === Iteration 255 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:32:04,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:32:04,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1196271950, now seen corresponding path program 255 times [2021-06-05 22:32:04,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:32:04,332 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149283207] [2021-06-05 22:32:04,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:32:04,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:32:04,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:32:04,509 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:32:04,509 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149283207] [2021-06-05 22:32:04,509 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149283207] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:32:04,509 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:32:04,509 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:32:04,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075820010] [2021-06-05 22:32:04,509 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:32:04,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:32:04,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:32:04,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:32:04,509 INFO L87 Difference]: Start difference. First operand 14952 states and 54116 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:05,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:32:05,763 INFO L93 Difference]: Finished difference Result 16846 states and 60725 transitions. [2021-06-05 22:32:05,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 22:32:05,763 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:32:05,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:32:05,795 INFO L225 Difference]: With dead ends: 16846 [2021-06-05 22:32:05,795 INFO L226 Difference]: Without dead ends: 16737 [2021-06-05 22:32:05,795 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 625.0ms TimeCoverageRelationStatistics Valid=195, Invalid=1785, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 22:32:05,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16737 states. [2021-06-05 22:32:06,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16737 to 14940. [2021-06-05 22:32:06,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14940 states, 14939 states have (on average 3.6201887676551308) internal successors, (54082), 14939 states have internal predecessors, (54082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:06,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14940 states to 14940 states and 54082 transitions. [2021-06-05 22:32:06,057 INFO L78 Accepts]: Start accepts. Automaton has 14940 states and 54082 transitions. Word has length 47 [2021-06-05 22:32:06,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:32:06,057 INFO L482 AbstractCegarLoop]: Abstraction has 14940 states and 54082 transitions. [2021-06-05 22:32:06,057 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:06,057 INFO L276 IsEmpty]: Start isEmpty. Operand 14940 states and 54082 transitions. [2021-06-05 22:32:06,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:32:06,081 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:32:06,081 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:32:06,081 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2021-06-05 22:32:06,081 INFO L430 AbstractCegarLoop]: === Iteration 256 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:32:06,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:32:06,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1790223674, now seen corresponding path program 256 times [2021-06-05 22:32:06,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:32:06,081 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872642510] [2021-06-05 22:32:06,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:32:06,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:32:06,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:32:06,262 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:32:06,262 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872642510] [2021-06-05 22:32:06,262 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872642510] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:32:06,262 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:32:06,262 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:32:06,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871920486] [2021-06-05 22:32:06,262 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:32:06,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:32:06,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:32:06,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:32:06,263 INFO L87 Difference]: Start difference. First operand 14940 states and 54082 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:07,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:32:07,761 INFO L93 Difference]: Finished difference Result 17112 states and 61565 transitions. [2021-06-05 22:32:07,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 22:32:07,762 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:32:07,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:32:07,797 INFO L225 Difference]: With dead ends: 17112 [2021-06-05 22:32:07,797 INFO L226 Difference]: Without dead ends: 16991 [2021-06-05 22:32:07,797 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 658 ImplicationChecksByTransitivity, 856.6ms TimeCoverageRelationStatistics Valid=274, Invalid=2588, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 22:32:07,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16991 states. [2021-06-05 22:32:08,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16991 to 14940. [2021-06-05 22:32:08,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14940 states, 14939 states have (on average 3.6201887676551308) internal successors, (54082), 14939 states have internal predecessors, (54082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:08,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14940 states to 14940 states and 54082 transitions. [2021-06-05 22:32:08,091 INFO L78 Accepts]: Start accepts. Automaton has 14940 states and 54082 transitions. Word has length 47 [2021-06-05 22:32:08,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:32:08,091 INFO L482 AbstractCegarLoop]: Abstraction has 14940 states and 54082 transitions. [2021-06-05 22:32:08,092 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:08,092 INFO L276 IsEmpty]: Start isEmpty. Operand 14940 states and 54082 transitions. [2021-06-05 22:32:08,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:32:08,115 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:32:08,115 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:32:08,115 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2021-06-05 22:32:08,115 INFO L430 AbstractCegarLoop]: === Iteration 257 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:32:08,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:32:08,116 INFO L82 PathProgramCache]: Analyzing trace with hash -933322186, now seen corresponding path program 257 times [2021-06-05 22:32:08,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:32:08,116 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874190355] [2021-06-05 22:32:08,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:32:08,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:32:08,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:32:08,392 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:32:08,392 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874190355] [2021-06-05 22:32:08,392 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874190355] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:32:08,392 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:32:08,392 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:32:08,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154480263] [2021-06-05 22:32:08,392 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:32:08,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:32:08,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:32:08,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:32:08,392 INFO L87 Difference]: Start difference. First operand 14940 states and 54082 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:10,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:32:10,504 INFO L93 Difference]: Finished difference Result 17853 states and 64157 transitions. [2021-06-05 22:32:10,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-05 22:32:10,505 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:32:10,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:32:10,538 INFO L225 Difference]: With dead ends: 17853 [2021-06-05 22:32:10,539 INFO L226 Difference]: Without dead ends: 17758 [2021-06-05 22:32:10,539 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1098 ImplicationChecksByTransitivity, 1227.3ms TimeCoverageRelationStatistics Valid=374, Invalid=3786, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 22:32:10,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17758 states. [2021-06-05 22:32:10,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17758 to 14940. [2021-06-05 22:32:10,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14940 states, 14939 states have (on average 3.6201887676551308) internal successors, (54082), 14939 states have internal predecessors, (54082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:10,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14940 states to 14940 states