/usr/bin/java -Xmx8000000000 -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 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-09 17:44:32,931 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-09 17:44:32,933 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-09 17:44:32,961 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-09 17:44:33,005 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 [2021-07-09 17:44:33,041 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-09 17:44:33,041 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-09 17:44:33,042 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-09 17:44:33,042 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-09 17:44:33,044 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-09 17:44:33,044 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-09 17:44:33,044 INFO L138 SettingsManager]: * Use SBE=true [2021-07-09 17:44:33,044 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-09 17:44:33,044 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-09 17:44:33,044 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-09 17:44:33,045 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-09 17:44:33,045 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-09 17:44:33,045 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-09 17:44:33,045 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-09 17:44:33,046 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-09 17:44:33,046 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-09 17:44:33,046 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-09 17:44:33,046 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-09 17:44:33,046 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-09 17:44:33,046 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-09 17:44:33,046 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-09 17:44:33,046 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-09 17:44:33,047 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-09 17:44:33,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 17:44:33,047 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-09 17:44:33,047 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-09 17:44:33,047 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-09 17:44:33,047 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-09 17:44:33,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-09 17:44:33,047 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-09 17:44:33,048 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-09 17:44:33,048 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-09 17:44:33,300 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-09 17:44:33,315 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-09 17:44:33,317 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-09 17:44:33,317 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-09 17:44:33,318 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-09 17:44:33,319 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/barrier.wvr.bpl [2021-07-09 17:44:33,319 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/barrier.wvr.bpl' [2021-07-09 17:44:33,448 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-09 17:44:33,450 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-09 17:44:33,451 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-09 17:44:33,451 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-09 17:44:33,451 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-09 17:44:33,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:44:33" (1/1) ... [2021-07-09 17:44:33,466 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:44:33" (1/1) ... [2021-07-09 17:44:33,471 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-09 17:44:33,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-09 17:44:33,472 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-09 17:44:33,473 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-09 17:44:33,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:44:33" (1/1) ... [2021-07-09 17:44:33,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:44:33" (1/1) ... [2021-07-09 17:44:33,480 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:44:33" (1/1) ... [2021-07-09 17:44:33,480 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:44:33" (1/1) ... [2021-07-09 17:44:33,486 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:44:33" (1/1) ... [2021-07-09 17:44:33,487 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:44:33" (1/1) ... [2021-07-09 17:44:33,487 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:44:33" (1/1) ... [2021-07-09 17:44:33,491 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-09 17:44:33,492 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-09 17:44:33,492 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-09 17:44:33,492 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-09 17:44:33,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:44:33" (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 [2021-07-09 17:44:33,545 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-09 17:44:33,546 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-09 17:44:33,546 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-09 17:44:33,546 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-09 17:44:33,546 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-09 17:44:33,546 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-09 17:44:33,546 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-09 17:44:33,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-09 17:44:33,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-09 17:44:33,546 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-09 17:44:33,546 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-09 17:44:33,546 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-09 17:44:33,547 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-07-09 17:44:33,547 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-07-09 17:44:33,547 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-07-09 17:44:33,547 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-07-09 17:44:33,547 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-07-09 17:44:33,547 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-07-09 17:44:33,547 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2021-07-09 17:44:33,547 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2021-07-09 17:44:33,547 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2021-07-09 17:44:33,548 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-09 17:44:33,747 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-09 17:44:33,748 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-09 17:44:33,749 INFO L202 PluginConnector]: Adding new model barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 05:44:33 BoogieIcfgContainer [2021-07-09 17:44:33,749 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-09 17:44:33,750 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-09 17:44:33,750 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-09 17:44:33,752 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-09 17:44:33,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:44:33" (1/2) ... [2021-07-09 17:44:33,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28f4d9d8 and model type barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 05:44:33, skipping insertion in model container [2021-07-09 17:44:33,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 05:44:33" (2/2) ... [2021-07-09 17:44:33,754 INFO L111 eAbstractionObserver]: Analyzing ICFG barrier.wvr.bpl [2021-07-09 17:44:33,773 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-09 17:44:33,773 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-09 17:44:33,773 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-09 17:44:33,774 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-09 17:44:33,908 INFO L149 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2021-07-09 17:44:33,931 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-07-09 17:44:33,959 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-09 17:44:33,959 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-09 17:44:33,959 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-09 17:44:33,959 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-09 17:44:33,959 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-09 17:44:33,959 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-09 17:44:33,959 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-09 17:44:33,959 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == thread4Thread1of1ForFork4======== [2021-07-09 17:44:33,969 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 80 places, 65 transitions, 202 flow [2021-07-09 17:44:34,030 INFO L132 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 936 states, 935 states have (on average 2.744385026737968) internal successors, (2566), 935 states have internal predecessors, (2566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:44:34,033 INFO L276 IsEmpty]: Start isEmpty. Operand has 936 states, 935 states have (on average 2.744385026737968) internal successors, (2566), 935 states have internal predecessors, (2566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:44:34,052 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-09 17:44:34,053 INFO L301 ceAbstractionStarter]: Result for error location thread4Thread1of1ForFork4 was SAFE (1/3) [2021-07-09 17:44:34,054 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-07-09 17:44:34,059 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-09 17:44:34,059 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-09 17:44:34,059 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-09 17:44:34,059 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-09 17:44:34,059 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-09 17:44:34,059 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-09 17:44:34,059 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-09 17:44:34,059 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-09 17:44:34,062 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 80 places, 65 transitions, 202 flow [2021-07-09 17:44:34,284 INFO L132 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 7229 states, 7228 states have (on average 3.6694798007747647) internal successors, (26523), 7228 states have internal predecessors, (26523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:44:34,308 INFO L276 IsEmpty]: Start isEmpty. Operand has 7229 states, 7228 states have (on average 3.6694798007747647) internal successors, (26523), 7228 states have internal predecessors, (26523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:44:34,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:44:34,336 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:44:34,336 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:44:34,337 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:44:34,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:44:34,340 INFO L82 PathProgramCache]: Analyzing trace with hash -190243142, now seen corresponding path program 1 times [2021-07-09 17:44:34,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:44:34,346 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256687244] [2021-07-09 17:44:34,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:44:34,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:44:34,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:44:34,443 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:44:34,443 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256687244] [2021-07-09 17:44:34,444 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256687244] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:44:34,444 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:44:34,444 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-09 17:44:34,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136575275] [2021-07-09 17:44:34,447 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-09 17:44:34,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:44:34,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-09 17:44:34,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 17:44:34,471 INFO L87 Difference]: Start difference. First operand has 7229 states, 7228 states have (on average 3.6694798007747647) internal successors, (26523), 7228 states have internal predecessors, (26523), 0 states have call successors, (0), 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) [2021-07-09 17:44:34,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:44:34,565 INFO L93 Difference]: Finished difference Result 5614 states and 20074 transitions. [2021-07-09 17:44:34,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 17:44:34,566 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 [2021-07-09 17:44:34,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:44:34,617 INFO L225 Difference]: With dead ends: 5614 [2021-07-09 17:44:34,617 INFO L226 Difference]: Without dead ends: 5614 [2021-07-09 17:44:34,619 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 17:44:34,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5614 states. [2021-07-09 17:44:34,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5614 to 5614. [2021-07-09 17:44:34,846 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) [2021-07-09 17:44:34,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5614 states to 5614 states and 20074 transitions. [2021-07-09 17:44:34,869 INFO L78 Accepts]: Start accepts. Automaton has 5614 states and 20074 transitions. Word has length 47 [2021-07-09 17:44:34,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:44:34,869 INFO L482 AbstractCegarLoop]: Abstraction has 5614 states and 20074 transitions. [2021-07-09 17:44:34,870 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) [2021-07-09 17:44:34,870 INFO L276 IsEmpty]: Start isEmpty. Operand 5614 states and 20074 transitions. [2021-07-09 17:44:34,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:44:34,884 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:44:34,884 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:44:34,885 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-09 17:44:34,885 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:44:34,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:44:34,891 INFO L82 PathProgramCache]: Analyzing trace with hash -607358788, now seen corresponding path program 2 times [2021-07-09 17:44:34,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:44:34,891 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797003449] [2021-07-09 17:44:34,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:44:34,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:44:34,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:44:34,939 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:44:34,939 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797003449] [2021-07-09 17:44:34,939 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797003449] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:44:34,939 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:44:34,939 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-09 17:44:34,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680878209] [2021-07-09 17:44:34,940 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-09 17:44:34,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:44:34,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-09 17:44:34,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 17:44:34,941 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) [2021-07-09 17:44:35,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:44:35,035 INFO L93 Difference]: Finished difference Result 4822 states and 17110 transitions. [2021-07-09 17:44:35,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 17:44:35,036 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 [2021-07-09 17:44:35,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:44:35,058 INFO L225 Difference]: With dead ends: 4822 [2021-07-09 17:44:35,058 INFO L226 Difference]: Without dead ends: 4822 [2021-07-09 17:44:35,059 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 17:44:35,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4822 states. [2021-07-09 17:44:35,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4822 to 4822. [2021-07-09 17:44:35,189 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) [2021-07-09 17:44:35,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4822 states to 4822 states and 17110 transitions. [2021-07-09 17:44:35,206 INFO L78 Accepts]: Start accepts. Automaton has 4822 states and 17110 transitions. Word has length 47 [2021-07-09 17:44:35,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:44:35,207 INFO L482 AbstractCegarLoop]: Abstraction has 4822 states and 17110 transitions. [2021-07-09 17:44:35,207 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) [2021-07-09 17:44:35,207 INFO L276 IsEmpty]: Start isEmpty. Operand 4822 states and 17110 transitions. [2021-07-09 17:44:35,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:44:35,219 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:44:35,219 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:44:35,219 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-09 17:44:35,219 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:44:35,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:44:35,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1880871100, now seen corresponding path program 3 times [2021-07-09 17:44:35,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:44:35,220 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365695803] [2021-07-09 17:44:35,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:44:35,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:44:35,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:44:35,622 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:44:35,622 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365695803] [2021-07-09 17:44:35,623 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365695803] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:44:35,623 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:44:35,623 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:44:35,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906750811] [2021-07-09 17:44:35,623 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:44:35,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:44:35,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:44:35,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:44:35,624 INFO L87 Difference]: Start difference. First operand 4822 states and 17110 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) [2021-07-09 17:44:37,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:44:37,094 INFO L93 Difference]: Finished difference Result 5573 states and 19644 transitions. [2021-07-09 17:44:37,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-09 17:44:37,094 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 [2021-07-09 17:44:37,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:44:37,118 INFO L225 Difference]: With dead ends: 5573 [2021-07-09 17:44:37,118 INFO L226 Difference]: Without dead ends: 5446 [2021-07-09 17:44:37,118 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 885.0ms TimeCoverageRelationStatistics Valid=167, Invalid=1555, Unknown=0, NotChecked=0, Total=1722 [2021-07-09 17:44:37,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5446 states. [2021-07-09 17:44:37,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5446 to 5018. [2021-07-09 17:44:37,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 5017 states have (on average 3.53757225433526) internal successors, (17748), 5017 states have internal predecessors, (17748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:44:37,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 17748 transitions. [2021-07-09 17:44:37,244 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 17748 transitions. Word has length 47 [2021-07-09 17:44:37,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:44:37,244 INFO L482 AbstractCegarLoop]: Abstraction has 5018 states and 17748 transitions. [2021-07-09 17:44:37,244 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) [2021-07-09 17:44:37,244 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 17748 transitions. [2021-07-09 17:44:37,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:44:37,256 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:44:37,257 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:44:37,257 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-09 17:44:37,257 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:44:37,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:44:37,257 INFO L82 PathProgramCache]: Analyzing trace with hash 530122496, now seen corresponding path program 4 times [2021-07-09 17:44:37,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:44:37,258 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907128767] [2021-07-09 17:44:37,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:44:37,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:44:37,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:44:37,626 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:44:37,626 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907128767] [2021-07-09 17:44:37,627 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907128767] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:44:37,627 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:44:37,627 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:44:37,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016567542] [2021-07-09 17:44:37,627 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:44:37,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:44:37,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:44:37,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:44:37,628 INFO L87 Difference]: Start difference. First operand 5018 states and 17748 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) [2021-07-09 17:44:39,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:44:39,562 INFO L93 Difference]: Finished difference Result 7632 states and 26869 transitions. [2021-07-09 17:44:39,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-07-09 17:44:39,563 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 [2021-07-09 17:44:39,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:44:39,590 INFO L225 Difference]: With dead ends: 7632 [2021-07-09 17:44:39,590 INFO L226 Difference]: Without dead ends: 7543 [2021-07-09 17:44:39,591 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 1122.4ms TimeCoverageRelationStatistics Valid=262, Invalid=2288, Unknown=0, NotChecked=0, Total=2550 [2021-07-09 17:44:39,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7543 states. [2021-07-09 17:44:39,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7543 to 5222. [2021-07-09 17:44:39,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5222 states, 5221 states have (on average 3.5276766902892165) internal successors, (18418), 5221 states have internal predecessors, (18418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:44:39,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5222 states to 5222 states and 18418 transitions. [2021-07-09 17:44:39,762 INFO L78 Accepts]: Start accepts. Automaton has 5222 states and 18418 transitions. Word has length 47 [2021-07-09 17:44:39,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:44:39,762 INFO L482 AbstractCegarLoop]: Abstraction has 5222 states and 18418 transitions. [2021-07-09 17:44:39,762 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) [2021-07-09 17:44:39,762 INFO L276 IsEmpty]: Start isEmpty. Operand 5222 states and 18418 transitions. [2021-07-09 17:44:39,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:44:39,773 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:44:39,773 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:44:39,774 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-09 17:44:39,774 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:44:39,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:44:39,774 INFO L82 PathProgramCache]: Analyzing trace with hash -320529412, now seen corresponding path program 5 times [2021-07-09 17:44:39,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:44:39,774 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88777958] [2021-07-09 17:44:39,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:44:39,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:44:40,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:44:40,086 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:44:40,086 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88777958] [2021-07-09 17:44:40,087 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88777958] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:44:40,087 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:44:40,087 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:44:40,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177504644] [2021-07-09 17:44:40,087 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:44:40,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:44:40,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:44:40,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:44:40,088 INFO L87 Difference]: Start difference. First operand 5222 states and 18418 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) [2021-07-09 17:44:41,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:44:41,932 INFO L93 Difference]: Finished difference Result 8296 states and 29491 transitions. [2021-07-09 17:44:41,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-07-09 17:44:41,933 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 [2021-07-09 17:44:41,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:44:41,954 INFO L225 Difference]: With dead ends: 8296 [2021-07-09 17:44:41,955 INFO L226 Difference]: Without dead ends: 8193 [2021-07-09 17:44:41,955 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 1019.6ms TimeCoverageRelationStatistics Valid=256, Invalid=2396, Unknown=0, NotChecked=0, Total=2652 [2021-07-09 17:44:41,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8193 states. [2021-07-09 17:44:42,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8193 to 5210. [2021-07-09 17:44:42,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5210 states, 5209 states have (on average 3.5288923017853713) internal successors, (18382), 5209 states have internal predecessors, (18382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:44:42,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5210 states to 5210 states and 18382 transitions. [2021-07-09 17:44:42,093 INFO L78 Accepts]: Start accepts. Automaton has 5210 states and 18382 transitions. Word has length 47 [2021-07-09 17:44:42,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:44:42,093 INFO L482 AbstractCegarLoop]: Abstraction has 5210 states and 18382 transitions. [2021-07-09 17:44:42,093 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) [2021-07-09 17:44:42,093 INFO L276 IsEmpty]: Start isEmpty. Operand 5210 states and 18382 transitions. [2021-07-09 17:44:42,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:44:42,109 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:44:42,109 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:44:42,109 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-09 17:44:42,109 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:44:42,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:44:42,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1855278140, now seen corresponding path program 6 times [2021-07-09 17:44:42,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:44:42,110 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226476768] [2021-07-09 17:44:42,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:44:42,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:44:42,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:44:42,361 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:44:42,362 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226476768] [2021-07-09 17:44:42,362 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226476768] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:44:42,362 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:44:42,362 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 17:44:42,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309286938] [2021-07-09 17:44:42,362 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 17:44:42,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:44:42,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 17:44:42,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-07-09 17:44:42,363 INFO L87 Difference]: Start difference. First operand 5210 states and 18382 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) [2021-07-09 17:44:43,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:44:43,919 INFO L93 Difference]: Finished difference Result 6915 states and 24041 transitions. [2021-07-09 17:44:43,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-07-09 17:44:43,920 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 [2021-07-09 17:44:43,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:44:43,937 INFO L225 Difference]: With dead ends: 6915 [2021-07-09 17:44:43,937 INFO L226 Difference]: Without dead ends: 6778 [2021-07-09 17:44:43,938 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 961.8ms TimeCoverageRelationStatistics Valid=224, Invalid=2032, Unknown=0, NotChecked=0, Total=2256 [2021-07-09 17:44:43,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6778 states. [2021-07-09 17:44:44,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6778 to 5402. [2021-07-09 17:44:44,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5402 states, 5401 states have (on average 3.517867061655249) internal successors, (19000), 5401 states have internal predecessors, (19000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:44:44,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5402 states to 5402 states and 19000 transitions. [2021-07-09 17:44:44,084 INFO L78 Accepts]: Start accepts. Automaton has 5402 states and 19000 transitions. Word has length 47 [2021-07-09 17:44:44,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:44:44,084 INFO L482 AbstractCegarLoop]: Abstraction has 5402 states and 19000 transitions. [2021-07-09 17:44:44,084 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) [2021-07-09 17:44:44,084 INFO L276 IsEmpty]: Start isEmpty. Operand 5402 states and 19000 transitions. [2021-07-09 17:44:44,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:44:44,095 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:44:44,096 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:44:44,096 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-09 17:44:44,096 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:44:44,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:44:44,096 INFO L82 PathProgramCache]: Analyzing trace with hash -123596322, now seen corresponding path program 7 times [2021-07-09 17:44:44,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:44:44,097 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596698828] [2021-07-09 17:44:44,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:44:44,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:44:44,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:44:44,399 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:44:44,399 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596698828] [2021-07-09 17:44:44,399 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596698828] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:44:44,399 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:44:44,399 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:44:44,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92151537] [2021-07-09 17:44:44,400 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:44:44,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:44:44,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:44:44,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:44:44,401 INFO L87 Difference]: Start difference. First operand 5402 states and 19000 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) [2021-07-09 17:44:46,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:44:46,227 INFO L93 Difference]: Finished difference Result 7850 states and 27581 transitions. [2021-07-09 17:44:46,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-07-09 17:44:46,228 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 [2021-07-09 17:44:46,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:44:46,245 INFO L225 Difference]: With dead ends: 7850 [2021-07-09 17:44:46,245 INFO L226 Difference]: Without dead ends: 7761 [2021-07-09 17:44:46,246 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 643 ImplicationChecksByTransitivity, 1137.5ms TimeCoverageRelationStatistics Valid=298, Invalid=2564, Unknown=0, NotChecked=0, Total=2862 [2021-07-09 17:44:46,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7761 states. [2021-07-09 17:44:46,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7761 to 5406. [2021-07-09 17:44:46,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5406 states, 5405 states have (on average 3.5167437557816834) internal successors, (19008), 5405 states have internal predecessors, (19008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:44:46,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5406 states to 5406 states and 19008 transitions. [2021-07-09 17:44:46,363 INFO L78 Accepts]: Start accepts. Automaton has 5406 states and 19008 transitions. Word has length 47 [2021-07-09 17:44:46,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:44:46,364 INFO L482 AbstractCegarLoop]: Abstraction has 5406 states and 19008 transitions. [2021-07-09 17:44:46,364 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) [2021-07-09 17:44:46,364 INFO L276 IsEmpty]: Start isEmpty. Operand 5406 states and 19008 transitions. [2021-07-09 17:44:46,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:44:46,374 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:44:46,374 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:44:46,374 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-09 17:44:46,374 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:44:46,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:44:46,375 INFO L82 PathProgramCache]: Analyzing trace with hash -974248230, now seen corresponding path program 8 times [2021-07-09 17:44:46,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:44:46,375 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927992085] [2021-07-09 17:44:46,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:44:46,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:44:46,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:44:46,629 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:44:46,629 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927992085] [2021-07-09 17:44:46,629 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927992085] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:44:46,629 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:44:46,629 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:44:46,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147784811] [2021-07-09 17:44:46,629 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:44:46,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:44:46,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:44:46,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:44:46,630 INFO L87 Difference]: Start difference. First operand 5406 states and 19008 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) [2021-07-09 17:44:48,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:44:48,450 INFO L93 Difference]: Finished difference Result 8217 states and 29113 transitions. [2021-07-09 17:44:48,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-07-09 17:44:48,450 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 [2021-07-09 17:44:48,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:44:48,468 INFO L225 Difference]: With dead ends: 8217 [2021-07-09 17:44:48,469 INFO L226 Difference]: Without dead ends: 8086 [2021-07-09 17:44:48,470 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 613 ImplicationChecksByTransitivity, 1115.3ms TimeCoverageRelationStatistics Valid=275, Invalid=2481, Unknown=0, NotChecked=0, Total=2756 [2021-07-09 17:44:48,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8086 states. [2021-07-09 17:44:48,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8086 to 5366. [2021-07-09 17:44:48,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5366 states, 5365 states have (on average 3.5183597390493944) internal successors, (18876), 5365 states have internal predecessors, (18876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:44:48,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5366 states to 5366 states and 18876 transitions. [2021-07-09 17:44:48,601 INFO L78 Accepts]: Start accepts. Automaton has 5366 states and 18876 transitions. Word has length 47 [2021-07-09 17:44:48,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:44:48,602 INFO L482 AbstractCegarLoop]: Abstraction has 5366 states and 18876 transitions. [2021-07-09 17:44:48,602 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) [2021-07-09 17:44:48,602 INFO L276 IsEmpty]: Start isEmpty. Operand 5366 states and 18876 transitions. [2021-07-09 17:44:48,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:44:48,612 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:44:48,613 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:44:48,613 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-09 17:44:48,613 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:44:48,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:44:48,613 INFO L82 PathProgramCache]: Analyzing trace with hash -813197124, now seen corresponding path program 9 times [2021-07-09 17:44:48,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:44:48,614 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781196927] [2021-07-09 17:44:48,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:44:48,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:44:48,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:44:48,887 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:44:48,887 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781196927] [2021-07-09 17:44:48,888 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781196927] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:44:48,888 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:44:48,888 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:44:48,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980557182] [2021-07-09 17:44:48,888 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:44:48,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:44:48,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:44:48,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:44:48,889 INFO L87 Difference]: Start difference. First operand 5366 states and 18876 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:44:50,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:44:50,138 INFO L93 Difference]: Finished difference Result 6007 states and 21031 transitions. [2021-07-09 17:44:50,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-07-09 17:44:50,140 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:44:50,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:44:50,152 INFO L225 Difference]: With dead ends: 6007 [2021-07-09 17:44:50,152 INFO L226 Difference]: Without dead ends: 5880 [2021-07-09 17:44:50,153 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 783.3ms TimeCoverageRelationStatistics Valid=196, Invalid=1874, Unknown=0, NotChecked=0, Total=2070 [2021-07-09 17:44:50,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5880 states. [2021-07-09 17:44:50,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5880 to 5378. [2021-07-09 17:44:50,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5378 states, 5377 states have (on average 3.5160870373814395) internal successors, (18906), 5377 states have internal predecessors, (18906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:44:50,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5378 states to 5378 states and 18906 transitions. [2021-07-09 17:44:50,259 INFO L78 Accepts]: Start accepts. Automaton has 5378 states and 18906 transitions. Word has length 47 [2021-07-09 17:44:50,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:44:50,259 INFO L482 AbstractCegarLoop]: Abstraction has 5378 states and 18906 transitions. [2021-07-09 17:44:50,259 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:44:50,259 INFO L276 IsEmpty]: Start isEmpty. Operand 5378 states and 18906 transitions. [2021-07-09 17:44:50,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:44:50,270 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:44:50,270 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:44:50,270 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-07-09 17:44:50,270 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:44:50,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:44:50,270 INFO L82 PathProgramCache]: Analyzing trace with hash 2131021568, now seen corresponding path program 10 times [2021-07-09 17:44:50,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:44:50,271 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390906375] [2021-07-09 17:44:50,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:44:50,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:44:50,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:44:50,555 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:44:50,555 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390906375] [2021-07-09 17:44:50,555 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390906375] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:44:50,555 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:44:50,555 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:44:50,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943113688] [2021-07-09 17:44:50,555 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:44:50,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:44:50,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:44:50,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:44:50,556 INFO L87 Difference]: Start difference. First operand 5378 states and 18906 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:44:52,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:44:52,488 INFO L93 Difference]: Finished difference Result 7954 states and 27964 transitions. [2021-07-09 17:44:52,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-07-09 17:44:52,488 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:44:52,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:44:52,505 INFO L225 Difference]: With dead ends: 7954 [2021-07-09 17:44:52,506 INFO L226 Difference]: Without dead ends: 7865 [2021-07-09 17:44:52,506 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 687 ImplicationChecksByTransitivity, 1177.5ms TimeCoverageRelationStatistics Valid=301, Invalid=2779, Unknown=0, NotChecked=0, Total=3080 [2021-07-09 17:44:52,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7865 states. [2021-07-09 17:44:52,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7865 to 5394. [2021-07-09 17:44:52,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5394 states, 5393 states have (on average 3.5141850547005378) internal successors, (18952), 5393 states have internal predecessors, (18952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:44:52,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5394 states to 5394 states and 18952 transitions. [2021-07-09 17:44:52,623 INFO L78 Accepts]: Start accepts. Automaton has 5394 states and 18952 transitions. Word has length 47 [2021-07-09 17:44:52,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:44:52,623 INFO L482 AbstractCegarLoop]: Abstraction has 5394 states and 18952 transitions. [2021-07-09 17:44:52,623 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:44:52,623 INFO L276 IsEmpty]: Start isEmpty. Operand 5394 states and 18952 transitions. [2021-07-09 17:44:52,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:44:52,634 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:44:52,634 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:44:52,634 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-07-09 17:44:52,634 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:44:52,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:44:52,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1280369660, now seen corresponding path program 11 times [2021-07-09 17:44:52,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:44:52,634 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354385739] [2021-07-09 17:44:52,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:44:52,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:44:52,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:44:52,885 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:44:52,885 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354385739] [2021-07-09 17:44:52,885 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354385739] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:44:52,885 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:44:52,885 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:44:52,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590245745] [2021-07-09 17:44:52,885 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:44:52,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:44:52,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:44:52,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:44:52,886 INFO L87 Difference]: Start difference. First operand 5394 states and 18952 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:44:54,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:44:54,980 INFO L93 Difference]: Finished difference Result 8522 states and 30214 transitions. [2021-07-09 17:44:54,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-07-09 17:44:54,980 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:44:54,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:44:55,000 INFO L225 Difference]: With dead ends: 8522 [2021-07-09 17:44:55,000 INFO L226 Difference]: Without dead ends: 8419 [2021-07-09 17:44:55,001 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 839 ImplicationChecksByTransitivity, 1218.2ms TimeCoverageRelationStatistics Valid=328, Invalid=3212, Unknown=0, NotChecked=0, Total=3540 [2021-07-09 17:44:55,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8419 states. [2021-07-09 17:44:55,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8419 to 5374. [2021-07-09 17:44:55,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5374 states, 5373 states have (on average 3.5175879396984926) internal successors, (18900), 5373 states have internal predecessors, (18900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:44:55,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5374 states to 5374 states and 18900 transitions. [2021-07-09 17:44:55,117 INFO L78 Accepts]: Start accepts. Automaton has 5374 states and 18900 transitions. Word has length 47 [2021-07-09 17:44:55,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:44:55,117 INFO L482 AbstractCegarLoop]: Abstraction has 5374 states and 18900 transitions. [2021-07-09 17:44:55,117 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:44:55,117 INFO L276 IsEmpty]: Start isEmpty. Operand 5374 states and 18900 transitions. [2021-07-09 17:44:55,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:44:55,128 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:44:55,128 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:44:55,128 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-07-09 17:44:55,128 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:44:55,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:44:55,128 INFO L82 PathProgramCache]: Analyzing trace with hash 728726234, now seen corresponding path program 12 times [2021-07-09 17:44:55,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:44:55,128 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709873039] [2021-07-09 17:44:55,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:44:55,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:44:55,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:44:55,394 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:44:55,394 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709873039] [2021-07-09 17:44:55,394 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709873039] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:44:55,394 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:44:55,394 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:44:55,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49365125] [2021-07-09 17:44:55,395 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:44:55,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:44:55,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:44:55,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:44:55,395 INFO L87 Difference]: Start difference. First operand 5374 states and 18900 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:44:56,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:44:56,561 INFO L93 Difference]: Finished difference Result 5781 states and 20210 transitions. [2021-07-09 17:44:56,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-07-09 17:44:56,562 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:44:56,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:44:56,574 INFO L225 Difference]: With dead ends: 5781 [2021-07-09 17:44:56,574 INFO L226 Difference]: Without dead ends: 5654 [2021-07-09 17:44:56,575 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 743.3ms TimeCoverageRelationStatistics Valid=183, Invalid=1797, Unknown=0, NotChecked=0, Total=1980 [2021-07-09 17:44:56,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5654 states. [2021-07-09 17:44:56,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5654 to 5386. [2021-07-09 17:44:56,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5386 states, 5385 states have (on average 3.5153203342618387) internal successors, (18930), 5385 states have internal predecessors, (18930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:44:56,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5386 states to 5386 states and 18930 transitions. [2021-07-09 17:44:56,671 INFO L78 Accepts]: Start accepts. Automaton has 5386 states and 18930 transitions. Word has length 47 [2021-07-09 17:44:56,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:44:56,671 INFO L482 AbstractCegarLoop]: Abstraction has 5386 states and 18930 transitions. [2021-07-09 17:44:56,671 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:44:56,672 INFO L276 IsEmpty]: Start isEmpty. Operand 5386 states and 18930 transitions. [2021-07-09 17:44:56,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:44:56,683 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:44:56,683 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:44:56,683 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-07-09 17:44:56,683 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:44:56,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:44:56,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1738869802, now seen corresponding path program 13 times [2021-07-09 17:44:56,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:44:56,683 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873731296] [2021-07-09 17:44:56,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:44:56,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:44:56,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:44:56,911 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:44:56,911 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873731296] [2021-07-09 17:44:56,911 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873731296] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:44:56,911 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:44:56,911 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:44:56,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095788391] [2021-07-09 17:44:56,912 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:44:56,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:44:56,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:44:56,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:44:56,912 INFO L87 Difference]: Start difference. First operand 5386 states and 18930 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) [2021-07-09 17:44:58,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:44:58,054 INFO L93 Difference]: Finished difference Result 5850 states and 20412 transitions. [2021-07-09 17:44:58,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-07-09 17:44:58,054 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 [2021-07-09 17:44:58,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:44:58,066 INFO L225 Difference]: With dead ends: 5850 [2021-07-09 17:44:58,066 INFO L226 Difference]: Without dead ends: 5753 [2021-07-09 17:44:58,067 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 721.1ms TimeCoverageRelationStatistics Valid=178, Invalid=1714, Unknown=0, NotChecked=0, Total=1892 [2021-07-09 17:44:58,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5753 states. [2021-07-09 17:44:58,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5753 to 5392. [2021-07-09 17:44:58,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5392 states, 5391 states have (on average 3.5141903171953257) internal successors, (18945), 5391 states have internal predecessors, (18945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:44:58,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5392 states to 5392 states and 18945 transitions. [2021-07-09 17:44:58,156 INFO L78 Accepts]: Start accepts. Automaton has 5392 states and 18945 transitions. Word has length 47 [2021-07-09 17:44:58,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:44:58,156 INFO L482 AbstractCegarLoop]: Abstraction has 5392 states and 18945 transitions. [2021-07-09 17:44:58,156 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) [2021-07-09 17:44:58,156 INFO L276 IsEmpty]: Start isEmpty. Operand 5392 states and 18945 transitions. [2021-07-09 17:44:58,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:44:58,165 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:44:58,165 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:44:58,165 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-07-09 17:44:58,165 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:44:58,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:44:58,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1736195976, now seen corresponding path program 14 times [2021-07-09 17:44:58,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:44:58,165 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960415886] [2021-07-09 17:44:58,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:44:58,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:44:58,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:44:58,390 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:44:58,390 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960415886] [2021-07-09 17:44:58,390 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960415886] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:44:58,390 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:44:58,390 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:44:58,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107306470] [2021-07-09 17:44:58,390 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:44:58,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:44:58,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:44:58,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:44:58,391 INFO L87 Difference]: Start difference. First operand 5392 states and 18945 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:44:59,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:44:59,592 INFO L93 Difference]: Finished difference Result 5751 states and 20107 transitions. [2021-07-09 17:44:59,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-07-09 17:44:59,593 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:44:59,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:44:59,604 INFO L225 Difference]: With dead ends: 5751 [2021-07-09 17:44:59,604 INFO L226 Difference]: Without dead ends: 5642 [2021-07-09 17:44:59,605 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 737.3ms TimeCoverageRelationStatistics Valid=184, Invalid=1796, Unknown=0, NotChecked=0, Total=1980 [2021-07-09 17:44:59,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5642 states. [2021-07-09 17:44:59,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5642 to 5374. [2021-07-09 17:44:59,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5374 states, 5373 states have (on average 3.5168434766424714) internal successors, (18896), 5373 states have internal predecessors, (18896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:44:59,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5374 states to 5374 states and 18896 transitions. [2021-07-09 17:44:59,692 INFO L78 Accepts]: Start accepts. Automaton has 5374 states and 18896 transitions. Word has length 47 [2021-07-09 17:44:59,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:44:59,692 INFO L482 AbstractCegarLoop]: Abstraction has 5374 states and 18896 transitions. [2021-07-09 17:44:59,692 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:44:59,692 INFO L276 IsEmpty]: Start isEmpty. Operand 5374 states and 18896 transitions. [2021-07-09 17:44:59,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:44:59,701 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:44:59,701 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:44:59,701 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-07-09 17:44:59,701 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:44:59,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:44:59,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1250299648, now seen corresponding path program 15 times [2021-07-09 17:44:59,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:44:59,701 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126155100] [2021-07-09 17:44:59,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:44:59,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:44:59,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:44:59,939 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:44:59,939 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126155100] [2021-07-09 17:44:59,939 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126155100] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:44:59,939 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:44:59,939 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:44:59,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502655810] [2021-07-09 17:44:59,940 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:44:59,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:44:59,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:44:59,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:44:59,940 INFO L87 Difference]: Start difference. First operand 5374 states and 18896 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:01,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:45:01,299 INFO L93 Difference]: Finished difference Result 5967 states and 20772 transitions. [2021-07-09 17:45:01,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-07-09 17:45:01,300 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:45:01,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:45:01,312 INFO L225 Difference]: With dead ends: 5967 [2021-07-09 17:45:01,312 INFO L226 Difference]: Without dead ends: 5846 [2021-07-09 17:45:01,313 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 490 ImplicationChecksByTransitivity, 875.1ms TimeCoverageRelationStatistics Valid=223, Invalid=2227, Unknown=0, NotChecked=0, Total=2450 [2021-07-09 17:45:01,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5846 states. [2021-07-09 17:45:01,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5846 to 5380. [2021-07-09 17:45:01,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5380 states, 5379 states have (on average 3.5153374233128836) internal successors, (18909), 5379 states have internal predecessors, (18909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:01,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5380 states to 5380 states and 18909 transitions. [2021-07-09 17:45:01,408 INFO L78 Accepts]: Start accepts. Automaton has 5380 states and 18909 transitions. Word has length 47 [2021-07-09 17:45:01,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:45:01,408 INFO L482 AbstractCegarLoop]: Abstraction has 5380 states and 18909 transitions. [2021-07-09 17:45:01,408 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:01,408 INFO L276 IsEmpty]: Start isEmpty. Operand 5380 states and 18909 transitions. [2021-07-09 17:45:01,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:45:01,416 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:45:01,416 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:45:01,416 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-07-09 17:45:01,416 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:45:01,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:45:01,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1473246212, now seen corresponding path program 16 times [2021-07-09 17:45:01,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:45:01,417 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664336092] [2021-07-09 17:45:01,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:45:01,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:45:01,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:45:01,645 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:45:01,645 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664336092] [2021-07-09 17:45:01,645 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664336092] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:45:01,645 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:45:01,645 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:45:01,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874693380] [2021-07-09 17:45:01,645 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:45:01,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:45:01,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:45:01,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:45:01,646 INFO L87 Difference]: Start difference. First operand 5380 states and 18909 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:03,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:45:03,436 INFO L93 Difference]: Finished difference Result 6544 states and 22781 transitions. [2021-07-09 17:45:03,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-07-09 17:45:03,440 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:45:03,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:45:03,455 INFO L225 Difference]: With dead ends: 6544 [2021-07-09 17:45:03,455 INFO L226 Difference]: Without dead ends: 6449 [2021-07-09 17:45:03,456 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 1032.8ms TimeCoverageRelationStatistics Valid=256, Invalid=2606, Unknown=0, NotChecked=0, Total=2862 [2021-07-09 17:45:03,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6449 states. [2021-07-09 17:45:03,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6449 to 5382. [2021-07-09 17:45:03,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5382 states, 5381 states have (on average 3.5149600446013753) internal successors, (18914), 5381 states have internal predecessors, (18914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:03,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5382 states to 5382 states and 18914 transitions. [2021-07-09 17:45:03,551 INFO L78 Accepts]: Start accepts. Automaton has 5382 states and 18914 transitions. Word has length 47 [2021-07-09 17:45:03,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:45:03,551 INFO L482 AbstractCegarLoop]: Abstraction has 5382 states and 18914 transitions. [2021-07-09 17:45:03,551 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:03,551 INFO L276 IsEmpty]: Start isEmpty. Operand 5382 states and 18914 transitions. [2021-07-09 17:45:03,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:45:03,560 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:45:03,560 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:45:03,560 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-07-09 17:45:03,560 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:45:03,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:45:03,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1174354534, now seen corresponding path program 17 times [2021-07-09 17:45:03,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:45:03,560 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881770233] [2021-07-09 17:45:03,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:45:03,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:45:03,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:45:03,850 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:45:03,851 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881770233] [2021-07-09 17:45:03,851 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881770233] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:45:03,851 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:45:03,851 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:45:03,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376246850] [2021-07-09 17:45:03,851 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:45:03,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:45:03,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:45:03,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:45:03,852 INFO L87 Difference]: Start difference. First operand 5382 states and 18914 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) [2021-07-09 17:45:05,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:45:05,033 INFO L93 Difference]: Finished difference Result 5846 states and 20396 transitions. [2021-07-09 17:45:05,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-07-09 17:45:05,033 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 [2021-07-09 17:45:05,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:45:05,045 INFO L225 Difference]: With dead ends: 5846 [2021-07-09 17:45:05,046 INFO L226 Difference]: Without dead ends: 5749 [2021-07-09 17:45:05,046 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 764.8ms TimeCoverageRelationStatistics Valid=183, Invalid=1709, Unknown=0, NotChecked=0, Total=1892 [2021-07-09 17:45:05,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5749 states. [2021-07-09 17:45:05,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5749 to 5388. [2021-07-09 17:45:05,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5388 states, 5387 states have (on average 3.5138295897531093) internal successors, (18929), 5387 states have internal predecessors, (18929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:05,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5388 states to 5388 states and 18929 transitions. [2021-07-09 17:45:05,143 INFO L78 Accepts]: Start accepts. Automaton has 5388 states and 18929 transitions. Word has length 47 [2021-07-09 17:45:05,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:45:05,143 INFO L482 AbstractCegarLoop]: Abstraction has 5388 states and 18929 transitions. [2021-07-09 17:45:05,143 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) [2021-07-09 17:45:05,144 INFO L276 IsEmpty]: Start isEmpty. Operand 5388 states and 18929 transitions. [2021-07-09 17:45:05,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:45:05,152 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:45:05,152 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:45:05,152 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-07-09 17:45:05,152 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:45:05,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:45:05,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1395192252, now seen corresponding path program 18 times [2021-07-09 17:45:05,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:45:05,152 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486805548] [2021-07-09 17:45:05,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:45:05,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:45:05,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:45:05,429 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:45:05,429 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486805548] [2021-07-09 17:45:05,429 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486805548] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:45:05,429 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:45:05,429 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:45:05,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329496459] [2021-07-09 17:45:05,429 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:45:05,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:45:05,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:45:05,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:45:05,430 INFO L87 Difference]: Start difference. First operand 5388 states and 18929 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:06,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:45:06,652 INFO L93 Difference]: Finished difference Result 5747 states and 20091 transitions. [2021-07-09 17:45:06,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-07-09 17:45:06,653 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:45:06,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:45:06,666 INFO L225 Difference]: With dead ends: 5747 [2021-07-09 17:45:06,666 INFO L226 Difference]: Without dead ends: 5644 [2021-07-09 17:45:06,667 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 812.5ms TimeCoverageRelationStatistics Valid=187, Invalid=1793, Unknown=0, NotChecked=0, Total=1980 [2021-07-09 17:45:06,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5644 states. [2021-07-09 17:45:06,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5644 to 5376. [2021-07-09 17:45:06,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5376 states, 5375 states have (on average 3.5164651162790697) internal successors, (18901), 5375 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) [2021-07-09 17:45:06,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5376 states to 5376 states and 18901 transitions. [2021-07-09 17:45:06,762 INFO L78 Accepts]: Start accepts. Automaton has 5376 states and 18901 transitions. Word has length 47 [2021-07-09 17:45:06,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:45:06,762 INFO L482 AbstractCegarLoop]: Abstraction has 5376 states and 18901 transitions. [2021-07-09 17:45:06,762 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:06,762 INFO L276 IsEmpty]: Start isEmpty. Operand 5376 states and 18901 transitions. [2021-07-09 17:45:06,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:45:06,771 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:45:06,771 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:45:06,771 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-07-09 17:45:06,771 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:45:06,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:45:06,771 INFO L82 PathProgramCache]: Analyzing trace with hash -829163942, now seen corresponding path program 19 times [2021-07-09 17:45:06,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:45:06,772 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152393827] [2021-07-09 17:45:06,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:45:06,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:45:07,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:45:07,080 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:45:07,080 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152393827] [2021-07-09 17:45:07,080 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152393827] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:45:07,080 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:45:07,080 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:45:07,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330737614] [2021-07-09 17:45:07,080 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:45:07,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:45:07,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:45:07,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:45:07,081 INFO L87 Difference]: Start difference. First operand 5376 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) [2021-07-09 17:45:08,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:45:08,361 INFO L93 Difference]: Finished difference Result 5823 states and 20345 transitions. [2021-07-09 17:45:08,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-09 17:45:08,361 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 [2021-07-09 17:45:08,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:45:08,373 INFO L225 Difference]: With dead ends: 5823 [2021-07-09 17:45:08,373 INFO L226 Difference]: Without dead ends: 5686 [2021-07-09 17:45:08,374 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 838.9ms TimeCoverageRelationStatistics Valid=171, Invalid=1635, Unknown=0, NotChecked=0, Total=1806 [2021-07-09 17:45:08,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5686 states. [2021-07-09 17:45:08,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5686 to 5418. [2021-07-09 17:45:08,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5418 states, 5417 states have (on average 3.5085840871330993) internal successors, (19006), 5417 states have internal predecessors, (19006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:08,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5418 states to 5418 states and 19006 transitions. [2021-07-09 17:45:08,459 INFO L78 Accepts]: Start accepts. Automaton has 5418 states and 19006 transitions. Word has length 47 [2021-07-09 17:45:08,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:45:08,459 INFO L482 AbstractCegarLoop]: Abstraction has 5418 states and 19006 transitions. [2021-07-09 17:45:08,459 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) [2021-07-09 17:45:08,459 INFO L276 IsEmpty]: Start isEmpty. Operand 5418 states and 19006 transitions. [2021-07-09 17:45:08,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:45:08,467 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:45:08,467 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:45:08,467 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-07-09 17:45:08,467 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:45:08,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:45:08,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1638104550, now seen corresponding path program 20 times [2021-07-09 17:45:08,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:45:08,468 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731995068] [2021-07-09 17:45:08,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:45:08,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:45:08,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:45:08,723 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:45:08,723 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731995068] [2021-07-09 17:45:08,723 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731995068] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:45:08,723 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:45:08,723 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:45:08,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253326095] [2021-07-09 17:45:08,723 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:45:08,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:45:08,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:45:08,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:45:08,724 INFO L87 Difference]: Start difference. First operand 5418 states and 19006 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:09,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:45:09,959 INFO L93 Difference]: Finished difference Result 5807 states and 20277 transitions. [2021-07-09 17:45:09,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-07-09 17:45:09,959 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:45:09,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:45:09,971 INFO L225 Difference]: With dead ends: 5807 [2021-07-09 17:45:09,971 INFO L226 Difference]: Without dead ends: 5662 [2021-07-09 17:45:09,972 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 803.3ms TimeCoverageRelationStatistics Valid=188, Invalid=1882, Unknown=0, NotChecked=0, Total=2070 [2021-07-09 17:45:09,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5662 states. [2021-07-09 17:45:10,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5662 to 5394. [2021-07-09 17:45:10,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5394 states, 5393 states have (on average 3.5119599480808454) internal successors, (18940), 5393 states have internal predecessors, (18940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:10,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5394 states to 5394 states and 18940 transitions. [2021-07-09 17:45:10,065 INFO L78 Accepts]: Start accepts. Automaton has 5394 states and 18940 transitions. Word has length 47 [2021-07-09 17:45:10,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:45:10,065 INFO L482 AbstractCegarLoop]: Abstraction has 5394 states and 18940 transitions. [2021-07-09 17:45:10,065 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:10,065 INFO L276 IsEmpty]: Start isEmpty. Operand 5394 states and 18940 transitions. [2021-07-09 17:45:10,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:45:10,074 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:45:10,074 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:45:10,074 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-07-09 17:45:10,074 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:45:10,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:45:10,075 INFO L82 PathProgramCache]: Analyzing trace with hash -738208772, now seen corresponding path program 21 times [2021-07-09 17:45:10,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:45:10,075 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949417279] [2021-07-09 17:45:10,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:45:10,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:45:10,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:45:10,322 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:45:10,322 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949417279] [2021-07-09 17:45:10,322 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949417279] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:45:10,322 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:45:10,322 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:45:10,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709549337] [2021-07-09 17:45:10,322 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:45:10,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:45:10,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:45:10,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:45:10,323 INFO L87 Difference]: Start difference. First operand 5394 states and 18940 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:13,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:45:13,917 INFO L93 Difference]: Finished difference Result 10437 states and 36983 transitions. [2021-07-09 17:45:13,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-07-09 17:45:13,917 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:45:13,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:45:13,939 INFO L225 Difference]: With dead ends: 10437 [2021-07-09 17:45:13,940 INFO L226 Difference]: Without dead ends: 10163 [2021-07-09 17:45:13,941 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2273 ImplicationChecksByTransitivity, 2229.5ms TimeCoverageRelationStatistics Valid=673, Invalid=6809, Unknown=0, NotChecked=0, Total=7482 [2021-07-09 17:45:13,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10163 states. [2021-07-09 17:45:14,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10163 to 6026. [2021-07-09 17:45:14,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6026 states, 6025 states have (on average 3.5100414937759337) internal successors, (21148), 6025 states have internal predecessors, (21148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:14,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6026 states to 6026 states and 21148 transitions. [2021-07-09 17:45:14,074 INFO L78 Accepts]: Start accepts. Automaton has 6026 states and 21148 transitions. Word has length 47 [2021-07-09 17:45:14,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:45:14,074 INFO L482 AbstractCegarLoop]: Abstraction has 6026 states and 21148 transitions. [2021-07-09 17:45:14,075 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:14,075 INFO L276 IsEmpty]: Start isEmpty. Operand 6026 states and 21148 transitions. [2021-07-09 17:45:14,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:45:14,084 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:45:14,085 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:45:14,085 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-07-09 17:45:14,085 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:45:14,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:45:14,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1588860680, now seen corresponding path program 22 times [2021-07-09 17:45:14,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:45:14,085 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377332807] [2021-07-09 17:45:14,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:45:14,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:45:14,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:45:14,326 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:45:14,326 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377332807] [2021-07-09 17:45:14,326 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377332807] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:45:14,326 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:45:14,326 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:45:14,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538240447] [2021-07-09 17:45:14,326 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:45:14,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:45:14,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:45:14,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:45:14,327 INFO L87 Difference]: Start difference. First operand 6026 states and 21148 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:16,354 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 20 [2021-07-09 17:45:18,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:45:18,175 INFO L93 Difference]: Finished difference Result 10391 states and 37054 transitions. [2021-07-09 17:45:18,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-07-09 17:45:18,175 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:45:18,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:45:18,198 INFO L225 Difference]: With dead ends: 10391 [2021-07-09 17:45:18,199 INFO L226 Difference]: Without dead ends: 10284 [2021-07-09 17:45:18,200 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2074 ImplicationChecksByTransitivity, 2411.2ms TimeCoverageRelationStatistics Valid=623, Invalid=6349, Unknown=0, NotChecked=0, Total=6972 [2021-07-09 17:45:18,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10284 states. [2021-07-09 17:45:18,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10284 to 5934. [2021-07-09 17:45:18,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5934 states, 5933 states have (on average 3.5155907635260406) internal successors, (20858), 5933 states have internal predecessors, (20858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:18,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5934 states to 5934 states and 20858 transitions. [2021-07-09 17:45:18,377 INFO L78 Accepts]: Start accepts. Automaton has 5934 states and 20858 transitions. Word has length 47 [2021-07-09 17:45:18,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:45:18,377 INFO L482 AbstractCegarLoop]: Abstraction has 5934 states and 20858 transitions. [2021-07-09 17:45:18,377 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:18,377 INFO L276 IsEmpty]: Start isEmpty. Operand 5934 states and 20858 transitions. [2021-07-09 17:45:18,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:45:18,387 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:45:18,387 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:45:18,387 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-07-09 17:45:18,387 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:45:18,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:45:18,387 INFO L82 PathProgramCache]: Analyzing trace with hash 91740766, now seen corresponding path program 23 times [2021-07-09 17:45:18,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:45:18,387 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015890422] [2021-07-09 17:45:18,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:45:18,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:45:18,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:45:18,618 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:45:18,618 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015890422] [2021-07-09 17:45:18,618 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015890422] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:45:18,618 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:45:18,618 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:45:18,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810592724] [2021-07-09 17:45:18,618 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:45:18,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:45:18,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:45:18,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:45:18,619 INFO L87 Difference]: Start difference. First operand 5934 states and 20858 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:19,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:45:19,959 INFO L93 Difference]: Finished difference Result 6577 states and 22905 transitions. [2021-07-09 17:45:19,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-07-09 17:45:19,960 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:45:19,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:45:19,973 INFO L225 Difference]: With dead ends: 6577 [2021-07-09 17:45:19,973 INFO L226 Difference]: Without dead ends: 6456 [2021-07-09 17:45:19,974 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 861.9ms TimeCoverageRelationStatistics Valid=220, Invalid=2230, Unknown=0, NotChecked=0, Total=2450 [2021-07-09 17:45:19,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6456 states. [2021-07-09 17:45:20,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6456 to 5940. [2021-07-09 17:45:20,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5940 states, 5939 states have (on average 3.514227984509177) internal successors, (20871), 5939 states have internal predecessors, (20871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:20,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5940 states to 5940 states and 20871 transitions. [2021-07-09 17:45:20,082 INFO L78 Accepts]: Start accepts. Automaton has 5940 states and 20871 transitions. Word has length 47 [2021-07-09 17:45:20,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:45:20,082 INFO L482 AbstractCegarLoop]: Abstraction has 5940 states and 20871 transitions. [2021-07-09 17:45:20,082 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:20,082 INFO L276 IsEmpty]: Start isEmpty. Operand 5940 states and 20871 transitions. [2021-07-09 17:45:20,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:45:20,091 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:45:20,091 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:45:20,092 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-07-09 17:45:20,092 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:45:20,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:45:20,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1663162202, now seen corresponding path program 24 times [2021-07-09 17:45:20,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:45:20,092 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288307934] [2021-07-09 17:45:20,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:45:20,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:45:20,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:45:20,311 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:45:20,312 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288307934] [2021-07-09 17:45:20,312 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288307934] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:45:20,312 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:45:20,312 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:45:20,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889383934] [2021-07-09 17:45:20,312 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:45:20,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:45:20,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:45:20,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:45:20,313 INFO L87 Difference]: Start difference. First operand 5940 states and 20871 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:22,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:45:22,021 INFO L93 Difference]: Finished difference Result 7065 states and 24685 transitions. [2021-07-09 17:45:22,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-07-09 17:45:22,021 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:45:22,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:45:22,035 INFO L225 Difference]: With dead ends: 7065 [2021-07-09 17:45:22,036 INFO L226 Difference]: Without dead ends: 6821 [2021-07-09 17:45:22,036 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 1033.7ms TimeCoverageRelationStatistics Valid=252, Invalid=2610, Unknown=0, NotChecked=0, Total=2862 [2021-07-09 17:45:22,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6821 states. [2021-07-09 17:45:22,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6821 to 5936. [2021-07-09 17:45:22,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5936 states, 5935 states have (on average 3.5149115417017693) internal successors, (20861), 5935 states have internal predecessors, (20861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:22,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5936 states to 5936 states and 20861 transitions. [2021-07-09 17:45:22,133 INFO L78 Accepts]: Start accepts. Automaton has 5936 states and 20861 transitions. Word has length 47 [2021-07-09 17:45:22,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:45:22,133 INFO L482 AbstractCegarLoop]: Abstraction has 5936 states and 20861 transitions. [2021-07-09 17:45:22,133 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:22,133 INFO L276 IsEmpty]: Start isEmpty. Operand 5936 states and 20861 transitions. [2021-07-09 17:45:22,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:45:22,141 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:45:22,141 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:45:22,142 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-07-09 17:45:22,142 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:45:22,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:45:22,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1962053880, now seen corresponding path program 25 times [2021-07-09 17:45:22,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:45:22,142 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873706787] [2021-07-09 17:45:22,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:45:22,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:45:22,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:45:22,392 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:45:22,392 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873706787] [2021-07-09 17:45:22,392 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873706787] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:45:22,392 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:45:22,392 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:45:22,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447370113] [2021-07-09 17:45:22,393 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:45:22,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:45:22,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:45:22,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:45:22,393 INFO L87 Difference]: Start difference. First operand 5936 states and 20861 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) [2021-07-09 17:45:23,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:45:23,596 INFO L93 Difference]: Finished difference Result 6458 states and 22526 transitions. [2021-07-09 17:45:23,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-07-09 17:45:23,596 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 [2021-07-09 17:45:23,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:45:23,610 INFO L225 Difference]: With dead ends: 6458 [2021-07-09 17:45:23,611 INFO L226 Difference]: Without dead ends: 6361 [2021-07-09 17:45:23,611 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 765.4ms TimeCoverageRelationStatistics Valid=183, Invalid=1797, Unknown=0, NotChecked=0, Total=1980 [2021-07-09 17:45:23,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6361 states. [2021-07-09 17:45:23,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6361 to 5950. [2021-07-09 17:45:23,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5950 states, 5949 states have (on average 3.5111783493024036) internal successors, (20888), 5949 states have internal predecessors, (20888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:23,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5950 states to 5950 states and 20888 transitions. [2021-07-09 17:45:23,714 INFO L78 Accepts]: Start accepts. Automaton has 5950 states and 20888 transitions. Word has length 47 [2021-07-09 17:45:23,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:45:23,714 INFO L482 AbstractCegarLoop]: Abstraction has 5950 states and 20888 transitions. [2021-07-09 17:45:23,714 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) [2021-07-09 17:45:23,714 INFO L276 IsEmpty]: Start isEmpty. Operand 5950 states and 20888 transitions. [2021-07-09 17:45:23,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:45:23,723 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:45:23,723 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:45:23,723 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-07-09 17:45:23,723 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:45:23,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:45:23,723 INFO L82 PathProgramCache]: Analyzing trace with hash 236633370, now seen corresponding path program 26 times [2021-07-09 17:45:23,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:45:23,723 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380900869] [2021-07-09 17:45:23,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:45:23,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:45:24,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:45:24,044 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:45:24,044 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380900869] [2021-07-09 17:45:24,044 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380900869] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:45:24,044 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:45:24,044 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:45:24,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148069449] [2021-07-09 17:45:24,045 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:45:24,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:45:24,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:45:24,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:45:24,045 INFO L87 Difference]: Start difference. First operand 5950 states and 20888 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:25,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:45:25,263 INFO L93 Difference]: Finished difference Result 6359 states and 22221 transitions. [2021-07-09 17:45:25,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-07-09 17:45:25,263 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:45:25,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:45:25,277 INFO L225 Difference]: With dead ends: 6359 [2021-07-09 17:45:25,277 INFO L226 Difference]: Without dead ends: 6242 [2021-07-09 17:45:25,277 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 838.1ms TimeCoverageRelationStatistics Valid=186, Invalid=1884, Unknown=0, NotChecked=0, Total=2070 [2021-07-09 17:45:25,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6242 states. [2021-07-09 17:45:25,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6242 to 5924. [2021-07-09 17:45:25,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5924 states, 5923 states have (on average 3.515617085936181) internal successors, (20823), 5923 states have internal predecessors, (20823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:25,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5924 states to 5924 states and 20823 transitions. [2021-07-09 17:45:25,369 INFO L78 Accepts]: Start accepts. Automaton has 5924 states and 20823 transitions. Word has length 47 [2021-07-09 17:45:25,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:45:25,370 INFO L482 AbstractCegarLoop]: Abstraction has 5924 states and 20823 transitions. [2021-07-09 17:45:25,370 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:25,370 INFO L276 IsEmpty]: Start isEmpty. Operand 5924 states and 20823 transitions. [2021-07-09 17:45:25,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:45:25,379 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:45:25,379 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:45:25,379 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-07-09 17:45:25,379 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:45:25,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:45:25,379 INFO L82 PathProgramCache]: Analyzing trace with hash -234197158, now seen corresponding path program 27 times [2021-07-09 17:45:25,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:45:25,379 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796931720] [2021-07-09 17:45:25,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:45:25,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:45:25,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:45:25,626 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:45:25,626 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796931720] [2021-07-09 17:45:25,627 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796931720] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:45:25,627 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:45:25,627 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:45:25,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571424422] [2021-07-09 17:45:25,627 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:45:25,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:45:25,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:45:25,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:45:25,627 INFO L87 Difference]: Start difference. First operand 5924 states and 20823 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:26,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:45:26,849 INFO L93 Difference]: Finished difference Result 6593 states and 23082 transitions. [2021-07-09 17:45:26,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-07-09 17:45:26,849 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:45:26,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:45:26,862 INFO L225 Difference]: With dead ends: 6593 [2021-07-09 17:45:26,863 INFO L226 Difference]: Without dead ends: 6466 [2021-07-09 17:45:26,863 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 833.1ms TimeCoverageRelationStatistics Valid=210, Invalid=2046, Unknown=0, NotChecked=0, Total=2256 [2021-07-09 17:45:26,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6466 states. [2021-07-09 17:45:26,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6466 to 5944. [2021-07-09 17:45:26,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5944 states, 5943 states have (on average 3.513545347467609) internal successors, (20881), 5943 states have internal predecessors, (20881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:26,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5944 states to 5944 states and 20881 transitions. [2021-07-09 17:45:26,955 INFO L78 Accepts]: Start accepts. Automaton has 5944 states and 20881 transitions. Word has length 47 [2021-07-09 17:45:26,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:45:26,955 INFO L482 AbstractCegarLoop]: Abstraction has 5944 states and 20881 transitions. [2021-07-09 17:45:26,955 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:26,955 INFO L276 IsEmpty]: Start isEmpty. Operand 5944 states and 20881 transitions. [2021-07-09 17:45:26,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:45:26,964 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:45:26,964 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:45:26,964 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-07-09 17:45:26,964 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:45:26,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:45:26,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1584945762, now seen corresponding path program 28 times [2021-07-09 17:45:26,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:45:26,965 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785182783] [2021-07-09 17:45:26,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:45:26,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:45:27,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:45:27,194 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:45:27,194 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785182783] [2021-07-09 17:45:27,194 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785182783] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:45:27,194 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:45:27,195 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:45:27,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236813193] [2021-07-09 17:45:27,195 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:45:27,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:45:27,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:45:27,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:45:27,195 INFO L87 Difference]: Start difference. First operand 5944 states and 20881 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:29,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:45:29,192 INFO L93 Difference]: Finished difference Result 9238 states and 32604 transitions. [2021-07-09 17:45:29,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-07-09 17:45:29,193 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:45:29,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:45:29,213 INFO L225 Difference]: With dead ends: 9238 [2021-07-09 17:45:29,213 INFO L226 Difference]: Without dead ends: 9149 [2021-07-09 17:45:29,214 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 1177.3ms TimeCoverageRelationStatistics Valid=327, Invalid=3213, Unknown=0, NotChecked=0, Total=3540 [2021-07-09 17:45:29,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9149 states. [2021-07-09 17:45:29,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9149 to 5968. [2021-07-09 17:45:29,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5968 states, 5967 states have (on average 3.5118149824032177) internal successors, (20955), 5967 states have internal predecessors, (20955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:29,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5968 states to 5968 states and 20955 transitions. [2021-07-09 17:45:29,363 INFO L78 Accepts]: Start accepts. Automaton has 5968 states and 20955 transitions. Word has length 47 [2021-07-09 17:45:29,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:45:29,363 INFO L482 AbstractCegarLoop]: Abstraction has 5968 states and 20955 transitions. [2021-07-09 17:45:29,363 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:29,363 INFO L276 IsEmpty]: Start isEmpty. Operand 5968 states and 20955 transitions. [2021-07-09 17:45:29,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:45:29,372 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:45:29,372 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:45:29,372 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-07-09 17:45:29,372 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:45:29,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:45:29,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1859369626, now seen corresponding path program 29 times [2021-07-09 17:45:29,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:45:29,372 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243181022] [2021-07-09 17:45:29,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:45:29,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:45:29,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:45:29,611 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:45:29,612 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243181022] [2021-07-09 17:45:29,612 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243181022] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:45:29,612 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:45:29,612 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:45:29,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970041250] [2021-07-09 17:45:29,612 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:45:29,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:45:29,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:45:29,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:45:29,612 INFO L87 Difference]: Start difference. First operand 5968 states and 20955 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:31,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:45:31,744 INFO L93 Difference]: Finished difference Result 9722 states and 34560 transitions. [2021-07-09 17:45:31,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-07-09 17:45:31,745 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:45:31,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:45:31,767 INFO L225 Difference]: With dead ends: 9722 [2021-07-09 17:45:31,767 INFO L226 Difference]: Without dead ends: 9619 [2021-07-09 17:45:31,768 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 919 ImplicationChecksByTransitivity, 1193.8ms TimeCoverageRelationStatistics Valid=332, Invalid=3450, Unknown=0, NotChecked=0, Total=3782 [2021-07-09 17:45:31,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9619 states. [2021-07-09 17:45:31,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9619 to 5948. [2021-07-09 17:45:31,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5948 states, 5947 states have (on average 3.5148814528333614) internal successors, (20903), 5947 states have internal predecessors, (20903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:31,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5948 states to 5948 states and 20903 transitions. [2021-07-09 17:45:31,887 INFO L78 Accepts]: Start accepts. Automaton has 5948 states and 20903 transitions. Word has length 47 [2021-07-09 17:45:31,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:45:31,887 INFO L482 AbstractCegarLoop]: Abstraction has 5948 states and 20903 transitions. [2021-07-09 17:45:31,887 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:31,887 INFO L276 IsEmpty]: Start isEmpty. Operand 5948 states and 20903 transitions. [2021-07-09 17:45:31,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:45:31,896 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:45:31,896 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:45:31,896 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-07-09 17:45:31,896 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:45:31,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:45:31,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1307726200, now seen corresponding path program 30 times [2021-07-09 17:45:31,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:45:31,896 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872508711] [2021-07-09 17:45:31,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:45:31,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:45:32,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:45:32,170 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:45:32,170 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872508711] [2021-07-09 17:45:32,170 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872508711] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:45:32,170 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:45:32,170 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:45:32,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963873197] [2021-07-09 17:45:32,170 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:45:32,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:45:32,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:45:32,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:45:32,171 INFO L87 Difference]: Start difference. First operand 5948 states and 20903 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:33,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:45:33,348 INFO L93 Difference]: Finished difference Result 6447 states and 22511 transitions. [2021-07-09 17:45:33,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-07-09 17:45:33,349 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:45:33,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:45:33,363 INFO L225 Difference]: With dead ends: 6447 [2021-07-09 17:45:33,363 INFO L226 Difference]: Without dead ends: 6320 [2021-07-09 17:45:33,364 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 787.9ms TimeCoverageRelationStatistics Valid=197, Invalid=1965, Unknown=0, NotChecked=0, Total=2162 [2021-07-09 17:45:33,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6320 states. [2021-07-09 17:45:33,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6320 to 5960. [2021-07-09 17:45:33,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5960 states, 5959 states have (on average 3.512837724450411) internal successors, (20933), 5959 states have internal predecessors, (20933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:33,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5960 states to 5960 states and 20933 transitions. [2021-07-09 17:45:33,472 INFO L78 Accepts]: Start accepts. Automaton has 5960 states and 20933 transitions. Word has length 47 [2021-07-09 17:45:33,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:45:33,472 INFO L482 AbstractCegarLoop]: Abstraction has 5960 states and 20933 transitions. [2021-07-09 17:45:33,472 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:33,472 INFO L276 IsEmpty]: Start isEmpty. Operand 5960 states and 20933 transitions. [2021-07-09 17:45:33,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:45:33,482 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:45:33,482 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:45:33,482 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-07-09 17:45:33,482 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:45:33,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:45:33,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1159869836, now seen corresponding path program 31 times [2021-07-09 17:45:33,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:45:33,482 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249757361] [2021-07-09 17:45:33,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:45:33,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:45:33,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:45:33,718 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:45:33,718 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249757361] [2021-07-09 17:45:33,718 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249757361] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:45:33,718 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:45:33,718 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:45:33,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901317835] [2021-07-09 17:45:33,719 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:45:33,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:45:33,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:45:33,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:45:33,719 INFO L87 Difference]: Start difference. First operand 5960 states and 20933 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:35,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:45:35,077 INFO L93 Difference]: Finished difference Result 6520 states and 22721 transitions. [2021-07-09 17:45:35,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-07-09 17:45:35,077 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:45:35,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:45:35,090 INFO L225 Difference]: With dead ends: 6520 [2021-07-09 17:45:35,090 INFO L226 Difference]: Without dead ends: 6423 [2021-07-09 17:45:35,090 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 877.6ms TimeCoverageRelationStatistics Valid=226, Invalid=2324, Unknown=0, NotChecked=0, Total=2550 [2021-07-09 17:45:35,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6423 states. [2021-07-09 17:45:35,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6423 to 5966. [2021-07-09 17:45:35,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5966 states, 5965 states have (on average 3.511818943839061) internal successors, (20948), 5965 states have internal predecessors, (20948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:35,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5966 states to 5966 states and 20948 transitions. [2021-07-09 17:45:35,180 INFO L78 Accepts]: Start accepts. Automaton has 5966 states and 20948 transitions. Word has length 47 [2021-07-09 17:45:35,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:45:35,181 INFO L482 AbstractCegarLoop]: Abstraction has 5966 states and 20948 transitions. [2021-07-09 17:45:35,181 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:35,181 INFO L276 IsEmpty]: Start isEmpty. Operand 5966 states and 20948 transitions. [2021-07-09 17:45:35,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:45:35,189 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:45:35,189 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:45:35,190 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-07-09 17:45:35,190 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:45:35,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:45:35,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1157196010, now seen corresponding path program 32 times [2021-07-09 17:45:35,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:45:35,190 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921770866] [2021-07-09 17:45:35,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:45:35,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:45:35,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:45:35,422 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:45:35,422 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921770866] [2021-07-09 17:45:35,422 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921770866] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:45:35,422 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:45:35,422 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:45:35,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362253012] [2021-07-09 17:45:35,422 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:45:35,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:45:35,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:45:35,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:45:35,423 INFO L87 Difference]: Start difference. First operand 5966 states and 20948 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:36,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:45:36,580 INFO L93 Difference]: Finished difference Result 6417 states and 22408 transitions. [2021-07-09 17:45:36,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-07-09 17:45:36,580 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:45:36,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:45:36,594 INFO L225 Difference]: With dead ends: 6417 [2021-07-09 17:45:36,594 INFO L226 Difference]: Without dead ends: 6308 [2021-07-09 17:45:36,595 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 761.8ms TimeCoverageRelationStatistics Valid=207, Invalid=2049, Unknown=0, NotChecked=0, Total=2256 [2021-07-09 17:45:36,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6308 states. [2021-07-09 17:45:36,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6308 to 5948. [2021-07-09 17:45:36,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5948 states, 5947 states have (on average 3.514208844795695) internal successors, (20899), 5947 states have internal predecessors, (20899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:36,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5948 states to 5948 states and 20899 transitions. [2021-07-09 17:45:36,693 INFO L78 Accepts]: Start accepts. Automaton has 5948 states and 20899 transitions. Word has length 47 [2021-07-09 17:45:36,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:45:36,693 INFO L482 AbstractCegarLoop]: Abstraction has 5948 states and 20899 transitions. [2021-07-09 17:45:36,693 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:36,693 INFO L276 IsEmpty]: Start isEmpty. Operand 5948 states and 20899 transitions. [2021-07-09 17:45:36,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:45:36,702 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:45:36,702 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:45:36,702 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-07-09 17:45:36,703 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:45:36,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:45:36,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1829299614, now seen corresponding path program 33 times [2021-07-09 17:45:36,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:45:36,703 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049092261] [2021-07-09 17:45:36,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:45:36,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:45:36,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:45:36,942 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:45:36,942 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049092261] [2021-07-09 17:45:36,942 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049092261] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:45:36,942 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:45:36,942 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:45:36,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37910117] [2021-07-09 17:45:36,942 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:45:36,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:45:36,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:45:36,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:45:36,943 INFO L87 Difference]: Start difference. First operand 5948 states and 20899 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:38,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:45:38,362 INFO L93 Difference]: Finished difference Result 6609 states and 22999 transitions. [2021-07-09 17:45:38,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-07-09 17:45:38,363 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:45:38,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:45:38,376 INFO L225 Difference]: With dead ends: 6609 [2021-07-09 17:45:38,377 INFO L226 Difference]: Without dead ends: 6488 [2021-07-09 17:45:38,377 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 591 ImplicationChecksByTransitivity, 930.2ms TimeCoverageRelationStatistics Valid=242, Invalid=2514, Unknown=0, NotChecked=0, Total=2756 [2021-07-09 17:45:38,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6488 states. [2021-07-09 17:45:38,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6488 to 5954. [2021-07-09 17:45:38,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5954 states, 5953 states have (on average 3.5128506635309926) internal successors, (20912), 5953 states have internal predecessors, (20912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:38,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5954 states to 5954 states and 20912 transitions. [2021-07-09 17:45:38,471 INFO L78 Accepts]: Start accepts. Automaton has 5954 states and 20912 transitions. Word has length 47 [2021-07-09 17:45:38,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:45:38,471 INFO L482 AbstractCegarLoop]: Abstraction has 5954 states and 20912 transitions. [2021-07-09 17:45:38,471 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:38,471 INFO L276 IsEmpty]: Start isEmpty. Operand 5954 states and 20912 transitions. [2021-07-09 17:45:38,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:45:38,480 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:45:38,480 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:45:38,480 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-07-09 17:45:38,480 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:45:38,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:45:38,481 INFO L82 PathProgramCache]: Analyzing trace with hash -894246246, now seen corresponding path program 34 times [2021-07-09 17:45:38,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:45:38,481 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692227920] [2021-07-09 17:45:38,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:45:38,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:45:38,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:45:38,708 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:45:38,708 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692227920] [2021-07-09 17:45:38,708 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692227920] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:45:38,708 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:45:38,708 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:45:38,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392045685] [2021-07-09 17:45:38,709 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:45:38,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:45:38,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:45:38,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:45:38,709 INFO L87 Difference]: Start difference. First operand 5954 states and 20912 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:40,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:45:40,583 INFO L93 Difference]: Finished difference Result 7878 states and 27548 transitions. [2021-07-09 17:45:40,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-07-09 17:45:40,584 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:45:40,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:45:40,600 INFO L225 Difference]: With dead ends: 7878 [2021-07-09 17:45:40,600 INFO L226 Difference]: Without dead ends: 7783 [2021-07-09 17:45:40,601 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 795 ImplicationChecksByTransitivity, 1045.7ms TimeCoverageRelationStatistics Valid=293, Invalid=3129, Unknown=0, NotChecked=0, Total=3422 [2021-07-09 17:45:40,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7783 states. [2021-07-09 17:45:40,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7783 to 5944. [2021-07-09 17:45:40,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5944 states, 5943 states have (on average 3.5142184082113412) internal successors, (20885), 5943 states have internal predecessors, (20885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:40,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5944 states to 5944 states and 20885 transitions. [2021-07-09 17:45:40,702 INFO L78 Accepts]: Start accepts. Automaton has 5944 states and 20885 transitions. Word has length 47 [2021-07-09 17:45:40,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:45:40,702 INFO L482 AbstractCegarLoop]: Abstraction has 5944 states and 20885 transitions. [2021-07-09 17:45:40,702 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:40,702 INFO L276 IsEmpty]: Start isEmpty. Operand 5944 states and 20885 transitions. [2021-07-09 17:45:40,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:45:40,711 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:45:40,711 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:45:40,711 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-07-09 17:45:40,711 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:45:40,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:45:40,711 INFO L82 PathProgramCache]: Analyzing trace with hash -595354568, now seen corresponding path program 35 times [2021-07-09 17:45:40,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:45:40,711 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99720066] [2021-07-09 17:45:40,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:45:40,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:45:40,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:45:40,958 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:45:40,958 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99720066] [2021-07-09 17:45:40,958 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99720066] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:45:40,958 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:45:40,958 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:45:40,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306476003] [2021-07-09 17:45:40,958 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:45:40,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:45:40,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:45:40,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:45:40,959 INFO L87 Difference]: Start difference. First operand 5944 states and 20885 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:42,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:45:42,345 INFO L93 Difference]: Finished difference Result 6605 states and 22975 transitions. [2021-07-09 17:45:42,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-07-09 17:45:42,345 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:45:42,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:45:42,359 INFO L225 Difference]: With dead ends: 6605 [2021-07-09 17:45:42,359 INFO L226 Difference]: Without dead ends: 6508 [2021-07-09 17:45:42,359 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 942.7ms TimeCoverageRelationStatistics Valid=241, Invalid=2411, Unknown=0, NotChecked=0, Total=2652 [2021-07-09 17:45:42,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6508 states. [2021-07-09 17:45:42,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6508 to 5952. [2021-07-09 17:45:42,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5952 states, 5951 states have (on average 3.5125189043858174) internal successors, (20903), 5951 states have internal predecessors, (20903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:42,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5952 states to 5952 states and 20903 transitions. [2021-07-09 17:45:42,463 INFO L78 Accepts]: Start accepts. Automaton has 5952 states and 20903 transitions. Word has length 47 [2021-07-09 17:45:42,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:45:42,463 INFO L482 AbstractCegarLoop]: Abstraction has 5952 states and 20903 transitions. [2021-07-09 17:45:42,463 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:42,463 INFO L276 IsEmpty]: Start isEmpty. Operand 5952 states and 20903 transitions. [2021-07-09 17:45:42,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:45:42,471 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:45:42,471 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:45:42,472 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-07-09 17:45:42,472 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:45:42,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:45:42,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1974192218, now seen corresponding path program 36 times [2021-07-09 17:45:42,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:45:42,472 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036938288] [2021-07-09 17:45:42,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:45:42,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:45:42,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:45:42,695 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:45:42,695 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036938288] [2021-07-09 17:45:42,695 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036938288] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:45:42,695 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:45:42,695 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:45:42,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763469991] [2021-07-09 17:45:42,696 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:45:42,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:45:42,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:45:42,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:45:42,696 INFO L87 Difference]: Start difference. First operand 5952 states and 20903 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:43,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:45:43,908 INFO L93 Difference]: Finished difference Result 6502 states and 22662 transitions. [2021-07-09 17:45:43,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-07-09 17:45:43,908 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:45:43,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:45:43,922 INFO L225 Difference]: With dead ends: 6502 [2021-07-09 17:45:43,922 INFO L226 Difference]: Without dead ends: 6399 [2021-07-09 17:45:43,922 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 789.6ms TimeCoverageRelationStatistics Valid=219, Invalid=2133, Unknown=0, NotChecked=0, Total=2352 [2021-07-09 17:45:43,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6399 states. [2021-07-09 17:45:44,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6399 to 5940. [2021-07-09 17:45:44,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5940 states, 5939 states have (on average 3.5149014985687828) internal successors, (20875), 5939 states have internal predecessors, (20875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:44,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5940 states to 5940 states and 20875 transitions. [2021-07-09 17:45:44,024 INFO L78 Accepts]: Start accepts. Automaton has 5940 states and 20875 transitions. Word has length 47 [2021-07-09 17:45:44,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:45:44,024 INFO L482 AbstractCegarLoop]: Abstraction has 5940 states and 20875 transitions. [2021-07-09 17:45:44,024 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:44,024 INFO L276 IsEmpty]: Start isEmpty. Operand 5940 states and 20875 transitions. [2021-07-09 17:45:44,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:45:44,033 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:45:44,033 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:45:44,033 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-07-09 17:45:44,034 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:45:44,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:45:44,034 INFO L82 PathProgramCache]: Analyzing trace with hash 392123308, now seen corresponding path program 37 times [2021-07-09 17:45:44,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:45:44,034 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184034000] [2021-07-09 17:45:44,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:45:44,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:45:44,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:45:44,268 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:45:44,268 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184034000] [2021-07-09 17:45:44,268 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184034000] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:45:44,268 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:45:44,268 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:45:44,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435412979] [2021-07-09 17:45:44,268 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:45:44,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:45:44,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:45:44,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:45:44,269 INFO L87 Difference]: Start difference. First operand 5940 states and 20875 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:45,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:45:45,352 INFO L93 Difference]: Finished difference Result 6361 states and 22242 transitions. [2021-07-09 17:45:45,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-09 17:45:45,353 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:45:45,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:45:45,366 INFO L225 Difference]: With dead ends: 6361 [2021-07-09 17:45:45,366 INFO L226 Difference]: Without dead ends: 6234 [2021-07-09 17:45:45,366 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 676.5ms TimeCoverageRelationStatistics Valid=175, Invalid=1717, Unknown=0, NotChecked=0, Total=1892 [2021-07-09 17:45:45,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6234 states. [2021-07-09 17:45:45,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6234 to 5976. [2021-07-09 17:45:45,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5976 states, 5975 states have (on average 3.5128033472803346) internal successors, (20989), 5975 states have internal predecessors, (20989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:45,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5976 states to 5976 states and 20989 transitions. [2021-07-09 17:45:45,465 INFO L78 Accepts]: Start accepts. Automaton has 5976 states and 20989 transitions. Word has length 47 [2021-07-09 17:45:45,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:45:45,465 INFO L482 AbstractCegarLoop]: Abstraction has 5976 states and 20989 transitions. [2021-07-09 17:45:45,465 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:45,465 INFO L276 IsEmpty]: Start isEmpty. Operand 5976 states and 20989 transitions. [2021-07-09 17:45:45,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:45:45,474 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:45:45,474 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:45:45,474 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-07-09 17:45:45,475 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:45:45,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:45:45,475 INFO L82 PathProgramCache]: Analyzing trace with hash -2075472728, now seen corresponding path program 38 times [2021-07-09 17:45:45,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:45:45,475 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850324458] [2021-07-09 17:45:45,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:45:45,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:45:45,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:45:45,746 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:45:45,746 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850324458] [2021-07-09 17:45:45,746 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850324458] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:45:45,746 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:45:45,746 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:45:45,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720617746] [2021-07-09 17:45:45,746 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:45:45,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:45:45,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:45:45,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:45:45,747 INFO L87 Difference]: Start difference. First operand 5976 states and 20989 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:46,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:45:46,976 INFO L93 Difference]: Finished difference Result 6440 states and 22471 transitions. [2021-07-09 17:45:46,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-07-09 17:45:46,977 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:45:46,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:45:46,990 INFO L225 Difference]: With dead ends: 6440 [2021-07-09 17:45:46,990 INFO L226 Difference]: Without dead ends: 6343 [2021-07-09 17:45:46,991 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 806.1ms TimeCoverageRelationStatistics Valid=193, Invalid=1969, Unknown=0, NotChecked=0, Total=2162 [2021-07-09 17:45:47,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6343 states. [2021-07-09 17:45:47,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6343 to 5982. [2021-07-09 17:45:47,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5982 states, 5981 states have (on average 3.5117873265340243) internal successors, (21004), 5981 states have internal predecessors, (21004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:47,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5982 states to 5982 states and 21004 transitions. [2021-07-09 17:45:47,088 INFO L78 Accepts]: Start accepts. Automaton has 5982 states and 21004 transitions. Word has length 47 [2021-07-09 17:45:47,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:45:47,088 INFO L482 AbstractCegarLoop]: Abstraction has 5982 states and 21004 transitions. [2021-07-09 17:45:47,088 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:47,088 INFO L276 IsEmpty]: Start isEmpty. Operand 5982 states and 21004 transitions. [2021-07-09 17:45:47,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:45:47,097 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:45:47,097 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:45:47,097 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-07-09 17:45:47,097 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:45:47,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:45:47,097 INFO L82 PathProgramCache]: Analyzing trace with hash -2072798902, now seen corresponding path program 39 times [2021-07-09 17:45:47,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:45:47,097 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574652482] [2021-07-09 17:45:47,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:45:47,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:45:47,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:45:47,337 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:45:47,337 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574652482] [2021-07-09 17:45:47,337 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574652482] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:45:47,337 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:45:47,337 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:45:47,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508819615] [2021-07-09 17:45:47,337 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:45:47,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:45:47,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:45:47,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:45:47,338 INFO L87 Difference]: Start difference. First operand 5982 states and 21004 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:48,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:45:48,496 INFO L93 Difference]: Finished difference Result 6331 states and 22139 transitions. [2021-07-09 17:45:48,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-07-09 17:45:48,497 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:45:48,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:45:48,510 INFO L225 Difference]: With dead ends: 6331 [2021-07-09 17:45:48,510 INFO L226 Difference]: Without dead ends: 6222 [2021-07-09 17:45:48,510 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 751.3ms TimeCoverageRelationStatistics Valid=179, Invalid=1713, Unknown=0, NotChecked=0, Total=1892 [2021-07-09 17:45:48,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6222 states. [2021-07-09 17:45:48,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6222 to 5964. [2021-07-09 17:45:48,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5964 states, 5963 states have (on average 3.512829112862653) internal successors, (20947), 5963 states have internal predecessors, (20947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:48,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5964 states to 5964 states and 20947 transitions. [2021-07-09 17:45:48,607 INFO L78 Accepts]: Start accepts. Automaton has 5964 states and 20947 transitions. Word has length 47 [2021-07-09 17:45:48,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:45:48,607 INFO L482 AbstractCegarLoop]: Abstraction has 5964 states and 20947 transitions. [2021-07-09 17:45:48,607 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:48,607 INFO L276 IsEmpty]: Start isEmpty. Operand 5964 states and 20947 transitions. [2021-07-09 17:45:48,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:45:48,616 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:45:48,616 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:45:48,616 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-07-09 17:45:48,616 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:45:48,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:45:48,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1973112992, now seen corresponding path program 40 times [2021-07-09 17:45:48,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:45:48,616 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796029179] [2021-07-09 17:45:48,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:45:48,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:45:48,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:45:48,828 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:45:48,828 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796029179] [2021-07-09 17:45:48,828 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796029179] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:45:48,828 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:45:48,828 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:45:48,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734022195] [2021-07-09 17:45:48,828 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:45:48,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:45:48,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:45:48,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:45:48,829 INFO L87 Difference]: Start difference. First operand 5964 states and 20947 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) [2021-07-09 17:45:49,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:45:49,970 INFO L93 Difference]: Finished difference Result 6401 states and 22402 transitions. [2021-07-09 17:45:49,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-07-09 17:45:49,970 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 [2021-07-09 17:45:49,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:45:49,983 INFO L225 Difference]: With dead ends: 6401 [2021-07-09 17:45:49,984 INFO L226 Difference]: Without dead ends: 6256 [2021-07-09 17:45:49,984 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 710.6ms TimeCoverageRelationStatistics Valid=187, Invalid=1793, Unknown=0, NotChecked=0, Total=1980 [2021-07-09 17:45:50,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6256 states. [2021-07-09 17:45:50,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6256 to 5976. [2021-07-09 17:45:50,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5976 states, 5975 states have (on average 3.510794979079498) internal successors, (20977), 5975 states have internal predecessors, (20977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:50,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5976 states to 5976 states and 20977 transitions. [2021-07-09 17:45:50,082 INFO L78 Accepts]: Start accepts. Automaton has 5976 states and 20977 transitions. Word has length 47 [2021-07-09 17:45:50,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:45:50,082 INFO L482 AbstractCegarLoop]: Abstraction has 5976 states and 20977 transitions. [2021-07-09 17:45:50,082 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) [2021-07-09 17:45:50,082 INFO L276 IsEmpty]: Start isEmpty. Operand 5976 states and 20977 transitions. [2021-07-09 17:45:50,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:45:50,092 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:45:50,092 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:45:50,092 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-07-09 17:45:50,092 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:45:50,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:45:50,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1255583042, now seen corresponding path program 41 times [2021-07-09 17:45:50,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:45:50,093 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75696889] [2021-07-09 17:45:50,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:45:50,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:45:50,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:45:50,321 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:45:50,321 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75696889] [2021-07-09 17:45:50,321 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75696889] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:45:50,321 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:45:50,321 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:45:50,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244895767] [2021-07-09 17:45:50,321 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:45:50,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:45:50,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:45:50,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:45:50,322 INFO L87 Difference]: Start difference. First operand 5976 states and 20977 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:51,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:45:51,625 INFO L93 Difference]: Finished difference Result 6422 states and 22406 transitions. [2021-07-09 17:45:51,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-07-09 17:45:51,625 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:45:51,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:45:51,638 INFO L225 Difference]: With dead ends: 6422 [2021-07-09 17:45:51,638 INFO L226 Difference]: Without dead ends: 6325 [2021-07-09 17:45:51,638 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 844.1ms TimeCoverageRelationStatistics Valid=197, Invalid=1965, Unknown=0, NotChecked=0, Total=2162 [2021-07-09 17:45:51,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6325 states. [2021-07-09 17:45:51,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6325 to 5982. [2021-07-09 17:45:51,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5982 states, 5981 states have (on average 3.5097809730814244) internal successors, (20992), 5981 states have internal predecessors, (20992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:51,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5982 states to 5982 states and 20992 transitions. [2021-07-09 17:45:51,734 INFO L78 Accepts]: Start accepts. Automaton has 5982 states and 20992 transitions. Word has length 47 [2021-07-09 17:45:51,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:45:51,734 INFO L482 AbstractCegarLoop]: Abstraction has 5982 states and 20992 transitions. [2021-07-09 17:45:51,734 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:51,735 INFO L276 IsEmpty]: Start isEmpty. Operand 5982 states and 20992 transitions. [2021-07-09 17:45:51,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:45:51,743 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:45:51,743 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:45:51,743 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-07-09 17:45:51,743 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:45:51,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:45:51,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1252909216, now seen corresponding path program 42 times [2021-07-09 17:45:51,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:45:51,744 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194584973] [2021-07-09 17:45:51,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:45:51,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:45:51,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:45:51,971 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:45:51,971 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194584973] [2021-07-09 17:45:51,971 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194584973] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:45:51,971 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:45:51,971 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:45:51,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628533090] [2021-07-09 17:45:51,972 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:45:51,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:45:51,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:45:51,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:45:51,972 INFO L87 Difference]: Start difference. First operand 5982 states and 20992 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:53,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:45:53,049 INFO L93 Difference]: Finished difference Result 6307 states and 22053 transitions. [2021-07-09 17:45:53,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-09 17:45:53,049 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:45:53,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:45:53,063 INFO L225 Difference]: With dead ends: 6307 [2021-07-09 17:45:53,063 INFO L226 Difference]: Without dead ends: 6174 [2021-07-09 17:45:53,064 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 687.1ms TimeCoverageRelationStatistics Valid=180, Invalid=1712, Unknown=0, NotChecked=0, Total=1892 [2021-07-09 17:45:53,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6174 states. [2021-07-09 17:45:53,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6174 to 5940. [2021-07-09 17:45:53,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5940 states, 5939 states have (on average 3.5135544704495705) internal successors, (20867), 5939 states have internal predecessors, (20867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:53,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5940 states to 5940 states and 20867 transitions. [2021-07-09 17:45:53,164 INFO L78 Accepts]: Start accepts. Automaton has 5940 states and 20867 transitions. Word has length 47 [2021-07-09 17:45:53,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:45:53,164 INFO L482 AbstractCegarLoop]: Abstraction has 5940 states and 20867 transitions. [2021-07-09 17:45:53,164 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:53,164 INFO L276 IsEmpty]: Start isEmpty. Operand 5940 states and 20867 transitions. [2021-07-09 