and 54082 transitions. [2021-06-05 22:32:10,824 INFO L78 Accepts]: Start accepts. Automaton has 14940 states and 54082 transitions. Word has length 47 [2021-06-05 22:32:10,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:32:10,824 INFO L482 AbstractCegarLoop]: Abstraction has 14940 states and 54082 transitions. [2021-06-05 22:32:10,824 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:10,824 INFO L276 IsEmpty]: Start isEmpty. Operand 14940 states and 54082 transitions. [2021-06-05 22:32:10,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:32:10,848 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:32:10,848 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:32:10,848 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2021-06-05 22:32:10,848 INFO L430 AbstractCegarLoop]: === Iteration 258 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:32:10,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:32:10,848 INFO L82 PathProgramCache]: Analyzing trace with hash -634430508, now seen corresponding path program 258 times [2021-06-05 22:32:10,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:32:10,848 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367503937] [2021-06-05 22:32:10,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:32:10,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:32:11,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:32:11,018 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:32:11,018 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367503937] [2021-06-05 22:32:11,018 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367503937] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:32:11,018 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:32:11,018 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:32:11,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957497815] [2021-06-05 22:32:11,018 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:32:11,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:32:11,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:32:11,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:32:11,018 INFO L87 Difference]: Start difference. First operand 14940 states and 54082 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:12,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:32:12,242 INFO L93 Difference]: Finished difference Result 16935 states and 60999 transitions. [2021-06-05 22:32:12,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 22:32:12,242 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:32:12,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:32:12,274 INFO L225 Difference]: With dead ends: 16935 [2021-06-05 22:32:12,275 INFO L226 Difference]: Without dead ends: 16838 [2021-06-05 22:32:12,275 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 615.5ms TimeCoverageRelationStatistics Valid=196, Invalid=1696, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 22:32:12,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16838 states. [2021-06-05 22:32:12,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16838 to 14940. [2021-06-05 22:32:12,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14940 states, 14939 states have (on average 3.6201887676551308) internal successors, (54082), 14939 states have internal predecessors, (54082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:12,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14940 states to 14940 states and 54082 transitions. [2021-06-05 22:32:12,541 INFO L78 Accepts]: Start accepts. Automaton has 14940 states and 54082 transitions. Word has length 47 [2021-06-05 22:32:12,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:32:12,541 INFO L482 AbstractCegarLoop]: Abstraction has 14940 states and 54082 transitions. [2021-06-05 22:32:12,541 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:12,541 INFO L276 IsEmpty]: Start isEmpty. Operand 14940 states and 54082 transitions. [2021-06-05 22:32:12,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:32:12,565 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:32:12,565 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:32:12,565 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2021-06-05 22:32:12,565 INFO L430 AbstractCegarLoop]: === Iteration 259 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:32:12,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:32:12,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1935116278, now seen corresponding path program 259 times [2021-06-05 22:32:12,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:32:12,566 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212496575] [2021-06-05 22:32:12,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:32:12,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:32:12,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:32:12,751 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:32:12,752 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212496575] [2021-06-05 22:32:12,752 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212496575] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:32:12,752 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:32:12,752 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:32:12,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846981883] [2021-06-05 22:32:12,752 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:32:12,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:32:12,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:32:12,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:32:12,752 INFO L87 Difference]: Start difference. First operand 14940 states and 54082 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:13,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:32:13,947 INFO L93 Difference]: Finished difference Result 16836 states and 60694 transitions. [2021-06-05 22:32:13,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 22:32:13,947 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:32:13,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:32:13,980 INFO L225 Difference]: With dead ends: 16836 [2021-06-05 22:32:13,980 INFO L226 Difference]: Without dead ends: 16733 [2021-06-05 22:32:13,981 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 644.6ms TimeCoverageRelationStatistics Valid=200, Invalid=1780, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 22:32:14,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16733 states. [2021-06-05 22:32:14,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16733 to 14936. [2021-06-05 22:32:14,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14936 states, 14935 states have (on average 3.6204887847338467) internal successors, (54072), 14935 states have internal predecessors, (54072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:14,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14936 states to 14936 states and 54072 transitions. [2021-06-05 22:32:14,256 INFO L78 Accepts]: Start accepts. Automaton has 14936 states and 54072 transitions. Word has length 47 [2021-06-05 22:32:14,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:32:14,256 INFO L482 AbstractCegarLoop]: Abstraction has 14936 states and 54072 transitions. [2021-06-05 22:32:14,256 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:14,256 INFO L276 IsEmpty]: Start isEmpty. Operand 14936 states and 54072 transitions. [2021-06-05 22:32:14,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:32:14,279 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:32:14,279 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:32:14,280 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2021-06-05 22:32:14,280 INFO L430 AbstractCegarLoop]: === Iteration 260 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:32:14,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:32:14,280 INFO L82 PathProgramCache]: Analyzing trace with hash -289239916, now seen corresponding path program 260 times [2021-06-05 22:32:14,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:32:14,280 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731321400] [2021-06-05 22:32:14,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:32:14,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:32:14,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:32:14,444 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:32:14,444 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731321400] [2021-06-05 22:32:14,444 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731321400] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:32:14,444 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:32:14,444 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:32:14,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437310475] [2021-06-05 22:32:14,444 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:32:14,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:32:14,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:32:14,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:32:14,444 INFO L87 Difference]: Start difference. First operand 14936 states and 54072 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:15,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:32:15,809 INFO L93 Difference]: Finished difference Result 16839 states and 60748 transitions. [2021-06-05 22:32:15,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 22:32:15,809 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:32:15,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:32:15,841 INFO L225 Difference]: With dead ends: 16839 [2021-06-05 22:32:15,841 INFO L226 Difference]: Without