17:45:53,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:45:53,173 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:45:53,173 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:45:53,174 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-07-09 17:45:53,174 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:45:53,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:45:53,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1007165734, now seen corresponding path program 43 times [2021-07-09 17:45:53,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:45:53,174 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365720758] [2021-07-09 17:45:53,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:45:53,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:45:53,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:45:53,413 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:45:53,413 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365720758] [2021-07-09 17:45:53,413 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365720758] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:45:53,413 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:45:53,413 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:45:53,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88636352] [2021-07-09 17:45:53,413 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:45:53,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:45:53,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:45:53,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:45:53,414 INFO L87 Difference]: Start difference. First operand 5940 states and 20867 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:54,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:45:54,659 INFO L93 Difference]: Finished difference Result 6586 states and 23006 transitions. [2021-07-09 17:45:54,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-07-09 17:45:54,659 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:45:54,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:45:54,674 INFO L225 Difference]: With dead ends: 6586 [2021-07-09 17:45:54,674 INFO L226 Difference]: Without dead ends: 6401 [2021-07-09 17:45:54,675 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 871.1ms TimeCoverageRelationStatistics Valid=238, Invalid=2414, Unknown=0, NotChecked=0, Total=2652 [2021-07-09 17:45:54,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6401 states. [2021-07-09 17:45:54,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6401 to 5944. [2021-07-09 17:45:54,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5944 states, 5943 states have (on average 3.512872286723877) internal successors, (20877), 5943 states have internal predecessors, (20877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:54,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5944 states to 5944 states and 20877 transitions. [2021-07-09 17:45:54,778 INFO L78 Accepts]: Start accepts. Automaton has 5944 states and 20877 transitions. Word has length 47 [2021-07-09 17:45:54,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:45:54,778 INFO L482 AbstractCegarLoop]: Abstraction has 5944 states and 20877 transitions. [2021-07-09 17:45:54,778 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:54,778 INFO L276 IsEmpty]: Start isEmpty. Operand 5944 states and 20877 transitions. [2021-07-09 17:45:54,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:45:54,788 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:45:54,788 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:45:54,788 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-07-09 17:45:54,788 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:45:54,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:45:54,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1124657476, now seen corresponding path program 44 times [2021-07-09 17:45:54,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:45:54,788 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155033035] [2021-07-09 17:45:54,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:45:54,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:45:55,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:45:55,010 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:45:55,010 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155033035] [2021-07-09 17:45:55,011 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155033035] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:45:55,011 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:45:55,011 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:45:55,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59422866] [2021-07-09 17:45:55,011 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:45:55,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:45:55,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:45:55,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:45:55,011 INFO L87 Difference]: Start difference. First operand 5944 states and 20877 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:56,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:45:56,281 INFO L93 Difference]: Finished difference Result 6678 states and 23209 transitions. [2021-07-09 17:45:56,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-07-09 17:45:56,281 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:45:56,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:45:56,295 INFO L225 Difference]: With dead ends: 6678 [2021-07-09 17:45:56,295 INFO L226 Difference]: Without dead ends: 6541 [2021-07-09 17:45:56,296 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 847.5ms TimeCoverageRelationStatistics Valid=243, Invalid=2409, Unknown=0, NotChecked=0, Total=2652 [2021-07-09 17:45:56,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6541 states. [2021-07-09 17:45:56,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6541 to 5950. [2021-07-09 17:45:56,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5950 states, 5949 states have (on average 3.511514540258867) internal successors, (20890), 5949 states have internal predecessors, (20890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:56,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5950 states to 5950 states and 20890 transitions. [2021-07-09 17:45:56,416 INFO L78 Accepts]: Start accepts. Automaton has 5950 states and 20890 transitions. Word has length 47 [2021-07-09 17:45:56,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:45:56,417 INFO L482 AbstractCegarLoop]: Abstraction has 5950 states and 20890 transitions. [2021-07-09 17:45:56,417 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:56,417 INFO L276 IsEmpty]: Start isEmpty. Operand 5950 states and 20890 transitions. [2021-07-09 17:45:56,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:45:56,425 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:45:56,426 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:45:56,426 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-07-09 17:45:56,426 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:45:56,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:45:56,426 INFO L82 PathProgramCache]: Analyzing trace with hash 446763960, now seen corresponding path program 45 times [2021-07-09 17:45:56,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:45:56,426 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922921291] [2021-07-09 17:45:56,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:45:56,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:45:56,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:45:56,687 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:45:56,687 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922921291] [2021-07-09 17:45:56,687 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922921291] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:45:56,687 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:45:56,687 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:45:56,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863692613] [2021-07-09 17:45:56,687 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:45:56,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:45:56,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:45:56,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:45:56,688 INFO L87 Difference]: Start difference. First operand 5950 states and 20890 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:59,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:45:59,165 INFO L93 Difference]: Finished difference Result 9988 states and 35005 transitions. [2021-07-09 17:45:59,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-07-09 17:45:59,165 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:45:59,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:45:59,188 INFO L225 Difference]: With dead ends: 9988 [2021-07-09 17:45:59,188 INFO L226 Difference]: Without dead ends: 9893 [2021-07-09 17:45:59,189 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1396 ImplicationChecksByTransitivity, 1330.2ms TimeCoverageRelationStatistics Valid=394, Invalid=4718, Unknown=0, NotChecked=0, Total=5112 [2021-07-09 17:45:59,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9893 states. [2021-07-09 17:45:59,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9893 to 5948. [2021-07-09 17:45:59,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5948 states, 5947 states have (on average 3.512863628720363) internal successors, (20891), 5947 states have internal predecessors, (20891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:59,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5948 states to 5948 states and 20891 transitions. [2021-07-09 17:45:59,329 INFO L78 Accepts]: Start accepts. Automaton has 5948 states and 20891 transitions. Word has length 47 [2021-07-09 17:45:59,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:45:59,329 INFO L482 AbstractCegarLoop]: Abstraction has 5948 states and 20891 transitions. [2021-07-09 17:45:59,329 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:45:59,329 INFO L276 IsEmpty]: Start isEmpty. Operand 5948 states and 20891 transitions. [2021-07-09 17:45:59,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:45:59,338 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:45:59,338 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:45:59,338 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-07-09 17:45:59,338 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:45:59,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:45:59,338 INFO L82 PathProgramCache]: Analyzing trace with hash 745655638, now seen corresponding path program 46 times [2021-07-09 17:45:59,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:45:59,338 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237446169] [2021-07-09 17:45:59,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:45:59,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:45:59,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:45:59,576 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:45:59,576 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237446169] [2021-07-09 17:45:59,577 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237446169] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:45:59,577 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:45:59,577 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:45:59,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553143893] [2021-07-09 17:45:59,577 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:45:59,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:45:59,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:45:59,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:45:59,577 INFO L87 Difference]: Start difference. First operand 5948 states and 20891 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:00,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:46:00,868 INFO L93 Difference]: Finished difference Result 6579 states and 22906 transitions. [2021-07-09 17:46:00,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-07-09 17:46:00,868 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:46:00,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:46:00,882 INFO L225 Difference]: With dead ends: 6579 [2021-07-09 17:46:00,882 INFO L226 Difference]: Without dead ends: 6482 [2021-07-09 17:46:00,883 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 524 ImplicationChecksByTransitivity, 861.5ms TimeCoverageRelationStatistics Valid=235, Invalid=2315, Unknown=0, NotChecked=0, Total=2550 [2021-07-09 17:46:00,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6482 states. [2021-07-09 17:46:00,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6482 to 5956. [2021-07-09 17:46:00,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5956 states, 5955 states have (on average 3.5111670864819478) internal successors, (20909), 5955 states have internal predecessors, (20909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:00,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5956 states to 5956 states and 20909 transitions. [2021-07-09 17:46:00,978 INFO L78 Accepts]: Start accepts. Automaton has 5956 states and 20909 transitions. Word has length 47 [2021-07-09 17:46:00,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:46:00,978 INFO L482 AbstractCegarLoop]: Abstraction has 5956 states and 20909 transitions. [2021-07-09 17:46:00,978 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:00,978 INFO L276 IsEmpty]: Start isEmpty. Operand 5956 states and 20909 transitions. [2021-07-09 17:46:00,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:46:00,987 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:46:00,987 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:46:00,987 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-07-09 17:46:00,987 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:46:00,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:46:00,988 INFO L82 PathProgramCache]: Analyzing trace with hash -979764872, now seen corresponding path program 47 times [2021-07-09 17:46:00,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:46:00,988 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743066427] [2021-07-09 17:46:00,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:46:00,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:46:01,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:46:01,222 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:46:01,222 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743066427] [2021-07-09 17:46:01,222 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743066427] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:46:01,222 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:46:01,222 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:46:01,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591861390] [2021-07-09 17:46:01,223 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:46:01,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:46:01,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:46:01,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:46:01,223 INFO L87 Difference]: Start difference. First operand 5956 states and 20909 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:02,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:46:02,342 INFO L93 Difference]: Finished difference Result 6464 states and 22553 transitions. [2021-07-09 17:46:02,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-07-09 17:46:02,342 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:46:02,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:46:02,355 INFO L225 Difference]: With dead ends: 6464 [2021-07-09 17:46:02,355 INFO L226 Difference]: Without dead ends: 6365 [2021-07-09 17:46:02,356 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 753.4ms TimeCoverageRelationStatistics Valid=207, Invalid=1955, Unknown=0, NotChecked=0, Total=2162 [2021-07-09 17:46:02,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6365 states. [2021-07-09 17:46:02,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6365 to 5948. [2021-07-09 17:46:02,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5948 states, 5947 states have (on average 3.51252732470153) internal successors, (20889), 5947 states have internal predecessors, (20889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:02,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5948 states to 5948 states and 20889 transitions. [2021-07-09 17:46:02,448 INFO L78 Accepts]: Start accepts. Automaton has 5948 states and 20889 transitions. Word has length 47 [2021-07-09 17:46:02,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:46:02,448 INFO L482 AbstractCegarLoop]: Abstraction has 5948 states and 20889 transitions. [2021-07-09 17:46:02,448 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:02,448 INFO L276 IsEmpty]: Start isEmpty. Operand 5948 states and 20889 transitions. [2021-07-09 17:46:02,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:46:02,457 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:46:02,457 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:46:02,457 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-07-09 17:46:02,457 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:46:02,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:46:02,458 INFO L82 PathProgramCache]: Analyzing trace with hash 95979692, now seen corresponding path program 48 times [2021-07-09 17:46:02,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:46:02,458 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322098238] [2021-07-09 17:46:02,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:46:02,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:46:02,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:46:02,681 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:46:02,681 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322098238] [2021-07-09 17:46:02,681 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322098238] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:46:02,681 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:46:02,681 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:46:02,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044251574] [2021-07-09 17:46:02,682 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:46:02,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:46:02,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:46:02,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:46:02,683 INFO L87 Difference]: Start difference. First operand 5948 states and 20889 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) [2021-07-09 17:46:03,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:46:03,792 INFO L93 Difference]: Finished difference Result 6385 states and 22344 transitions. [2021-07-09 17:46:03,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-07-09 17:46:03,793 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 [2021-07-09 17:46:03,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:46:03,806 INFO L225 Difference]: With dead ends: 6385 [2021-07-09 17:46:03,806 INFO L226 Difference]: Without dead ends: 6240 [2021-07-09 17:46:03,806 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 744.5ms TimeCoverageRelationStatistics Valid=192, Invalid=1788, Unknown=0, NotChecked=0, Total=1980 [2021-07-09 17:46:03,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6240 states. [2021-07-09 17:46:03,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6240 to 5960. [2021-07-09 17:46:03,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5960 states, 5959 states have (on average 3.5104883369692903) internal successors, (20919), 5959 states have internal predecessors, (20919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:03,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5960 states to 5960 states and 20919 transitions. [2021-07-09 17:46:03,900 INFO L78 Accepts]: Start accepts. Automaton has 5960 states and 20919 transitions. Word has length 47 [2021-07-09 17:46:03,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:46:03,900 INFO L482 AbstractCegarLoop]: Abstraction has 5960 states and 20919 transitions. [2021-07-09 17:46:03,900 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) [2021-07-09 17:46:03,900 INFO L276 IsEmpty]: Start isEmpty. Operand 5960 states and 20919 transitions. [2021-07-09 17:46:03,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:46:03,909 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:46:03,909 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:46:03,909 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-07-09 17:46:03,909 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:46:03,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:46:03,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1847473014, now seen corresponding path program 49 times [2021-07-09 17:46:03,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:46:03,909 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484364543] [2021-07-09 17:46:03,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:46:03,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:46:04,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:46:04,132 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:46:04,132 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484364543] [2021-07-09 17:46:04,132 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484364543] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:46:04,132 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:46:04,132 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:46:04,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762560179] [2021-07-09 17:46:04,133 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:46:04,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:46:04,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:46:04,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:46:04,133 INFO L87 Difference]: Start difference. First operand 5960 states and 20919 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:05,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:46:05,311 INFO L93 Difference]: Finished difference Result 6406 states and 22348 transitions. [2021-07-09 17:46:05,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-07-09 17:46:05,311 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:46:05,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:46:05,324 INFO L225 Difference]: With dead ends: 6406 [2021-07-09 17:46:05,325 INFO L226 Difference]: Without dead ends: 6309 [2021-07-09 17:46:05,325 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 767.7ms TimeCoverageRelationStatistics Valid=201, Invalid=1961, Unknown=0, NotChecked=0, Total=2162 [2021-07-09 17:46:05,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6309 states. [2021-07-09 17:46:05,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6309 to 5966. [2021-07-09 17:46:05,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5966 states, 5965 states have (on average 3.5094719195305952) internal successors, (20934), 5965 states have internal predecessors, (20934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:05,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5966 states to 5966 states and 20934 transitions. [2021-07-09 17:46:05,421 INFO L78 Accepts]: Start accepts. Automaton has 5966 states and 20934 transitions. Word has length 47 [2021-07-09 17:46:05,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:46:05,421 INFO L482 AbstractCegarLoop]: Abstraction has 5966 states and 20934 transitions. [2021-07-09 17:46:05,421 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:05,421 INFO L276 IsEmpty]: Start isEmpty. Operand 5966 states and 20934 transitions. [2021-07-09 17:46:05,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:46:05,430 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:46:05,431 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:46:05,431 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-07-09 17:46:05,431 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:46:05,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:46:05,431 INFO L82 PathProgramCache]: Analyzing trace with hash 722073772, now seen corresponding path program 50 times [2021-07-09 17:46:05,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:46:05,431 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67452250] [2021-07-09 17:46:05,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:46:05,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:46:05,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:46:05,655 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:46:05,655 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67452250] [2021-07-09 17:46:05,655 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67452250] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:46:05,655 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:46:05,655 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:46:05,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544329909] [2021-07-09 17:46:05,655 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:46:05,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:46:05,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:46:05,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:46:05,656 INFO L87 Difference]: Start difference. First operand 5966 states and 20934 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:06,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:46:06,697 INFO L93 Difference]: Finished difference Result 6291 states and 21995 transitions. [2021-07-09 17:46:06,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-07-09 17:46:06,697 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:46:06,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:46:06,710 INFO L225 Difference]: With dead ends: 6291 [2021-07-09 17:46:06,711 INFO L226 Difference]: Without dead ends: 6170 [2021-07-09 17:46:06,711 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 685.6ms TimeCoverageRelationStatistics Valid=184, Invalid=1708, Unknown=0, NotChecked=0, Total=1892 [2021-07-09 17:46:06,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6170 states. [2021-07-09 17:46:06,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6170 to 5936. [2021-07-09 17:46:06,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5936 states, 5935 states have (on average 3.5142375737152487) internal successors, (20857), 5935 states have internal predecessors, (20857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:06,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5936 states to 5936 states and 20857 transitions. [2021-07-09 17:46:06,849 INFO L78 Accepts]: Start accepts. Automaton has 5936 states and 20857 transitions. Word has length 47 [2021-07-09 17:46:06,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:46:06,849 INFO L482 AbstractCegarLoop]: Abstraction has 5936 states and 20857 transitions. [2021-07-09 17:46:06,849 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:06,849 INFO L276 IsEmpty]: Start isEmpty. Operand 5936 states and 20857 transitions. [2021-07-09 17:46:06,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:46:06,857 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:46:06,857 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:46:06,857 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-07-09 17:46:06,858 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:46:06,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:46:06,858 INFO L82 PathProgramCache]: Analyzing trace with hash 768289678, now seen corresponding path program 51 times [2021-07-09 17:46:06,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:46:06,858 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199063747] [2021-07-09 17:46:06,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:46:06,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:46:07,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:46:07,042 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:46:07,042 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199063747] [2021-07-09 17:46:07,042 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199063747] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:46:07,042 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:46:07,042 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 17:46:07,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082117410] [2021-07-09 17:46:07,042 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 17:46:07,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:46:07,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 17:46:07,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-07-09 17:46:07,043 INFO L87 Difference]: Start difference. First operand 5936 states and 20857 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) [2021-07-09 17:46:07,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:46:07,963 INFO L93 Difference]: Finished difference Result 6489 states and 22676 transitions. [2021-07-09 17:46:07,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-07-09 17:46:07,964 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 [2021-07-09 17:46:07,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:46:07,977 INFO L225 Difference]: With dead ends: 6489 [2021-07-09 17:46:07,977 INFO L226 Difference]: Without dead ends: 6352 [2021-07-09 17:46:07,977 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 574.6ms TimeCoverageRelationStatistics Valid=155, Invalid=1405, Unknown=0, NotChecked=0, Total=1560 [2021-07-09 17:46:07,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6352 states. [2021-07-09 17:46:08,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6352 to 5952. [2021-07-09 17:46:08,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5952 states, 5951 states have (on average 3.5138632162661736) internal successors, (20911), 5951 states have internal predecessors, (20911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:08,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5952 states to 5952 states and 20911 transitions. [2021-07-09 17:46:08,071 INFO L78 Accepts]: Start accepts. Automaton has 5952 states and 20911 transitions. Word has length 47 [2021-07-09 17:46:08,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:46:08,072 INFO L482 AbstractCegarLoop]: Abstraction has 5952 states and 20911 transitions. [2021-07-09 17:46:08,072 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) [2021-07-09 17:46:08,072 INFO L276 IsEmpty]: Start isEmpty. Operand 5952 states and 20911 transitions. [2021-07-09 17:46:08,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:46:08,081 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:46:08,081 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:46:08,081 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-07-09 17:46:08,081 INFO L430 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:46:08,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:46:08,081 INFO L82 PathProgramCache]: Analyzing trace with hash -40650930, now seen corresponding path program 52 times [2021-07-09 17:46:08,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:46:08,081 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557094603] [2021-07-09 17:46:08,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:46:08,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:46:08,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:46:08,306 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:46:08,306 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557094603] [2021-07-09 17:46:08,307 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557094603] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:46:08,307 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:46:08,307 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:46:08,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684472800] [2021-07-09 17:46:08,307 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:46:08,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:46:08,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:46:08,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:46:08,307 INFO L87 Difference]: Start difference. First operand 5952 states and 20911 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) [2021-07-09 17:46:09,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:46:09,338 INFO L93 Difference]: Finished difference Result 6473 states and 22620 transitions. [2021-07-09 17:46:09,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-07-09 17:46:09,338 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 [2021-07-09 17:46:09,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:46:09,352 INFO L225 Difference]: With dead ends: 6473 [2021-07-09 17:46:09,352 INFO L226 Difference]: Without dead ends: 6328 [2021-07-09 17:46:09,352 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 660.0ms TimeCoverageRelationStatistics Valid=171, Invalid=1635, Unknown=0, NotChecked=0, Total=1806 [2021-07-09 17:46:09,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6328 states. [2021-07-09 17:46:09,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6328 to 6016. [2021-07-09 17:46:09,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6016 states, 6015 states have (on average 3.508395677472984) internal successors, (21103), 6015 states have internal predecessors, (21103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:09,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6016 states to 6016 states and 21103 transitions. [2021-07-09 17:46:09,468 INFO L78 Accepts]: Start accepts. Automaton has 6016 states and 21103 transitions. Word has length 47 [2021-07-09 17:46:09,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:46:09,468 INFO L482 AbstractCegarLoop]: Abstraction has 6016 states and 21103 transitions. [2021-07-09 17:46:09,468 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) [2021-07-09 17:46:09,468 INFO L276 IsEmpty]: Start isEmpty. Operand 6016 states and 21103 transitions. [2021-07-09 17:46:09,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:46:09,477 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:46:09,477 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:46:09,477 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-07-09 17:46:09,477 INFO L430 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:46:09,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:46:09,477 INFO L82 PathProgramCache]: Analyzing trace with hash -314306290, now seen corresponding path program 53 times [2021-07-09 17:46:09,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:46:09,478 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937617422] [2021-07-09 17:46:09,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:46:09,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:46:09,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:46:09,678 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:46:09,678 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937617422] [2021-07-09 17:46:09,678 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937617422] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:46:09,678 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:46:09,678 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:46:09,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954865586] [2021-07-09 17:46:09,679 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:46:09,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:46:09,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:46:09,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:46:09,679 INFO L87 Difference]: Start difference. First operand 6016 states and 21103 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) [2021-07-09 17:46:10,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:46:10,696 INFO L93 Difference]: Finished difference Result 6521 states and 22796 transitions. [2021-07-09 17:46:10,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-07-09 17:46:10,696 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 [2021-07-09 17:46:10,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:46:10,710 INFO L225 Difference]: With dead ends: 6521 [2021-07-09 17:46:10,710 INFO L226 Difference]: Without dead ends: 6272 [2021-07-09 17:46:10,710 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 654.9ms TimeCoverageRelationStatistics Valid=171, Invalid=1635, Unknown=0, NotChecked=0, Total=1806 [2021-07-09 17:46:10,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6272 states. [2021-07-09 17:46:10,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6272 to 5952. [2021-07-09 17:46:10,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5952 states, 5951 states have (on average 3.511174592505461) internal successors, (20895), 5951 states have internal predecessors, (20895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:10,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5952 states to 5952 states and 20895 transitions. [2021-07-09 17:46:10,804 INFO L78 Accepts]: Start accepts. Automaton has 5952 states and 20895 transitions. Word has length 47 [2021-07-09 17:46:10,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:46:10,804 INFO L482 AbstractCegarLoop]: Abstraction has 5952 states and 20895 transitions. [2021-07-09 17:46:10,805 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) [2021-07-09 17:46:10,805 INFO L276 IsEmpty]: Start isEmpty. Operand 5952 states and 20895 transitions. [2021-07-09 17:46:10,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:46:10,813 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:46:10,813 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:46:10,813 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-07-09 17:46:10,814 INFO L430 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:46:10,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:46:10,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1421012972, now seen corresponding path program 54 times [2021-07-09 17:46:10,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:46:10,814 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100115370] [2021-07-09 17:46:10,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:46:10,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:46:11,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:46:11,026 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:46:11,026 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100115370] [2021-07-09 17:46:11,026 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100115370] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:46:11,026 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:46:11,026 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:46:11,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249831263] [2021-07-09 17:46:11,027 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:46:11,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:46:11,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:46:11,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:46:11,027 INFO L87 Difference]: Start difference. First operand 5952 states and 20895 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) [2021-07-09 17:46:12,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:46:12,042 INFO L93 Difference]: Finished difference Result 6409 states and 22380 transitions. [2021-07-09 17:46:12,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-09 17:46:12,042 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 [2021-07-09 17:46:12,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:46:12,055 INFO L225 Difference]: With dead ends: 6409 [2021-07-09 17:46:12,055 INFO L226 Difference]: Without dead ends: 6272 [2021-07-09 17:46:12,055 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 660.0ms TimeCoverageRelationStatistics Valid=164, Invalid=1558, Unknown=0, NotChecked=0, Total=1722 [2021-07-09 17:46:12,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6272 states. [2021-07-09 17:46:12,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6272 to 5970. [2021-07-09 17:46:12,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5970 states, 5969 states have (on average 3.5081253141229687) internal successors, (20940), 5969 states have internal predecessors, (20940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:12,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5970 states to 5970 states and 20940 transitions. [2021-07-09 17:46:12,145 INFO L78 Accepts]: Start accepts. Automaton has 5970 states and 20940 transitions. Word has length 47 [2021-07-09 17:46:12,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:46:12,145 INFO L482 AbstractCegarLoop]: Abstraction has 5970 states and 20940 transitions. [2021-07-09 17:46:12,145 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) [2021-07-09 17:46:12,145 INFO L276 IsEmpty]: Start isEmpty. Operand 5970 states and 20940 transitions. [2021-07-09 17:46:12,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:46:12,154 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:46:12,154 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:46:12,154 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-07-09 17:46:12,154 INFO L430 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:46:12,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:46:12,154 INFO L82 PathProgramCache]: Analyzing trace with hash 612072364, now seen corresponding path program 55 times [2021-07-09 17:46:12,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:46:12,154 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283641097] [2021-07-09 17:46:12,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:46:12,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:46:12,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:46:12,388 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:46:12,388 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283641097] [2021-07-09 17:46:12,388 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283641097] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:46:12,388 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:46:12,388 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:46:12,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611555340] [2021-07-09 17:46:12,389 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:46:12,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:46:12,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:46:12,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:46:12,389 INFO L87 Difference]: Start difference. First operand 5970 states and 20940 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:13,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:46:13,471 INFO L93 Difference]: Finished difference Result 6393 states and 22312 transitions. [2021-07-09 17:46:13,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-07-09 17:46:13,472 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:46:13,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:46:13,485 INFO L225 Difference]: With dead ends: 6393 [2021-07-09 17:46:13,485 INFO L226 Difference]: Without dead ends: 6248 [2021-07-09 17:46:13,485 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 706.5ms TimeCoverageRelationStatistics Valid=181, Invalid=1799, Unknown=0, NotChecked=0, Total=1980 [2021-07-09 17:46:13,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6248 states. [2021-07-09 17:46:13,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6248 to 5970. [2021-07-09 17:46:13,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5970 states, 5969 states have (on average 3.50712012062322) internal successors, (20934), 5969 states have internal predecessors, (20934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:13,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5970 states to 5970 states and 20934 transitions. [2021-07-09 17:46:13,578 INFO L78 Accepts]: Start accepts. Automaton has 5970 states and 20934 transitions. Word has length 47 [2021-07-09 17:46:13,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:46:13,578 INFO L482 AbstractCegarLoop]: Abstraction has 5970 states and 20934 transitions. [2021-07-09 17:46:13,578 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:13,578 INFO L276 IsEmpty]: Start isEmpty. Operand 5970 states and 20934 transitions. [2021-07-09 17:46:13,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:46:13,586 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:46:13,586 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:46:13,587 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-07-09 17:46:13,587 INFO L430 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:46:13,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:46:13,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1511968142, now seen corresponding path program 56 times [2021-07-09 17:46:13,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:46:13,587 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862802100] [2021-07-09 17:46:13,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:46:13,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:46:13,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:46:13,808 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:46:13,808 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862802100] [2021-07-09 17:46:13,808 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862802100] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:46:13,808 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:46:13,808 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:46:13,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434782123] [2021-07-09 17:46:13,808 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:46:13,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:46:13,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:46:13,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:46:13,809 INFO L87 Difference]: Start difference. First operand 5970 states and 20934 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:17,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:46:17,223 INFO L93 Difference]: Finished difference Result 11008 states and 39096 transitions. [2021-07-09 17:46:17,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-07-09 17:46:17,223 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:46:17,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:46:17,248 INFO L225 Difference]: With dead ends: 11008 [2021-07-09 17:46:17,248 INFO L226 Difference]: Without dead ends: 10871 [2021-07-09 17:46:17,249 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2066 ImplicationChecksByTransitivity, 1934.4ms TimeCoverageRelationStatistics Valid=609, Invalid=6363, Unknown=0, NotChecked=0, Total=6972 [2021-07-09 17:46:17,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10871 states. [2021-07-09 17:46:17,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10871 to 6020. [2021-07-09 17:46:17,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6020 states, 6019 states have (on average 3.507227114138561) internal successors, (21110), 6019 states have internal predecessors, (21110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:17,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6020 states to 6020 states and 21110 transitions. [2021-07-09 17:46:17,398 INFO L78 Accepts]: Start accepts. Automaton has 6020 states and 21110 transitions. Word has length 47 [2021-07-09 17:46:17,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:46:17,399 INFO L482 AbstractCegarLoop]: Abstraction has 6020 states and 21110 transitions. [2021-07-09 17:46:17,399 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:17,399 INFO L276 IsEmpty]: Start isEmpty. Operand 6020 states and 21110 transitions. [2021-07-09 17:46:17,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:46:17,407 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:46:17,407 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:46:17,407 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-07-09 17:46:17,408 INFO L430 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:46:17,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:46:17,408 INFO L82 PathProgramCache]: Analyzing trace with hash 661316234, now seen corresponding path program 57 times [2021-07-09 17:46:17,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:46:17,408 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758733910] [2021-07-09 17:46:17,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:46:17,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:46:17,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:46:17,631 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:46:17,631 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758733910] [2021-07-09 17:46:17,631 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758733910] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:46:17,631 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:46:17,631 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:46:17,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988966418] [2021-07-09 17:46:17,631 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:46:17,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:46:17,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:46:17,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:46:17,631 INFO L87 Difference]: Start difference. First operand 6020 states and 21110 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:21,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:46:21,009 INFO L93 Difference]: Finished difference Result 11027 states and 39284 transitions. [2021-07-09 17:46:21,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-07-09 17:46:21,009 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:46:21,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:46:21,033 INFO L225 Difference]: With dead ends: 11027 [2021-07-09 17:46:21,033 INFO L226 Difference]: Without dead ends: 10920 [2021-07-09 17:46:21,034 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1945 ImplicationChecksByTransitivity, 1842.9ms TimeCoverageRelationStatistics Valid=568, Invalid=6074, Unknown=0, NotChecked=0, Total=6642 [2021-07-09 17:46:21,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10920 states. [2021-07-09 17:46:21,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10920 to 5998. [2021-07-09 17:46:21,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5998 states, 5997 states have (on average 3.510255127563782) internal successors, (21051), 5997 states have internal predecessors, (21051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:21,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5998 states to 5998 states and 21051 transitions. [2021-07-09 17:46:21,157 INFO L78 Accepts]: Start accepts. Automaton has 5998 states and 21051 transitions. Word has length 47 [2021-07-09 17:46:21,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:46:21,157 INFO L482 AbstractCegarLoop]: Abstraction has 5998 states and 21051 transitions. [2021-07-09 17:46:21,158 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:21,158 INFO L276 IsEmpty]: Start isEmpty. Operand 5998 states and 21051 transitions. [2021-07-09 17:46:21,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:46:21,166 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:46:21,166 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:46:21,166 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-07-09 17:46:21,166 INFO L430 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:46:21,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:46:21,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1953049616, now seen corresponding path program 58 times [2021-07-09 17:46:21,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:46:21,167 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497647098] [2021-07-09 17:46:21,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:46:21,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:46:21,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:46:21,385 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:46:21,385 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497647098] [2021-07-09 17:46:21,385 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497647098] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:46:21,385 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:46:21,385 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:46:21,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461779987] [2021-07-09 17:46:21,385 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:46:21,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:46:21,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:46:21,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:46:21,386 INFO L87 Difference]: Start difference. First operand 5998 states and 21051 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:22,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:46:22,640 INFO L93 Difference]: Finished difference Result 6601 states and 22970 transitions. [2021-07-09 17:46:22,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-07-09 17:46:22,640 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:46:22,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:46:22,654 INFO L225 Difference]: With dead ends: 6601 [2021-07-09 17:46:22,654 INFO L226 Difference]: Without dead ends: 6480 [2021-07-09 17:46:22,654 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 813.3ms TimeCoverageRelationStatistics Valid=210, Invalid=2142, Unknown=0, NotChecked=0, Total=2352 [2021-07-09 17:46:22,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6480 states. [2021-07-09 17:46:22,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6480 to 6004. [2021-07-09 17:46:22,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6004 states, 6003 states have (on average 3.508912210561386) internal successors, (21064), 6003 states have internal predecessors, (21064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:22,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6004 states to 6004 states and 21064 transitions. [2021-07-09 17:46:22,795 INFO L78 Accepts]: Start accepts. Automaton has 6004 states and 21064 transitions. Word has length 47 [2021-07-09 17:46:22,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:46:22,795 INFO L482 AbstractCegarLoop]: Abstraction has 6004 states and 21064 transitions. [2021-07-09 17:46:22,795 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:22,795 INFO L276 IsEmpty]: Start isEmpty. Operand 6004 states and 21064 transitions. [2021-07-09 17:46:22,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:46:22,804 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:46:22,804 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:46:22,804 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-07-09 17:46:22,804 INFO L430 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:46:22,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:46:22,804 INFO L82 PathProgramCache]: Analyzing trace with hash -381628180, now seen corresponding path program 59 times [2021-07-09 17:46:22,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:46:22,805 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016901202] [2021-07-09 17:46:22,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:46:22,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:46:23,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:46:23,029 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:46:23,029 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016901202] [2021-07-09 17:46:23,029 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016901202] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:46:23,029 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:46:23,029 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:46:23,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500245822] [2021-07-09 17:46:23,029 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:46:23,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:46:23,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:46:23,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:46:23,030 INFO L87 Difference]: Start difference. First operand 6004 states and 21064 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:24,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:46:24,765 INFO L93 Difference]: Finished difference Result 7445 states and 26088 transitions. [2021-07-09 17:46:24,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-07-09 17:46:24,765 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:46:24,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:46:24,781 INFO L225 Difference]: With dead ends: 7445 [2021-07-09 17:46:24,781 INFO L226 Difference]: Without dead ends: 7201 [2021-07-09 17:46:24,782 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 971.8ms TimeCoverageRelationStatistics Valid=258, Invalid=2822, Unknown=0, NotChecked=0, Total=3080 [2021-07-09 17:46:24,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7201 states. [2021-07-09 17:46:24,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7201 to 6072. [2021-07-09 17:46:24,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6072 states, 6071 states have (on average 3.5065063416241147) internal successors, (21288), 6071 states have internal predecessors, (21288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:24,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6072 states to 6072 states and 21288 transitions. [2021-07-09 17:46:24,883 INFO L78 Accepts]: Start accepts. Automaton has 6072 states and 21288 transitions. Word has length 47 [2021-07-09 17:46:24,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:46:24,884 INFO L482 AbstractCegarLoop]: Abstraction has 6072 states and 21288 transitions. [2021-07-09 17:46:24,884 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:24,884 INFO L276 IsEmpty]: Start isEmpty. Operand 6072 states and 21288 transitions. [2021-07-09 17:46:24,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:46:24,894 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:46:24,894 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:46:24,894 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-07-09 17:46:24,894 INFO L430 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:46:24,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:46:24,894 INFO L82 PathProgramCache]: Analyzing trace with hash -82736502, now seen corresponding path program 60 times [2021-07-09 17:46:24,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:46:24,894 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753555218] [2021-07-09 17:46:24,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:46:24,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:46:25,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:46:25,124 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:46:25,124 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753555218] [2021-07-09 17:46:25,124 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753555218] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:46:25,124 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:46:25,124 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:46:25,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905006882] [2021-07-09 17:46:25,124 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:46:25,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:46:25,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:46:25,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:46:25,125 INFO L87 Difference]: Start difference. First operand 6072 states and 21288 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:26,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:46:26,352 INFO L93 Difference]: Finished difference Result 6570 states and 22873 transitions. [2021-07-09 17:46:26,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-07-09 17:46:26,352 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:46:26,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:46:26,366 INFO L225 Difference]: With dead ends: 6570 [2021-07-09 17:46:26,366 INFO L226 Difference]: Without dead ends: 6473 [2021-07-09 17:46:26,367 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 787.6ms TimeCoverageRelationStatistics Valid=193, Invalid=1969, Unknown=0, NotChecked=0, Total=2162 [2021-07-09 17:46:26,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6473 states. [2021-07-09 17:46:26,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6473 to 6086. [2021-07-09 17:46:26,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6086 states, 6085 states have (on average 3.5028759244042726) internal successors, (21315), 6085 states have internal predecessors, (21315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:26,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6086 states to 6086 states and 21315 transitions. [2021-07-09 17:46:26,463 INFO L78 Accepts]: Start accepts. Automaton has 6086 states and 21315 transitions. Word has length 47 [2021-07-09 17:46:26,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:46:26,463 INFO L482 AbstractCegarLoop]: Abstraction has 6086 states and 21315 transitions. [2021-07-09 17:46:26,463 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:26,463 INFO L276 IsEmpty]: Start isEmpty. Operand 6086 states and 21315 transitions. [2021-07-09 17:46:26,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:46:26,472 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:46:26,472 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:46:26,472 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-07-09 17:46:26,472 INFO L430 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:46:26,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:46:26,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1808157012, now seen corresponding path program 61 times [2021-07-09 17:46:26,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:46:26,472 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962413157] [2021-07-09 17:46:26,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:46:26,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:46:26,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:46:26,686 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:46:26,686 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962413157] [2021-07-09 17:46:26,686 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962413157] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:46:26,686 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:46:26,686 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:46:26,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310014605] [2021-07-09 17:46:26,686 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:46:26,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:46:26,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:46:26,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:46:26,686 INFO L87 Difference]: Start difference. First operand 6086 states and 21315 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:27,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:46:27,756 INFO L93 Difference]: Finished difference Result 6455 states and 22520 transitions. [2021-07-09 17:46:27,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-07-09 17:46:27,757 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:46:27,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:46:27,770 INFO L225 Difference]: With dead ends: 6455 [2021-07-09 17:46:27,770 INFO L226 Difference]: Without dead ends: 6350 [2021-07-09 17:46:27,770 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 681.2ms TimeCoverageRelationStatistics Valid=178, Invalid=1802, Unknown=0, NotChecked=0, Total=1980 [2021-07-09 17:46:27,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6350 states. [2021-07-09 17:46:27,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6350 to 6072. [2021-07-09 17:46:27,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6072 states, 6071 states have (on average 3.505518036567287) internal successors, (21282), 6071 states have internal predecessors, (21282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:27,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6072 states to 6072 states and 21282 transitions. [2021-07-09 17:46:27,865 INFO L78 Accepts]: Start accepts. Automaton has 6072 states and 21282 transitions. Word has length 47 [2021-07-09 17:46:27,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:46:27,865 INFO L482 AbstractCegarLoop]: Abstraction has 6072 states and 21282 transitions. [2021-07-09 17:46:27,865 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:27,865 INFO L276 IsEmpty]: Start isEmpty. Operand 6072 states and 21282 transitions. [2021-07-09 17:46:27,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:46:27,874 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:46:27,874 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:46:27,874 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-07-09 17:46:27,874 INFO L430 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:46:27,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:46:27,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1732214588, now seen corresponding path program 62 times [2021-07-09 17:46:27,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:46:27,876 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403721301] [2021-07-09 17:46:27,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:46:27,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:46:28,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:46:28,142 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:46:28,142 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403721301] [2021-07-09 17:46:28,142 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403721301] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:46:28,142 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:46:28,142 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:46:28,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136487153] [2021-07-09 17:46:28,142 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:46:28,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:46:28,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:46:28,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:46:28,142 INFO L87 Difference]: Start difference. First operand 6072 states and 21282 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:29,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:46:29,306 INFO L93 Difference]: Finished difference Result 6712 states and 23400 transitions. [2021-07-09 17:46:29,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-07-09 17:46:29,307 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:46:29,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:46:29,320 INFO L225 Difference]: With dead ends: 6712 [2021-07-09 17:46:29,320 INFO L226 Difference]: Without dead ends: 6527 [2021-07-09 17:46:29,321 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 821.9ms TimeCoverageRelationStatistics Valid=207, Invalid=2049, Unknown=0, NotChecked=0, Total=2256 [2021-07-09 17:46:29,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6527 states. [2021-07-09 17:46:29,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6527 to 6076. [2021-07-09 17:46:29,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6076 states, 6075 states have (on average 3.504855967078189) internal successors, (21292), 6075 states have internal predecessors, (21292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:29,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6076 states to 6076 states and 21292 transitions. [2021-07-09 17:46:29,417 INFO L78 Accepts]: Start accepts. Automaton has 6076 states and 21292 transitions. Word has length 47 [2021-07-09 17:46:29,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:46:29,417 INFO L482 AbstractCegarLoop]: Abstraction has 6076 states and 21292 transitions. [2021-07-09 17:46:29,417 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:29,417 INFO L276 IsEmpty]: Start isEmpty. Operand 6076 states and 21292 transitions. [2021-07-09 17:46:29,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:46:29,425 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:46:29,425 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:46:29,426 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-07-09 17:46:29,426 INFO L430 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:46:29,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:46:29,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1614722846, now seen corresponding path program 63 times [2021-07-09 17:46:29,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:46:29,426 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054576429] [2021-07-09 17:46:29,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:46:29,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:46:29,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:46:29,676 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:46:29,676 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054576429] [2021-07-09 17:46:29,676 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054576429] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:46:29,676 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:46:29,676 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:46:29,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565448280] [2021-07-09 17:46:29,677 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:46:29,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:46:29,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:46:29,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:46:29,677 INFO L87 Difference]: Start difference. First operand 6076 states and 21292 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:30,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:46:30,898 INFO L93 Difference]: Finished difference Result 6804 states and 23603 transitions. [2021-07-09 17:46:30,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-07-09 17:46:30,899 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:46:30,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:46:30,912 INFO L225 Difference]: With dead ends: 6804 [2021-07-09 17:46:30,912 INFO L226 Difference]: Without dead ends: 6667 [2021-07-09 17:46:30,912 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 850.1ms TimeCoverageRelationStatistics Valid=211, Invalid=2045, Unknown=0, NotChecked=0, Total=2256 [2021-07-09 17:46:30,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6667 states. [2021-07-09 17:46:30,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6667 to 6082. [2021-07-09 17:46:30,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6082 states, 6081 states have (on average 3.5035356026969247) internal successors, (21305), 6081 states have internal predecessors, (21305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:31,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6082 states to 6082 states and 21305 transitions. [2021-07-09 17:46:31,006 INFO L78 Accepts]: Start accepts. Automaton has 6082 states and 21305 transitions. Word has length 47 [2021-07-09 17:46:31,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:46:31,006 INFO L482 AbstractCegarLoop]: Abstraction has 6082 states and 21305 transitions. [2021-07-09 17:46:31,006 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:31,007 INFO L276 IsEmpty]: Start isEmpty. Operand 6082 states and 21305 transitions. [2021-07-09 17:46:31,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:46:31,016 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:46:31,016 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:46:31,016 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-07-09 17:46:31,016 INFO L430 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:46:31,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:46:31,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1108823014, now seen corresponding path program 64 times [2021-07-09 17:46:31,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:46:31,016 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322177741] [2021-07-09 17:46:31,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:46:31,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:46:31,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:46:31,240 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:46:31,241 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322177741] [2021-07-09 17:46:31,241 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322177741] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:46:31,241 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:46:31,241 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:46:31,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778543619] [2021-07-09 17:46:31,241 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:46:31,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:46:31,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:46:31,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:46:31,241 INFO L87 Difference]: Start difference. First operand 6082 states and 21305 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:33,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:46:33,824 INFO L93 Difference]: Finished difference Result 11009 states and 38579 transitions. [2021-07-09 17:46:33,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-07-09 17:46:33,824 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:46:33,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:46:33,847 INFO L225 Difference]: With dead ends: 11009 [2021-07-09 17:46:33,847 INFO L226 Difference]: Without dead ends: 10769 [2021-07-09 17:46:33,847 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1304 ImplicationChecksByTransitivity, 1250.4ms TimeCoverageRelationStatistics Valid=381, Invalid=4449, Unknown=0, NotChecked=0, Total=4830 [2021-07-09 17:46:33,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10769 states. [2021-07-09 17:46:33,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10769 to 6106. [2021-07-09 17:46:33,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6106 states, 6105 states have (on average 3.500900900900901) internal successors, (21373), 6105 states have internal predecessors, (21373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:33,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6106 states to 6106 states and 21373 transitions. [2021-07-09 17:46:33,969 INFO L78 Accepts]: Start accepts. Automaton has 6106 states and 21373 transitions. Word has length 47 [2021-07-09 17:46:33,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:46:33,969 INFO L482 AbstractCegarLoop]: Abstraction has 6106 states and 21373 transitions. [2021-07-09 17:46:33,969 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:33,969 INFO L276 IsEmpty]: Start isEmpty. Operand 6106 states and 21373 transitions. [2021-07-09 17:46:33,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:46:33,978 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:46:33,978 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:46:33,978 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-07-09 17:46:33,978 INFO L430 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:46:33,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:46:33,978 INFO L82 PathProgramCache]: Analyzing trace with hash -809931336, now seen corresponding path program 65 times [2021-07-09 17:46:33,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:46:33,979 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683590282] [2021-07-09 17:46:33,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:46:33,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:46:34,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:46:34,209 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:46:34,209 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683590282] [2021-07-09 17:46:34,209 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683590282] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:46:34,209 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:46:34,209 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:46:34,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409063806] [2021-07-09 17:46:34,209 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:46:34,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:46:34,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:46:34,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:46:34,210 INFO L87 Difference]: Start difference. First operand 6106 states and 21373 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:35,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:46:35,414 INFO L93 Difference]: Finished difference Result 6731 states and 23367 transitions. [2021-07-09 17:46:35,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-07-09 17:46:35,415 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:46:35,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:46:35,429 INFO L225 Difference]: With dead ends: 6731 [2021-07-09 17:46:35,429 INFO L226 Difference]: Without dead ends: 6634 [2021-07-09 17:46:35,430 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 796.4ms TimeCoverageRelationStatistics Valid=202, Invalid=1960, Unknown=0, NotChecked=0, Total=2162 [2021-07-09 17:46:35,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6634 states. [2021-07-09 17:46:35,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6634 to 6114. [2021-07-09 17:46:35,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6114 states, 6113 states have (on average 3.499263863896614) internal successors, (21391), 6113 states have internal predecessors, (21391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:35,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6114 states to 6114 states and 21391 transitions. [2021-07-09 17:46:35,533 INFO L78 Accepts]: Start accepts. Automaton has 6114 states and 21391 transitions. Word has length 47 [2021-07-09 17:46:35,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:46:35,533 INFO L482 AbstractCegarLoop]: Abstraction has 6114 states and 21391 transitions. [2021-07-09 17:46:35,533 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:35,533 INFO L276 IsEmpty]: Start isEmpty. Operand 6114 states and 21391 transitions. [2021-07-09 17:46:35,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:46:35,542 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:46:35,543 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:46:35,543 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-07-09 17:46:35,543 INFO L430 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:46:35,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:46:35,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1759615450, now seen corresponding path program 66 times [2021-07-09 17:46:35,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:46:35,543 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479873993] [2021-07-09 17:46:35,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:46:35,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:46:35,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:46:35,762 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:46:35,762 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479873993] [2021-07-09 17:46:35,762 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479873993] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:46:35,762 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:46:35,762 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:46:35,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92261316] [2021-07-09 17:46:35,762 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:46:35,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:46:35,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:46:35,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:46:35,763 INFO L87 Difference]: Start difference. First operand 6114 states and 21391 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:36,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:46:36,786 INFO L93 Difference]: Finished difference Result 6616 states and 23014 transitions. [2021-07-09 17:46:36,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-07-09 17:46:36,786 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:46:36,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:46:36,800 INFO L225 Difference]: With dead ends: 6616 [2021-07-09 17:46:36,800 INFO L226 Difference]: Without dead ends: 6517 [2021-07-09 17:46:36,800 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 665.5ms TimeCoverageRelationStatistics Valid=172, Invalid=1634, Unknown=0, NotChecked=0, Total=1806 [2021-07-09 17:46:36,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6517 states. [2021-07-09 17:46:36,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6517 to 6106. [2021-07-09 17:46:36,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6106 states, 6105 states have (on average 3.5005733005733006) internal successors, (21371), 6105 states have internal predecessors, (21371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:36,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6106 states to 6106 states and 21371 transitions. [2021-07-09 17:46:36,900 INFO L78 Accepts]: Start accepts. Automaton has 6106 states and 21371 transitions. Word has length 47 [2021-07-09 17:46:36,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:46:36,900 INFO L482 AbstractCegarLoop]: Abstraction has 6106 states and 21371 transitions. [2021-07-09 17:46:36,900 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:36,900 INFO L276 IsEmpty]: Start isEmpty. Operand 6106 states and 21371 transitions. [2021-07-09 17:46:36,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:46:36,909 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:46:36,909 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:46:36,909 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-07-09 17:46:36,909 INFO L430 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:46:36,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:46:36,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1459607282, now seen corresponding path program 67 times [2021-07-09 17:46:36,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:46:36,910 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263713427] [2021-07-09 17:46:36,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:46:36,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:46:37,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:46:37,127 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:46:37,127 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263713427] [2021-07-09 17:46:37,127 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263713427] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:46:37,127 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:46:37,127 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:46:37,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341729794] [2021-07-09 17:46:37,127 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:46:37,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:46:37,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:46:37,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:46:37,127 INFO L87 Difference]: Start difference. First operand 6106 states and 21371 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) [2021-07-09 17:46:38,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:46:38,143 INFO L93 Difference]: Finished difference Result 6537 states and 22805 transitions. [2021-07-09 17:46:38,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-07-09 17:46:38,143 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 [2021-07-09 17:46:38,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:46:38,157 INFO L225 Difference]: With dead ends: 6537 [2021-07-09 17:46:38,157 INFO L226 Difference]: Without dead ends: 6392 [2021-07-09 17:46:38,157 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 651.7ms TimeCoverageRelationStatistics Valid=169, Invalid=1553, Unknown=0, NotChecked=0, Total=1722 [2021-07-09 17:46:38,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6392 states. [2021-07-09 17:46:38,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6392 to 6118. [2021-07-09 17:46:38,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6118 states, 6117 states have (on average 3.4986104299493217) internal successors, (21401), 6117 states have internal predecessors, (21401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:38,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6118 states to 6118 states and 21401 transitions. [2021-07-09 17:46:38,254 INFO L78 Accepts]: Start accepts. Automaton has 6118 states and 21401 transitions. Word has length 47 [2021-07-09 17:46:38,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:46:38,254 INFO L482 AbstractCegarLoop]: Abstraction has 6118 states and 21401 transitions. [2021-07-09 17:46:38,255 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) [2021-07-09 17:46:38,255 INFO L276 IsEmpty]: Start isEmpty. Operand 6118 states and 21401 transitions. [2021-07-09 17:46:38,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:46:38,263 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:46:38,264 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:46:38,264 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-07-09 17:46:38,264 INFO L430 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:46:38,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:46:38,264 INFO L82 PathProgramCache]: Analyzing trace with hash 891907308, now seen corresponding path program 68 times [2021-07-09 17:46:38,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:46:38,264 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677217112] [2021-07-09 17:46:38,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:46:38,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:46:38,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:46:38,534 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:46:38,534 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677217112] [2021-07-09 17:46:38,534 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677217112] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:46:38,534 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:46:38,535 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:46:38,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353656841] [2021-07-09 17:46:38,535 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:46:38,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:46:38,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:46:38,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:46:38,535 INFO L87 Difference]: Start difference. First operand 6118 states and 21401 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:39,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:46:39,618 INFO L93 Difference]: Finished difference Result 6558 states and 22809 transitions. [2021-07-09 17:46:39,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-07-09 17:46:39,618 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:46:39,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:46:39,632 INFO L225 Difference]: With dead ends: 6558 [2021-07-09 17:46:39,632 INFO L226 Difference]: Without dead ends: 6461 [2021-07-09 17:46:39,632 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 748.9ms TimeCoverageRelationStatistics Valid=177, Invalid=1715, Unknown=0, NotChecked=0, Total=1892 [2021-07-09 17:46:39,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6461 states. [2021-07-09 17:46:39,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6461 to 6124. [2021-07-09 17:46:39,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6124 states, 6123 states have (on average 3.497631879797485) internal successors, (21416), 6123 states have internal predecessors, (21416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:39,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6124 states to 6124 states and 21416 transitions. [2021-07-09 17:46:39,731 INFO L78 Accepts]: Start accepts. Automaton has 6124 states and 21416 transitions. Word has length 47 [2021-07-09 17:46:39,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:46:39,731 INFO L482 AbstractCegarLoop]: Abstraction has 6124 states and 21416 transitions. [2021-07-09 17:46:39,731 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:39,731 INFO L276 IsEmpty]: Start isEmpty. Operand 6124 states and 21416 transitions. [2021-07-09 17:46:39,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:46:39,740 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:46:39,741 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:46:39,741 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-07-09 17:46:39,741 INFO L430 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:46:39,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:46:39,741 INFO L82 PathProgramCache]: Analyzing trace with hash -833513202, now seen corresponding path program 69 times [2021-07-09 17:46:39,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:46:39,741 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643383461] [2021-07-09 17:46:39,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:46:39,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:46:39,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:46:39,966 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:46:39,966 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643383461] [2021-07-09 17:46:39,966 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643383461] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:46:39,966 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:46:39,966 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:46:39,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845854851] [2021-07-09 17:46:39,967 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:46:39,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:46:39,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:46:39,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:46:39,967 INFO L87 Difference]: Start difference. First operand 6124 states and 21416 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:40,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:46:40,921 INFO L93 Difference]: Finished difference Result 6443 states and 22456 transitions. [2021-07-09 17:46:40,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-07-09 17:46:40,921 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:46:40,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:46:40,934 INFO L225 Difference]: With dead ends: 6443 [2021-07-09 17:46:40,934 INFO L226 Difference]: Without dead ends: 6282 [2021-07-09 17:46:40,934 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 625.7ms TimeCoverageRelationStatistics Valid=158, Invalid=1482, Unknown=0, NotChecked=0, Total=1640 [2021-07-09 17:46:40,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6282 states. [2021-07-09 17:46:41,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6282 to 6054. [2021-07-09 17:46:41,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6054 states, 6053 states have (on average 3.5081777630926814) internal successors, (21235), 6053 states have internal predecessors, (21235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:41,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6054 states to 6054 states and 21235 transitions. [2021-07-09 17:46:41,058 INFO L78 Accepts]: Start accepts. Automaton has 6054 states and 21235 transitions. Word has length 47 [2021-07-09 17:46:41,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:46:41,058 INFO L482 AbstractCegarLoop]: Abstraction has 6054 states and 21235 transitions. [2021-07-09 17:46:41,058 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:41,058 INFO L276 IsEmpty]: Start isEmpty. Operand 6054 states and 21235 transitions. [2021-07-09 17:46:41,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:46:41,067 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:46:41,067 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:46:41,067 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-07-09 17:46:41,067 INFO L430 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:46:41,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:46:41,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1839356320, now seen corresponding path program 70 times [2021-07-09 17:46:41,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:46:41,067 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801073196] [2021-07-09 17:46:41,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:46:41,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:46:41,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:46:41,257 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:46:41,257 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801073196] [2021-07-09 17:46:41,257 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801073196] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:46:41,257 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:46:41,257 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 17:46:41,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477110594] [2021-07-09 17:46:41,258 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 17:46:41,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:46:41,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 17:46:41,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-07-09 17:46:41,258 INFO L87 Difference]: Start difference. First operand 6054 states and 21235 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) [2021-07-09 17:46:42,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:46:42,206 INFO L93 Difference]: Finished difference Result 6791 states and 23680 transitions. [2021-07-09 17:46:42,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-07-09 17:46:42,206 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 [2021-07-09 17:46:42,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:46:42,220 INFO L225 Difference]: With dead ends: 6791 [2021-07-09 17:46:42,220 INFO L226 Difference]: Without dead ends: 6654 [2021-07-09 17:46:42,221 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 606.7ms TimeCoverageRelationStatistics Valid=165, Invalid=1475, Unknown=0, NotChecked=0, Total=1640 [2021-07-09 17:46:42,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6654 states. [2021-07-09 17:46:42,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6654 to 6074. [2021-07-09 17:46:42,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6074 states, 6073 states have (on average 3.507492178494978) internal successors, (21301), 6073 states have internal predecessors, (21301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:42,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6074 states to 6074 states and 21301 transitions. [2021-07-09 17:46:42,319 INFO L78 Accepts]: Start accepts. Automaton has 6074 states and 21301 transitions. Word has length 47 [2021-07-09 17:46:42,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:46:42,319 INFO L482 AbstractCegarLoop]: Abstraction has 6074 states and 21301 transitions. [2021-07-09 17:46:42,319 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) [2021-07-09 17:46:42,319 INFO L276 IsEmpty]: Start isEmpty. Operand 6074 states and 21301 transitions. [2021-07-09 17:46:42,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:46:42,328 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:46:42,328 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:46:42,328 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-07-09 17:46:42,328 INFO L430 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:46:42,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:46:42,328 INFO L82 PathProgramCache]: Analyzing trace with hash -937914754, now seen corresponding path program 71 times [2021-07-09 17:46:42,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:46:42,328 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267193846] [2021-07-09 17:46:42,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:46:42,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:46:42,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:46:42,528 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:46:42,528 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267193846] [2021-07-09 17:46:42,528 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267193846] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:46:42,528 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:46:42,528 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:46:42,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398958346] [2021-07-09 17:46:42,528 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:46:42,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:46:42,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:46:42,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:46:42,529 INFO L87 Difference]: Start difference. First operand 6074 states and 21301 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) [2021-07-09 17:46:43,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:46:43,589 INFO L93 Difference]: Finished difference Result 6850 states and 23839 transitions. [2021-07-09 17:46:43,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-07-09 17:46:43,590 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 [2021-07-09 17:46:43,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:46:43,604 INFO L225 Difference]: With dead ends: 6850 [2021-07-09 17:46:43,604 INFO L226 Difference]: Without dead ends: 6761 [2021-07-09 17:46:43,604 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 668.3ms TimeCoverageRelationStatistics Valid=183, Invalid=1709, Unknown=0, NotChecked=0, Total=1892 [2021-07-09 17:46:43,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6761 states. [2021-07-09 17:46:43,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6761 to 6170. [2021-07-09 17:46:43,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6170 states, 6169 states have (on average 3.500891554546928) internal successors, (21597), 6169 states have internal predecessors, (21597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:43,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6170 states to 6170 states and 21597 transitions. [2021-07-09 17:46:43,698 INFO L78 Accepts]: Start accepts. Automaton has 6170 states and 21597 transitions. Word has length 47 [2021-07-09 17:46:43,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:46:43,698 INFO L482 AbstractCegarLoop]: Abstraction has 6170 states and 21597 transitions. [2021-07-09 17:46:43,699 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) [2021-07-09 17:46:43,699 INFO L276 IsEmpty]: Start isEmpty. Operand 6170 states and 21597 transitions. [2021-07-09 17:46:43,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:46:43,708 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:46:43,708 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:46:43,708 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-07-09 17:46:43,708 INFO L430 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:46:43,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:46:43,709 INFO L82 PathProgramCache]: Analyzing trace with hash -503885408, now seen corresponding path program 72 times [2021-07-09 17:46:43,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:46:43,709 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913741704] [2021-07-09 17:46:43,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:46:43,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:46:43,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:46:43,913 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:46:43,913 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913741704] [2021-07-09 17:46:43,913 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913741704] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:46:43,913 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:46:43,913 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:46:43,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581133574] [2021-07-09 17:46:43,914 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:46:43,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:46:43,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:46:43,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:46:43,914 INFO L87 Difference]: Start difference. First operand 6170 states and 21597 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) [2021-07-09 17:46:45,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:46:45,008 INFO L93 Difference]: Finished difference Result 6839 states and 23808 transitions. [2021-07-09 17:46:45,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-07-09 17:46:45,008 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 [2021-07-09 17:46:45,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:46:45,022 INFO L225 Difference]: With dead ends: 6839 [2021-07-09 17:46:45,022 INFO L226 Difference]: Without dead ends: 6614 [2021-07-09 17:46:45,023 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 680.4ms TimeCoverageRelationStatistics Valid=183, Invalid=1797, Unknown=0, NotChecked=0, Total=1980 [2021-07-09 17:46:45,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6614 states. [2021-07-09 17:46:45,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6614 to 6144. [2021-07-09 17:46:45,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6144 states, 6143 states have (on average 3.501220901839492) internal successors, (21508), 6143 states have internal predecessors, (21508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:45,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6144 states to 6144 states and 21508 transitions. [2021-07-09 17:46:45,118 INFO L78 Accepts]: Start accepts. Automaton has 6144 states and 21508 transitions. Word has length 47 [2021-07-09 17:46:45,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:46:45,118 INFO L482 AbstractCegarLoop]: Abstraction has 6144 states and 21508 transitions. [2021-07-09 17:46:45,118 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) [2021-07-09 17:46:45,119 INFO L276 IsEmpty]: Start isEmpty. Operand 6144 states and 21508 transitions. [2021-07-09 17:46:45,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:46:45,127 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:46:45,127 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:46:45,127 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-07-09 17:46:45,127 INFO L430 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:46:45,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:46:45,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1057548078, now seen corresponding path program 73 times [2021-07-09 17:46:45,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:46:45,128 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086400010] [2021-07-09 17:46:45,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:46:45,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:46:45,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:46:45,326 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:46:45,326 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086400010] [2021-07-09 17:46:45,326 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086400010] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:46:45,326 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:46:45,326 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:46:45,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140670981] [2021-07-09 17:46:45,326 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:46:45,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:46:45,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:46:45,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:46:45,327 INFO L87 Difference]: Start difference. First operand 6144 states and 21508 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) [2021-07-09 17:46:46,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:46:46,392 INFO L93 Difference]: Finished difference Result 6842 states and 23813 transitions. [2021-07-09 17:46:46,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-07-09 17:46:46,392 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 [2021-07-09 17:46:46,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:46:46,407 INFO L225 Difference]: With dead ends: 6842 [2021-07-09 17:46:46,407 INFO L226 Difference]: Without dead ends: 6753 [2021-07-09 17:46:46,407 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 722.6ms TimeCoverageRelationStatistics Valid=189, Invalid=1791, Unknown=0, NotChecked=0, Total=1980 [2021-07-09 17:46:46,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6753 states. [2021-07-09 17:46:46,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6753 to 6168. [2021-07-09 17:46:46,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6168 states, 6167 states have (on average 3.4999189233014434) internal successors, (21584), 6167 states have internal predecessors, (21584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:46,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6168 states to 6168 states and 21584 transitions. [2021-07-09 17:46:46,507 INFO L78 Accepts]: Start accepts. Automaton has 6168 states and 21584 transitions. Word has length 47 [2021-07-09 17:46:46,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:46:46,507 INFO L482 AbstractCegarLoop]: Abstraction has 6168 states and 21584 transitions. [2021-07-09 17:46:46,507 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) [2021-07-09 17:46:46,507 INFO L276 IsEmpty]: Start isEmpty. Operand 6168 states and 21584 transitions. [2021-07-09 17:46:46,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:46:46,517 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:46:46,517 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:46:46,517 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-07-09 17:46:46,517 INFO L430 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:46:46,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:46:46,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1491577424, now seen corresponding path program 74 times [2021-07-09 17:46:46,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:46:46,517 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781349356] [2021-07-09 17:46:46,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:46:46,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:46:46,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:46:46,717 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:46:46,717 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781349356] [2021-07-09 17:46:46,717 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781349356] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:46:46,717 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:46:46,717 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:46:46,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569420973] [2021-07-09 17:46:46,717 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:46:46,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:46:46,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:46:46,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:46:46,718 INFO L87 Difference]: Start difference. First operand 6168 states and 21584 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) [2021-07-09 17:46:47,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:46:47,801 INFO L93 Difference]: Finished difference Result 6866 states and 23889 transitions. [2021-07-09 17:46:47,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-07-09 17:46:47,802 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 [2021-07-09 17:46:47,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:46:47,816 INFO L225 Difference]: With dead ends: 6866 [2021-07-09 17:46:47,816 INFO L226 Difference]: Without dead ends: 6761 [2021-07-09 17:46:47,817 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 694.4ms TimeCoverageRelationStatistics Valid=193, Invalid=1877, Unknown=0, NotChecked=0, Total=2070 [2021-07-09 17:46:47,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6761 states. [2021-07-09 17:46:47,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6761 to 6160. [2021-07-09 17:46:47,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6160 states, 6159 states have (on average 3.4999188179899337) internal successors, (21556), 6159 states have internal predecessors, (21556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:47,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6160 states to 6160 states and 21556 transitions. [2021-07-09 17:46:47,917 INFO L78 Accepts]: Start accepts. Automaton has 6160 states and 21556 transitions. Word has length 47 [2021-07-09 17:46:47,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:46:47,917 INFO L482 AbstractCegarLoop]: Abstraction has 6160 states and 21556 transitions. [2021-07-09 17:46:47,917 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) [2021-07-09 17:46:47,917 INFO L276 IsEmpty]: Start isEmpty. Operand 6160 states and 21556 transitions. [2021-07-09 17:46:47,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:46:47,926 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:46:47,927 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:46:47,927 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-07-09 17:46:47,927 INFO L430 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:46:47,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:46:47,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1530456164, now seen corresponding path program 75 times [2021-07-09 17:46:47,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:46:47,927 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029149888] [2021-07-09 17:46:47,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:46:47,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:46:48,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:46:48,135 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:46:48,135 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029149888] [2021-07-09 17:46:48,135 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029149888] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:46:48,135 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:46:48,135 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:46:48,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253617241] [2021-07-09 17:46:48,135 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:46:48,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:46:48,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:46:48,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:46:48,136 INFO L87 Difference]: Start difference. First operand 6160 states and 21556 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) [2021-07-09 17:46:49,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:46:49,249 INFO L93 Difference]: Finished difference Result 6767 states and 23590 transitions. [2021-07-09 17:46:49,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-07-09 17:46:49,249 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 [2021-07-09 17:46:49,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:46:49,263 INFO L225 Difference]: With dead ends: 6767 [2021-07-09 17:46:49,263 INFO L226 Difference]: Without dead ends: 6542 [2021-07-09 17:46:49,263 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 692.6ms TimeCoverageRelationStatistics Valid=187, Invalid=1793, Unknown=0, NotChecked=0, Total=1980 [2021-07-09 17:46:49,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6542 states. [2021-07-09 17:46:49,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6542 to 6080. [2021-07-09 17:46:49,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6080 states, 6079 states have (on average 3.5038657673959532) internal successors, (21300), 6079 states have internal predecessors, (21300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:49,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6080 states to 6080 states and 21300 transitions. [2021-07-09 17:46:49,361 INFO L78 Accepts]: Start accepts. Automaton has 6080 states and 21300 transitions. Word has length 47 [2021-07-09 17:46:49,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:46:49,361 INFO L482 AbstractCegarLoop]: Abstraction has 6080 states and 21300 transitions. [2021-07-09 17:46:49,361 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) [2021-07-09 17:46:49,361 INFO L276 IsEmpty]: Start isEmpty. Operand 6080 states and 21300 transitions. [2021-07-09 17:46:49,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:46:49,370 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:46:49,370 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:46:49,370 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-07-09 17:46:49,370 INFO L430 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:46:49,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:46:49,371 INFO L82 PathProgramCache]: Analyzing trace with hash -954128354, now seen corresponding path program 76 times [2021-07-09 17:46:49,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:46:49,371 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913626581] [2021-07-09 17:46:49,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:46:49,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:46:49,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:46:49,577 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:46:49,577 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913626581] [2021-07-09 17:46:49,577 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913626581] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:46:49,577 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:46:49,577 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:46:49,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934622729] [2021-07-09 17:46:49,578 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:46:49,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:46:49,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:46:49,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:46:49,578 INFO L87 Difference]: Start difference. First operand 6080 states and 21300 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) [2021-07-09 17:46:52,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:46:52,383 INFO L93 Difference]: Finished difference Result 9849 states and 34418 transitions. [2021-07-09 17:46:52,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-07-09 17:46:52,384 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 [2021-07-09 17:46:52,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:46:52,405 INFO L225 Difference]: With dead ends: 9849 [2021-07-09 17:46:52,405 INFO L226 Difference]: Without dead ends: 9712 [2021-07-09 17:46:52,406 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1589 ImplicationChecksByTransitivity, 1582.6ms TimeCoverageRelationStatistics Valid=467, Invalid=5083, Unknown=0, NotChecked=0, Total=5550 [2021-07-09 17:46:52,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9712 states. [2021-07-09 17:46:52,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9712 to 6118. [2021-07-09 17:46:52,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6118 states, 6117 states have (on average 3.5002452182442374) internal successors, (21411), 6117 states have internal predecessors, (21411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:52,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6118 states to 6118 states and 21411 transitions. [2021-07-09 17:46:52,529 INFO L78 Accepts]: Start accepts. Automaton has 6118 states and 21411 transitions. Word has length 47 [2021-07-09 17:46:52,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:46:52,529 INFO L482 AbstractCegarLoop]: Abstraction has 6118 states and 21411 transitions. [2021-07-09 17:46:52,529 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) [2021-07-09 17:46:52,529 INFO L276 IsEmpty]: Start isEmpty. Operand 6118 states and 21411 transitions. [2021-07-09 17:46:52,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:46:52,537 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:46:52,537 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:46:52,538 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-07-09 17:46:52,538 INFO L430 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:46:52,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:46:52,538 INFO L82 PathProgramCache]: Analyzing trace with hash -967659776, now seen corresponding path program 77 times [2021-07-09 17:46:52,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:46:52,538 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062551077] [2021-07-09 17:46:52,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:46:52,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:46:52,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:46:52,756 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:46:52,756 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062551077] [2021-07-09 17:46:52,756 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062551077] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:46:52,756 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:46:52,756 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:46:52,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860608287] [2021-07-09 17:46:52,756 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:46:52,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:46:52,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:46:52,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:46:52,756 INFO L87 Difference]: Start difference. First operand 6118 states and 21411 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:55,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:46:55,917 INFO L93 Difference]: Finished difference Result 10931 states and 38497 transitions. [2021-07-09 17:46:55,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-07-09 17:46:55,918 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:46:55,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:46:55,941 INFO L225 Difference]: With dead ends: 10931 [2021-07-09 17:46:55,942 INFO L226 Difference]: Without dead ends: 10842 [2021-07-09 17:46:55,942 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1953 ImplicationChecksByTransitivity, 1870.2ms TimeCoverageRelationStatistics Valid=594, Invalid=6048, Unknown=0, NotChecked=0, Total=6642 [2021-07-09 17:46:55,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10842 states. [2021-07-09 17:46:56,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10842 to 6122. [2021-07-09 17:46:56,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6122 states, 6121 states have (on average 3.499264826008822) internal successors, (21419), 6121 states have internal predecessors, (21419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:56,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6122 states to 6122 states and 21419 transitions. [2021-07-09 17:46:56,070 INFO L78 Accepts]: Start accepts. Automaton has 6122 states and 21419 transitions. Word has length 47 [2021-07-09 17:46:56,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:46:56,070 INFO L482 AbstractCegarLoop]: Abstraction has 6122 states and 21419 transitions. [2021-07-09 17:46:56,070 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:56,070 INFO L276 IsEmpty]: Start isEmpty. Operand 6122 states and 21419 transitions. [2021-07-09 17:46:56,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:46:56,079 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:46:56,079 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:46:56,080 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-07-09 17:46:56,080 INFO L430 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:46:56,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:46:56,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1818311684, now seen corresponding path program 78 times [2021-07-09 17:46:56,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:46:56,080 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813528772] [2021-07-09 17:46:56,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:46:56,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:46:56,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:46:56,310 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:46:56,311 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813528772] [2021-07-09 17:46:56,311 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813528772] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:46:56,311 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:46:56,311 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:46:56,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151728121] [2021-07-09 17:46:56,311 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:46:56,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:46:56,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:46:56,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:46:56,311 INFO L87 Difference]: Start difference. First operand 6122 states and 21419 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:59,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:46:59,440 INFO L93 Difference]: Finished difference Result 11010 states and 38913 transitions. [2021-07-09 17:46:59,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-07-09 17:46:59,440 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:46:59,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:46:59,465 INFO L225 Difference]: With dead ends: 11010 [2021-07-09 17:46:59,465 INFO L226 Difference]: Without dead ends: 10903 [2021-07-09 17:46:59,466 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1836 ImplicationChecksByTransitivity, 1770.3ms TimeCoverageRelationStatistics Valid=553, Invalid=5767, Unknown=0, NotChecked=0, Total=6320 [2021-07-09 17:46:59,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10903 states. [2021-07-09 17:46:59,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10903 to 6084. [2021-07-09 17:46:59,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6084 states, 6083 states have (on average 3.5025480848265658) internal successors, (21306), 6083 states have internal predecessors, (21306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:59,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6084 states to 6084 states and 21306 transitions. [2021-07-09 17:46:59,644 INFO L78 Accepts]: Start accepts. Automaton has 6084 states and 21306 transitions. Word has length 47 [2021-07-09 17:46:59,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:46:59,645 INFO L482 AbstractCegarLoop]: Abstraction has 6084 states and 21306 transitions. [2021-07-09 17:46:59,645 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:46:59,645 INFO L276 IsEmpty]: Start isEmpty. Operand 6084 states and 21306 transitions. [2021-07-09 17:46:59,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:46:59,653 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:46:59,653 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:46:59,653 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-07-09 17:46:59,653 INFO L430 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:46:59,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:46:59,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1917677824, now seen corresponding path program 79 times [2021-07-09 17:46:59,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:46:59,654 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984924024] [2021-07-09 17:46:59,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:46:59,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:46:59,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:46:59,874 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:46:59,874 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984924024] [2021-07-09 17:46:59,874 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984924024] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:46:59,874 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:46:59,874 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:46:59,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066343202] [2021-07-09 17:46:59,874 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:46:59,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:46:59,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:46:59,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:46:59,875 INFO L87 Difference]: Start difference. First operand 6084 states and 21306 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:01,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:47:01,078 INFO L93 Difference]: Finished difference Result 7050 states and 24382 transitions. [2021-07-09 17:47:01,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-07-09 17:47:01,078 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:47:01,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:47:01,093 INFO L225 Difference]: With dead ends: 7050 [2021-07-09 17:47:01,093 INFO L226 Difference]: Without dead ends: 6961 [2021-07-09 17:47:01,093 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 804.1ms TimeCoverageRelationStatistics Valid=219, Invalid=2133, Unknown=0, NotChecked=0, Total=2352 [2021-07-09 17:47:01,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6961 states. [2021-07-09 17:47:01,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6961 to 6094. [2021-07-09 17:47:01,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6094 states, 6093 states have (on average 3.501230920728705) internal successors, (21333), 6093 states have internal predecessors, (21333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:01,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6094 states to 6094 states and 21333 transitions. [2021-07-09 17:47:01,192 INFO L78 Accepts]: Start accepts. Automaton has 6094 states and 21333 transitions. Word has length 47 [2021-07-09 17:47:01,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:47:01,192 INFO L482 AbstractCegarLoop]: Abstraction has 6094 states and 21333 transitions. [2021-07-09 17:47:01,192 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:01,192 INFO L276 IsEmpty]: Start isEmpty. Operand 6094 states and 21333 transitions. [2021-07-09 17:47:01,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:47:01,201 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:47:01,201 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:47:01,201 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-07-09 17:47:01,202 INFO L430 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:47:01,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:47:01,202 INFO L82 PathProgramCache]: Analyzing trace with hash 2053627648, now seen corresponding path program 80 times [2021-07-09 17:47:01,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:47:01,202 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487192268] [2021-07-09 17:47:01,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:47:01,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:47:01,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:47:01,442 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:47:01,442 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487192268] [2021-07-09 17:47:01,442 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487192268] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:47:01,442 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:47:01,442 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:47:01,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952678837] [2021-07-09 17:47:01,442 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:47:01,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:47:01,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:47:01,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:47:01,443 INFO L87 Difference]: Start difference. First operand 6094 states and 21333 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:02,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:47:02,752 INFO L93 Difference]: Finished difference Result 6983 states and 24195 transitions. [2021-07-09 17:47:02,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-07-09 17:47:02,753 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:47:02,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:47:02,766 INFO L225 Difference]: With dead ends: 6983 [2021-07-09 17:47:02,766 INFO L226 Difference]: Without dead ends: 6862 [2021-07-09 17:47:02,767 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 558 ImplicationChecksByTransitivity, 916.3ms TimeCoverageRelationStatistics Valid=237, Invalid=2415, Unknown=0, NotChecked=0, Total=2652 [2021-07-09 17:47:02,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6862 states. [2021-07-09 17:47:02,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6862 to 6090. [2021-07-09 17:47:02,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6090 states, 6089 states have (on average 3.5012317293480044) internal successors, (21319), 6089 states have internal predecessors, (21319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:02,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6090 states to 6090 states and 21319 transitions. [2021-07-09 17:47:02,866 INFO L78 Accepts]: Start accepts. Automaton has 6090 states and 21319 transitions. Word has length 47 [2021-07-09 17:47:02,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:47:02,866 INFO L482 AbstractCegarLoop]: Abstraction has 6090 states and 21319 transitions. [2021-07-09 17:47:02,866 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:02,866 INFO L276 IsEmpty]: Start isEmpty. Operand 6090 states and 21319 transitions. [2021-07-09 17:47:02,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:47:02,875 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:47:02,876 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:47:02,876 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-07-09 17:47:02,876 INFO L430 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:47:02,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:47:02,876 INFO L82 PathProgramCache]: Analyzing trace with hash -346256388, now seen corresponding path program 81 times [2021-07-09 17:47:02,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:47:02,876 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128634113] [2021-07-09 17:47:02,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:47:02,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:47:03,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:47:03,107 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:47:03,107 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128634113] [2021-07-09 17:47:03,107 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128634113] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:47:03,107 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:47:03,107 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:47:03,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388412156] [2021-07-09 17:47:03,108 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:47:03,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:47:03,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:47:03,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:47:03,108 INFO L87 Difference]: Start difference. First operand 6090 states and 21319 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:04,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:47:04,731 INFO L93 Difference]: Finished difference Result 7659 states and 26554 transitions. [2021-07-09 17:47:04,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-07-09 17:47:04,731 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:47:04,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:47:04,747 INFO L225 Difference]: With dead ends: 7659 [2021-07-09 17:47:04,747 INFO L226 Difference]: Without dead ends: 7544 [2021-07-09 17:47:04,747 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 588 ImplicationChecksByTransitivity, 962.6ms TimeCoverageRelationStatistics Valid=243, Invalid=2513, Unknown=0, NotChecked=0, Total=2756 [2021-07-09 17:47:04,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7544 states. [2021-07-09 17:47:04,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7544 to 6202. [2021-07-09 17:47:04,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6202 states, 6201 states have (on average 3.4960490243509112) internal successors, (21679), 6201 states have internal predecessors, (21679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:04,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6202 states to 6202 states and 21679 transitions. [2021-07-09 17:47:04,898 INFO L78 Accepts]: Start accepts. Automaton has 6202 states and 21679 transitions. Word has length 47 [2021-07-09 17:47:04,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:47:04,898 INFO L482 AbstractCegarLoop]: Abstraction has 6202 states and 21679 transitions. [2021-07-09 17:47:04,898 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:04,898 INFO L276 IsEmpty]: Start isEmpty. Operand 6202 states and 21679 transitions. [2021-07-09 17:47:04,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:47:04,907 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:47:04,907 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:47:04,907 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-07-09 17:47:04,907 INFO L430 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:47:04,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:47:04,908 INFO L82 PathProgramCache]: Analyzing trace with hash -47364710, now seen corresponding path program 82 times [2021-07-09 17:47:04,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:47:04,908 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414668485] [2021-07-09 17:47:04,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:47:04,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:47:05,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:47:05,126 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:47:05,126 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414668485] [2021-07-09 17:47:05,126 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414668485] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:47:05,126 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:47:05,126 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:47:05,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832943904] [2021-07-09 17:47:05,126 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:47:05,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:47:05,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:47:05,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:47:05,126 INFO L87 Difference]: Start difference. First operand 6202 states and 21679 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:06,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:47:06,336 INFO L93 Difference]: Finished difference Result 7055 states and 24409 transitions. [2021-07-09 17:47:06,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-07-09 17:47:06,336 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:47:06,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:47:06,350 INFO L225 Difference]: With dead ends: 7055 [2021-07-09 17:47:06,351 INFO L226 Difference]: Without dead ends: 6958 [2021-07-09 17:47:06,351 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 779.3ms TimeCoverageRelationStatistics Valid=208, Invalid=2144, Unknown=0, NotChecked=0, Total=2352 [2021-07-09 17:47:06,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6958 states. [2021-07-09 17:47:06,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6958 to 6216. [2021-07-09 17:47:06,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6216 states, 6215 states have (on average 3.4925181013676587) internal successors, (21706), 6215 states have internal predecessors, (21706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:06,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6216 states to 6216 states and 21706 transitions. [2021-07-09 17:47:06,454 INFO L78 Accepts]: Start accepts. Automaton has 6216 states and 21706 transitions. Word has length 47 [2021-07-09 17:47:06,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:47:06,454 INFO L482 AbstractCegarLoop]: Abstraction has 6216 states and 21706 transitions. [2021-07-09 17:47:06,454 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:06,454 INFO L276 IsEmpty]: Start isEmpty. Operand 6216 states and 21706 transitions. [2021-07-09 17:47:06,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:47:06,463 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:47:06,464 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:47:06,464 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-07-09 17:47:06,464 INFO L430 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:47:06,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:47:06,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1772785220, now seen corresponding path program 83 times [2021-07-09 17:47:06,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:47:06,465 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708429456] [2021-07-09 17:47:06,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:47:06,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:47:06,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:47:06,681 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:47:06,681 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708429456] [2021-07-09 17:47:06,681 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708429456] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:47:06,681 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:47:06,682 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:47:06,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052394450] [2021-07-09 17:47:06,682 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:47:06,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:47:06,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:47:06,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:47:06,682 INFO L87 Difference]: Start difference. First operand 6216 states and 21706 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:07,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:47:07,843 INFO L93 Difference]: Finished difference Result 7031 states and 24319 transitions. [2021-07-09 17:47:07,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-07-09 17:47:07,844 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:47:07,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:47:07,858 INFO L225 Difference]: With dead ends: 7031 [2021-07-09 17:47:07,858 INFO L226 Difference]: Without dead ends: 6926 [2021-07-09 17:47:07,858 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 717.9ms TimeCoverageRelationStatistics Valid=187, Invalid=1883, Unknown=0, NotChecked=0, Total=2070 [2021-07-09 17:47:07,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6926 states. [2021-07-09 17:47:07,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6926 to 6202. [2021-07-09 17:47:07,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6202 states, 6201 states have (on average 3.4950814384776647) internal successors, (21673), 6201 states have internal predecessors, (21673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:07,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6202 states to 6202 states and 21673 transitions. [2021-07-09 17:47:07,959 INFO L78 Accepts]: Start accepts. Automaton has 6202 states and 21673 transitions. Word has length 47 [2021-07-09 17:47:07,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:47:07,959 INFO L482 AbstractCegarLoop]: Abstraction has 6202 states and 21673 transitions. [2021-07-09 17:47:07,959 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:07,959 INFO L276 IsEmpty]: Start isEmpty. Operand 6202 states and 21673 transitions. [2021-07-09 17:47:07,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:47:07,969 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:47:07,969 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:47:07,969 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-07-09 17:47:07,969 INFO L430 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:47:07,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:47:07,970 INFO L82 PathProgramCache]: Analyzing trace with hash 546782524, now seen corresponding path program 84 times [2021-07-09 17:47:07,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:47:07,970 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726892102] [2021-07-09 17:47:07,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:47:07,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:47:08,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:47:08,192 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:47:08,192 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726892102] [2021-07-09 17:47:08,192 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726892102] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:47:08,192 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:47:08,192 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:47:08,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690354491] [2021-07-09 17:47:08,192 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:47:08,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:47:08,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:47:08,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:47:08,193 INFO L87 Difference]: Start difference. First operand 6202 states and 21673 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:09,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:47:09,370 INFO L93 Difference]: Finished difference Result 6942 states and 24123 transitions. [2021-07-09 17:47:09,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-07-09 17:47:09,371 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:47:09,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:47:09,385 INFO L225 Difference]: With dead ends: 6942 [2021-07-09 17:47:09,385 INFO L226 Difference]: Without dead ends: 6853 [2021-07-09 17:47:09,386 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 829.1ms TimeCoverageRelationStatistics Valid=232, Invalid=2218, Unknown=0, NotChecked=0, Total=2450 [2021-07-09 17:47:09,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6853 states. [2021-07-09 17:47:09,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6853 to 6222. [2021-07-09 17:47:09,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6222 states, 6221 states have (on average 3.4950972512457805) internal successors, (21743), 6221 states have internal predecessors, (21743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:09,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6222 states to 6222 states and 21743 transitions. [2021-07-09 17:47:09,490 INFO L78 Accepts]: Start accepts. Automaton has 6222 states and 21743 transitions. Word has length 47 [2021-07-09 17:47:09,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:47:09,491 INFO L482 AbstractCegarLoop]: Abstraction has 6222 states and 21743 transitions. [2021-07-09 17:47:09,491 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:09,491 INFO L276 IsEmpty]: Start isEmpty. Operand 6222 states and 21743 transitions. [2021-07-09 17:47:09,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:47:09,500 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:47:09,500 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:47:09,500 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-07-09 17:47:09,500 INFO L430 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:47:09,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:47:09,501 INFO L82 PathProgramCache]: Analyzing trace with hash 223120700, now seen corresponding path program 85 times [2021-07-09 17:47:09,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:47:09,501 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879069395] [2021-07-09 17:47:09,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:47:09,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:47:09,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:47:09,729 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:47:09,729 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879069395] [2021-07-09 17:47:09,729 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879069395] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:47:09,729 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:47:09,729 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:47:09,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780057105] [2021-07-09 17:47:09,729 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:47:09,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:47:09,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:47:09,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:47:09,730 INFO L87 Difference]: Start difference. First operand 6222 states and 21743 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:10,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:47:10,980 INFO L93 Difference]: Finished difference Result 6970 states and 24211 transitions. [2021-07-09 17:47:10,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-07-09 17:47:10,980 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:47:10,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:47:10,994 INFO L225 Difference]: With dead ends: 6970 [2021-07-09 17:47:10,994 INFO L226 Difference]: Without dead ends: 6841 [2021-07-09 17:47:10,995 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 854.2ms TimeCoverageRelationStatistics Valid=234, Invalid=2316, Unknown=0, NotChecked=0, Total=2550 [2021-07-09 17:47:11,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6841 states. [2021-07-09 17:47:11,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6841 to 6224. [2021-07-09 17:47:11,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6224 states, 6223 states have (on average 3.4934918849429537) internal successors, (21740), 6223 states have internal predecessors, (21740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:11,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6224 states to 6224 states and 21740 transitions. [2021-07-09 17:47:11,099 INFO L78 Accepts]: Start accepts. Automaton has 6224 states and 21740 transitions. Word has length 47 [2021-07-09 17:47:11,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:47:11,099 INFO L482 AbstractCegarLoop]: Abstraction has 6224 states and 21740 transitions. [2021-07-09 17:47:11,099 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:11,099 INFO L276 IsEmpty]: Start isEmpty. Operand 6224 states and 21740 transitions. [2021-07-09 17:47:11,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:47:11,109 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:47:11,109 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:47:11,109 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-07-09 17:47:11,109 INFO L430 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:47:11,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:47:11,109 INFO L82 PathProgramCache]: Analyzing trace with hash 279232154, now seen corresponding path program 86 times [2021-07-09 17:47:11,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:47:11,109 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541460083] [2021-07-09 17:47:11,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:47:11,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:47:11,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:47:11,333 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:47:11,333 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541460083] [2021-07-09 17:47:11,333 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541460083] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:47:11,333 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:47:11,333 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:47:11,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540245093] [2021-07-09 17:47:11,333 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:47:11,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:47:11,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:47:11,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:47:11,334 INFO L87 Difference]: Start difference. First operand 6224 states and 21740 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:12,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:47:12,559 INFO L93 Difference]: Finished difference Result 6907 states and 24038 transitions. [2021-07-09 17:47:12,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-07-09 17:47:12,559 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:47:12,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:47:12,573 INFO L225 Difference]: With dead ends: 6907 [2021-07-09 17:47:12,573 INFO L226 Difference]: Without dead ends: 6746 [2021-07-09 17:47:12,573 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 825.9ms TimeCoverageRelationStatistics Valid=231, Invalid=2219, Unknown=0, NotChecked=0, Total=2450 [2021-07-09 17:47:12,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6746 states. [2021-07-09 17:47:12,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6746 to 6208. [2021-07-09 17:47:12,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6208 states, 6207 states have (on average 3.4941195424520703) internal successors, (21688), 6207 states have internal predecessors, (21688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:12,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6208 states to 6208 states and 21688 transitions. [2021-07-09 17:47:12,695 INFO L78 Accepts]: Start accepts. Automaton has 6208 states and 21688 transitions. Word has length 47 [2021-07-09 17:47:12,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:47:12,695 INFO L482 AbstractCegarLoop]: Abstraction has 6208 states and 21688 transitions. [2021-07-09 17:47:12,695 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:12,695 INFO L276 IsEmpty]: Start isEmpty. Operand 6208 states and 21688 transitions. [2021-07-09 17:47:12,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:47:12,704 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:47:12,705 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:47:12,705 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-07-09 17:47:12,705 INFO L430 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:47:12,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:47:12,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1519137476, now seen corresponding path program 87 times [2021-07-09 17:47:12,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:47:12,705 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547841213] [2021-07-09 17:47:12,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:47:12,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:47:12,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:47:12,933 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:47:12,933 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547841213] [2021-07-09 17:47:12,933 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547841213] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:47:12,933 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:47:12,933 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:47:12,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756245402] [2021-07-09 17:47:12,933 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:47:12,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:47:12,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:47:12,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:47:12,933 INFO L87 Difference]: Start difference. First operand 6208 states and 21688 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:14,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:47:14,832 INFO L93 Difference]: Finished difference Result 8257 states and 28674 transitions. [2021-07-09 17:47:14,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-07-09 17:47:14,833 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:47:14,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:47:14,850 INFO L225 Difference]: With dead ends: 8257 [2021-07-09 17:47:14,850 INFO L226 Difference]: Without dead ends: 8060 [2021-07-09 17:47:14,851 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 921 ImplicationChecksByTransitivity, 1085.1ms TimeCoverageRelationStatistics Valid=321, Invalid=3461, Unknown=0, NotChecked=0, Total=3782 [2021-07-09 17:47:14,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8060 states. [2021-07-09 17:47:14,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8060 to 6144. [2021-07-09 17:47:14,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6144 states, 6143 states have (on average 3.49894188507244) internal successors, (21494), 6143 states have internal predecessors, (21494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:14,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6144 states to 6144 states and 21494 transitions. [2021-07-09 17:47:14,958 INFO L78 Accepts]: Start accepts. Automaton has 6144 states and 21494 transitions. Word has length 47 [2021-07-09 17:47:14,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:47:14,959 INFO L482 AbstractCegarLoop]: Abstraction has 6144 states and 21494 transitions. [2021-07-09 17:47:14,959 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:14,959 INFO L276 IsEmpty]: Start isEmpty. Operand 6144 states and 21494 transitions. [2021-07-09 17:47:14,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:47:14,967 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:47:14,967 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:47:14,967 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-07-09 17:47:14,968 INFO L430 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:47:14,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:47:14,968 INFO L82 PathProgramCache]: Analyzing trace with hash 2000712218, now seen corresponding path program 88 times [2021-07-09 17:47:14,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:47:14,968 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949349294] [2021-07-09 17:47:14,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:47:14,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:47:15,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:47:15,222 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:47:15,222 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949349294] [2021-07-09 17:47:15,223 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949349294] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:47:15,223 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:47:15,223 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:47:15,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907923992] [2021-07-09 17:47:15,223 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:47:15,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:47:15,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:47:15,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:47:15,223 INFO L87 Difference]: Start difference. First operand 6144 states and 21494 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:17,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:47:17,029 INFO L93 Difference]: Finished difference Result 8151 states and 28335 transitions. [2021-07-09 17:47:17,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-07-09 17:47:17,029 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:47:17,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:47:17,046 INFO L225 Difference]: With dead ends: 8151 [2021-07-09 17:47:17,046 INFO L226 Difference]: Without dead ends: 8056 [2021-07-09 17:47:17,047 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 879 ImplicationChecksByTransitivity, 1088.5ms TimeCoverageRelationStatistics Valid=313, Invalid=3347, Unknown=0, NotChecked=0, Total=3660 [2021-07-09 17:47:17,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8056 states. [2021-07-09 17:47:17,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8056 to 6132. [2021-07-09 17:47:17,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6132 states, 6131 states have (on average 3.500897080411026) internal successors, (21464), 6131 states have internal predecessors, (21464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:17,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6132 states to 6132 states and 21464 transitions. [2021-07-09 17:47:17,156 INFO L78 Accepts]: Start accepts. Automaton has 6132 states and 21464 transitions. Word has length 47 [2021-07-09 17:47:17,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:47:17,156 INFO L482 AbstractCegarLoop]: Abstraction has 6132 states and 21464 transitions. [2021-07-09 17:47:17,156 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:17,156 INFO L276 IsEmpty]: Start isEmpty. Operand 6132 states and 21464 transitions. [2021-07-09 17:47:17,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:47:17,165 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:47:17,165 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:47:17,165 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-07-09 17:47:17,165 INFO L430 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:47:17,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:47:17,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1995363400, now seen corresponding path program 89 times [2021-07-09 17:47:17,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:47:17,165 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652741163] [2021-07-09 17:47:17,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:47:17,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:47:17,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:47:17,384 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:47:17,384 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652741163] [2021-07-09 17:47:17,384 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652741163] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:47:17,384 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:47:17,384 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:47:17,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364832275] [2021-07-09 17:47:17,385 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:47:17,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:47:17,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:47:17,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:47:17,385 INFO L87 Difference]: Start difference. First operand 6132 states and 21464 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:18,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:47:18,586 INFO L93 Difference]: Finished difference Result 7016 states and 24295 transitions. [2021-07-09 17:47:18,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-07-09 17:47:18,586 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:47:18,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:47:18,600 INFO L225 Difference]: With dead ends: 7016 [2021-07-09 17:47:18,600 INFO L226 Difference]: Without dead ends: 6919 [2021-07-09 17:47:18,601 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 791.5ms TimeCoverageRelationStatistics Valid=221, Invalid=2131, Unknown=0, NotChecked=0, Total=2352 [2021-07-09 17:47:18,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6919 states. [2021-07-09 17:47:18,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6919 to 6144. [2021-07-09 17:47:18,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6144 states, 6143 states have (on average 3.4986163112485755) internal successors, (21492), 6143 states have internal predecessors, (21492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:18,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6144 states to 6144 states and 21492 transitions. [2021-07-09 17:47:18,699 INFO L78 Accepts]: Start accepts. Automaton has 6144 states and 21492 transitions. Word has length 47 [2021-07-09 17:47:18,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:47:18,699 INFO L482 AbstractCegarLoop]: Abstraction has 6144 states and 21492 transitions. [2021-07-09 17:47:18,699 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:18,699 INFO L276 IsEmpty]: Start isEmpty. Operand 6144 states and 21492 transitions. [2021-07-09 17:47:18,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:47:18,708 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:47:18,708 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:47:18,708 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-07-09 17:47:18,708 INFO L430 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:47:18,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:47:18,708 INFO L82 PathProgramCache]: Analyzing trace with hash 574183386, now seen corresponding path program 90 times [2021-07-09 17:47:18,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:47:18,708 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575765283] [2021-07-09 17:47:18,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:47:18,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:47:18,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:47:18,923 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:47:18,923 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575765283] [2021-07-09 17:47:18,923 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575765283] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:47:18,923 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:47:18,923 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:47:18,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835062774] [2021-07-09 17:47:18,923 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:47:18,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:47:18,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:47:18,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:47:18,924 INFO L87 Difference]: Start difference. First operand 6144 states and 21492 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:20,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:47:20,012 INFO L93 Difference]: Finished difference Result 6992 states and 24205 transitions. [2021-07-09 17:47:20,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-07-09 17:47:20,012 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:47:20,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:47:20,027 INFO L225 Difference]: With dead ends: 6992 [2021-07-09 17:47:20,027 INFO L226 Difference]: Without dead ends: 6893 [2021-07-09 17:47:20,027 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 723.5ms TimeCoverageRelationStatistics Valid=202, Invalid=1960, Unknown=0, NotChecked=0, Total=2162 [2021-07-09 17:47:20,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6893 states. [2021-07-09 17:47:20,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6893 to 6136. [2021-07-09 17:47:20,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6136 states, 6135 states have (on average 3.4999185004074977) internal successors, (21472), 6135 states have internal predecessors, (21472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:20,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6136 states to 6136 states and 21472 transitions. [2021-07-09 17:47:20,127 INFO L78 Accepts]: Start accepts. Automaton has 6136 states and 21472 transitions. Word has length 47 [2021-07-09 17:47:20,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:47:20,127 INFO L482 AbstractCegarLoop]: Abstraction has 6136 states and 21472 transitions. [2021-07-09 17:47:20,127 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:20,127 INFO L276 IsEmpty]: Start isEmpty. Operand 6136 states and 21472 transitions. [2021-07-09 17:47:20,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:47:20,136 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:47:20,136 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:47:20,136 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-07-09 17:47:20,136 INFO L430 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:47:20,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:47:20,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1649927950, now seen corresponding path program 91 times [2021-07-09 17:47:20,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:47:20,136 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090461635] [2021-07-09 17:47:20,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:47:20,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:47:20,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:47:20,397 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:47:20,397 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090461635] [2021-07-09 17:47:20,397 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090461635] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:47:20,397 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:47:20,397 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:47:20,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958041117] [2021-07-09 17:47:20,397 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:47:20,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:47:20,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:47:20,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:47:20,397 INFO L87 Difference]: Start difference. First operand 6136 states and 21472 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:21,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:47:21,681 INFO L93 Difference]: Finished difference Result 6771 states and 23602 transitions. [2021-07-09 17:47:21,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-07-09 17:47:21,682 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:47:21,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:47:21,698 INFO L225 Difference]: With dead ends: 6771 [2021-07-09 17:47:21,698 INFO L226 Difference]: Without dead ends: 6626 [2021-07-09 17:47:21,698 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 895.0ms TimeCoverageRelationStatistics Valid=211, Invalid=2045, Unknown=0, NotChecked=0, Total=2256 [2021-07-09 17:47:21,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6626 states. [2021-07-09 17:47:21,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6626 to 6148. [2021-07-09 17:47:21,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6148 states, 6147 states have (on average 3.497966487717586) internal successors, (21502), 6147 states have internal predecessors, (21502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:21,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6148 states to 6148 states and 21502 transitions. [2021-07-09 17:47:21,805 INFO L78 Accepts]: Start accepts. Automaton has 6148 states and 21502 transitions. Word has length 47 [2021-07-09 17:47:21,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:47:21,805 INFO L482 AbstractCegarLoop]: Abstraction has 6148 states and 21502 transitions. [2021-07-09 17:47:21,805 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:21,805 INFO L276 IsEmpty]: Start isEmpty. Operand 6148 states and 21502 transitions. [2021-07-09 17:47:21,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:47:21,815 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:47:21,816 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:47:21,816 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-07-09 17:47:21,816 INFO L430 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:47:21,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:47:21,816 INFO L82 PathProgramCache]: Analyzing trace with hash -293524756, now seen corresponding path program 92 times [2021-07-09 17:47:21,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:47:21,816 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230950791] [2021-07-09 17:47:21,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:47:21,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:47:22,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:47:22,063 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:47:22,063 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230950791] [2021-07-09 17:47:22,063 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230950791] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:47:22,063 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:47:22,063 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:47:22,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541257801] [2021-07-09 17:47:22,063 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:47:22,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:47:22,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:47:22,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:47:22,064 INFO L87 Difference]: Start difference. First operand 6148 states and 21502 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:23,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:47:23,209 INFO L93 Difference]: Finished difference Result 6867 states and 23829 transitions. [2021-07-09 17:47:23,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-07-09 17:47:23,209 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:47:23,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:47:23,224 INFO L225 Difference]: With dead ends: 6867 [2021-07-09 17:47:23,224 INFO L226 Difference]: Without dead ends: 6770 [2021-07-09 17:47:23,224 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 792.5ms TimeCoverageRelationStatistics Valid=196, Invalid=1874, Unknown=0, NotChecked=0, Total=2070 [2021-07-09 17:47:23,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6770 states. [2021-07-09 17:47:23,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6770 to 6154. [2021-07-09 17:47:23,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6154 states, 6153 states have (on average 3.49699333658378) internal successors, (21517), 6153 states have internal predecessors, (21517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:23,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6154 states to 6154 states and 21517 transitions. [2021-07-09 17:47:23,322 INFO L78 Accepts]: Start accepts. Automaton has 6154 states and 21517 transitions. Word has length 47 [2021-07-09 17:47:23,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:47:23,322 INFO L482 AbstractCegarLoop]: Abstraction has 6154 states and 21517 transitions. [2021-07-09 17:47:23,322 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:23,322 INFO L276 IsEmpty]: Start isEmpty. Operand 6154 states and 21517 transitions. [2021-07-09 17:47:23,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:47:23,332 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:47:23,332 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:47:23,332 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-07-09 17:47:23,332 INFO L430 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:47:23,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:47:23,332 INFO L82 PathProgramCache]: Analyzing trace with hash -2018945266, now seen corresponding path program 93 times [2021-07-09 17:47:23,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:47:23,332 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978797432] [2021-07-09 17:47:23,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:47:23,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:47:23,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:47:23,549 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:47:23,549 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978797432] [2021-07-09 17:47:23,549 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978797432] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:47:23,549 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:47:23,549 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:47:23,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303665681] [2021-07-09 17:47:23,550 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:47:23,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:47:23,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:47:23,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:47:23,550 INFO L87 Difference]: Start difference. First operand 6154 states and 21517 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:24,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:47:24,594 INFO L93 Difference]: Finished difference Result 6768 states and 23524 transitions. [2021-07-09 17:47:24,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-07-09 17:47:24,595 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:47:24,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:47:24,609 INFO L225 Difference]: With dead ends: 6768 [2021-07-09 17:47:24,609 INFO L226 Difference]: Without dead ends: 6639 [2021-07-09 17:47:24,610 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 696.0ms TimeCoverageRelationStatistics Valid=187, Invalid=1793, Unknown=0, NotChecked=0, Total=1980 [2021-07-09 17:47:24,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6639 states. [2021-07-09 17:47:24,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6639 to 6116. [2021-07-09 17:47:24,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6116 states, 6115 states have (on average 3.504170073589534) internal successors, (21428), 6115 states have internal predecessors, (21428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:24,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6116 states to 6116 states and 21428 transitions. [2021-07-09 17:47:24,711 INFO L78 Accepts]: Start accepts. Automaton has 6116 states and 21428 transitions. Word has length 47 [2021-07-09 17:47:24,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:47:24,711 INFO L482 AbstractCegarLoop]: Abstraction has 6116 states and 21428 transitions. [2021-07-09 17:47:24,711 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:24,712 INFO L276 IsEmpty]: Start isEmpty. Operand 6116 states and 21428 transitions. [2021-07-09 17:47:24,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:47:24,721 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:47:24,721 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:47:24,721 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-07-09 17:47:24,721 INFO L430 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:47:24,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:47:24,721 INFO L82 PathProgramCache]: Analyzing trace with hash -2040827746, now seen corresponding path program 94 times [2021-07-09 17:47:24,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:47:24,721 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958305390] [2021-07-09 17:47:24,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:47:24,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:47:24,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:47:24,908 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:47:24,908 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958305390] [2021-07-09 17:47:24,908 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958305390] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:47:24,908 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:47:24,908 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 17:47:24,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268465171] [2021-07-09 17:47:24,908 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 17:47:24,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:47:24,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 17:47:24,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-07-09 17:47:24,909 INFO L87 Difference]: Start difference. First operand 6116 states and 21428 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) [2021-07-09 17:47:25,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:47:25,821 INFO L93 Difference]: Finished difference Result 6669 states and 23239 transitions. [2021-07-09 17:47:25,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-09 17:47:25,821 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 [2021-07-09 17:47:25,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:47:25,835 INFO L225 Difference]: With dead ends: 6669 [2021-07-09 17:47:25,835 INFO L226 Difference]: Without dead ends: 6532 [2021-07-09 17:47:25,835 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 553.8ms TimeCoverageRelationStatistics Valid=146, Invalid=1260, Unknown=0, NotChecked=0, Total=1406 [2021-07-09 17:47:25,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6532 states. [2021-07-09 17:47:25,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6532 to 6132. [2021-07-09 17:47:25,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6132 states, 6131 states have (on average 3.5028543467623554) internal successors, (21476), 6131 states have internal predecessors, (21476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:25,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6132 states to 6132 states and 21476 transitions. [2021-07-09 17:47:25,930 INFO L78 Accepts]: Start accepts. Automaton has 6132 states and 21476 transitions. Word has length 47 [2021-07-09 17:47:25,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:47:25,931 INFO L482 AbstractCegarLoop]: Abstraction has 6132 states and 21476 transitions. [2021-07-09 17:47:25,931 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) [2021-07-09 17:47:25,931 INFO L276 IsEmpty]: Start isEmpty. Operand 6132 states and 21476 transitions. [2021-07-09 17:47:25,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:47:25,940 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:47:25,940 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:47:25,940 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-07-09 17:47:25,940 INFO L430 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:47:25,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:47:25,940 INFO L82 PathProgramCache]: Analyzing trace with hash -523131524, now seen corresponding path program 95 times [2021-07-09 17:47:25,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:47:25,940 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106662379] [2021-07-09 17:47:25,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:47:25,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:47:26,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:47:26,140 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:47:26,140 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106662379] [2021-07-09 17:47:26,140 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106662379] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:47:26,140 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:47:26,140 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:47:26,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103932716] [2021-07-09 17:47:26,140 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:47:26,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:47:26,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:47:26,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:47:26,141 INFO L87 Difference]: Start difference. First operand 6132 states and 21476 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) [2021-07-09 17:47:27,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:47:27,072 INFO L93 Difference]: Finished difference Result 6728 states and 23398 transitions. [2021-07-09 17:47:27,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-07-09 17:47:27,073 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 [2021-07-09 17:47:27,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:47:27,087 INFO L225 Difference]: With dead ends: 6728 [2021-07-09 17:47:27,087 INFO L226 Difference]: Without dead ends: 6639 [2021-07-09 17:47:27,087 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 609.9ms TimeCoverageRelationStatistics Valid=162, Invalid=1478, Unknown=0, NotChecked=0, Total=1640 [2021-07-09 17:47:27,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6639 states. [2021-07-09 17:47:27,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6639 to 6196. [2021-07-09 17:47:27,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6196 states, 6195 states have (on average 3.5015334947538337) internal successors, (21692), 6195 states have internal predecessors, (21692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:27,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6196 states to 6196 states and 21692 transitions. [2021-07-09 17:47:27,190 INFO L78 Accepts]: Start accepts. Automaton has 6196 states and 21692 transitions. Word has length 47 [2021-07-09 17:47:27,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:47:27,190 INFO L482 AbstractCegarLoop]: Abstraction has 6196 states and 21692 transitions. [2021-07-09 17:47:27,190 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) [2021-07-09 17:47:27,190 INFO L276 IsEmpty]: Start isEmpty. Operand 6196 states and 21692 transitions. [2021-07-09 17:47:27,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:47:27,200 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:47:27,200 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:47:27,200 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-07-09 17:47:27,200 INFO L430 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:47:27,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:47:27,200 INFO L82 PathProgramCache]: Analyzing trace with hash -89102178, now seen corresponding path program 96 times [2021-07-09 17:47:27,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:47:27,200 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136446582] [2021-07-09 17:47:27,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:47:27,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:47:27,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:47:27,401 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:47:27,402 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136446582] [2021-07-09 17:47:27,402 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136446582] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:47:27,402 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:47:27,402 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:47:27,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969358120] [2021-07-09 17:47:27,402 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:47:27,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:47:27,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:47:27,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:47:27,402 INFO L87 Difference]: Start difference. First operand 6196 states and 21692 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) [2021-07-09 17:47:28,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:47:28,373 INFO L93 Difference]: Finished difference Result 6637 states and 23127 transitions. [2021-07-09 17:47:28,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-07-09 17:47:28,374 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 [2021-07-09 17:47:28,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:47:28,387 INFO L225 Difference]: With dead ends: 6637 [2021-07-09 17:47:28,388 INFO L226 Difference]: Without dead ends: 6508 [2021-07-09 17:47:28,388 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 594.5ms TimeCoverageRelationStatistics Valid=154, Invalid=1406, Unknown=0, NotChecked=0, Total=1560 [2021-07-09 17:47:28,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6508 states. [2021-07-09 17:47:28,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6508 to 6196. [2021-07-09 17:47:28,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6196 states, 6195 states have (on average 3.4976594027441483) internal successors, (21668), 6195 states have internal predecessors, (21668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:28,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6196 states to 6196 states and 21668 transitions. [2021-07-09 17:47:28,493 INFO L78 Accepts]: Start accepts. Automaton has 6196 states and 21668 transitions. Word has length 47 [2021-07-09 17:47:28,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:47:28,493 INFO L482 AbstractCegarLoop]: Abstraction has 6196 states and 21668 transitions. [2021-07-09 17:47:28,493 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) [2021-07-09 17:47:28,493 INFO L276 IsEmpty]: Start isEmpty. Operand 6196 states and 21668 transitions. [2021-07-09 17:47:28,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:47:28,503 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:47:28,503 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:47:28,503 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-07-09 17:47:28,503 INFO L430 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:47:28,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:47:28,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1472331308, now seen corresponding path program 97 times [2021-07-09 17:47:28,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:47:28,503 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377764586] [2021-07-09 17:47:28,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:47:28,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:47:28,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:47:28,703 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:47:28,703 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377764586] [2021-07-09 17:47:28,704 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377764586] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:47:28,704 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:47:28,704 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:47:28,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966942651] [2021-07-09 17:47:28,704 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:47:28,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:47:28,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:47:28,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:47:28,704 INFO L87 Difference]: Start difference. First operand 6196 states and 21668 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) [2021-07-09 17:47:29,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:47:29,674 INFO L93 Difference]: Finished difference Result 6680 states and 23238 transitions. [2021-07-09 17:47:29,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-07-09 17:47:29,675 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 [2021-07-09 17:47:29,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:47:29,688 INFO L225 Difference]: With dead ends: 6680 [2021-07-09 17:47:29,689 INFO L226 Difference]: Without dead ends: 6591 [2021-07-09 17:47:29,689 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 640.4ms TimeCoverageRelationStatistics Valid=171, Invalid=1551, Unknown=0, NotChecked=0, Total=1722 [2021-07-09 17:47:29,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6591 states. [2021-07-09 17:47:29,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6591 to 6196. [2021-07-09 17:47:29,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6196 states, 6195 states have (on average 3.4976594027441483) internal successors, (21668), 6195 states have internal predecessors, (21668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:29,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6196 states to 6196 states and 21668 transitions. [2021-07-09 17:47:29,786 INFO L78 Accepts]: Start accepts. Automaton has 6196 states and 21668 transitions. Word has length 47 [2021-07-09 17:47:29,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:47:29,787 INFO L482 AbstractCegarLoop]: Abstraction has 6196 states and 21668 transitions. [2021-07-09 17:47:29,787 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) [2021-07-09 17:47:29,787 INFO L276 IsEmpty]: Start isEmpty. Operand 6196 states and 21668 transitions. [2021-07-09 17:47:29,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:47:29,796 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:47:29,796 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:47:29,796 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-07-09 17:47:29,796 INFO L430 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:47:29,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:47:29,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1906360654, now seen corresponding path program 98 times [2021-07-09 17:47:29,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:47:29,797 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516856130] [2021-07-09 17:47:29,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:47:29,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:47:29,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:47:29,996 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:47:29,997 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516856130] [2021-07-09 17:47:29,997 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516856130] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:47:29,997 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:47:29,997 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:47:29,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069094311] [2021-07-09 17:47:29,997 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:47:29,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:47:29,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:47:29,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:47:29,997 INFO L87 Difference]: Start difference. First operand 6196 states and 21668 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) [2021-07-09 17:47:30,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:47:30,953 INFO L93 Difference]: Finished difference Result 6688 states and 23266 transitions. [2021-07-09 17:47:30,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-07-09 17:47:30,953 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 [2021-07-09 17:47:30,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:47:30,966 INFO L225 Difference]: With dead ends: 6688 [2021-07-09 17:47:30,967 INFO L226 Difference]: Without dead ends: 6583 [2021-07-09 17:47:30,967 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 620.3ms TimeCoverageRelationStatistics Valid=166, Invalid=1474, Unknown=0, NotChecked=0, Total=1640 [2021-07-09 17:47:30,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6583 states. [2021-07-09 17:47:31,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6583 to 6212. [2021-07-09 17:47:31,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6212 states, 6211 states have (on average 3.4963773949444534) internal successors, (21716), 6211 states have internal predecessors, (21716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:31,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6212 states to 6212 states and 21716 transitions. [2021-07-09 17:47:31,065 INFO L78 Accepts]: Start accepts. Automaton has 6212 states and 21716 transitions. Word has length 47 [2021-07-09 17:47:31,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:47:31,066 INFO L482 AbstractCegarLoop]: Abstraction has 6212 states and 21716 transitions. [2021-07-09 17:47:31,066 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) [2021-07-09 17:47:31,066 INFO L276 IsEmpty]: Start isEmpty. Operand 6212 states and 21716 transitions. [2021-07-09 17:47:31,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:47:31,075 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:47:31,075 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:47:31,075 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-07-09 17:47:31,076 INFO L430 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:47:31,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:47:31,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1115672934, now seen corresponding path program 99 times [2021-07-09 17:47:31,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:47:31,076 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689163121] [2021-07-09 17:47:31,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:47:31,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:47:31,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:47:31,277 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:47:31,277 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689163121] [2021-07-09 17:47:31,277 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689163121] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:47:31,277 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:47:31,277 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:47:31,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841487837] [2021-07-09 17:47:31,277 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:47:31,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:47:31,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:47:31,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:47:31,277 INFO L87 Difference]: Start difference. First operand 6212 states and 21716 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) [2021-07-09 17:47:32,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:47:32,229 INFO L93 Difference]: Finished difference Result 6605 states and 23015 transitions. [2021-07-09 17:47:32,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-07-09 17:47:32,230 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 [2021-07-09 17:47:32,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:47:32,243 INFO L225 Difference]: With dead ends: 6605 [2021-07-09 17:47:32,243 INFO L226 Difference]: Without dead ends: 6352 [2021-07-09 17:47:32,244 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 608.4ms TimeCoverageRelationStatistics Valid=163, Invalid=1477, Unknown=0, NotChecked=0, Total=1640 [2021-07-09 17:47:32,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6352 states. [2021-07-09 17:47:32,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6352 to 6104. [2021-07-09 17:47:32,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6104 states, 6103 states have (on average 3.5058168114042276) internal successors, (21396), 6103 states have internal predecessors, (21396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:32,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6104 states to 6104 states and 21396 transitions. [2021-07-09 17:47:32,337 INFO L78 Accepts]: Start accepts. Automaton has 6104 states and 21396 transitions. Word has length 47 [2021-07-09 17:47:32,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:47:32,337 INFO L482 AbstractCegarLoop]: Abstraction has 6104 states and 21396 transitions. [2021-07-09 17:47:32,337 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) [2021-07-09 17:47:32,337 INFO L276 IsEmpty]: Start isEmpty. Operand 6104 states and 21396 transitions. [2021-07-09 17:47:32,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:47:32,346 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:47:32,346 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:47:32,346 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-07-09 17:47:32,346 INFO L430 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:47:32,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:47:32,347 INFO L82 PathProgramCache]: Analyzing trace with hash 851399496, now seen corresponding path program 100 times [2021-07-09 17:47:32,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:47:32,347 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703346915] [2021-07-09 17:47:32,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:47:32,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:47:32,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:47:32,538 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:47:32,538 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703346915] [2021-07-09 17:47:32,538 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703346915] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:47:32,538 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:47:32,538 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 17:47:32,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132369945] [2021-07-09 17:47:32,538 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 17:47:32,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:47:32,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 17:47:32,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-07-09 17:47:32,539 INFO L87 Difference]: Start difference. First operand 6104 states and 21396 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) [2021-07-09 17:47:33,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:47:33,401 INFO L93 Difference]: Finished difference Result 6681 states and 23265 transitions. [2021-07-09 17:47:33,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-09 17:47:33,401 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 [2021-07-09 17:47:33,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:47:33,416 INFO L225 Difference]: With dead ends: 6681 [2021-07-09 17:47:33,416 INFO L226 Difference]: Without dead ends: 6544 [2021-07-09 17:47:33,416 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 554.7ms TimeCoverageRelationStatistics Valid=133, Invalid=1199, Unknown=0, NotChecked=0, Total=1332 [2021-07-09 17:47:33,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6544 states. [2021-07-09 17:47:33,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6544 to 6160. [2021-07-09 17:47:33,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6160 states, 6159 states have (on average 3.5012177301509984) internal successors, (21564), 6159 states have internal predecessors, (21564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:33,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6160 states to 6160 states and 21564 transitions. [2021-07-09 17:47:33,519 INFO L78 Accepts]: Start accepts. Automaton has 6160 states and 21564 transitions. Word has length 47 [2021-07-09 17:47:33,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:47:33,519 INFO L482 AbstractCegarLoop]: Abstraction has 6160 states and 21564 transitions. [2021-07-09 17:47:33,519 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) [2021-07-09 17:47:33,519 INFO L276 IsEmpty]: Start isEmpty. Operand 6160 states and 21564 transitions. [2021-07-09 17:47:33,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:47:33,529 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:47:33,529 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:47:33,529 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-07-09 17:47:33,529 INFO L430 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:47:33,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:47:33,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1568967496, now seen corresponding path program 101 times [2021-07-09 17:47:33,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:47:33,529 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411103730] [2021-07-09 17:47:33,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:47:33,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:47:33,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:47:33,728 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:47:33,728 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411103730] [2021-07-09 17:47:33,729 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411103730] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:47:33,729 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:47:33,729 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:47:33,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721570838] [2021-07-09 17:47:33,729 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:47:33,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:47:33,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:47:33,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:47:33,729 INFO L87 Difference]: Start difference. First operand 6160 states and 21564 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) [2021-07-09 17:47:34,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:47:34,614 INFO L93 Difference]: Finished difference Result 6740 states and 23424 transitions. [2021-07-09 17:47:34,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-07-09 17:47:34,614 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 [2021-07-09 17:47:34,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:47:34,628 INFO L225 Difference]: With dead ends: 6740 [2021-07-09 17:47:34,628 INFO L226 Difference]: Without dead ends: 6651 [2021-07-09 17:47:34,629 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 585.9ms TimeCoverageRelationStatistics Valid=149, Invalid=1411, Unknown=0, NotChecked=0, Total=1560 [2021-07-09 17:47:34,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6651 states. [2021-07-09 17:47:34,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6651 to 6224. [2021-07-09 17:47:34,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6224 states, 6223 states have (on average 3.4999196529005303) internal successors, (21780), 6223 states have internal predecessors, (21780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:34,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6224 states to 6224 states and 21780 transitions. [2021-07-09 17:47:34,728 INFO L78 Accepts]: Start accepts. Automaton has 6224 states and 21780 transitions. Word has length 47 [2021-07-09 17:47:34,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:47:34,728 INFO L482 AbstractCegarLoop]: Abstraction has 6224 states and 21780 transitions. [2021-07-09 17:47:34,728 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) [2021-07-09 17:47:34,728 INFO L276 IsEmpty]: Start isEmpty. Operand 6224 states and 21780 transitions. [2021-07-09 17:47:34,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:47:34,738 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:47:34,738 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:47:34,738 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-07-09 17:47:34,738 INFO L430 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:47:34,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:47:34,738 INFO L82 PathProgramCache]: Analyzing trace with hash -115495190, now seen corresponding path program 102 times [2021-07-09 17:47:34,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:47:34,738 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899972632] [2021-07-09 17:47:34,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:47:34,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:47:34,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:47:34,936 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:47:34,936 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899972632] [2021-07-09 17:47:34,936 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899972632] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:47:34,936 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:47:34,936 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:47:34,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218513635] [2021-07-09 17:47:34,936 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:47:34,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:47:34,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:47:34,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:47:34,937 INFO L87 Difference]: Start difference. First operand 6224 states and 21780 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) [2021-07-09 17:47:35,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:47:35,842 INFO L93 Difference]: Finished difference Result 6649 states and 23153 transitions. [2021-07-09 17:47:35,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-09 17:47:35,842 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 [2021-07-09 17:47:35,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:47:35,856 INFO L225 Difference]: With dead ends: 6649 [2021-07-09 17:47:35,856 INFO L226 Difference]: Without dead ends: 6520 [2021-07-09 17:47:35,856 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 573.2ms TimeCoverageRelationStatistics Valid=141, Invalid=1341, Unknown=0, NotChecked=0, Total=1482 [2021-07-09 17:47:35,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6520 states. [2021-07-09 17:47:35,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6520 to 6224. [2021-07-09 17:47:35,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6224 states, 6223 states have (on average 3.4960629921259843) internal successors, (21756), 6223 states have internal predecessors, (21756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:35,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6224 states to 6224 states and 21756 transitions. [2021-07-09 17:47:35,957 INFO L78 Accepts]: Start accepts. Automaton has 6224 states and 21756 transitions. Word has length 47 [2021-07-09 17:47:35,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:47:35,957 INFO L482 AbstractCegarLoop]: Abstraction has 6224 states and 21756 transitions. [2021-07-09 17:47:35,957 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) [2021-07-09 17:47:35,957 INFO L276 IsEmpty]: Start isEmpty. Operand 6224 states and 21756 transitions. [2021-07-09 17:47:35,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:47:35,967 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:47:35,967 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:47:35,967 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-07-09 17:47:35,967 INFO L430 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:47:35,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:47:35,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1928645226, now seen corresponding path program 103 times [2021-07-09 17:47:35,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:47:35,967 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026847298] [2021-07-09 17:47:35,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:47:35,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:47:36,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:47:36,166 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:47:36,166 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026847298] [2021-07-09 17:47:36,166 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026847298] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:47:36,166 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:47:36,166 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:47:36,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550491812] [2021-07-09 17:47:36,166 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:47:36,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:47:36,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:47:36,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:47:36,167 INFO L87 Difference]: Start difference. First operand 6224 states and 21756 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) [2021-07-09 17:47:37,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:47:37,120 INFO L93 Difference]: Finished difference Result 6692 states and 23264 transitions. [2021-07-09 17:47:37,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-07-09 17:47:37,120 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 [2021-07-09 17:47:37,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:47:37,134 INFO L225 Difference]: With dead ends: 6692 [2021-07-09 17:47:37,134 INFO L226 Difference]: Without dead ends: 6603 [2021-07-09 17:47:37,134 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 616.0ms TimeCoverageRelationStatistics Valid=154, Invalid=1486, Unknown=0, NotChecked=0, Total=1640 [2021-07-09 17:47:37,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6603 states. [2021-07-09 17:47:37,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6603 to 6224. [2021-07-09 17:47:37,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6224 states, 6223 states have (on average 3.4960629921259843) internal successors, (21756), 6223 states have internal predecessors, (21756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:37,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6224 states to 6224 states and 21756 transitions. [2021-07-09 17:47:37,234 INFO L78 Accepts]: Start accepts. Automaton has 6224 states and 21756 transitions. Word has length 47 [2021-07-09 17:47:37,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:47:37,234 INFO L482 AbstractCegarLoop]: Abstraction has 6224 states and 21756 transitions. [2021-07-09 17:47:37,234 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) [2021-07-09 17:47:37,234 INFO L276 IsEmpty]: Start isEmpty. Operand 6224 states and 21756 transitions. [2021-07-09 17:47:37,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:47:37,243 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:47:37,243 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:47:37,243 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-07-09 17:47:37,243 INFO L430 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:47:37,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:47:37,244 INFO L82 PathProgramCache]: Analyzing trace with hash 244182540, now seen corresponding path program 104 times [2021-07-09 17:47:37,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:47:37,244 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725987335] [2021-07-09 17:47:37,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:47:37,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:47:37,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:47:37,449 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:47:37,449 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725987335] [2021-07-09 17:47:37,449 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725987335] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:47:37,449 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:47:37,449 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:47:37,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113108750] [2021-07-09 17:47:37,450 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:47:37,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:47:37,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:47:37,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:47:37,450 INFO L87 Difference]: Start difference. First operand 6224 states and 21756 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) [2021-07-09 17:47:38,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:47:38,347 INFO L93 Difference]: Finished difference Result 6700 states and 23292 transitions. [2021-07-09 17:47:38,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-07-09 17:47:38,347 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 [2021-07-09 17:47:38,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:47:38,361 INFO L225 Difference]: With dead ends: 6700 [2021-07-09 17:47:38,362 INFO L226 Difference]: Without dead ends: 6595 [2021-07-09 17:47:38,362 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 612.1ms TimeCoverageRelationStatistics Valid=149, Invalid=1411, Unknown=0, NotChecked=0, Total=1560 [2021-07-09 17:47:38,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6595 states. [2021-07-09 17:47:38,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6595 to 6240. [2021-07-09 17:47:38,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6240 states, 6239 states have (on average 3.494790831864081) internal successors, (21804), 6239 states have internal predecessors, (21804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:38,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6240 states to 6240 states and 21804 transitions. [2021-07-09 17:47:38,461 INFO L78 Accepts]: Start accepts. Automaton has 6240 states and 21804 transitions. Word has length 47 [2021-07-09 17:47:38,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:47:38,462 INFO L482 AbstractCegarLoop]: Abstraction has 6240 states and 21804 transitions. [2021-07-09 17:47:38,462 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) [2021-07-09 17:47:38,462 INFO L276 IsEmpty]: Start isEmpty. Operand 6240 states and 21804 transitions. [2021-07-09 17:47:38,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:47:38,471 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:47:38,471 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:47:38,472 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-07-09 17:47:38,472 INFO L430 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:47:38,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:47:38,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1572879960, now seen corresponding path program 105 times [2021-07-09 17:47:38,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:47:38,472 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124076694] [2021-07-09 17:47:38,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:47:38,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:47:38,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:47:38,670 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:47:38,670 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124076694] [2021-07-09 17:47:38,670 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124076694] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:47:38,670 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:47:38,670 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:47:38,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870042575] [2021-07-09 17:47:38,670 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:47:38,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:47:38,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:47:38,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:47:38,671 INFO L87 Difference]: Start difference. First operand 6240 states and 21804 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) [2021-07-09 17:47:39,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:47:39,517 INFO L93 Difference]: Finished difference Result 6593 states and 22965 transitions. [2021-07-09 17:47:39,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-09 17:47:39,517 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 [2021-07-09 17:47:39,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:47:39,530 INFO L225 Difference]: With dead ends: 6593 [2021-07-09 17:47:39,530 INFO L226 Difference]: Without dead ends: 6320 [2021-07-09 17:47:39,530 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 546.1ms TimeCoverageRelationStatistics Valid=137, Invalid=1269, Unknown=0, NotChecked=0, Total=1406 [2021-07-09 17:47:39,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6320 states. [2021-07-09 17:47:39,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6320 to 6112. [2021-07-09 17:47:39,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6112 states, 6111 states have (on average 3.503845524464081) internal successors, (21412), 6111 states have internal predecessors, (21412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:39,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6112 states to 6112 states and 21412 transitions. [2021-07-09 17:47:39,630 INFO L78 Accepts]: Start accepts. Automaton has 6112 states and 21412 transitions. Word has length 47 [2021-07-09 17:47:39,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:47:39,630 INFO L482 AbstractCegarLoop]: Abstraction has 6112 states and 21412 transitions. [2021-07-09 17:47:39,630 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) [2021-07-09 17:47:39,630 INFO L276 IsEmpty]: Start isEmpty. Operand 6112 states and 21412 transitions. [2021-07-09 17:47:39,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:47:39,639 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:47:39,639 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:47:39,639 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-07-09 17:47:39,639 INFO L430 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:47:39,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:47:39,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1084388546, now seen corresponding path program 106 times [2021-07-09 17:47:39,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:47:39,639 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412663247] [2021-07-09 17:47:39,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:47:39,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:47:39,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:47:39,831 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:47:39,831 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412663247] [2021-07-09 17:47:39,831 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412663247] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:47:39,831 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:47:39,831 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 17:47:39,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774206234] [2021-07-09 17:47:39,831 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 17:47:39,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:47:39,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 17:47:39,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-07-09 17:47:39,832 INFO L87 Difference]: Start difference. First operand 6112 states and 21412 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) [2021-07-09 17:47:40,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:47:40,755 INFO L93 Difference]: Finished difference Result 6837 states and 23807 transitions. [2021-07-09 17:47:40,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-07-09 17:47:40,756 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 [2021-07-09 17:47:40,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:47:40,769 INFO L225 Difference]: With dead ends: 6837 [2021-07-09 17:47:40,769 INFO L226 Difference]: Without dead ends: 6700 [2021-07-09 17:47:40,770 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 582.7ms TimeCoverageRelationStatistics Valid=149, Invalid=1333, Unknown=0, NotChecked=0, Total=1482 [2021-07-09 17:47:40,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6700 states. [2021-07-09 17:47:40,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6700 to 6132. [2021-07-09 17:47:40,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6132 states, 6131 states have (on average 3.5031805578209103) internal successors, (21478), 6131 states have internal predecessors, (21478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:40,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6132 states to 6132 states and 21478 transitions. [2021-07-09 17:47:40,866 INFO L78 Accepts]: Start accepts. Automaton has 6132 states and 21478 transitions. Word has length 47 [2021-07-09 17:47:40,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:47:40,866 INFO L482 AbstractCegarLoop]: Abstraction has 6132 states and 21478 transitions. [2021-07-09 17:47:40,866 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) [2021-07-09 17:47:40,866 INFO L276 IsEmpty]: Start isEmpty. Operand 6132 states and 21478 transitions. [2021-07-09 17:47:40,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:47:40,874 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:47:40,874 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:47:40,875 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-07-09 17:47:40,875 INFO L430 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:47:40,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:47:40,875 INFO L82 PathProgramCache]: Analyzing trace with hash 433307676, now seen corresponding path program 107 times [2021-07-09 17:47:40,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:47:40,875 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080145163] [2021-07-09 17:47:40,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:47:40,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:47:41,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:47:41,074 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:47:41,074 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080145163] [2021-07-09 17:47:41,075 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080145163] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:47:41,075 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:47:41,075 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:47:41,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559000843] [2021-07-09 17:47:41,075 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:47:41,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:47:41,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:47:41,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:47:41,075 INFO L87 Difference]: Start difference. First operand 6132 states and 21478 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) [2021-07-09 17:47:42,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:47:42,051 INFO L93 Difference]: Finished difference Result 6896 states and 23966 transitions. [2021-07-09 17:47:42,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-07-09 17:47:42,051 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 [2021-07-09 17:47:42,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:47:42,066 INFO L225 Difference]: With dead ends: 6896 [2021-07-09 17:47:42,066 INFO L226 Difference]: Without dead ends: 6807 [2021-07-09 17:47:42,066 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 624.6ms TimeCoverageRelationStatistics Valid=167, Invalid=1555, Unknown=0, NotChecked=0, Total=1722 [2021-07-09 17:47:42,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6807 states. [2021-07-09 17:47:42,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6807 to 6196. [2021-07-09 17:47:42,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6196 states, 6195 states have (on average 3.501856335754641) internal successors, (21694), 6195 states have internal predecessors, (21694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:42,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6196 states to 6196 states and 21694 transitions. [2021-07-09 17:47:42,167 INFO L78 Accepts]: Start accepts. Automaton has 6196 states and 21694 transitions. Word has length 47 [2021-07-09 17:47:42,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:47:42,167 INFO L482 AbstractCegarLoop]: Abstraction has 6196 states and 21694 transitions. [2021-07-09 17:47:42,167 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) [2021-07-09 17:47:42,167 INFO L276 IsEmpty]: Start isEmpty. Operand 6196 states and 21694 transitions. [2021-07-09 17:47:42,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:47:42,177 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:47:42,177 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:47:42,177 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-07-09 17:47:42,177 INFO L430 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:47:42,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:47:42,177 INFO L82 PathProgramCache]: Analyzing trace with hash 867337022, now seen corresponding path program 108 times [2021-07-09 17:47:42,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:47:42,178 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540298873] [2021-07-09 17:47:42,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:47:42,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:47:42,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:47:42,384 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:47:42,384 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540298873] [2021-07-09 17:47:42,384 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540298873] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:47:42,384 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:47:42,384 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:47:42,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997607306] [2021-07-09 17:47:42,384 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:47:42,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:47:42,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:47:42,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:47:42,385 INFO L87 Difference]: Start difference. First operand 6196 states and 21694 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) [2021-07-09 17:47:43,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:47:43,370 INFO L93 Difference]: Finished difference Result 6805 states and 23695 transitions. [2021-07-09 17:47:43,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-09 17:47:43,371 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 [2021-07-09 17:47:43,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:47:43,385 INFO L225 Difference]: With dead ends: 6805 [2021-07-09 17:47:43,385 INFO L226 Difference]: Without dead ends: 6676 [2021-07-09 17:47:43,385 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 626.1ms TimeCoverageRelationStatistics Valid=159, Invalid=1481, Unknown=0, NotChecked=0, Total=1640 [2021-07-09 17:47:43,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6676 states. [2021-07-09 17:47:43,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6676 to 6196. [2021-07-09 17:47:43,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6196 states, 6195 states have (on average 3.4979822437449557) internal successors, (21670), 6195 states have internal predecessors, (21670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:43,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6196 states to 6196 states and 21670 transitions. [2021-07-09 17:47:43,487 INFO L78 Accepts]: Start accepts. Automaton has 6196 states and 21670 transitions. Word has length 47 [2021-07-09 17:47:43,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:47:43,487 INFO L482 AbstractCegarLoop]: Abstraction has 6196 states and 21670 transitions. [2021-07-09 17:47:43,487 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) [2021-07-09 17:47:43,487 INFO L276 IsEmpty]: Start isEmpty. Operand 6196 states and 21670 transitions. [2021-07-09 17:47:43,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:47:43,497 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:47:43,497 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:47:43,497 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-07-09 17:47:43,497 INFO L430 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:47:43,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:47:43,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1866196788, now seen corresponding path program 109 times [2021-07-09 17:47:43,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:47:43,497 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004885370] [2021-07-09 17:47:43,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:47:43,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:47:43,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:47:43,694 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:47:43,694 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004885370] [2021-07-09 17:47:43,694 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004885370] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:47:43,694 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:47:43,694 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:47:43,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896144628] [2021-07-09 17:47:43,695 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:47:43,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:47:43,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:47:43,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:47:43,695 INFO L87 Difference]: Start difference. First operand 6196 states and 21670 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) [2021-07-09 17:47:44,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:47:44,694 INFO L93 Difference]: Finished difference Result 6944 states and 24142 transitions. [2021-07-09 17:47:44,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-07-09 17:47:44,694 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 [2021-07-09 17:47:44,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:47:44,708 INFO L225 Difference]: With dead ends: 6944 [2021-07-09 17:47:44,708 INFO L226 Difference]: Without dead ends: 6855 [2021-07-09 17:47:44,709 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 666.1ms TimeCoverageRelationStatistics Valid=181, Invalid=1711, Unknown=0, NotChecked=0, Total=1892 [2021-07-09 17:47:44,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6855 states. [2021-07-09 17:47:44,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6855 to 6196. [2021-07-09 17:47:44,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6196 states, 6195 states have (on average 3.4979822437449557) internal successors, (21670), 6195 states have internal predecessors, (21670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:44,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6196 states to 6196 states and 21670 transitions. [2021-07-09 17:47:44,810 INFO L78 Accepts]: Start accepts. Automaton has 6196 states and 21670 transitions. Word has length 47 [2021-07-09 17:47:44,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:47:44,810 INFO L482 AbstractCegarLoop]: Abstraction has 6196 states and 21670 transitions. [2021-07-09 17:47:44,810 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) [2021-07-09 17:47:44,810 INFO L276 IsEmpty]: Start isEmpty. Operand 6196 states and 21670 transitions. [2021-07-09 17:47:44,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:47:44,819 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:47:44,820 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:47:44,820 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-07-09 17:47:44,820 INFO L430 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:47:44,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:47:44,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1432167442, now seen corresponding path program 110 times [2021-07-09 17:47:44,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:47:44,820 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099990321] [2021-07-09 17:47:44,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:47:44,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:47:45,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:47:45,028 