dead ends: 16702 [2021-06-05 22:32:15,841 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 726.0ms TimeCoverageRelationStatistics Valid=230, Invalid=2026, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 22:32:15,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16702 states. [2021-06-05 22:32:16,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16702 to 14954. [2021-06-05 22:32:16,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14954 states, 14953 states have (on average 3.619139971911991) internal successors, (54117), 14953 states have internal predecessors, (54117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:16,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14954 states to 14954 states and 54117 transitions. [2021-06-05 22:32:16,102 INFO L78 Accepts]: Start accepts. Automaton has 14954 states and 54117 transitions. Word has length 47 [2021-06-05 22:32:16,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:32:16,102 INFO L482 AbstractCegarLoop]: Abstraction has 14954 states and 54117 transitions. [2021-06-05 22:32:16,102 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:16,102 INFO L276 IsEmpty]: Start isEmpty. Operand 14954 states and 54117 transitions. [2021-06-05 22:32:16,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:32:16,125 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:32:16,125 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:32:16,125 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2021-06-05 22:32:16,125 INFO L430 AbstractCegarLoop]: === Iteration 261 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:32:16,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:32:16,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1098180524, now seen corresponding path program 261 times [2021-06-05 22:32:16,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:32:16,126 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385190435] [2021-06-05 22:32:16,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:32:16,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:32:16,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:32:16,301 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:32:16,301 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385190435] [2021-06-05 22:32:16,301 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385190435] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:32:16,301 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:32:16,301 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:32:16,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278092070] [2021-06-05 22:32:16,301 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:32:16,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:32:16,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:32:16,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:32:16,301 INFO L87 Difference]: Start difference. First operand 14954 states and 54117 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:17,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:32:17,698 INFO L93 Difference]: Finished difference Result 16823 states and 60680 transitions. [2021-06-05 22:32:17,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 22:32:17,698 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:32:17,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:32:17,731 INFO L225 Difference]: With dead ends: 16823 [2021-06-05 22:32:17,731 INFO L226 Difference]: Without dead ends: 16678 [2021-06-05 22:32:17,731 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 781.7ms TimeCoverageRelationStatistics Valid=246, Invalid=2304, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 22:32:17,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16678 states. [2021-06-05 22:32:17,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16678 to 14954. [2021-06-05 22:32:17,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14954 states, 14953 states have (on average 3.618738714639203) internal successors, (54111), 14953 states have internal predecessors, (54111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:18,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14954 states to 14954 states and 54111 transitions. [2021-06-05 22:32:18,015 INFO L78 Accepts]: Start accepts. Automaton has 14954 states and 54111 transitions. Word has length 47 [2021-06-05 22:32:18,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:32:18,015 INFO L482 AbstractCegarLoop]: Abstraction has 14954 states and 54111 transitions. [2021-06-05 22:32:18,015 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:18,015 INFO L276 IsEmpty]: Start isEmpty. Operand 14954 states and 54111 transitions. [2021-06-05 22:32:18,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:32:18,041 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:32:18,041 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:32:18,041 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2021-06-05 22:32:18,041 INFO L430 AbstractCegarLoop]: === Iteration 262 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:32:18,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:32:18,041 INFO L82 PathProgramCache]: Analyzing trace with hash -198284746, now seen corresponding path program 262 times [2021-06-05 22:32:18,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:32:18,041 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861629637] [2021-06-05 22:32:18,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:32:18,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:32:18,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:32:18,218 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:32:18,218 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861629637] [2021-06-05 22:32:18,218 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861629637] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:32:18,218 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:32:18,218 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:32:18,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521120852] [2021-06-05 22:32:18,219 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:32:18,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:32:18,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:32:18,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:32:18,219 INFO L87 Difference]: Start difference. First operand 14954 states and 54111 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:21,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:32:21,805 INFO L93 Difference]: Finished difference Result 21637 states and 78515 transitions. [2021-06-05 22:32:21,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-06-05 22:32:21,806 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:32:21,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:32:21,847 INFO L225 Difference]: With dead ends: 21637 [2021-06-05 22:32:21,847 INFO L226 Difference]: Without dead ends: 21500 [2021-06-05 22:32:21,848 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2700 ImplicationChecksByTransitivity, 2042.0ms TimeCoverageRelationStatistics Valid=728, Invalid=7644, Unknown=0, NotChecked=0, Total=8372 [2021-06-05 22:32:21,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21500 states. [2021-06-05 22:32:22,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21500 to 14942. [2021-06-05 22:32:22,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14942 states, 14941 states have (on average 3.620038819356134) internal successors, (54087), 14941 states have internal predecessors, (54087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:22,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14942 states to 14942 states and 54087 transitions. [2021-06-05 22:32:22,150 INFO L78 Accepts]: Start accepts. Automaton has 14942 states and 54087 transitions. Word has length 47 [2021-06-05 22:32:22,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:32:22,150 INFO L482 AbstractCegarLoop]: Abstraction has 14942 states and 54087 transitions. [2021-06-05 22:32:22,150 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:22,150 INFO L276 IsEmpty]: Start isEmpty. Operand 14942 states and 54087 transitions. [2021-06-05 22:32:22,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:32:22,172 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:32:22,173 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:32:22,173 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2021-06-05 22:32:22,173 INFO L430 AbstractCegarLoop]: === Iteration 263 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:32:22,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:32:22,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1048936654, now seen corresponding path program 263 times [2021-06-05 22:32:22,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:32:22,173 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80366961] [2021-06-05 22:32:22,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:32:22,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:32:22,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:32:22,349 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:32:22,349 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80366961] [2021-06-05 22:32:22,349 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80366961] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:32:22,349 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:32:22,349 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:32:22,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044603169] [2021-06-05 22:32:22,349 