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:47:45,028 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099990321] [2021-07-09 17:47:45,028 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099990321] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:47:45,028 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:47:45,028 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:47:45,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061242202] [2021-07-09 17:47:45,028 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:47:45,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:47:45,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:47:45,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:47:45,029 INFO L87 Difference]: Start difference. First operand 6196 states and 21670 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) [2021-07-09 17:47:46,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:47:46,017 INFO L93 Difference]: Finished difference Result 6952 states and 24170 transitions. [2021-07-09 17:47:46,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-07-09 17:47:46,017 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 [2021-07-09 17:47:46,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:47:46,033 INFO L225 Difference]: With dead ends: 6952 [2021-07-09 17:47:46,033 INFO L226 Difference]: Without dead ends: 6847 [2021-07-09 17:47:46,033 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 642.9ms TimeCoverageRelationStatistics Valid=176, Invalid=1630, Unknown=0, NotChecked=0, Total=1806 [2021-07-09 17:47:46,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6847 states. [2021-07-09 17:47:46,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6847 to 6212. [2021-07-09 17:47:46,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6212 states, 6211 states have (on average 3.496699404282724) internal successors, (21718), 6211 states have internal predecessors, (21718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:46,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6212 states to 6212 states and 21718 transitions. [2021-07-09 17:47:46,135 INFO L78 Accepts]: Start accepts. Automaton has 6212 states and 21718 transitions. Word has length 47 [2021-07-09 17:47:46,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:47:46,135 INFO L482 AbstractCegarLoop]: Abstraction has 6212 states and 21718 transitions. [2021-07-09 17:47:46,135 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) [2021-07-09 17:47:46,135 INFO L276 IsEmpty]: Start isEmpty. Operand 6212 states and 21718 transitions. [2021-07-09 17:47:46,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:47:46,145 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:47:46,145 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:47:46,146 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-07-09 17:47:46,146 INFO L430 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:47:46,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:47:46,146 INFO L82 PathProgramCache]: Analyzing trace with hash -159233734, now seen corresponding path program 111 times [2021-07-09 17:47:46,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:47:46,146 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219188801] [2021-07-09 17:47:46,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:47:46,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:47:46,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:47:46,342 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:47:46,342 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219188801] [2021-07-09 17:47:46,342 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219188801] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:47:46,342 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:47:46,342 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:47:46,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181273545] [2021-07-09 17:47:46,342 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:47:46,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:47:46,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:47:46,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:47:46,343 INFO L87 Difference]: Start difference. First operand 6212 states and 21718 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) [2021-07-09 17:47:47,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:47:47,376 INFO L93 Difference]: Finished difference Result 6861 states and 23891 transitions. [2021-07-09 17:47:47,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-07-09 17:47:47,377 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 [2021-07-09 17:47:47,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:47:47,391 INFO L225 Difference]: With dead ends: 6861 [2021-07-09 17:47:47,391 INFO L226 Difference]: Without dead ends: 6636 [2021-07-09 17:47:47,392 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 647.8ms TimeCoverageRelationStatistics Valid=178, Invalid=1714, Unknown=0, NotChecked=0, Total=1892 [2021-07-09 17:47:47,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6636 states. [2021-07-09 17:47:47,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6636 to 6132. [2021-07-09 17:47:47,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6132 states, 6131 states have (on average 3.500570869352471) internal successors, (21462), 6131 states have internal predecessors, (21462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:47,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6132 states to 6132 states and 21462 transitions. [2021-07-09 17:47:47,487 INFO L78 Accepts]: Start accepts. Automaton has 6132 states and 21462 transitions. Word has length 47 [2021-07-09 17:47:47,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:47:47,487 INFO L482 AbstractCegarLoop]: Abstraction has 6132 states and 21462 transitions. [2021-07-09 17:47:47,487 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) [2021-07-09 17:47:47,487 INFO L276 IsEmpty]: Start isEmpty. Operand 6132 states and 21462 transitions. [2021-07-09 17:47:47,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:47:47,496 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:47:47,496 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:47:47,496 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-07-09 17:47:47,497 INFO L430 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:47:47,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:47:47,497 INFO L82 PathProgramCache]: Analyzing trace with hash 250908958, now seen corresponding path program 112 times [2021-07-09 17:47:47,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:47:47,497 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738436133] [2021-07-09 17:47:47,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:47:47,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:47:47,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:47:47,737 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:47:47,737 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738436133] [2021-07-09 17:47:47,737 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738436133] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:47:47,737 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:47:47,737 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:47:47,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879881702] [2021-07-09 17:47:47,738 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:47:47,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:47:47,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:47:47,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:47:47,738 INFO L87 Difference]: Start difference. First operand 6132 states and 21462 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) [2021-07-09 17:47:48,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:47:48,711 INFO L93 Difference]: Finished difference Result 6885 states and 23895 transitions. [2021-07-09 17:47:48,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-09 17:47:48,711 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 [2021-07-09 17:47:48,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:47:48,726 INFO L225 Difference]: With dead ends: 6885 [2021-07-09 17:47:48,726 INFO L226 Difference]: Without dead ends: 6748 [2021-07-09 17:47:48,726 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 666.3ms TimeCoverageRelationStatistics Valid=160, Invalid=1480, Unknown=0, NotChecked=0, Total=1640 [2021-07-09 17:47:48,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6748 states. [2021-07-09 17:47:48,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6748 to 6138. [2021-07-09 17:47:48,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6138 states, 6137 states have (on average 3.500570311226984) internal successors, (21483), 6137 states have internal predecessors, (21483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:48,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6138 states to 6138 states and 21483 transitions. [2021-07-09 17:47:48,828 INFO L78 Accepts]: Start accepts. Automaton has 6138 states and 21483 transitions. Word has length 47 [2021-07-09 17:47:48,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:47:48,828 INFO L482 AbstractCegarLoop]: Abstraction has 6138 states and 21483 transitions. [2021-07-09 17:47:48,828 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) [2021-07-09 17:47:48,828 INFO L276 IsEmpty]: Start isEmpty. Operand 6138 states and 21483 transitions. [2021-07-09 17:47:48,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:47:48,837 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:47:48,837 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:47:48,837 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-07-09 17:47:48,837 INFO L430 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:47:48,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:47:48,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1768605180, now seen corresponding path program 113 times [2021-07-09 17:47:48,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:47:48,838 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076926895] [2021-07-09 17:47:48,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:47:48,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:47:49,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:47:49,061 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:47:49,061 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076926895] [2021-07-09 17:47:49,061 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076926895] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:47:49,061 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:47:49,061 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:47:49,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486887940] [2021-07-09 17:47:49,061 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:47:49,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:47:49,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:47:49,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:47:49,061 INFO L87 Difference]: Start difference. First operand 6138 states and 21483 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:50,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:47:50,130 INFO L93 Difference]: Finished difference Result 7035 states and 24317 transitions. [2021-07-09 17:47:50,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-07-09 17:47:50,130 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:47:50,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:47:50,145 INFO L225 Difference]: With dead ends: 7035 [2021-07-09 17:47:50,145 INFO L226 Difference]: Without dead ends: 6946 [2021-07-09 17:47:50,145 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 696.9ms TimeCoverageRelationStatistics Valid=188, Invalid=1792, Unknown=0, NotChecked=0, Total=1980 [2021-07-09 17:47:50,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6946 states. [2021-07-09 17:47:50,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6946 to 6138. [2021-07-09 17:47:50,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6138 states, 6137 states have (on average 3.500570311226984) internal successors, (21483), 6137 states have internal predecessors, (21483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:50,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6138 states to 6138 states and 21483 transitions. [2021-07-09 17:47:50,274 INFO L78 Accepts]: Start accepts. Automaton has 6138 states and 21483 transitions. Word has length 47 [2021-07-09 17:47:50,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:47:50,275 INFO L482 AbstractCegarLoop]: Abstraction has 6138 states and 21483 transitions. [2021-07-09 17:47:50,275 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:50,275 INFO L276 IsEmpty]: Start isEmpty. Operand 6138 states and 21483 transitions. [2021-07-09 17:47:50,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:47:50,283 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:47:50,283 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:47:50,284 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-07-09 17:47:50,284 INFO L430 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:47:50,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:47:50,284 INFO L82 PathProgramCache]: Analyzing trace with hash -2092332770, now seen corresponding path program 114 times [2021-07-09 17:47:50,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:47:50,284 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443640555] [2021-07-09 17:47:50,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:47:50,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:47:50,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:47:50,519 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:47:50,520 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443640555] [2021-07-09 17:47:50,520 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443640555] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:47:50,520 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:47:50,520 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:47:50,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113744497] [2021-07-09 17:47:50,520 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:47:50,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:47:50,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:47:50,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:47:50,520 INFO L87 Difference]: Start difference. First operand 6138 states and 21483 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:51,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:47:51,584 INFO L93 Difference]: Finished difference Result 6944 states and 24046 transitions. [2021-07-09 17:47:51,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-07-09 17:47:51,584 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:47:51,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:47:51,598 INFO L225 Difference]: With dead ends: 6944 [2021-07-09 17:47:51,599 INFO L226 Difference]: Without dead ends: 6815 [2021-07-09 17:47:51,599 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 684.1ms TimeCoverageRelationStatistics Valid=177, Invalid=1715, Unknown=0, NotChecked=0, Total=1892 [2021-07-09 17:47:51,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6815 states. [2021-07-09 17:47:51,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6815 to 6138. [2021-07-09 17:47:51,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6138 states, 6137 states have (on average 3.4995926348378688) internal successors, (21477), 6137 states have internal predecessors, (21477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:51,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6138 states to 6138 states and 21477 transitions. [2021-07-09 17:47:51,712 INFO L78 Accepts]: Start accepts. Automaton has 6138 states and 21477 transitions. Word has length 47 [2021-07-09 17:47:51,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:47:51,713 INFO L482 AbstractCegarLoop]: Abstraction has 6138 states and 21477 transitions. [2021-07-09 17:47:51,713 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:51,713 INFO L276 IsEmpty]: Start isEmpty. Operand 6138 states and 21477 transitions. [2021-07-09 17:47:51,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:47:51,727 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:47:51,727 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:47:51,728 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-07-09 17:47:51,728 INFO L430 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:47:51,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:47:51,728 INFO L82 PathProgramCache]: Analyzing trace with hash 417094076, now seen corresponding path program 115 times [2021-07-09 17:47:51,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:47:51,728 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294702662] [2021-07-09 17:47:51,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:47:51,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:47:51,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:47:51,955 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:47:51,955 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294702662] [2021-07-09 17:47:51,955 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294702662] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:47:51,955 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:47:51,955 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:47:51,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506713935] [2021-07-09 17:47:51,956 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:47:51,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:47:51,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:47:51,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:47:51,956 INFO L87 Difference]: Start difference. First operand 6138 states and 21477 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) [2021-07-09 17:47:54,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:47:54,538 INFO L93 Difference]: Finished difference Result 9355 states and 32755 transitions. [2021-07-09 17:47:54,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-07-09 17:47:54,538 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 [2021-07-09 17:47:54,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:47:54,559 INFO L225 Difference]: With dead ends: 9355 [2021-07-09 17:47:54,559 INFO L226 Difference]: Without dead ends: 9218 [2021-07-09 17:47:54,559 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1221 ImplicationChecksByTransitivity, 1443.0ms TimeCoverageRelationStatistics Valid=404, Invalid=4152, Unknown=0, NotChecked=0, Total=4556 [2021-07-09 17:47:54,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9218 states. [2021-07-09 17:47:54,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9218 to 6184. [2021-07-09 17:47:54,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6184 states, 6183 states have (on average 3.495390587093644) internal successors, (21612), 6183 states have internal predecessors, (21612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:54,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6184 states to 6184 states and 21612 transitions. [2021-07-09 17:47:54,681 INFO L78 Accepts]: Start accepts. Automaton has 6184 states and 21612 transitions. Word has length 47 [2021-07-09 17:47:54,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:47:54,681 INFO L482 AbstractCegarLoop]: Abstraction has 6184 states and 21612 transitions. [2021-07-09 17:47:54,681 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) [2021-07-09 17:47:54,681 INFO L276 IsEmpty]: Start isEmpty. Operand 6184 states and 21612 transitions. [2021-07-09 17:47:54,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:47:54,691 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:47:54,691 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:47:54,691 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-07-09 17:47:54,691 INFO L430 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:47:54,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:47:54,691 INFO L82 PathProgramCache]: Analyzing trace with hash 403562654, now seen corresponding path program 116 times [2021-07-09 17:47:54,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:47:54,691 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170781209] [2021-07-09 17:47:54,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:47:54,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:47:54,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:47:54,913 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:47:54,913 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170781209] [2021-07-09 17:47:54,913 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170781209] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:47:54,913 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:47:54,914 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:47:54,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245016672] [2021-07-09 17:47:54,914 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:47:54,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:47:54,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:47:54,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:47:54,914 INFO L87 Difference]: Start difference. First operand 6184 states and 21612 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:57,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:47:57,833 INFO L93 Difference]: Finished difference Result 10525 states and 37110 transitions. [2021-07-09 17:47:57,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-07-09 17:47:57,834 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:47:57,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:47:57,857 INFO L225 Difference]: With dead ends: 10525 [2021-07-09 17:47:57,858 INFO L226 Difference]: Without dead ends: 10436 [2021-07-09 17:47:57,858 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1543 ImplicationChecksByTransitivity, 1736.7ms TimeCoverageRelationStatistics Valid=531, Invalid=5019, Unknown=0, NotChecked=0, Total=5550 [2021-07-09 17:47:57,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10436 states. [2021-07-09 17:47:57,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10436 to 6188. [2021-07-09 17:47:57,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6188 states, 6187 states have (on average 3.4944237918215615) internal successors, (21620), 6187 states have internal predecessors, (21620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:57,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6188 states to 6188 states and 21620 transitions. [2021-07-09 17:47:57,987 INFO L78 Accepts]: Start accepts. Automaton has 6188 states and 21620 transitions. Word has length 47 [2021-07-09 17:47:57,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:47:57,987 INFO L482 AbstractCegarLoop]: Abstraction has 6188 states and 21620 transitions. [2021-07-09 17:47:57,987 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:47:57,987 INFO L276 IsEmpty]: Start isEmpty. Operand 6188 states and 21620 transitions. [2021-07-09 17:47:57,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:47:57,996 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:47:57,997 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:47:57,997 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-07-09 17:47:57,997 INFO L430 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:47:57,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:47:57,997 INFO L82 PathProgramCache]: Analyzing trace with hash -447089254, now seen corresponding path program 117 times [2021-07-09 17:47:57,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:47:57,997 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245282567] [2021-07-09 17:47:57,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:47:57,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:47:58,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:47:58,221 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:47:58,221 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245282567] [2021-07-09 17:47:58,221 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245282567] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:47:58,221 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:47:58,221 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:47:58,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155252515] [2021-07-09 17:47:58,222 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:47:58,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:47:58,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:47:58,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:47:58,222 INFO L87 Difference]: Start difference. First operand 6188 states and 21620 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:01,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:48:01,051 INFO L93 Difference]: Finished difference Result 10604 states and 37526 transitions. [2021-07-09 17:48:01,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-07-09 17:48:01,051 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:48:01,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:48:01,075 INFO L225 Difference]: With dead ends: 10604 [2021-07-09 17:48:01,075 INFO L226 Difference]: Without dead ends: 10497 [2021-07-09 17:48:01,076 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1386 ImplicationChecksByTransitivity, 1631.2ms TimeCoverageRelationStatistics Valid=484, Invalid=4628, Unknown=0, NotChecked=0, Total=5112 [2021-07-09 17:48:01,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10497 states. [2021-07-09 17:48:01,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10497 to 6146. [2021-07-09 17:48:01,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6146 states, 6145 states have (on average 3.497965825874695) internal successors, (21495), 6145 states have internal predecessors, (21495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:01,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6146 states to 6146 states and 21495 transitions. [2021-07-09 17:48:01,236 INFO L78 Accepts]: Start accepts. Automaton has 6146 states and 21495 transitions. Word has length 47 [2021-07-09 17:48:01,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:48:01,237 INFO L482 AbstractCegarLoop]: Abstraction has 6146 states and 21495 transitions. [2021-07-09 17:48:01,237 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:01,237 INFO L276 IsEmpty]: Start isEmpty. Operand 6146 states and 21495 transitions. [2021-07-09 17:48:01,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:48:01,245 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:48:01,245 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:48:01,245 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-07-09 17:48:01,245 INFO L430 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:48:01,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:48:01,246 INFO L82 PathProgramCache]: Analyzing trace with hash -546455394, now seen corresponding path program 118 times [2021-07-09 17:48:01,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:48:01,246 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676083308] [2021-07-09 17:48:01,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:48:01,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:48:01,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:48:01,463 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:48:01,463 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676083308] [2021-07-09 17:48:01,463 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676083308] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:48:01,463 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:48:01,463 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:48:01,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299084461] [2021-07-09 17:48:01,463 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:48:01,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:48:01,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:48:01,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:48:01,464 INFO L87 Difference]: Start difference. First operand 6146 states and 21495 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:02,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:48:02,592 INFO L93 Difference]: Finished difference Result 7096 states and 24509 transitions. [2021-07-09 17:48:02,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-07-09 17:48:02,593 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:48:02,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:48:02,607 INFO L225 Difference]: With dead ends: 7096 [2021-07-09 17:48:02,607 INFO L226 Difference]: Without dead ends: 7007 [2021-07-09 17:48:02,608 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 754.4ms TimeCoverageRelationStatistics Valid=203, Invalid=1959, Unknown=0, NotChecked=0, Total=2162 [2021-07-09 17:48:02,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7007 states. [2021-07-09 17:48:02,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7007 to 6148. [2021-07-09 17:48:02,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6148 states, 6147 states have (on average 3.497966487717586) internal successors, (21502), 6147 states have internal predecessors, (21502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:02,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6148 states to 6148 states and 21502 transitions. [2021-07-09 17:48:02,711 INFO L78 Accepts]: Start accepts. Automaton has 6148 states and 21502 transitions. Word has length 47 [2021-07-09 17:48:02,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:48:02,712 INFO L482 AbstractCegarLoop]: Abstraction has 6148 states and 21502 transitions. [2021-07-09 17:48:02,712 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:02,712 INFO L276 IsEmpty]: Start isEmpty. Operand 6148 states and 21502 transitions. [2021-07-09 17:48:02,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:48:02,721 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:48:02,721 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:48:02,721 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-07-09 17:48:02,721 INFO L430 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:48:02,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:48:02,721 INFO L82 PathProgramCache]: Analyzing trace with hash -870117218, now seen corresponding path program 119 times [2021-07-09 17:48:02,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:48:02,722 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728562125] [2021-07-09 17:48:02,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:48:02,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:48:02,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:48:02,941 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:48:02,941 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728562125] [2021-07-09 17:48:02,941 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728562125] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:48:02,941 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:48:02,941 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:48:02,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347177389] [2021-07-09 17:48:02,941 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:48:02,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:48:02,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:48:02,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:48:02,942 INFO L87 Difference]: Start difference. First operand 6148 states and 21502 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:04,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:48:04,119 INFO L93 Difference]: Finished difference Result 7104 states and 24537 transitions. [2021-07-09 17:48:04,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-07-09 17:48:04,119 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:48:04,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:48:04,134 INFO L225 Difference]: With dead ends: 7104 [2021-07-09 17:48:04,134 INFO L226 Difference]: Without dead ends: 6999 [2021-07-09 17:48:04,134 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 748.0ms TimeCoverageRelationStatistics Valid=191, Invalid=1879, Unknown=0, NotChecked=0, Total=2070 [2021-07-09 17:48:04,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6999 states. [2021-07-09 17:48:04,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6999 to 6148. [2021-07-09 17:48:04,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6148 states, 6147 states have (on average 3.4976411257523994) internal successors, (21500), 6147 states have internal predecessors, (21500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:04,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6148 states to 6148 states and 21500 transitions. [2021-07-09 17:48:04,234 INFO L78 Accepts]: Start accepts. Automaton has 6148 states and 21500 transitions. Word has length 47 [2021-07-09 17:48:04,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:48:04,235 INFO L482 AbstractCegarLoop]: Abstraction has 6148 states and 21500 transitions. [2021-07-09 17:48:04,235 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:04,235 INFO L276 IsEmpty]: Start isEmpty. Operand 6148 states and 21500 transitions. [2021-07-09 17:48:04,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:48:04,244 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:48:04,244 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:48:04,244 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-07-09 17:48:04,244 INFO L430 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:48:04,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:48:04,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1800083644, now seen corresponding path program 120 times [2021-07-09 17:48:04,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:48:04,244 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031949686] [2021-07-09 17:48:04,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:48:04,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:48:04,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:48:04,471 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:48:04,471 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031949686] [2021-07-09 17:48:04,471 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031949686] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:48:04,471 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:48:04,471 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:48:04,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319985819] [2021-07-09 17:48:04,471 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:48:04,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:48:04,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:48:04,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:48:04,471 INFO L87 Difference]: Start difference. First operand 6148 states and 21500 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:05,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:48:05,897 INFO L93 Difference]: Finished difference Result 7685 states and 26629 transitions. [2021-07-09 17:48:05,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-07-09 17:48:05,898 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:48:05,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:48:05,913 INFO L225 Difference]: With dead ends: 7685 [2021-07-09 17:48:05,914 INFO L226 Difference]: Without dead ends: 7596 [2021-07-09 17:48:05,914 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 867.1ms TimeCoverageRelationStatistics Valid=225, Invalid=2225, Unknown=0, NotChecked=0, Total=2450 [2021-07-09 17:48:05,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7596 states. [2021-07-09 17:48:06,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7596 to 6252. [2021-07-09 17:48:06,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6252 states, 6251 states have (on average 3.493201087825948) internal successors, (21836), 6251 states have internal predecessors, (21836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:06,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6252 states to 6252 states and 21836 transitions. [2021-07-09 17:48:06,023 INFO L78 Accepts]: Start accepts. Automaton has 6252 states and 21836 transitions. Word has length 47 [2021-07-09 17:48:06,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:48:06,023 INFO L482 AbstractCegarLoop]: Abstraction has 6252 states and 21836 transitions. [2021-07-09 17:48:06,023 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:06,023 INFO L276 IsEmpty]: Start isEmpty. Operand 6252 states and 21836 transitions. [2021-07-09 17:48:06,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:48:06,033 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:48:06,033 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:48:06,033 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-07-09 17:48:06,033 INFO L430 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:48:06,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:48:06,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1024966042, now seen corresponding path program 121 times [2021-07-09 17:48:06,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:48:06,033 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082585151] [2021-07-09 17:48:06,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:48:06,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:48:06,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:48:06,286 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:48:06,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082585151] [2021-07-09 17:48:06,286 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082585151] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:48:06,286 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:48:06,286 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:48:06,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373597329] [2021-07-09 17:48:06,286 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:48:06,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:48:06,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:48:06,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:48:06,287 INFO L87 Difference]: Start difference. First operand 6252 states and 21836 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:07,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:48:07,657 INFO L93 Difference]: Finished difference Result 7687 states and 26622 transitions. [2021-07-09 17:48:07,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-07-09 17:48:07,657 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:48:07,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:48:07,673 INFO L225 Difference]: With dead ends: 7687 [2021-07-09 17:48:07,673 INFO L226 Difference]: Without dead ends: 7592 [2021-07-09 17:48:07,674 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 850.0ms TimeCoverageRelationStatistics Valid=213, Invalid=2139, Unknown=0, NotChecked=0, Total=2352 [2021-07-09 17:48:07,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7592 states. [2021-07-09 17:48:07,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7592 to 6232. [2021-07-09 17:48:07,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6232 states, 6231 states have (on average 3.4973519499277805) internal successors, (21792), 6231 states have internal predecessors, (21792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:07,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6232 states to 6232 states and 21792 transitions. [2021-07-09 17:48:07,782 INFO L78 Accepts]: Start accepts. Automaton has 6232 states and 21792 transitions. Word has length 47 [2021-07-09 17:48:07,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:48:07,782 INFO L482 AbstractCegarLoop]: Abstraction has 6232 states and 21792 transitions. [2021-07-09 17:48:07,782 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:07,782 INFO L276 IsEmpty]: Start isEmpty. Operand 6232 states and 21792 transitions. [2021-07-09 17:48:07,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:48:07,792 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:48:07,792 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:48:07,792 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-07-09 17:48:07,792 INFO L430 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:48:07,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:48:07,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1323857720, now seen corresponding path program 122 times [2021-07-09 17:48:07,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:48:07,793 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863635137] [2021-07-09 17:48:07,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:48:07,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:48:08,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:48:08,011 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:48:08,011 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863635137] [2021-07-09 17:48:08,011 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863635137] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:48:08,011 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:48:08,011 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:48:08,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966017925] [2021-07-09 17:48:08,012 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:48:08,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:48:08,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:48:08,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:48:08,012 INFO L87 Difference]: Start difference. First operand 6232 states and 21792 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:09,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:48:09,095 INFO L93 Difference]: Finished difference Result 7069 states and 24460 transitions. [2021-07-09 17:48:09,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-07-09 17:48:09,095 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:48:09,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:48:09,110 INFO L225 Difference]: With dead ends: 7069 [2021-07-09 17:48:09,110 INFO L226 Difference]: Without dead ends: 6972 [2021-07-09 17:48:09,110 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 673.6ms TimeCoverageRelationStatistics Valid=171, Invalid=1721, Unknown=0, NotChecked=0, Total=1892 [2021-07-09 17:48:09,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6972 states. [2021-07-09 17:48:09,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6972 to 6246. [2021-07-09 17:48:09,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6246 states, 6245 states have (on average 3.4938350680544437) internal successors, (21819), 6245 states have internal predecessors, (21819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:09,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6246 states to 6246 states and 21819 transitions. [2021-07-09 17:48:09,207 INFO L78 Accepts]: Start accepts. Automaton has 6246 states and 21819 transitions. Word has length 47 [2021-07-09 17:48:09,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:48:09,208 INFO L482 AbstractCegarLoop]: Abstraction has 6246 states and 21819 transitions. [2021-07-09 17:48:09,208 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:09,208 INFO L276 IsEmpty]: Start isEmpty. Operand 6246 states and 21819 transitions. [2021-07-09 17:48:09,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:48:09,217 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:48:09,217 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:48:09,217 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-07-09 17:48:09,217 INFO L430 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:48:09,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:48:09,217 INFO L82 PathProgramCache]: Analyzing trace with hash -401562790, now seen corresponding path program 123 times [2021-07-09 17:48:09,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:48:09,218 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159092984] [2021-07-09 17:48:09,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:48:09,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:48:09,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:48:09,444 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:48:09,444 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159092984] [2021-07-09 17:48:09,444 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159092984] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:48:09,444 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:48:09,444 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:48:09,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10802510] [2021-07-09 17:48:09,444 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:48:09,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:48:09,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:48:09,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:48:09,444 INFO L87 Difference]: Start difference. First operand 6246 states and 21819 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:10,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:48:10,522 INFO L93 Difference]: Finished difference Result 7045 states and 24370 transitions. [2021-07-09 17:48:10,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-07-09 17:48:10,522 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:48:10,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:48:10,537 INFO L225 Difference]: With dead ends: 7045 [2021-07-09 17:48:10,537 INFO L226 Difference]: Without dead ends: 6940 [2021-07-09 17:48:10,537 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 697.7ms TimeCoverageRelationStatistics Valid=171, Invalid=1721, Unknown=0, NotChecked=0, Total=1892 [2021-07-09 17:48:10,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6940 states. [2021-07-09 17:48:10,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6940 to 6232. [2021-07-09 17:48:10,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6232 states, 6231 states have (on average 3.4963890226287915) internal successors, (21786), 6231 states have internal predecessors, (21786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:10,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6232 states to 6232 states and 21786 transitions. [2021-07-09 17:48:10,639 INFO L78 Accepts]: Start accepts. Automaton has 6232 states and 21786 transitions. Word has length 47 [2021-07-09 17:48:10,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:48:10,639 INFO L482 AbstractCegarLoop]: Abstraction has 6232 states and 21786 transitions. [2021-07-09 17:48:10,639 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:10,639 INFO L276 IsEmpty]: Start isEmpty. Operand 6232 states and 21786 transitions. [2021-07-09 17:48:10,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:48:10,648 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:48:10,648 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:48:10,648 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-07-09 17:48:10,648 INFO L430 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:48:10,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:48:10,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1918004954, now seen corresponding path program 124 times [2021-07-09 17:48:10,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:48:10,649 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386643962] [2021-07-09 17:48:10,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:48:10,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:48:10,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:48:10,862 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:48:10,862 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386643962] [2021-07-09 17:48:10,862 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386643962] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:48:10,862 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:48:10,862 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:48:10,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319998690] [2021-07-09 17:48:10,863 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:48:10,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:48:10,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:48:10,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:48:10,863 INFO L87 Difference]: Start difference. First operand 6232 states and 21786 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:12,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:48:12,003 INFO L93 Difference]: Finished difference Result 6956 states and 24174 transitions. [2021-07-09 17:48:12,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-07-09 17:48:12,004 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:48:12,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:48:12,018 INFO L225 Difference]: With dead ends: 6956 [2021-07-09 17:48:12,018 INFO L226 Difference]: Without dead ends: 6867 [2021-07-09 17:48:12,018 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 778.7ms TimeCoverageRelationStatistics Valid=204, Invalid=1958, Unknown=0, NotChecked=0, Total=2162 [2021-07-09 17:48:12,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6867 states. [2021-07-09 17:48:12,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6867 to 6236. [2021-07-09 17:48:12,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6236 states, 6235 states have (on average 3.4963913392141137) internal successors, (21800), 6235 states have internal predecessors, (21800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:12,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6236 states to 6236 states and 21800 transitions. [2021-07-09 17:48:12,119 INFO L78 Accepts]: Start accepts. Automaton has 6236 states and 21800 transitions. Word has length 47 [2021-07-09 17:48:12,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:48:12,119 INFO L482 AbstractCegarLoop]: Abstraction has 6236 states and 21800 transitions. [2021-07-09 17:48:12,119 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:12,119 INFO L276 IsEmpty]: Start isEmpty. Operand 6236 states and 21800 transitions. [2021-07-09 17:48:12,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:48:12,128 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:48:12,128 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:48:12,128 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-07-09 17:48:12,128 INFO L430 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:48:12,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:48:12,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1594343130, now seen corresponding path program 125 times [2021-07-09 17:48:12,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:48:12,129 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983771796] [2021-07-09 17:48:12,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:48:12,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:48:12,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:48:12,346 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:48:12,346 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983771796] [2021-07-09 17:48:12,346 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983771796] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:48:12,346 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:48:12,346 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:48:12,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665317863] [2021-07-09 17:48:12,346 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:48:12,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:48:12,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:48:12,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:48:12,347 INFO L87 Difference]: Start difference. First operand 6236 states and 21800 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:13,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:48:13,457 INFO L93 Difference]: Finished difference Result 6964 states and 24202 transitions. [2021-07-09 17:48:13,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-07-09 17:48:13,457 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:48:13,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:48:13,473 INFO L225 Difference]: With dead ends: 6964 [2021-07-09 17:48:13,473 INFO L226 Difference]: Without dead ends: 6859 [2021-07-09 17:48:13,474 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 741.9ms TimeCoverageRelationStatistics Valid=201, Invalid=1869, Unknown=0, NotChecked=0, Total=2070 [2021-07-09 17:48:13,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6859 states. [2021-07-09 17:48:13,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6859 to 6252. [2021-07-09 17:48:13,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6252 states, 6251 states have (on average 3.495120780675092) internal successors, (21848), 6251 states have internal predecessors, (21848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:13,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6252 states to 6252 states and 21848 transitions. [2021-07-09 17:48:13,577 INFO L78 Accepts]: Start accepts. Automaton has 6252 states and 21848 transitions. Word has length 47 [2021-07-09 17:48:13,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:48:13,577 INFO L482 AbstractCegarLoop]: Abstraction has 6252 states and 21848 transitions. [2021-07-09 17:48:13,577 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:13,577 INFO L276 IsEmpty]: Start isEmpty. Operand 6252 states and 21848 transitions. [2021-07-09 17:48:13,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:48:13,587 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:48:13,587 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:48:13,587 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-07-09 17:48:13,587 INFO L430 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:48:13,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:48:13,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1650454584, now seen corresponding path program 126 times [2021-07-09 17:48:13,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:48:13,587 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217727081] [2021-07-09 17:48:13,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:48:13,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:48:13,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:48:13,816 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:48:13,816 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217727081] [2021-07-09 17:48:13,816 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217727081] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:48:13,816 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:48:13,816 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:48:13,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554427741] [2021-07-09 17:48:13,816 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:48:13,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:48:13,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:48:13,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:48:13,817 INFO L87 Difference]: Start difference. First operand 6252 states and 21848 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:15,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:48:15,002 INFO L93 Difference]: Finished difference Result 6933 states and 24139 transitions. [2021-07-09 17:48:15,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-07-09 17:48:15,003 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:48:15,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:48:15,017 INFO L225 Difference]: With dead ends: 6933 [2021-07-09 17:48:15,017 INFO L226 Difference]: Without dead ends: 6772 [2021-07-09 17:48:15,018 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 795.2ms TimeCoverageRelationStatistics Valid=223, Invalid=2129, Unknown=0, NotChecked=0, Total=2352 [2021-07-09 17:48:15,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6772 states. [2021-07-09 17:48:15,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6772 to 6236. [2021-07-09 17:48:15,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6236 states, 6235 states have (on average 3.4957497995188453) internal successors, (21796), 6235 states have internal predecessors, (21796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:15,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6236 states to 6236 states and 21796 transitions. [2021-07-09 17:48:15,118 INFO L78 Accepts]: Start accepts. Automaton has 6236 states and 21796 transitions. Word has length 47 [2021-07-09 17:48:15,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:48:15,118 INFO L482 AbstractCegarLoop]: Abstraction has 6236 states and 21796 transitions. [2021-07-09 17:48:15,118 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:15,118 INFO L276 IsEmpty]: Start isEmpty. Operand 6236 states and 21796 transitions. [2021-07-09 17:48:15,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:48:15,128 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:48:15,128 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:48:15,129 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-07-09 17:48:15,129 INFO L430 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:48:15,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:48:15,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1800513212, now seen corresponding path program 127 times [2021-07-09 17:48:15,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:48:15,129 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422836285] [2021-07-09 17:48:15,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:48:15,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:48:15,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:48:15,345 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:48:15,345 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422836285] [2021-07-09 17:48:15,345 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422836285] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:48:15,345 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:48:15,345 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:48:15,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630073882] [2021-07-09 17:48:15,345 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:48:15,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:48:15,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:48:15,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:48:15,346 INFO L87 Difference]: Start difference. First operand 6236 states and 21796 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:16,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:48:16,462 INFO L93 Difference]: Finished difference Result 7096 states and 24537 transitions. [2021-07-09 17:48:16,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-07-09 17:48:16,462 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:48:16,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:48:16,477 INFO L225 Difference]: With dead ends: 7096 [2021-07-09 17:48:16,477 INFO L226 Difference]: Without dead ends: 7007 [2021-07-09 17:48:16,478 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 739.5ms TimeCoverageRelationStatistics Valid=194, Invalid=1876, Unknown=0, NotChecked=0, Total=2070 [2021-07-09 17:48:16,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7007 states. [2021-07-09 17:48:16,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7007 to 6238. [2021-07-09 17:48:16,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6238 states, 6237 states have (on average 3.4957511624178292) internal successors, (21803), 6237 states have internal predecessors, (21803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:16,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6238 states to 6238 states and 21803 transitions. [2021-07-09 17:48:16,602 INFO L78 Accepts]: Start accepts. Automaton has 6238 states and 21803 transitions. Word has length 47 [2021-07-09 17:48:16,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:48:16,602 INFO L482 AbstractCegarLoop]: Abstraction has 6238 states and 21803 transitions. [2021-07-09 17:48:16,602 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:16,602 INFO L276 IsEmpty]: Start isEmpty. Operand 6238 states and 21803 transitions. [2021-07-09 17:48:16,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:48:16,612 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:48:16,612 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:48:16,612 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2021-07-09 17:48:16,612 INFO L430 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:48:16,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:48:16,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1476851388, now seen corresponding path program 128 times [2021-07-09 17:48:16,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:48:16,613 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139062796] [2021-07-09 17:48:16,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:48:16,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:48:16,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:48:16,837 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:48:16,838 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139062796] [2021-07-09 17:48:16,838 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139062796] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:48:16,838 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:48:16,838 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:48:16,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876568392] [2021-07-09 17:48:16,838 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:48:16,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:48:16,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:48:16,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:48:16,839 INFO L87 Difference]: Start difference. First operand 6238 states and 21803 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:17,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:48:17,922 INFO L93 Difference]: Finished difference Result 7104 states and 24565 transitions. [2021-07-09 17:48:17,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-07-09 17:48:17,923 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:48:17,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:48:17,937 INFO L225 Difference]: With dead ends: 7104 [2021-07-09 17:48:17,937 INFO L226 Difference]: Without dead ends: 6999 [2021-07-09 17:48:17,938 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 723.4ms TimeCoverageRelationStatistics Valid=196, Invalid=1874, Unknown=0, NotChecked=0, Total=2070 [2021-07-09 17:48:17,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6999 states. [2021-07-09 17:48:18,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6999 to 6238. [2021-07-09 17:48:18,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6238 states, 6237 states have (on average 3.4954304954304956) internal successors, (21801), 6237 states have internal predecessors, (21801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:18,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6238 states to 6238 states and 21801 transitions. [2021-07-09 17:48:18,043 INFO L78 Accepts]: Start accepts. Automaton has 6238 states and 21801 transitions. Word has length 47 [2021-07-09 17:48:18,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:48:18,043 INFO L482 AbstractCegarLoop]: Abstraction has 6238 states and 21801 transitions. [2021-07-09 17:48:18,043 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:18,043 INFO L276 IsEmpty]: Start isEmpty. Operand 6238 states and 21801 transitions. [2021-07-09 17:48:18,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:48:18,053 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:48:18,053 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:48:18,055 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-07-09 17:48:18,055 INFO L430 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:48:18,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:48:18,055 INFO L82 PathProgramCache]: Analyzing trace with hash -147915046, now seen corresponding path program 129 times [2021-07-09 17:48:18,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:48:18,055 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198559257] [2021-07-09 17:48:18,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:48:18,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:48:18,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:48:18,280 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:48:18,280 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198559257] [2021-07-09 17:48:18,280 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198559257] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:48:18,280 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:48:18,280 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:48:18,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951099270] [2021-07-09 17:48:18,281 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:48:18,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:48:18,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:48:18,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:48:18,281 INFO L87 Difference]: Start difference. First operand 6238 states and 21801 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:19,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:48:19,889 INFO L93 Difference]: Finished difference Result 8205 states and 28472 transitions. [2021-07-09 17:48:19,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-07-09 17:48:19,889 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:48:19,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:48:19,906 INFO L225 Difference]: With dead ends: 8205 [2021-07-09 17:48:19,906 INFO L226 Difference]: Without dead ends: 8100 [2021-07-09 17:48:19,906 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 946.2ms TimeCoverageRelationStatistics Valid=250, Invalid=2506, Unknown=0, NotChecked=0, Total=2756 [2021-07-09 17:48:19,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8100 states. [2021-07-09 17:48:19,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8100 to 6184. [2021-07-09 17:48:20,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6184 states, 6183 states have (on average 3.4957140546660197) internal successors, (21614), 6183 states have internal predecessors, (21614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:20,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6184 states to 6184 states and 21614 transitions. [2021-07-09 17:48:20,016 INFO L78 Accepts]: Start accepts. Automaton has 6184 states and 21614 transitions. Word has length 47 [2021-07-09 17:48:20,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:48:20,016 INFO L482 AbstractCegarLoop]: Abstraction has 6184 states and 21614 transitions. [2021-07-09 17:48:20,016 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:20,016 INFO L276 IsEmpty]: Start isEmpty. Operand 6184 states and 21614 transitions. [2021-07-09 17:48:20,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:48:20,026 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:48:20,026 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:48:20,026 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-07-09 17:48:20,026 INFO L430 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:48:20,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:48:20,026 INFO L82 PathProgramCache]: Analyzing trace with hash -923032648, now seen corresponding path program 130 times [2021-07-09 17:48:20,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:48:20,026 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325435838] [2021-07-09 17:48:20,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:48:20,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:48:20,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:48:20,258 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:48:20,258 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325435838] [2021-07-09 17:48:20,258 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325435838] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:48:20,258 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:48:20,258 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:48:20,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198198370] [2021-07-09 17:48:20,258 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:48:20,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:48:20,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:48:20,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:48:20,259 INFO L87 Difference]: Start difference. First operand 6184 states and 21614 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:21,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:48:21,845 INFO L93 Difference]: Finished difference Result 8191 states and 28417 transitions. [2021-07-09 17:48:21,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-07-09 17:48:21,846 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:48:21,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:48:21,862 INFO L225 Difference]: With dead ends: 8191 [2021-07-09 17:48:21,862 INFO L226 Difference]: Without dead ends: 8096 [2021-07-09 17:48:21,863 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 881.7ms TimeCoverageRelationStatistics Valid=242, Invalid=2410, Unknown=0, NotChecked=0, Total=2652 [2021-07-09 17:48:21,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8096 states. [2021-07-09 17:48:21,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8096 to 6148. [2021-07-09 17:48:21,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6148 states, 6147 states have (on average 3.498291849682772) internal successors, (21504), 6147 states have internal predecessors, (21504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:21,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6148 states to 6148 states and 21504 transitions. [2021-07-09 17:48:21,972 INFO L78 Accepts]: Start accepts. Automaton has 6148 states and 21504 transitions. Word has length 47 [2021-07-09 17:48:21,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:48:21,972 INFO L482 AbstractCegarLoop]: Abstraction has 6148 states and 21504 transitions. [2021-07-09 17:48:21,972 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:21,972 INFO L276 IsEmpty]: Start isEmpty. Operand 6148 states and 21504 transitions. [2021-07-09 17:48:21,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:48:21,982 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:48:21,982 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:48:21,982 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2021-07-09 17:48:21,982 INFO L430 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:48:21,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:48:21,982 INFO L82 PathProgramCache]: Analyzing trace with hash -624140970, now seen corresponding path program 131 times [2021-07-09 17:48:21,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:48:21,982 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505913069] [2021-07-09 17:48:21,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:48:21,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:48:22,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:48:22,205 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:48:22,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505913069] [2021-07-09 17:48:22,205 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505913069] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:48:22,205 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:48:22,205 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:48:22,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425777733] [2021-07-09 17:48:22,206 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:48:22,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:48:22,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:48:22,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:48:22,206 INFO L87 Difference]: Start difference. First operand 6148 states and 21504 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:23,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:48:23,276 INFO L93 Difference]: Finished difference Result 7016 states and 24273 transitions. [2021-07-09 17:48:23,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-07-09 17:48:23,277 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:48:23,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:48:23,291 INFO L225 Difference]: With dead ends: 7016 [2021-07-09 17:48:23,291 INFO L226 Difference]: Without dead ends: 6919 [2021-07-09 17:48:23,291 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 705.2ms TimeCoverageRelationStatistics Valid=184, Invalid=1796, Unknown=0, NotChecked=0, Total=1980 [2021-07-09 17:48:23,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6919 states. [2021-07-09 17:48:23,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6919 to 6160. [2021-07-09 17:48:23,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6160 states, 6159 states have (on average 3.496022081506738) internal successors, (21532), 6159 states have internal predecessors, (21532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:23,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6160 states to 6160 states and 21532 transitions. [2021-07-09 17:48:23,395 INFO L78 Accepts]: Start accepts. Automaton has 6160 states and 21532 transitions. Word has length 47 [2021-07-09 17:48:23,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:48:23,395 INFO L482 AbstractCegarLoop]: Abstraction has 6160 states and 21532 transitions. [2021-07-09 17:48:23,395 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:23,395 INFO L276 IsEmpty]: Start isEmpty. Operand 6160 states and 21532 transitions. [2021-07-09 17:48:23,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:48:23,404 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:48:23,404 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:48:23,405 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2021-07-09 17:48:23,405 INFO L430 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:48:23,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:48:23,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1945405816, now seen corresponding path program 132 times [2021-07-09 17:48:23,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:48:23,405 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421934496] [2021-07-09 17:48:23,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:48:23,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:48:23,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:48:23,621 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:48:23,621 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421934496] [2021-07-09 17:48:23,621 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421934496] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:48:23,621 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:48:23,621 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:48:23,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957648268] [2021-07-09 17:48:23,621 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:48:23,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:48:23,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:48:23,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:48:23,622 INFO L87 Difference]: Start difference. First operand 6160 states and 21532 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:24,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:48:24,729 INFO L93 Difference]: Finished difference Result 6992 states and 24183 transitions. [2021-07-09 17:48:24,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-07-09 17:48:24,729 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:48:24,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:48:24,744 INFO L225 Difference]: With dead ends: 6992 [2021-07-09 17:48:24,745 INFO L226 Difference]: Without dead ends: 6893 [2021-07-09 17:48:24,745 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 677.8ms TimeCoverageRelationStatistics Valid=174, Invalid=1718, Unknown=0, NotChecked=0, Total=1892 [2021-07-09 17:48:24,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6893 states. [2021-07-09 