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:32:22,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:32:22,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:32:22,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:32:22,350 INFO L87 Difference]: Start difference. First operand 14942 states and 54087 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:25,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:32:25,944 INFO L93 Difference]: Finished difference Result 22266 states and 81144 transitions. [2021-06-05 22:32:25,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-06-05 22:32:25,944 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:32:25,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:32:25,984 INFO L225 Difference]: With dead ends: 22266 [2021-06-05 22:32:25,984 INFO L226 Difference]: Without dead ends: 22159 [2021-06-05 22:32:25,985 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2789 ImplicationChecksByTransitivity, 1913.9ms TimeCoverageRelationStatistics Valid=702, Invalid=7854, Unknown=0, NotChecked=0, Total=8556 [2021-06-05 22:32:26,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22159 states. [2021-06-05 22:32:26,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22159 to 14930. [2021-06-05 22:32:26,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14930 states, 14929 states have (on average 3.6197334047826377) internal successors, (54039), 14929 states have internal predecessors, (54039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:26,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14930 states to 14930 states and 54039 transitions. [2021-06-05 22:32:26,374 INFO L78 Accepts]: Start accepts. Automaton has 14930 states and 54039 transitions. Word has length 47 [2021-06-05 22:32:26,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:32:26,374 INFO L482 AbstractCegarLoop]: Abstraction has 14930 states and 54039 transitions. [2021-06-05 22:32:26,374 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:26,374 INFO L276 IsEmpty]: Start isEmpty. Operand 14930 states and 54039 transitions. [2021-06-05 22:32:26,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:32:26,397 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:32:26,397 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:32:26,397 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2021-06-05 22:32:26,397 INFO L430 AbstractCegarLoop]: === Iteration 264 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:32:26,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:32:26,398 INFO L82 PathProgramCache]: Analyzing trace with hash 631664792, now seen corresponding path program 264 times [2021-06-05 22:32:26,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:32:26,398 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074166412] [2021-06-05 22:32:26,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:32:26,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:32:26,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:32:26,574 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:32:26,574 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074166412] [2021-06-05 22:32:26,574 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074166412] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:32:26,574 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:32:26,574 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:32:26,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050585570] [2021-06-05 22:32:26,574 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:32:26,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:32:26,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:32:26,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:32:26,574 INFO L87 Difference]: Start difference. First operand 14930 states and 54039 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:28,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:32:28,082 INFO L93 Difference]: Finished difference Result 16979 states and 61149 transitions. [2021-06-05 22:32:28,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 22:32:28,082 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:32:28,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:32:28,114 INFO L225 Difference]: With dead ends: 16979 [2021-06-05 22:32:28,114 INFO L226 Difference]: Without dead ends: 16858 [2021-06-05 22:32:28,115 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 696 ImplicationChecksByTransitivity, 878.0ms TimeCoverageRelationStatistics Valid=280, Invalid=2690, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 22:32:28,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16858 states. [2021-06-05 22:32:28,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16858 to 14930. [2021-06-05 22:32:28,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14930 states, 14929 states have (on average 3.6197334047826377) internal successors, (54039), 14929 states have internal predecessors, (54039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:28,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14930 states to 14930 states and 54039 transitions. [2021-06-05 22:32:28,379 INFO L78 Accepts]: Start accepts. Automaton has 14930 states and 54039 transitions. Word has length 47 [2021-06-05 22:32:28,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:32:28,379 INFO L482 AbstractCegarLoop]: Abstraction has 14930 states and 54039 transitions. [2021-06-05 22:32:28,380 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:28,380 INFO L276 IsEmpty]: Start isEmpty. Operand 14930 states and 54039 transitions. [2021-06-05 22:32:28,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:32:28,404 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:32:28,404 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:32:28,404 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263 [2021-06-05 22:32:28,404 INFO L430 AbstractCegarLoop]: === Iteration 265 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:32:28,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:32:28,404 INFO L82 PathProgramCache]: Analyzing trace with hash -2091881068, now seen corresponding path program 265 times [2021-06-05 22:32:28,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:32:28,404 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465283942] [2021-06-05 22:32:28,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:32:28,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:32:28,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:32:28,590 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:32:28,590 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465283942] [2021-06-05 22:32:28,590 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465283942] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:32:28,590 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:32:28,590 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:32:28,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123280410] [2021-06-05 22:32:28,590 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:32:28,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:32:28,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:32:28,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:32:28,591 INFO L87 Difference]: Start difference. First operand 14930 states and 54039 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:30,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:32:30,693 INFO L93 Difference]: Finished difference Result 17637 states and 63497 transitions. [2021-06-05 22:32:30,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-05 22:32:30,694 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:32:30,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:32:30,727 INFO L225 Difference]: With dead ends: 17637 [2021-06-05 22:32:30,727 INFO L226 Difference]: Without dead ends: 17393 [2021-06-05 22:32:30,728 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1100 ImplicationChecksByTransitivity, 1110.3ms TimeCoverageRelationStatistics Valid=366, Invalid=3794, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 22:32:30,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17393 states. [2021-06-05 22:32:30,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17393 to 14912. [2021-06-05 22:32:30,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14912 states, 14911 states have (on average 3.620682717456911) internal successors, (53988), 14911 states have internal predecessors, (53988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:30,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14912 states to 14912 states and 53988 transitions. [2021-06-05 22:32:30,997 INFO L78 Accepts]: Start accepts. Automaton has 14912 states and 53988 transitions. Word has length 47 [2021-06-05 22:32:30,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:32:30,997 INFO L482 AbstractCegarLoop]: Abstraction has 14912 states and 53988 transitions. [2021-06-05 22:32:30,997 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:30,997 INFO L276 IsEmpty]: Start isEmpty. Operand 14912 states and 53988 transitions. [2021-06-05 22:32:31,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:32:31,020 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:32:31,020 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:32:31,020 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264 [2021-06-05 22:32:31,020 INFO L430 AbstractCegarLoop]: === Iteration 266 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:32:31,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:32:31,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1792989390, now seen corresponding path program 266 times [2021-06-05 22:32:31,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:32:31,021 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469568594] [2021-06-05 22:32:31,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:32:31,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:32:31,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:32:31,188 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:32:31,188 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469568594] [2021-06-05 22:32:31,188 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469568594] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:32:31,188 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:32:31,188 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 22:32:31,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330764385] [2021-06-05 22:32:31,188 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 22:32:31,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:32:31,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 22:32:31,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 22:32:31,188 INFO L87 Difference]: Start difference. First operand 14912 states and 53988 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:32,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:32:32,388 INFO L93 Difference]: Finished difference Result 16790 states and 60541 transitions. [2021-06-05 22:32:32,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 22:32:32,388 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:32:32,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:32:32,419 INFO L225 Difference]: With dead ends: 16790 [2021-06-05 22:32:32,419 INFO L226 Difference]: Without dead ends: 16693 [2021-06-05 22:32:32,420 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 637.8ms TimeCoverageRelationStatistics Valid=205, Invalid=1865, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 22:32:32,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16693 states. [2021-06-05 22:32:32,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16693 to 14912. [2021-06-05 22:32:32,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14912 states, 14911 states have (on average 3.620682717456911) internal successors, (53988), 14911 states have internal predecessors, (53988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:32,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14912 states to 14912 states and 53988 transitions. [2021-06-05 22:32:32,693 INFO L78 Accepts]: Start accepts. Automaton has 14912 states and 53988 transitions. Word has length 47 [2021-06-05 22:32:32,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:32:32,693 INFO L482 AbstractCegarLoop]: Abstraction has 14912 states and 53988 transitions. [2021-06-05 22:32:32,693 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:32,693 INFO L276 IsEmpty]: Start isEmpty. Operand 14912 states and 53988 transitions. [2021-06-05 22:32:32,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:32:32,716 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:32:32,716 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:32:32,716 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable265 [2021-06-05 22:32:32,716 INFO L430 AbstractCegarLoop]: === Iteration 267 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:32:32,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:32:32,716 INFO L82 PathProgramCache]: Analyzing trace with hash 776557396, now seen corresponding path program 267 times [2021-06-05 22:32:32,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:32:32,716 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907621920] [2021-06-05 22:32:32,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:32:32,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:32:32,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:32:32,893 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:32:32,893 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907621920] [2021-06-05 22:32:32,893 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907621920] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:32:32,893 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:32:32,893 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:32:32,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073598769] [2021-06-05 22:32:32,893 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:32:32,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:32:32,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:32:32,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:32:32,893 INFO L87 Difference]: Start difference. First operand 14912 states and 53988 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:34,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:32:34,174 INFO L93 Difference]: Finished difference Result 16691 states and 60236 transitions. [2021-06-05 22:32:34,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 22:32:34,175 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:32:34,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:32:34,206 INFO L225 Difference]: With dead ends: 16691 [2021-06-05 22:32:34,206 INFO L226 Difference]: Without dead ends: 16574 [2021-06-05 22:32:34,207 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 695.4ms TimeCoverageRelationStatistics Valid=208, Invalid=1954, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 22:32:34,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16574 states. [2021-06-05 22:32:34,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16574 to 14900. [2021-06-05 22:32:34,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14900 states, 14899 states have (on average 3.6210483925095645) internal successors, (53950), 14899 states have internal predecessors, (53950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:34,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14900 states to 14900 states and 53950 transitions. [2021-06-05 22:32:34,494 INFO L78 Accepts]: Start accepts. Automaton has 14900 states and 53950 transitions. Word has length 47 [2021-06-05 22:32:34,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:32:34,494 INFO L482 AbstractCegarLoop]: Abstraction has 14900 states and 53950 transitions. [2021-06-05 22:32:34,495 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:34,495 INFO L276 IsEmpty]: Start isEmpty. Operand 14900 states and 53950 transitions. [2021-06-05 22:32:34,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:32:34,520 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:32:34,520 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:32:34,520 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266 [2021-06-05 22:32:34,520 INFO L430 AbstractCegarLoop]: === Iteration 268 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:32:34,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:32:34,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1936591320, now seen corresponding path program 268 times [2021-06-05 22:32:34,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:32:34,520 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264273585] [2021-06-05 22:32:34,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:32:34,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:32:34,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:32:34,702 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:32:34,702 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264273585] [2021-06-05 22:32:34,703 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264273585] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:32:34,703 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:32:34,703 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:32:34,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279782233] [2021-06-05 22:32:34,703 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:32:34,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:32:34,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:32:34,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:32:34,703 INFO L87 Difference]: Start difference. First operand 14900 states and 53950 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:36,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:32:36,203 INFO L93 Difference]: Finished difference Result 17175 states and 61913 transitions. [2021-06-05 22:32:36,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 22:32:36,203 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:32:36,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:32:36,235 INFO L225 Difference]: With dead ends: 17175 [2021-06-05 22:32:36,236 INFO L226 Difference]: Without dead ends: 17048 [2021-06-05 22:32:36,236 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 811.3ms TimeCoverageRelationStatistics Valid=269, Invalid=2593, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 22:32:36,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17048 states. [2021-06-05 22:32:36,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17048 to 14920. [2021-06-05 22:32:36,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14920 states, 14919 states have (on average 3.6200817749178897) internal successors, (54008), 14919 states have internal predecessors, (54008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:36,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14920 states to 14920 states and 54008 transitions. [2021-06-05 22:32:36,603 INFO L78 Accepts]: Start accepts. Automaton has 14920 states and 54008 transitions. Word has length 47 [2021-06-05 22:32:36,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:32:36,603 INFO L482 AbstractCegarLoop]: Abstraction has 14920 states and 54008 transitions. [2021-06-05 22:32:36,603 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:36,603 