17:48:24,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6893 to 6152. [2021-07-09 17:48:24,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6152 states, 6151 states have (on average 3.4973175093480733) internal successors, (21512), 6151 states have internal predecessors, (21512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:24,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6152 states to 6152 states and 21512 transitions. [2021-07-09 17:48:24,848 INFO L78 Accepts]: Start accepts. Automaton has 6152 states and 21512 transitions. Word has length 47 [2021-07-09 17:48:24,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:48:24,848 INFO L482 AbstractCegarLoop]: Abstraction has 6152 states and 21512 transitions. [2021-07-09 17:48:24,848 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:24,848 INFO L276 IsEmpty]: Start isEmpty. Operand 6152 states and 21512 transitions. [2021-07-09 17:48:24,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:48:24,857 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:48:24,857 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:48:24,857 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2021-07-09 17:48:24,857 INFO L430 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:48:24,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:48:24,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1273816916, now seen corresponding path program 133 times [2021-07-09 17:48:24,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:48:24,858 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699885479] [2021-07-09 17:48:24,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:48:24,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:48:25,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:48:25,079 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:48:25,079 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699885479] [2021-07-09 17:48:25,079 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699885479] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:48:25,079 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:48:25,079 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:48:25,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390118602] [2021-07-09 17:48:25,080 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:48:25,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:48:25,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:48:25,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:48:25,080 INFO L87 Difference]: Start difference. First operand 6152 states and 21512 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:26,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:48:26,100 INFO L93 Difference]: Finished difference Result 6747 states and 23504 transitions. [2021-07-09 17:48:26,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-07-09 17:48:26,100 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:48:26,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:48:26,114 INFO L225 Difference]: With dead ends: 6747 [2021-07-09 17:48:26,114 INFO L226 Difference]: Without dead ends: 6602 [2021-07-09 17:48:26,115 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 692.9ms TimeCoverageRelationStatistics Valid=186, Invalid=1794, Unknown=0, NotChecked=0, Total=1980 [2021-07-09 17:48:26,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6602 states. [2021-07-09 17:48:26,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6602 to 6164. [2021-07-09 17:48:26,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6164 states, 6163 states have (on average 3.495375628752231) internal successors, (21542), 6163 states have internal predecessors, (21542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:26,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6164 states to 6164 states and 21542 transitions. [2021-07-09 17:48:26,214 INFO L78 Accepts]: Start accepts. Automaton has 6164 states and 21542 transitions. Word has length 47 [2021-07-09 17:48:26,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:48:26,214 INFO L482 AbstractCegarLoop]: Abstraction has 6164 states and 21542 transitions. [2021-07-09 17:48:26,214 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:26,214 INFO L276 IsEmpty]: Start isEmpty. Operand 6164 states and 21542 transitions. [2021-07-09 17:48:26,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:48:26,223 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:48:26,223 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:48:26,223 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2021-07-09 17:48:26,223 INFO L430 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:48:26,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:48:26,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1077697674, now seen corresponding path program 134 times [2021-07-09 17:48:26,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:48:26,224 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838988880] [2021-07-09 17:48:26,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:48:26,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:48:26,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:48:26,463 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:48:26,463 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838988880] [2021-07-09 17:48:26,463 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838988880] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:48:26,463 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:48:26,463 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:48:26,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549382166] [2021-07-09 17:48:26,463 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:48:26,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:48:26,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:48:26,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:48:26,464 INFO L87 Difference]: Start difference. First operand 6164 states and 21542 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:27,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:48:27,488 INFO L93 Difference]: Finished difference Result 6867 states and 23807 transitions. [2021-07-09 17:48:27,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-07-09 17:48:27,488 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:48:27,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:48:27,502 INFO L225 Difference]: With dead ends: 6867 [2021-07-09 17:48:27,503 INFO L226 Difference]: Without dead ends: 6770 [2021-07-09 17:48:27,503 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 688.2ms TimeCoverageRelationStatistics Valid=168, Invalid=1638, Unknown=0, NotChecked=0, Total=1806 [2021-07-09 17:48:27,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6770 states. [2021-07-09 17:48:27,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6770 to 6170. [2021-07-09 17:48:27,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6170 states, 6169 states have (on average 3.4944075214783594) internal successors, (21557), 6169 states have internal predecessors, (21557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:27,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6170 states to 6170 states and 21557 transitions. [2021-07-09 17:48:27,602 INFO L78 Accepts]: Start accepts. Automaton has 6170 states and 21557 transitions. Word has length 47 [2021-07-09 17:48:27,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:48:27,602 INFO L482 AbstractCegarLoop]: Abstraction has 6170 states and 21557 transitions. [2021-07-09 17:48:27,602 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:27,602 INFO L276 IsEmpty]: Start isEmpty. Operand 6170 states and 21557 transitions. [2021-07-09 17:48:27,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:48:27,611 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:48:27,611 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:48:27,611 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2021-07-09 17:48:27,612 INFO L430 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:48:27,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:48:27,612 INFO L82 PathProgramCache]: Analyzing trace with hash -647722836, now seen corresponding path program 135 times [2021-07-09 17:48:27,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:48:27,612 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192688130] [2021-07-09 17:48:27,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:48:27,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:48:27,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:48:27,827 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:48:27,827 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192688130] [2021-07-09 17:48:27,827 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192688130] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:48:27,827 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:48:27,827 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:48:27,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762786854] [2021-07-09 17:48:27,827 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:48:27,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:48:27,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:48:27,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:48:27,828 INFO L87 Difference]: Start difference. First operand 6170 states and 21557 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:28,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:48:28,773 INFO L93 Difference]: Finished difference Result 6768 states and 23502 transitions. [2021-07-09 17:48:28,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-07-09 17:48:28,774 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:48:28,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:48:28,788 INFO L225 Difference]: With dead ends: 6768 [2021-07-09 17:48:28,788 INFO L226 Difference]: Without dead ends: 6639 [2021-07-09 17:48:28,789 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 627.6ms TimeCoverageRelationStatistics Valid=159, Invalid=1563, Unknown=0, NotChecked=0, Total=1722 [2021-07-09 17:48:28,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6639 states. [2021-07-09 17:48:28,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6639 to 6132. [2021-07-09 17:48:28,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6132 states, 6131 states have (on average 3.501549502528136) internal successors, (21468), 6131 states have internal predecessors, (21468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:28,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6132 states to 6132 states and 21468 transitions. [2021-07-09 17:48:28,888 INFO L78 Accepts]: Start accepts. Automaton has 6132 states and 21468 transitions. Word has length 47 [2021-07-09 17:48:28,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:48:28,889 INFO L482 AbstractCegarLoop]: Abstraction has 6132 states and 21468 transitions. [2021-07-09 17:48:28,889 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:28,889 INFO L276 IsEmpty]: Start isEmpty. Operand 6132 states and 21468 transitions. [2021-07-09 17:48:28,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:48:28,897 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:48:28,897 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:48:28,897 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2021-07-09 17:48:28,898 INFO L430 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:48:28,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:48:28,898 INFO L82 PathProgramCache]: Analyzing trace with hash -669605316, now seen corresponding path program 136 times [2021-07-09 17:48:28,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:48:28,898 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449448340] [2021-07-09 17:48:28,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:48:28,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:48:29,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:48:29,092 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:48:29,092 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449448340] [2021-07-09 17:48:29,092 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449448340] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:48:29,092 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:48:29,092 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 17:48:29,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021467360] [2021-07-09 17:48:29,093 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 17:48:29,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:48:29,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 17:48:29,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-07-09 17:48:29,093 INFO L87 Difference]: Start difference. First operand 6132 states and 21468 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) [2021-07-09 17:48:29,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:48:29,974 INFO L93 Difference]: Finished difference Result 6669 states and 23217 transitions. [2021-07-09 17:48:29,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-09 17:48:29,974 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 [2021-07-09 17:48:29,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:48:29,988 INFO L225 Difference]: With dead ends: 6669 [2021-07-09 17:48:29,988 INFO L226 Difference]: Without dead ends: 6532 [2021-07-09 17:48:29,988 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 551.0ms TimeCoverageRelationStatistics Valid=143, Invalid=1263, Unknown=0, NotChecked=0, Total=1406 [2021-07-09 17:48:30,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6532 states. [2021-07-09 17:48:30,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6532 to 6148. [2021-07-09 17:48:30,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6148 states, 6147 states have (on average 3.5002440214738897) internal successors, (21516), 6147 states have internal predecessors, (21516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:30,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6148 states to 6148 states and 21516 transitions. [2021-07-09 17:48:30,087 INFO L78 Accepts]: Start accepts. Automaton has 6148 states and 21516 transitions. Word has length 47 [2021-07-09 17:48:30,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:48:30,087 INFO L482 AbstractCegarLoop]: Abstraction has 6148 states and 21516 transitions. [2021-07-09 17:48:30,087 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) [2021-07-09 17:48:30,087 INFO L276 IsEmpty]: Start isEmpty. Operand 6148 states and 21516 transitions. [2021-07-09 17:48:30,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:48:30,096 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:48:30,096 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:48:30,096 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2021-07-09 17:48:30,097 INFO L430 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:48:30,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:48:30,097 INFO L82 PathProgramCache]: Analyzing trace with hash 848090906, now seen corresponding path program 137 times [2021-07-09 17:48:30,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:48:30,097 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396520307] [2021-07-09 17:48:30,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:48:30,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:48:30,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:48:30,298 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:48:30,298 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396520307] [2021-07-09 17:48:30,298 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396520307] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:48:30,298 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:48:30,298 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:48:30,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998908752] [2021-07-09 17:48:30,298 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:48:30,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:48:30,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:48:30,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:48:30,299 INFO L87 Difference]: Start difference. First operand 6148 states and 21516 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) [2021-07-09 17:48:31,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:48:31,204 INFO L93 Difference]: Finished difference Result 6728 states and 23376 transitions. [2021-07-09 17:48:31,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-07-09 17:48:31,204 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 [2021-07-09 17:48:31,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:48:31,218 INFO L225 Difference]: With dead ends: 6728 [2021-07-09 17:48:31,218 INFO L226 Difference]: Without dead ends: 6639 [2021-07-09 17:48:31,218 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 605.4ms TimeCoverageRelationStatistics Valid=159, Invalid=1481, Unknown=0, NotChecked=0, Total=1640 [2021-07-09 17:48:31,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6639 states. [2021-07-09 17:48:31,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6639 to 6212. [2021-07-09 17:48:31,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6212 states, 6211 states have (on average 3.49895346965062) internal successors, (21732), 6211 states have internal predecessors, (21732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:31,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6212 states to 6212 states and 21732 transitions. [2021-07-09 17:48:31,318 INFO L78 Accepts]: Start accepts. Automaton has 6212 states and 21732 transitions. Word has length 47 [2021-07-09 17:48:31,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:48:31,318 INFO L482 AbstractCegarLoop]: Abstraction has 6212 states and 21732 transitions. [2021-07-09 17:48:31,318 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) [2021-07-09 17:48:31,318 INFO L276 IsEmpty]: Start isEmpty. Operand 6212 states and 21732 transitions. [2021-07-09 17:48:31,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:48:31,327 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:48:31,327 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:48:31,327 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2021-07-09 17:48:31,327 INFO L430 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:48:31,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:48:31,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1282120252, now seen corresponding path program 138 times [2021-07-09 17:48:31,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:48:31,328 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403589470] [2021-07-09 17:48:31,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:48:31,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:48:31,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:48:31,529 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:48:31,529 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403589470] [2021-07-09 17:48:31,529 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403589470] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:48:31,529 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:48:31,529 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:48:31,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995920247] [2021-07-09 17:48:31,530 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:48:31,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:48:31,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:48:31,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:48:31,530 INFO L87 Difference]: Start difference. First operand 6212 states and 21732 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) [2021-07-09 17:48:32,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:48:32,460 INFO L93 Difference]: Finished difference Result 6637 states and 23105 transitions. [2021-07-09 17:48:32,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-07-09 17:48:32,460 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 [2021-07-09 17:48:32,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:48:32,473 INFO L225 Difference]: With dead ends: 6637 [2021-07-09 17:48:32,473 INFO L226 Difference]: Without dead ends: 6508 [2021-07-09 17:48:32,473 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 582.1ms TimeCoverageRelationStatistics Valid=151, Invalid=1409, Unknown=0, NotChecked=0, Total=1560 [2021-07-09 17:48:32,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6508 states. [2021-07-09 17:48:32,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6508 to 6212. [2021-07-09 17:48:32,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6212 states, 6211 states have (on average 3.49508935759137) internal successors, (21708), 6211 states have internal predecessors, (21708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:32,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6212 states to 6212 states and 21708 transitions. [2021-07-09 17:48:32,570 INFO L78 Accepts]: Start accepts. Automaton has 6212 states and 21708 transitions. Word has length 47 [2021-07-09 17:48:32,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:48:32,570 INFO L482 AbstractCegarLoop]: Abstraction has 6212 states and 21708 transitions. [2021-07-09 17:48:32,570 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) [2021-07-09 17:48:32,570 INFO L276 IsEmpty]: Start isEmpty. Operand 6212 states and 21708 transitions. [2021-07-09 17:48:32,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:48:32,580 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:48:32,580 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:48:32,580 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2021-07-09 17:48:32,580 INFO L430 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:48:32,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:48:32,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1451413558, now seen corresponding path program 139 times [2021-07-09 17:48:32,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:48:32,580 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327077266] [2021-07-09 17:48:32,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:48:32,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:48:32,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:48:32,781 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:48:32,781 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327077266] [2021-07-09 17:48:32,781 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327077266] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:48:32,781 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:48:32,781 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:48:32,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043186417] [2021-07-09 17:48:32,781 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:48:32,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:48:32,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:48:32,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:48:32,782 INFO L87 Difference]: Start difference. First operand 6212 states and 21708 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) [2021-07-09 17:48:33,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:48:33,715 INFO L93 Difference]: Finished difference Result 6680 states and 23216 transitions. [2021-07-09 17:48:33,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-07-09 17:48:33,715 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 [2021-07-09 17:48:33,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:48:33,729 INFO L225 Difference]: With dead ends: 6680 [2021-07-09 17:48:33,729 INFO L226 Difference]: Without dead ends: 6591 [2021-07-09 17:48:33,730 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 630.2ms TimeCoverageRelationStatistics Valid=160, Invalid=1480, Unknown=0, NotChecked=0, Total=1640 [2021-07-09 17:48:33,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6591 states. [2021-07-09 17:48:33,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6591 to 6212. [2021-07-09 17:48:33,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6212 states, 6211 states have (on average 3.49508935759137) internal successors, (21708), 6211 states have internal predecessors, (21708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:33,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6212 states to 6212 states and 21708 transitions. [2021-07-09 17:48:33,830 INFO L78 Accepts]: Start accepts. Automaton has 6212 states and 21708 transitions. Word has length 47 [2021-07-09 17:48:33,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:48:33,830 INFO L482 AbstractCegarLoop]: Abstraction has 6212 states and 21708 transitions. [2021-07-09 17:48:33,830 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) [2021-07-09 17:48:33,830 INFO L276 IsEmpty]: Start isEmpty. Operand 6212 states and 21708 transitions. [2021-07-09 17:48:33,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:48:33,840 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:48:33,840 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:48:33,840 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2021-07-09 17:48:33,840 INFO L430 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:48:33,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:48:33,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1017384212, now seen corresponding path program 140 times [2021-07-09 17:48:33,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:48:33,840 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584189243] [2021-07-09 17:48:33,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:48:33,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:48:34,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:48:34,039 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:48:34,039 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584189243] [2021-07-09 17:48:34,039 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584189243] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:48:34,039 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:48:34,039 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:48:34,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207779877] [2021-07-09 17:48:34,040 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:48:34,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:48:34,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:48:34,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:48:34,040 INFO L87 Difference]: Start difference. First operand 6212 states and 21708 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) [2021-07-09 17:48:34,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:48:34,955 INFO L93 Difference]: Finished difference Result 6688 states and 23244 transitions. [2021-07-09 17:48:34,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-07-09 17:48:34,955 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 [2021-07-09 17:48:34,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:48:34,968 INFO L225 Difference]: With dead ends: 6688 [2021-07-09 17:48:34,968 INFO L226 Difference]: Without dead ends: 6583 [2021-07-09 17:48:34,969 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 629.0ms TimeCoverageRelationStatistics Valid=155, Invalid=1405, Unknown=0, NotChecked=0, Total=1560 [2021-07-09 17:48:34,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6583 states. [2021-07-09 17:48:35,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6583 to 6228. [2021-07-09 17:48:35,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6228 states, 6227 states have (on average 3.4938172474706923) internal successors, (21756), 6227 states have internal predecessors, (21756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:35,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6228 states to 6228 states and 21756 transitions. [2021-07-09 17:48:35,067 INFO L78 Accepts]: Start accepts. Automaton has 6228 states and 21756 transitions. Word has length 47 [2021-07-09 17:48:35,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:48:35,067 INFO L482 AbstractCegarLoop]: Abstraction has 6228 states and 21756 transitions. [2021-07-09 17:48:35,067 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) [2021-07-09 17:48:35,067 INFO L276 IsEmpty]: Start isEmpty. Operand 6228 states and 21756 transitions. [2021-07-09 17:48:35,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:48:35,077 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:48:35,077 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:48:35,077 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2021-07-09 17:48:35,077 INFO L430 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:48:35,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:48:35,077 INFO L82 PathProgramCache]: Analyzing trace with hash 255549496, now seen corresponding path program 141 times [2021-07-09 17:48:35,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:48:35,077 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659574732] [2021-07-09 17:48:35,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:48:35,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:48:35,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:48:35,275 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:48:35,275 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659574732] [2021-07-09 17:48:35,275 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659574732] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:48:35,275 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:48:35,275 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:48:35,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131960267] [2021-07-09 17:48:35,275 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:48:35,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:48:35,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:48:35,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:48:35,276 INFO L87 Difference]: Start difference. First operand 6228 states and 21756 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) [2021-07-09 17:48:36,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:48:36,118 INFO L93 Difference]: Finished difference Result 6581 states and 22917 transitions. [2021-07-09 17:48:36,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-09 17:48:36,118 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 [2021-07-09 17:48:36,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:48:36,131 INFO L225 Difference]: With dead ends: 6581 [2021-07-09 17:48:36,131 INFO L226 Difference]: Without dead ends: 6312 [2021-07-09 17:48:36,131 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 561.3ms TimeCoverageRelationStatistics Valid=143, Invalid=1263, Unknown=0, NotChecked=0, Total=1406 [2021-07-09 17:48:36,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6312 states. [2021-07-09 17:48:36,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6312 to 6104. [2021-07-09 17:48:36,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6104 states, 6103 states have (on average 3.5045059806652468) internal successors, (21388), 6103 states have internal predecessors, (21388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:36,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6104 states to 6104 states and 21388 transitions. [2021-07-09 17:48:36,226 INFO L78 Accepts]: Start accepts. Automaton has 6104 states and 21388 transitions. Word has length 47 [2021-07-09 17:48:36,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:48:36,226 INFO L482 AbstractCegarLoop]: Abstraction has 6104 states and 21388 transitions. [2021-07-09 17:48:36,226 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) [2021-07-09 17:48:36,226 INFO L276 IsEmpty]: Start isEmpty. Operand 6104 states and 21388 transitions. [2021-07-09 17:48:36,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:48:36,235 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:48:36,235 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:48:36,235 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2021-07-09 17:48:36,235 INFO L430 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:48:36,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:48:36,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1913602850, now seen corresponding path program 142 times [2021-07-09 17:48:36,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:48:36,235 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107367672] [2021-07-09 17:48:36,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:48:36,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:48:36,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:48:36,433 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:48:36,433 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107367672] [2021-07-09 17:48:36,433 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107367672] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:48:36,434 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:48:36,434 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:48:36,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765014166] [2021-07-09 17:48:36,434 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:48:36,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:48:36,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:48:36,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:48:36,434 INFO L87 Difference]: Start difference. First operand 6104 states and 21388 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) [2021-07-09 17:48:39,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:48:39,410 INFO L93 Difference]: Finished difference Result 10135 states and 35578 transitions. [2021-07-09 17:48:39,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-07-09 17:48:39,410 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 [2021-07-09 17:48:39,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:48:39,433 INFO L225 Difference]: With dead ends: 10135 [2021-07-09 17:48:39,433 INFO L226 Difference]: Without dead ends: 9908 [2021-07-09 17:48:39,434 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1678 ImplicationChecksByTransitivity, 1668.9ms TimeCoverageRelationStatistics Valid=518, Invalid=5334, Unknown=0, NotChecked=0, Total=5852 [2021-07-09 17:48:39,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9908 states. [2021-07-09 17:48:39,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9908 to 6307. [2021-07-09 17:48:39,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6307 states, 6306 states have (on average 3.5041230574056454) internal successors, (22097), 6306 states have internal predecessors, (22097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:39,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6307 states to 6307 states and 22097 transitions. [2021-07-09 17:48:39,582 INFO L78 Accepts]: Start accepts. Automaton has 6307 states and 22097 transitions. Word has length 47 [2021-07-09 17:48:39,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:48:39,582 INFO L482 AbstractCegarLoop]: Abstraction has 6307 states and 22097 transitions. [2021-07-09 17:48:39,582 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) [2021-07-09 17:48:39,582 INFO L276 IsEmpty]: Start isEmpty. Operand 6307 states and 22097 transitions. [2021-07-09 17:48:39,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:48:39,592 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:48:39,592 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:48:39,592 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2021-07-09 17:48:39,592 INFO L430 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:48:39,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:48:39,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1030615842, now seen corresponding path program 143 times [2021-07-09 17:48:39,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:48:39,592 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863709257] [2021-07-09 17:48:39,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:48:39,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:48:39,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:48:39,792 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:48:39,792 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863709257] [2021-07-09 17:48:39,792 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863709257] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:48:39,792 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:48:39,792 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:48:39,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960091375] [2021-07-09 17:48:39,793 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:48:39,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:48:39,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:48:39,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:48:39,793 INFO L87 Difference]: Start difference. First operand 6307 states and 22097 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) [2021-07-09 17:48:45,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:48:45,057 INFO L93 Difference]: Finished difference Result 12884 states and 45400 transitions. [2021-07-09 17:48:45,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2021-07-09 17:48:45,057 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 [2021-07-09 17:48:45,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:48:45,085 INFO L225 Difference]: With dead ends: 12884 [2021-07-09 17:48:45,085 INFO L226 Difference]: Without dead ends: 12525 [2021-07-09 17:48:45,087 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5304 ImplicationChecksByTransitivity, 3339.1ms TimeCoverageRelationStatistics Valid=1263, Invalid=13743, Unknown=0, NotChecked=0, Total=15006 [2021-07-09 17:48:45,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12525 states. [2021-07-09 17:48:45,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12525 to 7156. [2021-07-09 17:48:45,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7156 states, 7155 states have (on average 3.527183787561146) internal successors, (25237), 7155 states have internal predecessors, (25237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:45,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7156 states to 7156 states and 25237 transitions. [2021-07-09 17:48:45,272 INFO L78 Accepts]: Start accepts. Automaton has 7156 states and 25237 transitions. Word has length 47 [2021-07-09 17:48:45,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:48:45,272 INFO L482 AbstractCegarLoop]: Abstraction has 7156 states and 25237 transitions. [2021-07-09 17:48:45,272 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) [2021-07-09 17:48:45,272 INFO L276 IsEmpty]: Start isEmpty. Operand 7156 states and 25237 transitions. [2021-07-09 17:48:45,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:48:45,283 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:48:45,283 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:48:45,283 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2021-07-09 17:48:45,283 INFO L430 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:48:45,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:48:45,283 INFO L82 PathProgramCache]: Analyzing trace with hash 179963934, now seen corresponding path program 144 times [2021-07-09 17:48:45,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:48:45,284 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529779265] [2021-07-09 17:48:45,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:48:45,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:48:45,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:48:45,489 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:48:45,489 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529779265] [2021-07-09 17:48:45,489 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529779265] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:48:45,489 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:48:45,489 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:48:45,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091202860] [2021-07-09 17:48:45,489 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:48:45,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:48:45,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:48:45,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:48:45,489 INFO L87 Difference]: Start difference. First operand 7156 states and 25237 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) [2021-07-09 17:48:49,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:48:49,887 INFO L93 Difference]: Finished difference Result 12739 states and 45281 transitions. [2021-07-09 17:48:49,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2021-07-09 17:48:49,887 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 [2021-07-09 17:48:49,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:48:49,916 INFO L225 Difference]: With dead ends: 12739 [2021-07-09 17:48:49,916 INFO L226 Difference]: Without dead ends: 12536 [2021-07-09 17:48:49,917 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4008 ImplicationChecksByTransitivity, 2657.2ms TimeCoverageRelationStatistics Valid=943, Invalid=10829, Unknown=0, NotChecked=0, Total=11772 [2021-07-09 17:48:49,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12536 states. [2021-07-09 17:48:50,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12536 to 7188. [2021-07-09 17:48:50,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7188 states, 7187 states have (on average 3.5301238347015444) internal successors, (25371), 7187 states have internal predecessors, (25371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:50,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7188 states to 7188 states and 25371 transitions. [2021-07-09 17:48:50,069 INFO L78 Accepts]: Start accepts. Automaton has 7188 states and 25371 transitions. Word has length 47 [2021-07-09 17:48:50,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:48:50,069 INFO L482 AbstractCegarLoop]: Abstraction has 7188 states and 25371 transitions. [2021-07-09 17:48:50,069 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) [2021-07-09 17:48:50,069 INFO L276 IsEmpty]: Start isEmpty. Operand 7188 states and 25371 transitions. [2021-07-09 17:48:50,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:48:50,080 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:48:50,080 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:48:50,080 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2021-07-09 17:48:50,080 INFO L430 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:48:50,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:48:50,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1939195810, now seen corresponding path program 145 times [2021-07-09 17:48:50,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:48:50,080 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939685262] [2021-07-09 17:48:50,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:48:50,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:48:50,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:48:50,267 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:48:50,267 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939685262] [2021-07-09 17:48:50,267 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939685262] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:48:50,267 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:48:50,267 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 17:48:50,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435635466] [2021-07-09 17:48:50,267 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 17:48:50,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:48:50,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 17:48:50,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-07-09 17:48:50,267 INFO L87 Difference]: Start difference. First operand 7188 states and 25371 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) [2021-07-09 17:48:54,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:48:54,546 INFO L93 Difference]: Finished difference Result 11886 states and 41418 transitions. [2021-07-09 17:48:54,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-07-09 17:48:54,546 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 [2021-07-09 17:48:54,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:48:54,570 INFO L225 Difference]: With dead ends: 11886 [2021-07-09 17:48:54,570 INFO L226 Difference]: Without dead ends: 11431 [2021-07-09 17:48:54,571 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3550 ImplicationChecksByTransitivity, 2577.6ms TimeCoverageRelationStatistics Valid=883, Invalid=9623, Unknown=0, NotChecked=0, Total=10506 [2021-07-09 17:48:54,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11431 states. [2021-07-09 17:48:54,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11431 to 7463. [2021-07-09 17:48:54,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7463 states, 7462 states have (on average 3.528142589118199) internal successors, (26327), 7462 states have internal predecessors, (26327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:48:54,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7463 states to 7463 states and 26327 transitions. [2021-07-09 17:48:54,724 INFO L78 Accepts]: Start accepts. Automaton has 7463 states and 26327 transitions. Word has length 47 [2021-07-09 17:48:54,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:48:54,724 INFO L482 AbstractCegarLoop]: Abstraction has 7463 states and 26327 transitions. [2021-07-09 17:48:54,724 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) [2021-07-09 17:48:54,724 INFO L276 IsEmpty]: Start isEmpty. Operand 7463 states and 26327 transitions. [2021-07-09 17:48:54,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:48:54,736 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:48:54,737 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:48:54,737 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2021-07-09 17:48:54,737 INFO L430 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:48:54,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:48:54,737 INFO L82 PathProgramCache]: Analyzing trace with hash 376897024, now seen corresponding path program 146 times [2021-07-09 17:48:54,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:48:54,737 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602211641] [2021-07-09 17:48:54,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:48:54,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:48:54,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:48:54,945 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:48:54,945 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602211641] [2021-07-09 17:48:54,945 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602211641] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:48:54,945 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:48:54,945 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:48:54,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109620983] [2021-07-09 17:48:54,946 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:48:54,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:48:54,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:48:54,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:48:54,946 INFO L87 Difference]: Start difference. First operand 7463 states and 26327 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) [2021-07-09 17:49:00,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:49:00,520 INFO L93 Difference]: Finished difference Result 13404 states and 47111 transitions. [2021-07-09 17:49:00,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2021-07-09 17:49:00,521 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 [2021-07-09 17:49:00,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:49:00,553 INFO L225 Difference]: With dead ends: 13404 [2021-07-09 17:49:00,553 INFO L226 Difference]: Without dead ends: 13078 [2021-07-09 17:49:00,554 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5184 ImplicationChecksByTransitivity, 3296.8ms TimeCoverageRelationStatistics Valid=1198, Invalid=13564, Unknown=0, NotChecked=0, Total=14762 [2021-07-09 17:49:00,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13078 states. [2021-07-09 17:49:00,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13078 to 7625. [2021-07-09 17:49:00,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7625 states, 7624 states have (on average 3.536332633788038) internal successors, (26961), 7624 states have internal predecessors, (26961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:49:00,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7625 states to 7625 states and 26961 transitions. [2021-07-09 17:49:00,721 INFO L78 Accepts]: Start accepts. Automaton has 7625 states and 26961 transitions. Word has length 47 [2021-07-09 17:49:00,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:49:00,721 INFO L482 AbstractCegarLoop]: Abstraction has 7625 states and 26961 transitions. [2021-07-09 17:49:00,721 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) [2021-07-09 17:49:00,721 INFO L276 IsEmpty]: Start isEmpty. Operand 7625 states and 26961 transitions. [2021-07-09 17:49:00,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:49:00,734 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:49:00,734 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:49:00,734 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2021-07-09 17:49:00,734 INFO L430 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:49:00,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:49:00,734 INFO L82 PathProgramCache]: Analyzing trace with hash -473754884, now seen corresponding path program 147 times [2021-07-09 17:49:00,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:49:00,734 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145209087] [2021-07-09 17:49:00,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:49:00,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:49:00,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:49:00,933 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:49:00,933 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145209087] [2021-07-09 17:49:00,934 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145209087] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:49:00,934 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:49:00,934 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:49:00,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964178583] [2021-07-09 17:49:00,934 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:49:00,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:49:00,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:49:00,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:49:00,934 INFO L87 Difference]: Start difference. First operand 7625 states and 26961 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) [2021-07-09 17:49:06,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:49:06,098 INFO L93 Difference]: Finished difference Result 13323 states and 47094 transitions. [2021-07-09 17:49:06,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2021-07-09 17:49:06,098 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 [2021-07-09 17:49:06,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:49:06,130 INFO L225 Difference]: With dead ends: 13323 [2021-07-09 17:49:06,130 INFO L226 Difference]: Without dead ends: 13076 [2021-07-09 17:49:06,130 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4525 ImplicationChecksByTransitivity, 3066.4ms TimeCoverageRelationStatistics Valid=1082, Invalid=12028, Unknown=0, NotChecked=0, Total=13110 [2021-07-09 17:49:06,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13076 states. [2021-07-09 17:49:06,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13076 to 7557. [2021-07-09 17:49:06,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7557 states, 7556 states have (on average 3.5428798305982) internal successors, (26770), 7556 states have internal predecessors, (26770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:49:06,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7557 states to 7557 states and 26770 transitions. [2021-07-09 17:49:06,292 INFO L78 Accepts]: Start accepts. Automaton has 7557 states and 26770 transitions. Word has length 47 [2021-07-09 17:49:06,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:49:06,292 INFO L482 AbstractCegarLoop]: Abstraction has 7557 states and 26770 transitions. [2021-07-09 17:49:06,292 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) [2021-07-09 17:49:06,292 INFO L276 IsEmpty]: Start isEmpty. Operand 7557 states and 26770 transitions. [2021-07-09 17:49:06,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:49:06,304 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:49:06,304 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:49:06,304 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2021-07-09 17:49:06,304 INFO L430 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:49:06,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:49:06,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1813193950, now seen corresponding path program 148 times [2021-07-09 17:49:06,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:49:06,305 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466768469] [2021-07-09 17:49:06,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:49:06,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:49:06,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:49:06,522 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:49:06,522 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466768469] [2021-07-09 17:49:06,522 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466768469] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:49:06,522 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:49:06,522 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:49:06,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721744201] [2021-07-09 17:49:06,522 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:49:06,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:49:06,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:49:06,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:49:06,522 INFO L87 Difference]: Start difference. First operand 7557 states and 26770 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:49:09,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:49:09,910 INFO L93 Difference]: Finished difference Result 12055 states and 42495 transitions. [2021-07-09 17:49:09,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-07-09 17:49:09,910 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:49:09,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:49:09,937 INFO L225 Difference]: With dead ends: 12055 [2021-07-09 17:49:09,937 INFO L226 Difference]: Without dead ends: 11928 [2021-07-09 17:49:09,937 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2179 ImplicationChecksByTransitivity, 1945.3ms TimeCoverageRelationStatistics Valid=605, Invalid=6705, Unknown=0, NotChecked=0, Total=7310 [2021-07-09 17:49:09,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11928 states. [2021-07-09 17:49:10,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11928 to 7585. [2021-07-09 17:49:10,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7585 states, 7584 states have (on average 3.539820675105485) internal successors, (26846), 7584 states have internal predecessors, (26846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:49:10,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7585 states to 7585 states and 26846 transitions. [2021-07-09 17:49:10,094 INFO L78 Accepts]: Start accepts. Automaton has 7585 states and 26846 transitions. Word has length 47 [2021-07-09 17:49:10,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:49:10,094 INFO L482 AbstractCegarLoop]: Abstraction has 7585 states and 26846 transitions. [2021-07-09 17:49:10,094 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:49:10,094 INFO L276 IsEmpty]: Start isEmpty. Operand 7585 states and 26846 transitions. [2021-07-09 17:49:10,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:49:10,106 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:49:10,106 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:49:10,106 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2021-07-09 17:49:10,107 INFO L430 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:49:10,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:49:10,107 INFO L82 PathProgramCache]: Analyzing trace with hash 462445346, now seen corresponding path program 149 times [2021-07-09 17:49:10,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:49:10,107 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529909980] [2021-07-09 17:49:10,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:49:10,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:49:10,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:49:10,330 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:49:10,330 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529909980] [2021-07-09 17:49:10,330 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529909980] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:49:10,330 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:49:10,330 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:49:10,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278630902] [2021-07-09 17:49:10,330 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:49:10,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:49:10,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:49:10,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:49:10,330 INFO L87 Difference]: Start difference. First operand 7585 states and 26846 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:49:15,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:49:15,993 INFO L93 Difference]: Finished difference Result 14119 states and 49890 transitions. [2021-07-09 17:49:15,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2021-07-09 17:49:15,993 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:49:15,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:49:16,026 INFO L225 Difference]: With dead ends: 14119 [2021-07-09 17:49:16,026 INFO L226 Difference]: Without dead ends: 14030 [2021-07-09 17:49:16,027 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5739 ImplicationChecksByTransitivity, 3560.2ms TimeCoverageRelationStatistics Valid=1316, Invalid=14940, Unknown=0, NotChecked=0, Total=16256 [2021-07-09 17:49:16,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14030 states. [2021-07-09 17:49:16,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14030 to 7583. [2021-07-09 17:49:16,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7583 states, 7582 states have (on average 3.541545766288578) internal successors, (26852), 7582 states have internal predecessors, (26852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:49:16,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7583 states to 7583 states and 26852 transitions. [2021-07-09 17:49:16,199 INFO L78 Accepts]: Start accepts. Automaton has 7583 states and 26852 transitions. Word has length 47 [2021-07-09 17:49:16,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:49:16,199 INFO L482 AbstractCegarLoop]: Abstraction has 7583 states and 26852 transitions. [2021-07-09 17:49:16,199 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:49:16,199 INFO L276 IsEmpty]: Start isEmpty. Operand 7583 states and 26852 transitions. [2021-07-09 17:49:16,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:49:16,211 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:49:16,211 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:49:16,211 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2021-07-09 17:49:16,212 INFO L430 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:49:16,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:49:16,212 INFO L82 PathProgramCache]: Analyzing trace with hash -388206562, now seen corresponding path program 150 times [2021-07-09 17:49:16,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:49:16,212 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315957715] [2021-07-09 17:49:16,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:49:16,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:49:16,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:49:16,440 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:49:16,440 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315957715] [2021-07-09 17:49:16,441 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315957715] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:49:16,441 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:49:16,441 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:49:16,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840583331] [2021-07-09 17:49:16,441 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:49:16,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:49:16,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:49:16,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:49:16,441 INFO L87 Difference]: Start difference. First operand 7583 states and 26852 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:49:21,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:49:21,434 INFO L93 Difference]: Finished difference Result 13896 states and 49472 transitions. [2021-07-09 17:49:21,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2021-07-09 17:49:21,434 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:49:21,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:49:21,467 INFO L225 Difference]: With dead ends: 13896 [2021-07-09 17:49:21,467 INFO L226 Difference]: Without dead ends: 13793 [2021-07-09 17:49:21,468 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4760 ImplicationChecksByTransitivity, 2956.8ms TimeCoverageRelationStatistics Valid=1039, Invalid=12767, Unknown=0, NotChecked=0, Total=13806 [2021-07-09 17:49:21,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13793 states. [2021-07-09 17:49:21,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13793 to 7563. [2021-07-09 17:49:21,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7563 states, 7562 states have (on average 3.54350700872785) internal successors, (26796), 7562 states have internal predecessors, (26796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:49:21,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7563 states to 7563 states and 26796 transitions. [2021-07-09 17:49:21,643 INFO L78 Accepts]: Start accepts. Automaton has 7563 states and 26796 transitions. Word has length 47 [2021-07-09 17:49:21,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:49:21,643 INFO L482 AbstractCegarLoop]: Abstraction has 7563 states and 26796 transitions. [2021-07-09 17:49:21,643 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:49:21,643 INFO L276 IsEmpty]: Start isEmpty. Operand 7563 states and 26796 transitions. [2021-07-09 17:49:21,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:49:21,656 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:49:21,656 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:49:21,656 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2021-07-09 17:49:21,656 INFO L430 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:49:21,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:49:21,656 INFO L82 PathProgramCache]: Analyzing trace with hash 200978940, now seen corresponding path program 151 times [2021-07-09 17:49:21,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:49:21,656 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777516228] [2021-07-09 17:49:21,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:49:21,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:49:21,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:49:21,873 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:49:21,873 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777516228] [2021-07-09 17:49:21,873 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777516228] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:49:21,873 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:49:21,873 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:49:21,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844471664] [2021-07-09 17:49:21,873 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:49:21,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:49:21,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:49:21,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:49:21,874 INFO L87 Difference]: Start difference. First operand 7563 states and 26796 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:49:24,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:49:24,684 INFO L93 Difference]: Finished difference Result 11395 states and 40165 transitions. [2021-07-09 17:49:24,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-07-09 17:49:24,684 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:49:24,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:49:24,711 INFO L225 Difference]: With dead ends: 11395 [2021-07-09 17:49:24,711 INFO L226 Difference]: Without dead ends: 11268 [2021-07-09 17:49:24,712 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1535 ImplicationChecksByTransitivity, 1552.8ms TimeCoverageRelationStatistics Valid=468, Invalid=5082, Unknown=0, NotChecked=0, Total=5550 [2021-07-09 17:49:24,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11268 states. [2021-07-09 17:49:24,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11268 to 7585. [2021-07-09 17:49:24,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7585 states, 7584 states have (on average 3.5403481012658227) internal successors, (26850), 7584 states have internal predecessors, (26850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:49:24,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7585 states to 7585 states and 26850 transitions. [2021-07-09 17:49:24,872 INFO L78 Accepts]: Start accepts. Automaton has 7585 states and 26850 transitions. Word has length 47 [2021-07-09 17:49:24,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:49:24,872 INFO L482 AbstractCegarLoop]: Abstraction has 7585 states and 26850 transitions. [2021-07-09 17:49:24,872 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:49:24,872 INFO L276 IsEmpty]: Start isEmpty. Operand 7585 states and 26850 transitions. [2021-07-09 17:49:24,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:49:24,884 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:49:24,884 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:49:24,884 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2021-07-09 17:49:24,884 INFO L430 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:49:24,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:49:24,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1170218466, now seen corresponding path program 152 times [2021-07-09 17:49:24,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:49:24,885 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097175772] [2021-07-09 17:49:24,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:49:24,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:49:25,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:49:25,098 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:49:25,098 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097175772] [2021-07-09 17:49:25,098 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097175772] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:49:25,098 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:49:25,098 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:49:25,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541458220] [2021-07-09 17:49:25,099 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:49:25,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:49:25,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:49:25,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:49:25,099 INFO L87 Difference]: Start difference. First operand 7585 states and 26850 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) [2021-07-09 17:49:27,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:49:27,619 INFO L93 Difference]: Finished difference Result 11183 states and 39359 transitions. [2021-07-09 17:49:27,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-07-09 17:49:27,619 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 [2021-07-09 17:49:27,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:49:27,645 INFO L225 Difference]: With dead ends: 11183 [2021-07-09 17:49:27,645 INFO L226 Difference]: Without dead ends: 11083 [2021-07-09 17:49:27,646 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1327 ImplicationChecksByTransitivity, 1364.0ms TimeCoverageRelationStatistics Valid=430, Invalid=4400, Unknown=0, NotChecked=0, Total=4830 [2021-07-09 17:49:27,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11083 states. [2021-07-09 17:49:27,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11083 to 7594. [2021-07-09 17:49:27,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7594 states, 7593 states have (on average 3.539049124193336) internal successors, (26872), 7593 states have internal predecessors, (26872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:49:27,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7594 states to 7594 states and 26872 transitions. [2021-07-09 17:49:27,801 INFO L78 Accepts]: Start accepts. Automaton has 7594 states and 26872 transitions. Word has length 47 [2021-07-09 17:49:27,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:49:27,801 INFO L482 AbstractCegarLoop]: Abstraction has 7594 states and 26872 transitions. [2021-07-09 17:49:27,801 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) [2021-07-09 17:49:27,801 INFO L276 IsEmpty]: Start isEmpty. Operand 7594 states and 26872 transitions. [2021-07-09 17:49:27,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:49:27,813 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:49:27,814 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:49:27,814 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2021-07-09 17:49:27,814 INFO L430 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:49:27,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:49:27,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1689681340, now seen corresponding path program 153 times [2021-07-09 17:49:27,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:49:27,814 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134629909] [2021-07-09 17:49:27,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:49:27,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:49:28,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:49:28,066 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:49:28,066 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134629909] [2021-07-09 17:49:28,066 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134629909] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:49:28,066 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:49:28,066 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:49:28,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684429813] [2021-07-09 17:49:28,067 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:49:28,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:49:28,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:49:28,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:49:28,067 INFO L87 Difference]: Start difference. First operand 7594 states and 26872 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:49:31,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:49:31,198 INFO L93 Difference]: Finished difference Result 12148 states and 42969 transitions. [2021-07-09 17:49:31,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-07-09 17:49:31,199 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:49:31,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:49:31,225 INFO L225 Difference]: With dead ends: 12148 [2021-07-09 17:49:31,225 INFO L226 Difference]: Without dead ends: 12030 [2021-07-09 17:49:31,226 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1928 ImplicationChecksByTransitivity, 1742.4ms TimeCoverageRelationStatistics Valid=552, Invalid=6090, Unknown=0, NotChecked=0, Total=6642 [2021-07-09 17:49:31,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12030 states. [2021-07-09 17:49:31,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12030 to 7567. [2021-07-09 17:49:31,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7567 states, 7566 states have (on average 3.542426645519429) internal successors, (26802), 7566 states have internal predecessors, (26802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:49:31,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7567 states to 7567 states and 26802 transitions. [2021-07-09 17:49:31,376 INFO L78 Accepts]: Start accepts. Automaton has 7567 states and 26802 transitions. Word has length 47 [2021-07-09 17:49:31,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:49:31,376 INFO L482 AbstractCegarLoop]: Abstraction has 7567 states and 26802 transitions. [2021-07-09 17:49:31,376 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:49:31,377 INFO L276 IsEmpty]: Start isEmpty. Operand 7567 states and 26802 transitions. [2021-07-09 17:49:31,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:49:31,389 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:49:31,389 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:49:31,389 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2021-07-09 17:49:31,389 INFO L430 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:49:31,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:49:31,389 INFO L82 PathProgramCache]: Analyzing trace with hash -2047419614, now seen corresponding path program 154 times [2021-07-09 17:49:31,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:49:31,389 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272723231] [2021-07-09 17:49:31,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:49:31,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:49:31,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:49:31,608 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:49:31,608 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272723231] [2021-07-09 17:49:31,608 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272723231] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:49:31,608 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:49:31,608 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:49:31,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430785808] [2021-07-09 17:49:31,609 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:49:31,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:49:31,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:49:31,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:49:31,609 INFO L87 Difference]: Start difference. First operand 7567 states and 26802 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:49:35,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:49:35,100 INFO L93 Difference]: Finished difference Result 12460 states and 43711 transitions. [2021-07-09 17:49:35,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-07-09 17:49:35,100 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:49:35,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:49:35,128 INFO L225 Difference]: With dead ends: 12460 [2021-07-09 17:49:35,128 INFO L226 Difference]: Without dead ends: 12322 [2021-07-09 17:49:35,129 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2672 ImplicationChecksByTransitivity, 2156.4ms TimeCoverageRelationStatistics Valid=707, Invalid=7849, Unknown=0, NotChecked=0, Total=8556 [2021-07-09 17:49:35,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12322 states. [2021-07-09 17:49:35,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12322 to 7573. [2021-07-09 17:49:35,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7573 states, 7572 states have (on average 3.541336502905441) internal successors, (26815), 7572 states have internal predecessors, (26815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:49:35,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7573 states to 7573 states and 26815 transitions. [2021-07-09 17:49:35,286 INFO L78 Accepts]: Start accepts. Automaton has 7573 states and 26815 transitions. Word has length 47 [2021-07-09 17:49:35,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:49:35,286 INFO L482 AbstractCegarLoop]: Abstraction has 7573 states and 26815 transitions. [2021-07-09 17:49:35,286 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:49:35,286 INFO L276 IsEmpty]: Start isEmpty. Operand 7573 states and 26815 transitions. [2021-07-09 17:49:35,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:49:35,298 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:49:35,298 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:49:35,298 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2021-07-09 17:49:35,298 INFO L430 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:49:35,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:49:35,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1083848734, now seen corresponding path program 155 times [2021-07-09 17:49:35,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:49:35,299 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65738860] [2021-07-09 17:49:35,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:49:35,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:49:35,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:49:35,521 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:49:35,521 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65738860] [2021-07-09 17:49:35,521 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65738860] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:49:35,521 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:49:35,521 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:49:35,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255842705] [2021-07-09 17:49:35,521 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:49:35,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:49:35,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:49:35,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:49:35,521 INFO L87 Difference]: Start difference. First operand 7573 states and 26815 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:49:39,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:49:39,649 INFO L93 Difference]: Finished difference Result 13753 states and 48494 transitions. [2021-07-09 17:49:39,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-07-09 17:49:39,649 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:49:39,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:49:39,682 INFO L225 Difference]: With dead ends: 13753 [2021-07-09 17:49:39,682 INFO L226 Difference]: Without dead ends: 13658 [2021-07-09 17:49:39,683 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3421 ImplicationChecksByTransitivity, 2459.4ms TimeCoverageRelationStatistics Valid=827, Invalid=9679, Unknown=0, NotChecked=0, Total=10506 [2021-07-09 17:49:39,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13658 states. [2021-07-09 17:49:39,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13658 to 7575. [2021-07-09 17:49:39,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7575 states, 7574 states have (on average 3.541853710060734) internal successors, (26826), 7574 states have internal predecessors, (26826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:49:39,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7575 states to 7575 states and 26826 transitions. [2021-07-09 17:49:39,850 INFO L78 Accepts]: Start accepts. Automaton has 7575 states and 26826 transitions. Word has length 47 [2021-07-09 17:49:39,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:49:39,850 INFO L482 AbstractCegarLoop]: Abstraction has 7575 states and 26826 transitions. [2021-07-09 17:49:39,851 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:49:39,851 INFO L276 IsEmpty]: Start isEmpty. Operand 7575 states and 26826 transitions. [2021-07-09 17:49:39,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:49:39,863 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:49:39,863 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:49:39,863 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2021-07-09 17:49:39,863 INFO L430 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:49:39,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:49:39,863 INFO L82 PathProgramCache]: Analyzing trace with hash -369181508, now seen corresponding path program 156 times [2021-07-09 17:49:39,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:49:39,863 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831975154] [2021-07-09 17:49:39,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:49:39,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:49:40,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:49:40,072 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:49:40,072 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831975154] [2021-07-09 17:49:40,072 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831975154] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:49:40,073 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:49:40,073 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:49:40,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794691786] [2021-07-09 17:49:40,073 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:49:40,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:49:40,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:49:40,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:49:40,073 INFO L87 Difference]: Start difference. First operand 7575 states and 26826 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) [2021-07-09 17:49:42,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:49:42,790 INFO L93 Difference]: Finished difference Result 11987 states and 42145 transitions. [2021-07-09 17:49:42,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-07-09 17:49:42,790 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 [2021-07-09 17:49:42,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:49:42,816 INFO L225 Difference]: With dead ends: 11987 [2021-07-09 17:49:42,816 INFO L226 Difference]: Without dead ends: 11887 [2021-07-09 17:49:42,816 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1594 ImplicationChecksByTransitivity, 1507.0ms TimeCoverageRelationStatistics Valid=496, Invalid=5054, Unknown=0, NotChecked=0, Total=5550 [2021-07-09 17:49:42,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11887 states. [2021-07-09 17:49:42,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11887 to 7584. [2021-07-09 17:49:42,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7584 states, 7583 states have (on average 3.540551233021232) internal successors, (26848), 7583 states have internal predecessors, (26848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:49:42,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7584 states to 7584 states and 26848 transitions. [2021-07-09 17:49:42,975 INFO L78 Accepts]: Start accepts. Automaton has 7584 states and 26848 transitions. Word has length 47 [2021-07-09 17:49:42,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:49:42,975 INFO L482 AbstractCegarLoop]: Abstraction has 7584 states and 26848 transitions. [2021-07-09 17:49:42,975 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) [2021-07-09 17:49:42,975 INFO L276 IsEmpty]: Start isEmpty. Operand 7584 states and 26848 transitions. [2021-07-09 17:49:42,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:49:42,988 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:49:42,988 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:49:42,989 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2021-07-09 17:49:42,989 INFO L430 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:49:42,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:49:42,989 INFO L82 PathProgramCache]: Analyzing trace with hash -435244066, now seen corresponding path program 157 times [2021-07-09 17:49:42,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:49:42,989 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111572405] [2021-07-09 17:49:42,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:49:42,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:49:43,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:49:43,205 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:49:43,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111572405] [2021-07-09 17:49:43,205 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111572405] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:49:43,205 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:49:43,206 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:49:43,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682227225] [2021-07-09 17:49:43,206 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:49:43,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:49:43,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:49:43,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:49:43,206 INFO L87 Difference]: Start difference. First operand 7584 states and 26848 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:49:46,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:49:46,419 INFO L93 Difference]: Finished difference Result 12952 states and 45755 transitions. [2021-07-09 17:49:46,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-07-09 17:49:46,419 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:49:46,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:49:46,451 INFO L225 Difference]: With dead ends: 12952 [2021-07-09 17:49:46,451 INFO L226 Difference]: Without dead ends: 12846 [2021-07-09 17:49:46,452 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2321 ImplicationChecksByTransitivity, 1874.2ms TimeCoverageRelationStatistics Valid=629, Invalid=7027, Unknown=0, NotChecked=0, Total=7656 [2021-07-09 17:49:46,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12846 states. [2021-07-09 17:49:46,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12846 to 7569. [2021-07-09 17:49:46,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7569 states, 7568 states have (on average 3.5429439746300213) internal successors, (26813), 7568 states have internal predecessors, (26813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:49:46,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7569 states to 7569 states and 26813 transitions. [2021-07-09 17:49:46,621 INFO L78 Accepts]: Start accepts. Automaton has 7569 states and 26813 transitions. Word has length 47 [2021-07-09 17:49:46,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:49:46,622 INFO L482 AbstractCegarLoop]: Abstraction has 7569 states and 26813 transitions. [2021-07-09 17:49:46,622 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:49:46,622 INFO L276 IsEmpty]: Start isEmpty. Operand 7569 states and 26813 transitions. [2021-07-09 17:49:46,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:49:46,634 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:49:46,634 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:49:46,634 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2021-07-09 17:49:46,634 INFO L430 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:49:46,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:49:46,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1827442044, now seen corresponding path program 158 times [2021-07-09 17:49:46,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:49:46,634 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392856153] [2021-07-09 17:49:46,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:49:46,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:49:46,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:49:46,840 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:49:46,840 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392856153] [2021-07-09 17:49:46,840 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392856153] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:49:46,841 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:49:46,841 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:49:46,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798413456] [2021-07-09 17:49:46,841 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:49:46,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:49:46,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:49:46,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:49:46,841 INFO L87 Difference]: Start difference. First operand 7569 states and 26813 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) [2021-07-09 17:49:49,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:49:49,569 INFO L93 Difference]: Finished difference Result 10540 states and 36856 transitions. [2021-07-09 17:49:49,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-07-09 17:49:49,570 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 [2021-07-09 17:49:49,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:49:49,593 INFO L225 Difference]: With dead ends: 10540 [2021-07-09 17:49:49,593 INFO L226 Difference]: Without dead ends: 10403 [2021-07-09 17:49:49,594 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1534 ImplicationChecksByTransitivity, 1546.3ms TimeCoverageRelationStatistics Valid=470, Invalid=4932, Unknown=0, NotChecked=0, Total=5402 [2021-07-09 17:49:49,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10403 states. [2021-07-09 17:49:49,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10403 to 7605. [2021-07-09 17:49:49,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7605 states, 7604 states have (on average 3.5380063124671226) internal successors, (26903), 7604 states have internal predecessors, (26903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:49:49,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7605 states to 7605 states and 26903 transitions. [2021-07-09 17:49:49,741 INFO L78 Accepts]: Start accepts. Automaton has 7605 states and 26903 transitions. Word has length 47 [2021-07-09 17:49:49,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:49:49,741 INFO L482 AbstractCegarLoop]: Abstraction has 7605 states and 26903 transitions. [2021-07-09 17:49:49,741 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) [2021-07-09 17:49:49,741 INFO L276 IsEmpty]: Start isEmpty. Operand 7605 states and 26903 transitions. [2021-07-09 17:49:49,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:49:49,752 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:49:49,753 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:49:49,753 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2021-07-09 17:49:49,753 INFO L430 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:49:49,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:49:49,753 INFO L82 PathProgramCache]: Analyzing trace with hash -832931524, now seen corresponding path program 159 times [2021-07-09 17:49:49,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:49:49,753 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581588511] [2021-07-09 17:49:49,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:49:49,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:49:49,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:49:49,976 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:49:49,976 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581588511] [2021-07-09 17:49:49,976 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581588511] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:49:49,976 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:49:49,976 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:49:49,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543563236] [2021-07-09 17:49:49,976 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:49:49,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:49:49,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:49:49,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:49:49,977 INFO L87 Difference]: Start difference. First operand 7605 states and 26903 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:49:53,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:49:53,618 INFO L93 Difference]: Finished difference Result 11201 states and 39141 transitions. [2021-07-09 17:49:53,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-07-09 17:49:53,618 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:49:53,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:49:53,642 INFO L225 Difference]: With dead ends: 11201 [2021-07-09 17:49:53,642 INFO L226 Difference]: Without dead ends: 11061 [2021-07-09 17:49:53,642 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2810 ImplicationChecksByTransitivity, 2286.4ms TimeCoverageRelationStatistics Valid=722, Invalid=8208, Unknown=0, NotChecked=0, Total=8930 [2021-07-09 17:49:53,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11061 states. [2021-07-09 17:49:53,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11061 to 7587. [2021-07-09 17:49:53,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7587 states, 7586 states have (on average 3.5396783548642237) internal successors, (26852), 7586 states have internal predecessors, (26852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:49:53,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7587 states to 7587 states and 26852 transitions. [2021-07-09 17:49:53,787 INFO L78 Accepts]: Start accepts. Automaton has 7587 states and 26852 transitions. Word has length 47 [2021-07-09 17:49:53,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:49:53,787 INFO L482 AbstractCegarLoop]: Abstraction has 7587 states and 26852 transitions. [2021-07-09 17:49:53,788 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:49:53,788 INFO L276 IsEmpty]: Start isEmpty. Operand 7587 states and 26852 transitions. [2021-07-09 17:49:53,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:49:53,800 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:49:53,800 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:49:53,800 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2021-07-09 17:49:53,800 INFO L430 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:49:53,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:49:53,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1265956066, now seen corresponding path program 160 times [2021-07-09 17:49:53,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:49:53,800 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753927704] [2021-07-09 17:49:53,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:49:53,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:49:54,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:49:54,018 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:49:54,018 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753927704] [2021-07-09 17:49:54,018 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753927704] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:49:54,018 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:49:54,018 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:49:54,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090559384] [2021-07-09 17:49:54,018 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:49:54,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:49:54,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:49:54,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:49:54,019 INFO L87 Difference]: Start difference. First operand 7587 states and 26852 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:50:00,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:50:00,282 INFO L93 Difference]: Finished difference Result 13812 states and 48433 transitions. [2021-07-09 17:50:00,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2021-07-09 17:50:00,282 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:50:00,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:50:00,313 INFO L225 Difference]: With dead ends: 13812 [2021-07-09 17:50:00,313 INFO L226 Difference]: Without dead ends: 13438 [2021-07-09 17:50:00,314 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6484 ImplicationChecksByTransitivity, 3850.6ms TimeCoverageRelationStatistics Valid=1374, Invalid=16716, Unknown=0, NotChecked=0, Total=18090 [2021-07-09 17:50:00,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13438 states. [2021-07-09 17:50:00,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13438 to 7810. [2021-07-09 17:50:00,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7810 states, 7809 states have (on average 3.5375848380074273) internal successors, (27625), 7809 states have internal predecessors, (27625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:50:00,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7810 states to 7810 states and 27625 transitions. [2021-07-09 17:50:00,489 INFO L78 Accepts]: Start accepts. Automaton has 7810 states and 27625 transitions. Word has length 47 [2021-07-09 17:50:00,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:50:00,489 INFO L482 AbstractCegarLoop]: Abstraction has 7810 states and 27625 transitions. [2021-07-09 17:50:00,489 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:50:00,489 INFO L276 IsEmpty]: Start isEmpty. Operand 7810 states and 27625 transitions. [2021-07-09 17:50:00,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:50:00,502 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:50:00,502 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:50:00,502 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2021-07-09 17:50:00,502 INFO L430 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:50:00,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:50:00,502 INFO L82 PathProgramCache]: Analyzing trace with hash -2116607974, now seen corresponding path program 161 times [2021-07-09 17:50:00,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:50:00,502 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567092721] [2021-07-09 17:50:00,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:50:00,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:50:00,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:50:00,741 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:50:00,741 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567092721] [2021-07-09 17:50:00,741 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567092721] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:50:00,741 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:50:00,742 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:50:00,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716805957] [2021-07-09 17:50:00,742 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:50:00,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:50:00,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:50:00,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:50:00,742 INFO L87 Difference]: Start difference. First operand 7810 states and 27625 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:50:06,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:50:06,755 INFO L93 Difference]: Finished difference Result 13744 states and 48414 transitions. [2021-07-09 17:50:06,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2021-07-09 17:50:06,756 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:50:06,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:50:06,787 INFO L225 Difference]: With dead ends: 13744 [2021-07-09 17:50:06,788 INFO L226 Difference]: Without dead ends: 13521 [2021-07-09 17:50:06,789 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5433 ImplicationChecksByTransitivity, 3649.0ms TimeCoverageRelationStatistics Valid=1224, Invalid=14276, Unknown=0, NotChecked=0, Total=15500 [2021-07-09 17:50:06,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13521 states. [2021-07-09 17:50:06,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13521 to 7542. [2021-07-09 17:50:06,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7542 states, 7541 states have (on average 3.536931441453388) internal successors, (26672), 7541 states have internal predecessors, (26672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:50:06,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7542 states to 7542 states and 26672 transitions. [2021-07-09 17:50:06,953 INFO L78 Accepts]: Start accepts. Automaton has 7542 states and 26672 transitions. Word has length 47 [2021-07-09 17:50:06,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:50:06,953 INFO L482 AbstractCegarLoop]: Abstraction has 7542 states and 26672 transitions. [2021-07-09 17:50:06,953 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:50:06,953 INFO L276 IsEmpty]: Start isEmpty. Operand 7542 states and 26672 transitions. [2021-07-09 17:50:06,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:50:06,965 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:50:06,965 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:50:06,965 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2021-07-09 17:50:06,965 INFO L430 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:50:06,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:50:06,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1088988800, now seen corresponding path program 162 times [2021-07-09 17:50:06,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:50:06,965 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900200941] [2021-07-09 17:50:06,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:50:06,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:50:07,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:50:07,181 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:50:07,181 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900200941] [2021-07-09 17:50:07,182 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900200941] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:50:07,182 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:50:07,182 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:50:07,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577119106] [2021-07-09 17:50:07,182 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:50:07,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:50:07,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:50:07,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:50:07,182 INFO L87 Difference]: Start difference. First operand 7542 states and 26672 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:50:10,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:50:10,921 INFO L93 Difference]: Finished difference Result 12404 states and 43474 transitions. [2021-07-09 17:50:10,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-07-09 17:50:10,921 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:50:10,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:50:10,950 INFO L225 Difference]: With dead ends: 12404 [2021-07-09 17:50:10,951 INFO L226 Difference]: Without dead ends: 12282 [2021-07-09 17:50:10,952 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2949 ImplicationChecksByTransitivity, 2288.8ms TimeCoverageRelationStatistics Valid=752, Invalid=8560, Unknown=0, NotChecked=0, Total=9312 [2021-07-09 17:50:10,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12282 states. [2021-07-09 17:50:11,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12282 to 7548. [2021-07-09 17:50:11,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7548 states, 7547 states have (on average 3.53584205644627) internal successors, (26685), 7547 states have internal predecessors, (26685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:50:11,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7548 states to 7548 states and 26685 transitions. [2021-07-09 17:50:11,146 INFO L78 Accepts]: Start accepts. Automaton has 7548 states and 26685 transitions. Word has length 47 [2021-07-09 17:50:11,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:50:11,146 INFO L482 AbstractCegarLoop]: Abstraction has 7548 states and 26685 transitions. [2021-07-09 17:50:11,146 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:50:11,146 INFO L276 IsEmpty]: Start isEmpty. Operand 7548 states and 26685 transitions. [2021-07-09 17:50:11,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:50:11,158 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:50:11,158 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:50:11,158 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2021-07-09 17:50:11,158 INFO L430 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:50:11,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:50:11,159 INFO L82 PathProgramCache]: Analyzing trace with hash -74710148, now seen corresponding path program 163 times [2021-07-09 17:50:11,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:50:11,159 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364941732] [2021-07-09 17:50:11,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:50:11,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:50:11,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:50:11,380 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:50:11,380 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364941732] [2021-07-09 17:50:11,380 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364941732] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:50:11,380 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:50:11,380 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:50:11,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215622469] [2021-07-09 17:50:11,380 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:50:11,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:50:11,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:50:11,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:50:11,381 INFO L87 Difference]: Start difference. First operand 7548 states and 26685 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:50:15,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:50:15,690 INFO L93 Difference]: Finished difference Result 13260 states and 46655 transitions. [2021-07-09 17:50:15,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-07-09 17:50:15,690 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:50:15,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:50:15,722 INFO L225 Difference]: With dead ends: 13260 [2021-07-09 17:50:15,722 INFO L226 Difference]: Without dead ends: 13145 [2021-07-09 17:50:15,723 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3332 ImplicationChecksByTransitivity, 2557.8ms TimeCoverageRelationStatistics Valid=809, Invalid=9493, Unknown=0, NotChecked=0, Total=10302 [2021-07-09 17:50:15,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13145 states. [2021-07-09 17:50:15,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13145 to 7550. [2021-07-09 17:50:15,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7550 states, 7549 states have (on average 3.5355676248509735) internal successors, (26690), 7549 states have internal predecessors, (26690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:50:15,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7550 states to 7550 states and 26690 transitions. [2021-07-09 17:50:15,903 INFO L78 Accepts]: Start accepts. Automaton has 7550 states and 26690 transitions. Word has length 47 [2021-07-09 17:50:15,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:50:15,903 INFO L482 AbstractCegarLoop]: Abstraction has 7550 states and 26690 transitions. [2021-07-09 17:50:15,904 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:50:15,904 INFO L276 IsEmpty]: Start isEmpty. Operand 7550 states and 26690 transitions. [2021-07-09 17:50:15,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:50:15,916 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:50:15,916 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:50:15,916 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2021-07-09 17:50:15,917 INFO L430 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:50:15,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:50:15,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1527740390, now seen corresponding path program 164 times [2021-07-09 17:50:15,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:50:15,918 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743434092] [2021-07-09 17:50:15,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:50:15,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:50:16,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:50:16,152 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:50:16,152 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743434092] [2021-07-09 17:50:16,152 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743434092] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:50:16,152 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:50:16,152 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:50:16,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467677422] [2021-07-09 17:50:16,152 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:50:16,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:50:16,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:50:16,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:50:16,153 INFO L87 Difference]: Start difference. First operand 7550 states and 26690 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) [2021-07-09 17:50:18,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:50:18,784 INFO L93 Difference]: Finished difference Result 11476 states and 40361 transitions. [2021-07-09 17:50:18,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-07-09 17:50:18,784 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 [2021-07-09 17:50:18,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:50:18,809 INFO L225 Difference]: With dead ends: 11476 [2021-07-09 17:50:18,810 INFO L226 Difference]: Without dead ends: 11376 [2021-07-09 17:50:18,810 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1477 ImplicationChecksByTransitivity, 1534.2ms TimeCoverageRelationStatistics Valid=472, Invalid=4784, Unknown=0, NotChecked=0, Total=5256 [2021-07-09 17:50:18,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11376 states. [2021-07-09 17:50:18,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11376 to 7559. [2021-07-09 17:50:18,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7559 states, 7558 states have (on average 3.5342683249536915) internal successors, (26712), 7558 states have internal predecessors, (26712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:50:18,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7559 states to 7559 states and 26712 transitions. [2021-07-09 17:50:18,965 INFO L78 Accepts]: Start accepts. Automaton has 7559 states and 26712 transitions. Word has length 47 [2021-07-09 17:50:18,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:50:18,965 INFO L482 AbstractCegarLoop]: Abstraction has 7559 states and 26712 transitions. [2021-07-09 17:50:18,965 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) [2021-07-09 17:50:18,965 INFO L276 IsEmpty]: Start isEmpty. Operand 7559 states and 26712 transitions. [2021-07-09 17:50:18,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:50:18,977 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:50:18,977 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:50:18,977 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2021-07-09 17:50:18,977 INFO L430 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:50:18,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:50:18,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1593802948, now seen corresponding path program 165 times [2021-07-09 17:50:18,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:50:18,977 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691310975] [2021-07-09 17:50:18,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:50:18,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:50:19,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:50:19,191 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:50:19,191 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691310975] [2021-07-09 17:50:19,191 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691310975] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:50:19,191 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:50:19,191 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:50:19,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251986934] [2021-07-09 17:50:19,192 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:50:19,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:50:19,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:50:19,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:50:19,192 INFO L87 Difference]: Start difference. First operand 7559 states and 26712 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:50:22,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:50:22,243 INFO L93 Difference]: Finished difference Result 12033 states and 42383 transitions. [2021-07-09 17:50:22,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-07-09 17:50:22,243 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:50:22,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:50:22,272 INFO L225 Difference]: With dead ends: 12033 [2021-07-09 17:50:22,272 INFO L226 Difference]: Without dead ends: 11913 [2021-07-09 17:50:22,273 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1873 ImplicationChecksByTransitivity, 1735.3ms TimeCoverageRelationStatistics Valid=536, Invalid=5944, Unknown=0, NotChecked=0, Total=6480 [2021-07-09 17:50:22,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11913 states. [2021-07-09 17:50:22,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11913 to 7530. [2021-07-09 17:50:22,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7530 states, 7529 states have (on average 3.539115420374552) internal successors, (26646), 7529 states have internal predecessors, (26646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:50:22,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7530 states to 7530 states and 26646 transitions. [2021-07-09 17:50:22,498 INFO L78 Accepts]: Start accepts. Automaton has 7530 states and 26646 transitions. Word has length 47 [2021-07-09 17:50:22,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:50:22,498 INFO L482 AbstractCegarLoop]: Abstraction has 7530 states and 26646 transitions. [2021-07-09 17:50:22,498 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:50:22,499 INFO L276 IsEmpty]: Start isEmpty. Operand 7530 states and 26646 transitions. [2021-07-09 17:50:22,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:50:22,511 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:50:22,511 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:50:22,511 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2021-07-09 17:50:22,511 INFO L430 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:50:22,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:50:22,511 INFO L82 PathProgramCache]: Analyzing trace with hash -758680900, now seen corresponding path program 166 times [2021-07-09 17:50:22,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:50:22,511 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497923669] [2021-07-09 17:50:22,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:50:22,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:50:22,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:50:22,711 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:50:22,711 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497923669] [2021-07-09 17:50:22,711 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497923669] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:50:22,712 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:50:22,712 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:50:22,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358147] [2021-07-09 17:50:22,712 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:50:22,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:50:22,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:50:22,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:50:22,712 INFO L87 Difference]: Start difference. First operand 7530 states and 26646 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) [2021-07-09 17:50:25,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:50:25,763 INFO L93 Difference]: Finished difference Result 10968 states and 38743 transitions. [2021-07-09 17:50:25,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-07-09 17:50:25,763 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 [2021-07-09 17:50:25,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:50:25,786 INFO L225 Difference]: With dead ends: 10968 [2021-07-09 17:50:25,786 INFO L226 Difference]: Without dead ends: 10735 [2021-07-09 17:50:25,787 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1866 ImplicationChecksByTransitivity, 1728.9ms TimeCoverageRelationStatistics Valid=551, Invalid=5769, Unknown=0, NotChecked=0, Total=6320 [2021-07-09 17:50:25,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10735 states. [2021-07-09 17:50:25,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10735 to 7640. [2021-07-09 17:50:25,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7640 states, 7639 states have (on average 3.537243094645896) internal successors, (27021), 7639 states have internal predecessors, (27021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:50:25,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7640 states to 7640 states and 27021 transitions. [2021-07-09 17:50:25,934 INFO L78 Accepts]: Start accepts. Automaton has 7640 states and 27021 transitions. Word has length 47 [2021-07-09 17:50:25,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:50:25,934 INFO L482 AbstractCegarLoop]: Abstraction has 7640 states and 27021 transitions. [2021-07-09 17:50:25,934 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) [2021-07-09 17:50:25,934 INFO L276 IsEmpty]: Start isEmpty. Operand 7640 states and 27021 transitions. [2021-07-09 17:50:25,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:50:25,946 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:50:25,946 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:50:25,946 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2021-07-09 17:50:25,946 INFO L430 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:50:25,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:50:25,946 INFO L82 PathProgramCache]: Analyzing trace with hash -2109429504, now seen corresponding path program 167 times [2021-07-09 17:50:25,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:50:25,946 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709378808] [2021-07-09 17:50:25,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:50:25,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:50:26,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:50:26,159 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:50:26,159 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709378808] [2021-07-09 17:50:26,159 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709378808] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:50:26,159 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:50:26,159 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:50:26,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007755425] [2021-07-09 17:50:26,160 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:50:26,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:50:26,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:50:26,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:50:26,160 INFO L87 Difference]: Start difference. First operand 7640 states and 27021 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) [2021-07-09 17:50:31,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:50:31,855 INFO L93 Difference]: Finished difference Result 14411 states and 50935 transitions. [2021-07-09 17:50:31,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2021-07-09 17:50:31,855 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 [2021-07-09 17:50:31,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:50:31,888 INFO L225 Difference]: With dead ends: 14411 [2021-07-09 17:50:31,888 INFO L226 Difference]: Without dead ends: 14023 [2021-07-09 17:50:31,889 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5831 ImplicationChecksByTransitivity, 3614.0ms TimeCoverageRelationStatistics Valid=1330, Invalid=14926, Unknown=0, NotChecked=0, Total=16256 [2021-07-09 17:50:31,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14023 states. [2021-07-09 17:50:32,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14023 to 8088. [2021-07-09 17:50:32,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8088 states, 8087 states have (on average 3.547174477556572) internal successors, (28686), 8087 states have internal predecessors, (28686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:50:32,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8088 states to 8088 states and 28686 transitions. [2021-07-09 17:50:32,068 INFO L78 Accepts]: Start accepts. Automaton has 8088 states and 28686 transitions. Word has length 47 [2021-07-09 17:50:32,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:50:32,068 INFO L482 AbstractCegarLoop]: Abstraction has 8088 states and 28686 transitions. [2021-07-09 17:50:32,068 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) [2021-07-09 17:50:32,068 INFO L276 IsEmpty]: Start isEmpty. Operand 8088 states and 28686 transitions. [2021-07-09 17:50:32,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:50:32,081 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:50:32,081 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:50:32,081 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2021-07-09 17:50:32,081 INFO L430 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:50:32,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:50:32,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1334885884, now seen corresponding path program 168 times [2021-07-09 17:50:32,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:50:32,082 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898353916] [2021-07-09 17:50:32,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:50:32,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:50:32,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:50:32,283 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:50:32,283 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898353916] [2021-07-09 17:50:32,283 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898353916] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:50:32,284 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:50:32,284 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:50:32,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296930253] [2021-07-09 17:50:32,284 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:50:32,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:50:32,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:50:32,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:50:32,284 INFO L87 Difference]: Start difference. First operand 8088 states and 28686 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) [2021-07-09 17:50:36,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:50:36,923 INFO L93 Difference]: Finished difference Result 14138 states and 50378 transitions. [2021-07-09 17:50:36,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-07-09 17:50:36,923 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 [2021-07-09 17:50:36,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:50:36,958 INFO L225 Difference]: With dead ends: 14138 [2021-07-09 17:50:36,958 INFO L226 Difference]: Without dead ends: 13929 [2021-07-09 17:50:36,960 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4288 ImplicationChecksByTransitivity, 2803.7ms TimeCoverageRelationStatistics Valid=977, Invalid=11455, Unknown=0, NotChecked=0, Total=12432 [2021-07-09 17:50:37,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13929 states. [2021-07-09 17:50:37,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13929 to 8086. [2021-07-09 17:50:37,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8086 states, 8085 states have (on average 3.5500309214594927) internal successors, (28702), 8085 states have internal predecessors, (28702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:50:37,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8086 states to 8086 states and 28702 transitions. [2021-07-09 17:50:37,172 INFO L78 Accepts]: Start accepts. Automaton has 8086 states and 28702 transitions. Word has length 47 [2021-07-09 17:50:37,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:50:37,172 INFO L482 AbstractCegarLoop]: Abstraction has 8086 states and 28702 transitions. [2021-07-09 17:50:37,172 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) [2021-07-09 17:50:37,172 INFO L276 IsEmpty]: Start isEmpty. Operand 8086 states and 28702 transitions. [2021-07-09 17:50:37,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:50:37,185 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:50:37,185 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:50:37,185 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2021-07-09 17:50:37,185 INFO L430 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:50:37,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:50:37,185 INFO L82 PathProgramCache]: Analyzing trace with hash -784273860, now seen corresponding path program 169 times [2021-07-09 17:50:37,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:50:37,185 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976761621] [2021-07-09 17:50:37,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:50:37,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:50:37,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:50:37,377 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:50:37,377 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976761621] [2021-07-09 17:50:37,377 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976761621] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:50:37,377 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:50:37,377 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 17:50:37,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628700075] [2021-07-09 17:50:37,378 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 17:50:37,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:50:37,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 17:50:37,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-07-09 17:50:37,378 INFO L87 Difference]: Start difference. First operand 8086 states and 28702 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) [2021-07-09 17:50:41,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:50:41,929 INFO L93 Difference]: Finished difference Result 12863 states and 44759 transitions. [2021-07-09 17:50:41,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-07-09 17:50:41,929 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 [2021-07-09 17:50:41,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:50:41,957 INFO L225 Difference]: With dead ends: 12863 [2021-07-09 17:50:41,958 INFO L226 Difference]: Without dead ends: 12427 [2021-07-09 17:50:41,959 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3987 ImplicationChecksByTransitivity, 2736.4ms TimeCoverageRelationStatistics Valid=929, Invalid=10627, Unknown=0, NotChecked=0, Total=11556 [2021-07-09 17:50:41,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12427 states. [2021-07-09 17:50:42,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12427 to 8011. [2021-07-09 17:50:42,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8011 states, 8010 states have (on average 3.5363295880149814) internal successors, (28326), 8010 states have internal predecessors, (28326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:50:42,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8011 states to 8011 states and 28326 transitions. [2021-07-09 17:50:42,121 INFO L78 Accepts]: Start accepts. Automaton has 8011 states and 28326 transitions. Word has length 47 [2021-07-09 17:50:42,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:50:42,121 INFO L482 AbstractCegarLoop]: Abstraction has 8011 states and 28326 transitions. [2021-07-09 17:50:42,121 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) [2021-07-09 17:50:42,122 INFO L276 IsEmpty]: Start isEmpty. Operand 8011 states and 28326 transitions. [2021-07-09 17:50:42,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:50:42,134 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:50:42,134 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:50:42,134 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2021-07-09 17:50:42,134 INFO L430 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:50:42,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:50:42,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1531818974, now seen corresponding path program 170 times [2021-07-09 17:50:42,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:50:42,134 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143636023] [2021-07-09 17:50:42,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:50:42,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:50:42,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:50:42,334 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:50:42,334 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143636023] [2021-07-09 17:50:42,334 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143636023] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:50:42,334 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:50:42,334 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:50:42,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565491293] [2021-07-09 17:50:42,334 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:50:42,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:50:42,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:50:42,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:50:42,334 INFO L87 Difference]: Start difference. First operand 8011 states and 28326 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) [2021-07-09 17:50:47,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:50:47,766 INFO L93 Difference]: Finished difference Result 14239 states and 50041 transitions. [2021-07-09 17:50:47,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2021-07-09 17:50:47,766 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 [2021-07-09 17:50:47,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:50:47,801 INFO L225 Difference]: With dead ends: 14239 [2021-07-09 17:50:47,801 INFO L226 Difference]: Without dead ends: 13996 [2021-07-09 17:50:47,803 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5216 ImplicationChecksByTransitivity, 3228.5ms TimeCoverageRelationStatistics Valid=1170, Invalid=13592, Unknown=0, NotChecked=0, Total=14762 [2021-07-09 17:50:47,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13996 states. [2021-07-09 17:50:47,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13996 to 7879. [2021-07-09 17:50:47,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7879 states, 7878 states have (on average 3.535034272658035) internal successors, (27849), 7878 states have internal predecessors, (27849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:50:47,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7879 states to 7879 states and 27849 transitions. [2021-07-09 17:50:47,977 INFO L78 Accepts]: Start accepts. Automaton has 7879 states and 27849 transitions. Word has length 47 [2021-07-09 17:50:47,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:50:47,977 INFO L482 AbstractCegarLoop]: Abstraction has 7879 states and 27849 transitions. [2021-07-09 17:50:47,977 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) [2021-07-09 17:50:47,977 INFO L276 IsEmpty]: Start isEmpty. Operand 7879 states and 27849 transitions. [2021-07-09 17:50:47,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:50:47,990 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:50:47,990 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:50:47,990 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2021-07-09 17:50:47,990 INFO L430 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:50:47,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:50:47,990 INFO L82 PathProgramCache]: Analyzing trace with hash 681167066, now seen corresponding path program 171 times [2021-07-09 17:50:47,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:50:47,990 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140104650] [2021-07-09 17:50:47,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:50:47,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:50:48,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:50:48,226 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:50:48,227 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140104650] [2021-07-09 17:50:48,227 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140104650] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:50:48,227 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:50:48,227 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:50:48,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870763975] [2021-07-09 17:50:48,227 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:50:48,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:50:48,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:50:48,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:50:48,227 INFO L87 Difference]: Start difference. First operand 7879 states and 27849 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) [2021-07-09 17:50:53,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:50:53,621 INFO L93 Difference]: Finished difference Result 14617 states and 51563 transitions. [2021-07-09 17:50:53,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2021-07-09 17:50:53,622 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 [2021-07-09 17:50:53,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:50:53,655 INFO L225 Difference]: With dead ends: 14617 [2021-07-09 17:50:53,655 INFO L226 Difference]: Without dead ends: 14356 [2021-07-09 17:50:53,656 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5019 ImplicationChecksByTransitivity, 3192.1ms TimeCoverageRelationStatistics Valid=1131, Invalid=13149, Unknown=0, NotChecked=0, Total=14280 [2021-07-09 17:50:53,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14356 states. [2021-07-09 17:50:53,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14356 to 7709. [2021-07-09 17:50:53,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7709 states, 7708 states have (on average 3.5377529839128177) internal successors, (27269), 7708 states have internal predecessors, (27269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:50:53,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7709 states to 7709 states and 27269 transitions. [2021-07-09 17:50:53,892 INFO L78 Accepts]: Start accepts. Automaton has 7709 states and 27269 transitions. Word has length 47 [2021-07-09 17:50:53,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:50:53,892 INFO L482 AbstractCegarLoop]: Abstraction has 7709 states and 27269 transitions. [2021-07-09 17:50:53,892 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) [2021-07-09 17:50:53,892 INFO L276 IsEmpty]: Start isEmpty. Operand 7709 states and 27269 transitions. [2021-07-09 17:50:53,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:50:53,904 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:50:53,904 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:50:53,904 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2021-07-09 17:50:53,904 INFO L430 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:50:53,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:50:53,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1104012510, now seen corresponding path program 172 times [2021-07-09 17:50:53,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:50:53,905 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34506327] [2021-07-09 17:50:53,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:50:53,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:50:54,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:50:54,145 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:50:54,145 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34506327] [2021-07-09 17:50:54,145 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34506327] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:50:54,145 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:50:54,145 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:50:54,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81364516] [2021-07-09 17:50:54,145 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:50:54,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:50:54,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:50:54,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:50:54,146 INFO L87 Difference]: Start difference. First operand 7709 states and 27269 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:50:57,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:50:57,536 INFO L93 Difference]: Finished difference Result 11299 states and 39822 transitions. [2021-07-09 17:50:57,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-07-09 17:50:57,536 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:50:57,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:50:57,561 INFO L225 Difference]: With dead ends: 11299 [2021-07-09 17:50:57,561 INFO L226 Difference]: Without dead ends: 11172 [2021-07-09 17:50:57,561 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2384 ImplicationChecksByTransitivity, 1988.0ms TimeCoverageRelationStatistics Valid=630, Invalid=7202, Unknown=0, NotChecked=0, Total=7832 [2021-07-09 17:50:57,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11172 states. [2021-07-09 17:50:57,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11172 to 7723. [2021-07-09 17:50:57,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7723 states, 7722 states have (on average 3.5362600362600363) internal successors, (27307), 7722 states have internal predecessors, (27307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:50:57,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7723 states to 7723 states and 27307 transitions. [2021-07-09 17:50:57,711 INFO L78 Accepts]: Start accepts. Automaton has 7723 states and 27307 transitions. Word has length 47 [2021-07-09 17:50:57,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:50:57,711 INFO L482 AbstractCegarLoop]: Abstraction has 7723 states and 27307 transitions. [2021-07-09 17:50:57,711 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:50:57,711 INFO L276 IsEmpty]: Start isEmpty. Operand 7723 states and 27307 transitions. [2021-07-09 17:50:57,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:50:57,723 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:50:57,723 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:50:57,723 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2021-07-09 17:50:57,723 INFO L430 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:50:57,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:50:57,723 INFO L82 PathProgramCache]: Analyzing trace with hash -246736094, now seen corresponding path program 173 times [2021-07-09 17:50:57,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:50:57,723 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708428590] [2021-07-09 17:50:57,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:50:57,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:50:57,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:50:57,941 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:50:57,941 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708428590] [2021-07-09 17:50:57,941 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708428590] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:50:57,941 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:50:57,941 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:50:57,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535592463] [2021-07-09 17:50:57,941 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:50:57,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:50:57,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:50:57,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:50:57,942 INFO L87 Difference]: Start difference. First operand 7723 states and 27307 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:51:03,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:51:03,861 INFO L93 Difference]: Finished difference Result 14753 states and 52239 transitions. [2021-07-09 17:51:03,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2021-07-09 17:51:03,861 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:51:03,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:51:03,896 INFO L225 Difference]: With dead ends: 14753 [2021-07-09 17:51:03,896 INFO L226 Difference]: Without dead ends: 14664 [2021-07-09 17:51:03,897 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6414 ImplicationChecksByTransitivity, 3587.9ms TimeCoverageRelationStatistics Valid=1380, Invalid=16442, Unknown=0, NotChecked=0, Total=17822 [2021-07-09 17:51:03,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14664 states. [2021-07-09 17:51:04,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14664 to 7739. [2021-07-09 17:51:04,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7739 states, 7738 states have (on average 3.53489273714138) internal successors, (27353), 7738 states have internal predecessors, (27353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:51:04,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7739 states to 7739 states and 27353 transitions. [2021-07-09 17:51:04,077 INFO L78 Accepts]: Start accepts. Automaton has 7739 states and 27353 transitions. Word has length 47 [2021-07-09 17:51:04,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:51:04,077 INFO L482 AbstractCegarLoop]: Abstraction has 7739 states and 27353 transitions. [2021-07-09 17:51:04,077 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:51:04,077 INFO L276 IsEmpty]: Start isEmpty. Operand 7739 states and 27353 transitions. [2021-07-09 17:51:04,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:51:04,089 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:51:04,089 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:51:04,090 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2021-07-09 17:51:04,090 INFO L430 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:51:04,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:51:04,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1097388002, now seen corresponding path program 174 times [2021-07-09 17:51:04,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:51:04,090 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365892152] [2021-07-09 17:51:04,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:51:04,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:51:04,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:51:04,313 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:51:04,313 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365892152] [2021-07-09 17:51:04,313 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365892152] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:51:04,313 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:51:04,313 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:51:04,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659392352] [2021-07-09 17:51:04,313 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:51:04,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:51:04,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:51:04,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:51:04,314 INFO L87 Difference]: Start difference. First operand 7739 states and 27353 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:51:09,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:51:09,252 INFO L93 Difference]: Finished difference Result 14273 states and 50778 transitions. [2021-07-09 17:51:09,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2021-07-09 17:51:09,252 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:51:09,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:51:09,288 INFO L225 Difference]: With dead ends: 14273 [2021-07-09 17:51:09,289 INFO L226 Difference]: Without dead ends: 14170 [2021-07-09 17:51:09,290 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5061 ImplicationChecksByTransitivity, 2999.2ms TimeCoverageRelationStatistics Valid=1067, Invalid=13453, Unknown=0, NotChecked=0, Total=14520 [2021-07-09 17:51:09,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14170 states. [2021-07-09 17:51:09,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14170 to 7719. [2021-07-09 17:51:09,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7719 states, 7718 states have (on average 3.5373153666753043) internal successors, (27301), 7718 states have internal predecessors, (27301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:51:09,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7719 states to 7719 states and 27301 transitions. [2021-07-09 17:51:09,468 INFO L78 Accepts]: Start accepts. Automaton has 7719 states and 27301 transitions. Word has length 47 [2021-07-09 17:51:09,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:51:09,468 INFO L482 AbstractCegarLoop]: Abstraction has 7719 states and 27301 transitions. [2021-07-09 17:51:09,468 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:51:09,468 INFO L276 IsEmpty]: Start isEmpty. Operand 7719 states and 27301 transitions. [2021-07-09 17:51:09,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:51:09,481 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:51:09,481 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:51:09,481 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2021-07-09 17:51:09,482 INFO L430 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:51:09,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:51:09,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1649031428, now seen corresponding path program 175 times [2021-07-09 17:51:09,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:51:09,482 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096362264] [2021-07-09 17:51:09,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:51:09,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:51:09,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:51:09,698 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:51:09,698 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096362264] [2021-07-09 17:51:09,698 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096362264] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:51:09,698 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:51:09,698 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:51:09,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119425288] [2021-07-09 17:51:09,698 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:51:09,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:51:09,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:51:09,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:51:09,699 INFO L87 Difference]: Start difference. First operand 7719 states and 27301 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:51:12,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:51:12,483 INFO L93 Difference]: Finished difference Result 10633 states and 37445 transitions. [2021-07-09 17:51:12,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-07-09 17:51:12,483 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:51:12,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:51:12,507 INFO L225 Difference]: With dead ends: 10633 [2021-07-09 17:51:12,507 INFO L226 Difference]: Without dead ends: 10506 [2021-07-09 17:51:12,508 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1594 ImplicationChecksByTransitivity, 1519.6ms TimeCoverageRelationStatistics Valid=463, Invalid=5237, Unknown=0, NotChecked=0, Total=5700 [2021-07-09 17:51:12,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10506 states. [2021-07-09 17:51:12,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10506 to 7735. [2021-07-09 17:51:12,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7735 states, 7734 states have (on average 3.535169381949832) internal successors, (27341), 7734 states have internal predecessors, (27341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:51:12,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7735 states to 7735 states and 27341 transitions. [2021-07-09 17:51:12,656 INFO L78 Accepts]: Start accepts. Automaton has 7735 states and 27341 transitions. Word has length 47 [2021-07-09 17:51:12,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:51:12,656 INFO L482 AbstractCegarLoop]: Abstraction has 7735 states and 27341 transitions. [2021-07-09 17:51:12,656 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:51:12,656 INFO L276 IsEmpty]: Start isEmpty. Operand 7735 states and 27341 transitions. [2021-07-09 17:51:12,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:51:12,669 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:51:12,669 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:51:12,669 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2021-07-09 17:51:12,669 INFO L430 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:51:12,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:51:12,669 INFO L82 PathProgramCache]: Analyzing trace with hash 178339832, now seen corresponding path program 176 times [2021-07-09 17:51:12,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:51:12,669 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664709404] [2021-07-09 17:51:12,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:51:12,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:51:12,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:51:12,876 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:51:12,876 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664709404] [2021-07-09 17:51:12,876 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664709404] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:51:12,876 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:51:12,876 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:51:12,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647848626] [2021-07-09 17:51:12,876 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:51:12,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:51:12,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:51:12,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:51:12,877 INFO L87 Difference]: Start difference. First operand 7735 states and 27341 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) [2021-07-09 17:51:15,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:51:15,233 INFO L93 Difference]: Finished difference Result 9833 states and 34722 transitions. [2021-07-09 17:51:15,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-07-09 17:51:15,233 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 [2021-07-09 17:51:15,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:51:15,254 INFO L225 Difference]: With dead ends: 9833 [2021-07-09 17:51:15,255 INFO L226 Difference]: Without dead ends: 9736 [2021-07-09 17:51:15,255 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1383 ImplicationChecksByTransitivity, 1342.7ms TimeCoverageRelationStatistics Valid=425, Invalid=4545, Unknown=0, NotChecked=0, Total=4970 [2021-07-09 17:51:15,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9736 states. [2021-07-09 17:51:15,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9736 to 7741. [2021-07-09 17:51:15,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7741 states, 7740 states have (on average 3.5343669250645995) internal successors, (27356), 7740 states have internal predecessors, (27356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:51:15,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7741 states to 7741 states and 27356 transitions. [2021-07-09 17:51:15,395 INFO L78 Accepts]: Start accepts. Automaton has 7741 states and 27356 transitions. Word has length 47 [2021-07-09 17:51:15,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:51:15,395 INFO L482 AbstractCegarLoop]: Abstraction has 7741 states and 27356 transitions. [2021-07-09 17:51:15,395 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) [2021-07-09 17:51:15,396 INFO L276 IsEmpty]: Start isEmpty. Operand 7741 states and 27356 transitions. [2021-