INFO L276 IsEmpty]: Start isEmpty. Operand 14920 states and 54008 transitions. [2021-06-05 22:32:36,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:32:36,627 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:32:36,627 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:32:36,627 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable267 [2021-06-05 22:32:36,627 INFO L430 AbstractCegarLoop]: === Iteration 269 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:32:36,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:32:36,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1007627372, now seen corresponding path program 269 times [2021-06-05 22:32:36,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:32:36,628 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959966925] [2021-06-05 22:32:36,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:32:36,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:32:36,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:32:36,816 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:32:36,816 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959966925] [2021-06-05 22:32:36,816 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959966925] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:32:36,816 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:32:36,816 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:32:36,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115695008] [2021-06-05 22:32:36,817 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:32:36,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:32:36,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:32:36,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:32:36,817 INFO L87 Difference]: Start difference. First operand 14920 states and 54008 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:39,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:32:39,735 INFO L93 Difference]: Finished difference Result 19971 states and 72303 transitions. [2021-06-05 22:32:39,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-06-05 22:32:39,736 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:32:39,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:32:39,774 INFO L225 Difference]: With dead ends: 19971 [2021-06-05 22:32:39,774 INFO L226 Difference]: Without dead ends: 19882 [2021-06-05 22:32:39,775 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1894 ImplicationChecksByTransitivity, 1649.1ms TimeCoverageRelationStatistics Valid=576, Invalid=5744, Unknown=0, NotChecked=0, Total=6320 [2021-06-05 22:32:39,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19882 states. [2021-06-05 22:32:40,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19882 to 14928. [2021-06-05 22:32:40,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14928 states, 14927 states have (on average 3.620017418101427) internal successors, (54036), 14927 states have internal predecessors, (54036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:40,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14928 states to 14928 states and 54036 transitions. [2021-06-05 22:32:40,068 INFO L78 Accepts]: Start accepts. Automaton has 14928 states and 54036 transitions. Word has length 47 [2021-06-05 22:32:40,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:32:40,068 INFO L482 AbstractCegarLoop]: Abstraction has 14928 states and 54036 transitions. [2021-06-05 22:32:40,068 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:40,068 INFO L276 IsEmpty]: Start isEmpty. Operand 14928 states and 54036 transitions. [2021-06-05 22:32:40,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:32:40,175 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:32:40,175 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:32:40,175 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268 [2021-06-05 22:32:40,175 INFO L430 AbstractCegarLoop]: === Iteration 270 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:32:40,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:32:40,176 INFO L82 PathProgramCache]: Analyzing trace with hash 156975464, now seen corresponding path program 270 times [2021-06-05 22:32:40,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:32:40,176 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801484185] [2021-06-05 22:32:40,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:32:40,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:32:40,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:32:40,357 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:32:40,357 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801484185] [2021-06-05 22:32:40,357 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801484185] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:32:40,357 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:32:40,357 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:32:40,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612441763] [2021-06-05 22:32:40,358 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:32:40,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:32:40,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:32:40,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:32:40,358 INFO L87 Difference]: Start difference. First operand 14928 states and 54036 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:43,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:32:43,553 INFO L93 Difference]: Finished difference Result 20913 states and 75964 transitions. [2021-06-05 22:32:43,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-06-05 22:32:43,553 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:32:43,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:32:43,593 INFO L225 Difference]: With dead ends: 20913 [2021-06-05 22:32:43,593 INFO L226 Difference]: Without dead ends: 20810 [2021-06-05 22:32:43,594 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2692 ImplicationChecksByTransitivity, 1776.0ms TimeCoverageRelationStatistics Valid=663, Invalid=7709, Unknown=0, NotChecked=0, Total=8372 [2021-06-05 22:32:43,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20810 states. [2021-06-05 22:32:43,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20810 to 14924. [2021-06-05 22:32:43,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14924 states, 14923 states have (on average 3.620853715740803) internal successors, (54034), 14923 states have internal predecessors, (54034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:44,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14924 states to 14924 states and 54034 transitions. [2021-06-05 22:32:44,011 INFO L78 Accepts]: Start accepts. Automaton has 14924 states and 54034 transitions. Word has length 47 [2021-06-05 22:32:44,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:32:44,011 INFO L482 AbstractCegarLoop]: Abstraction has 14924 states and 54034 transitions. [2021-06-05 22:32:44,011 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:44,012 INFO L276 IsEmpty]: Start isEmpty. Operand 14924 states and 54034 transitions. [2021-06-05 22:32:44,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:32:44,036 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:32:44,037 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:32:44,037 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269 [2021-06-05 22:32:44,037 INFO L430 AbstractCegarLoop]: === Iteration 271 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:32:44,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:32:44,037 INFO L82 PathProgramCache]: Analyzing trace with hash -394667962, now seen corresponding path program 271 times [2021-06-05 22:32:44,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:32:44,037 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098772786] [2021-06-05 22:32:44,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:32:44,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:32:44,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:32:44,232 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:32:44,232 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098772786] [2021-06-05 22:32:44,232 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098772786] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:32:44,232 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:32:44,232 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:32:44,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141328558] [2021-06-05 22:32:44,232 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:32:44,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:32:44,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:32:44,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:32:44,233 INFO L87 Difference]: Start difference. First operand 14924 states and 54034 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:45,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:32:45,567 INFO L93 Difference]: Finished difference Result 17047 states and 61393 transitions. [2021-06-05 22:32:45,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 22:32:45,567 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:32:45,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:32:45,599 INFO L225 Difference]: With dead ends: 17047 [2021-06-05 22:32:45,599 INFO L226 Difference]: Without dead ends: 16920 [2021-06-05 22:32:45,599 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 708.2ms TimeCoverageRelationStatistics Valid=206, Invalid=1956, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 22:32:45,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16920 states. [2021-06-05 22:32:45,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16920 to 14948. [2021-06-05 22:32:45,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14948 states, 14947 states have (on average 3.619589215227136) internal successors, (54102), 14947 states have internal predecessors, (54102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:45,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14948 states to 14948 states and 54102 transitions. [2021-06-05 22:32:45,870 INFO L78 Accepts]: Start accepts. Automaton has 14948 states and 54102 transitions. Word has length 47 [2021-06-05 22:32:45,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:32:45,870 INFO L482 AbstractCegarLoop]: Abstraction has 14948 states and 54102 transitions. [2021-06-05 22:32:45,870 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:45,870 INFO L276 IsEmpty]: Start isEmpty. Operand 14948 states and 54102 transitions. [2021-06-05 22:32:45,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:32:45,894 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:32:45,894 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:32:45,894 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable270 [2021-06-05 22:32:45,894 INFO L430 AbstractCegarLoop]: === Iteration 272 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:32:45,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:32:45,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1432703298, now seen corresponding path program 272 times [2021-06-05 22:32:45,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:32:45,894 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215082095] [2021-06-05 22:32:45,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:32:45,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:32:46,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:32:46,080 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:32:46,080 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215082095] [2021-06-05 22:32:46,081 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215082095] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:32:46,081 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:32:46,081 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:32:46,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872425836] [2021-06-05 22:32:46,081 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:32:46,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:32:46,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:32:46,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:32:46,081 INFO L87 Difference]: Start difference. First operand 14948 states and 54102 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:47,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:32:47,427 INFO L93 Difference]: Finished difference Result 17240 states and 61985 transitions. [2021-06-05 22:32:47,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 22:32:47,427 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:32:47,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:32:47,461 INFO L225 Difference]: With dead ends: 17240 [2021-06-05 22:32:47,461 INFO L226 Difference]: Without dead ends: 17143 [2021-06-05 22:32:47,462 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 591 ImplicationChecksByTransitivity, 778.1ms TimeCoverageRelationStatistics Valid=242, Invalid=2410, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 22:32:47,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17143 states. [2021-06-05 22:32:47,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17143 to 14948. [2021-06-05 22:32:47,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14948 states, 14947 states have (on average 3.619589215227136) internal successors, (54102), 14947 states have internal predecessors, (54102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:47,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14948 states to 14948 states and 54102 transitions. [2021-06-05 22:32:47,741 INFO L78 Accepts]: Start accepts. Automaton has 14948 states and 54102 transitions. Word has length 47 [2021-06-05 22:32:47,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:32:47,741 INFO L482 AbstractCegarLoop]: Abstraction has 14948 states and 54102 transitions. [2021-06-05 22:32:47,741 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:47,741 INFO L276 IsEmpty]: Start isEmpty. Operand 14948 states and 54102 transitions. [2021-06-05 22:32:47,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:32:47,765 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:32:47,765 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:32:47,765 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271 [2021-06-05 22:32:47,765 INFO L430 AbstractCegarLoop]: === Iteration 273 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:32:47,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:32:47,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1435377124, now seen corresponding path program 273 times [2021-06-05 22:32:47,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:32:47,766 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543252687] [2021-06-05 22:32:47,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:32:47,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:32:47,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:32:47,944 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:32:47,944 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543252687] [2021-06-05 22:32:47,944 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543252687] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:32:47,944 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:32:47,944 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:32:47,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160529898] [2021-06-05 22:32:47,944 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:32:47,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:32:47,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:32:47,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:32:47,944 INFO L87 Difference]: Start difference. First operand 14948 states and 54102 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:49,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:32:49,257 INFO L93 Difference]: Finished difference Result 17017 states and 61290 transitions. [2021-06-05 22:32:49,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 22:32:49,258 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:32:49,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:32:49,290 INFO L225 Difference]: With dead ends: 17017 [2021-06-05 22:32:49,291 INFO L226 Difference]: Without dead ends: 16908 [2021-06-05 22:32:49,291 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 679.5ms TimeCoverageRelationStatistics Valid=216, Invalid=2040, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 22:32:49,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16908 states. [2021-06-05 22:32:49,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16908 to 14936. [2021-06-05 22:32:49,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14936 states, 14935 states have (on average 3.620220957482424) internal successors, (54068), 14935 states have internal predecessors, (54068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:49,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14936 states to 14936 states and 54068 transitions. [2021-06-05 22:32:49,582 INFO L78 Accepts]: Start accepts. Automaton has 14936 states and 54068 transitions. Word has length 47 [2021-06-05 22:32:49,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:32:49,582 INFO L482 AbstractCegarLoop]: Abstraction has 14936 states and 54068 transitions. [2021-06-05 22:32:49,582 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:49,582 INFO L276 IsEmpty]: Start isEmpty. Operand 14936 states and 54068 transitions. [2021-06-05 22:32:49,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:32:49,606 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:32:49,606 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:32:49,606 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272 [2021-06-05 22:32:49,606 INFO L430 AbstractCegarLoop]: === Iteration 274 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:32:49,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:32:49,606 INFO L82 PathProgramCache]: Analyzing trace with hash 126905452, now seen corresponding path program 274 times [2021-06-05 22:32:49,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:32:49,606 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787650857] [2021-06-05 22:32:49,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:32:49,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:32:49,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:32:49,787 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:32:49,787 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787650857] [2021-06-05 22:32:49,787 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787650857] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:32:49,787 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:32:49,787 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:32:49,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114109000] [2021-06-05 22:32:49,787 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:32:49,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:32:49,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:32:49,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:32:49,787 INFO L87 Difference]: Start difference. First operand 14936 states and 54068 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:51,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:32:51,316 INFO L93 Difference]: Finished difference Result 17160 states and 61757 transitions. [2021-06-05 22:32:51,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 22:32:51,316 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 22:32:51,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:32:51,348 INFO L225 Difference]: With dead ends: 17160 [2021-06-05 22:32:51,348 INFO L226 Difference]: Without dead ends: 17039 [2021-06-05 22:32:51,349 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 774 ImplicationChecksByTransitivity, 895.2ms TimeCoverageRelationStatistics Valid=292, Invalid=2900, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 22:32:51,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17039 states. [2021-06-05 22:32:51,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17039 to 14936. [2021-06-05 22:32:51,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14936 states, 14935 states have (on average 3.620220957482424) internal successors, (54068), 14935 states have internal predecessors, (54068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:51,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14936 states to 14936 states and 54068 transitions. [2021-06-05 22:32:51,623 INFO L78 Accepts]: Start accepts. Automaton has 14936 states and 54068 transitions. Word has length 47 [2021-06-05 22:32:51,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:32:51,623 INFO L482 AbstractCegarLoop]: Abstraction has 14936 states and 54068 transitions. [2021-06-05 22:32:51,623 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:32:51,623 INFO L276 IsEmpty]: Start isEmpty. Operand 14936 states and 54068 transitions. [2021-06-05 22:32:51,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 22:32:51,647 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:32:51,647 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:32:51,647 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273 [2021-06-05 22:32:51,647 INFO L430 AbstractCegarLoop]: === Iteration 275 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:32:51,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:32:51,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1698326888, now seen corresponding path program 275 times [2021-06-05 22:32:51,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:32:51,647 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102941351] [2021-06-05 22:32:51,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:32:51,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:32:51,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:32:51,826 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:32:51,826 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102941351] [2021-06-05 22:32:51,826 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102941351] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:32:51,826 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:32:51,826 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 22:32:51,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732376676] [2021-06-05 22:32:51,827 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 22:32:51,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:32:51,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 22:32:51,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:32:51,827 INFO L87 Difference]: Start difference. First operand 14936 states and 54068 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2021-06-05 22:32:51,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 22:32:51,975 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274 [2021-06-05 22:32:51,975 WARN L547 AbstractCegarLoop]: Verification canceled [2021-06-05 22:32:51,976 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was TIMEOUT (5/5) [2021-06-05 22:32:51,977 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 22:32:51,979 WARN L196 ceAbstractionStarter]: Timeout [2021-06-05 22:32:51,979 INFO L202 PluginConnector]: Adding new model barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 10:32:51 BasicIcfg [2021-06-05 22:32:51,979 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 22:32:51,979 INFO L168 Benchmark]: Toolchain (without parser) took 738953.06 ms. Allocated memory was 323.0 MB in the beginning and 2.5 GB in the end (delta: 2.2 GB). Free memory was 302.3 MB in the beginning and 950.3 MB in the end (delta: -648.0 MB). Peak memory consumption was 1.6 GB. Max. memory is 16.0 GB. [2021-06-05 22:32:51,980 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 323.0 MB. Free memory is still 303.5 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 22:32:51,980 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.37 ms. Allocated memory is still 323.0 MB. Free memory was 302.2 MB in the beginning and 300.8 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 22:32:51,980 INFO L168 Benchmark]: Boogie Preprocessor took 9.96 ms. Allocated memory is still 323.0 MB. Free memory was 300.8 MB in the beginning and 299.8 MB in the end (delta: 934.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 22:32:51,980 INFO L168 Benchmark]: RCFGBuilder took 201.68 ms. Allocated memory is still 323.0 MB. Free memory was 299.7 MB in the beginning and 286.1 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-06-05 22:32:51,980 INFO L168 Benchmark]: TraceAbstraction took 738716.40 ms. Allocated memory was 323.0 MB in the beginning and 2.5 GB in the end (delta: 2.2 GB). Free memory was 285.7 MB in the beginning and 950.3 MB in the end (delta: -664.6 MB). Peak memory consumption was 1.6 GB. Max. memory is 16.0 GB. [2021-06-05 22:32:51,980 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 323.0 MB. Free memory is still 303.5 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 21.37 ms. Allocated memory is still 323.0 MB. Free memory was 302.2 MB in the beginning and 300.8 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 9.96 ms. Allocated memory is still 323.0 MB. Free memory was 300.8 MB in the beginning and 299.8 MB in the end (delta: 934.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 201.68 ms. Allocated memory is still 323.0 MB. Free memory was 299.7 MB in the beginning and 286.1 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 738716.40 ms. Allocated memory was 323.0 MB in the beginning and 2.5 GB in the end (delta: 2.2 GB). Free memory was 285.7 MB in the beginning and 950.3 MB in the end (delta: -664.6 MB). Peak memory consumption was 1.6 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was constructing difference of abstraction (14936states) and FLOYD_HOARE automaton (currently 7 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (53 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: thread4Thread1of1ForFork4 with 1 thread instances CFG has 13 procedures, 112 locations, 11 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 398.5ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 74.4ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 321.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=7231occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: thread1 with 1 thread instances CFG has 13 procedures, 112 locations, 11 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 316.3ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 34.1ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 281.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=7231occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: thread1Thread1of1ForFork2 with 1 thread instances CFG has 13 procedures, 112 locations, 11 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 218.8ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 31.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 186.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=7231occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: thread4 with 1 thread instances CFG has 13 procedures, 112 locations, 11 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 202.7ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 35.6ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 165.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=7231occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 13 procedures, 112 locations, 11 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 737390.7ms, OverallIterations: 275, TraceHistogramMax: 1, EmptinessCheckTime: 3235.6ms, AutomataDifference: 639956.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 170.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 90243 SDtfs, 182591 SDslu, 1001333 SDs, 0 SdLazy, 746568 SolverSat, 29104 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 220866.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20028 GetRequests, 310 SyntacticMatches, 608 SemanticMatches, 19110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 582218 ImplicationChecksByTransitivity, 375909.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=14998occurred in iteration=248, InterpolantAutomatonStates: 17942, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 42019.8ms AutomataMinimizationTime, 274 MinimizatonAttempts, 965778 StatesRemovedByMinimization, 272 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 150.9ms SsaConstructionTime, 591.6ms SatisfiabilityAnalysisTime, 50330.4ms InterpolantComputationTime, 12925 NumberOfCodeBlocks, 12925 NumberOfCodeBlocksAsserted, 275 NumberOfCheckSat, 12650 ConstructedInterpolants, 0 QuantifiedInterpolants, 161352 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 275 InterpolantComputations, 275 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown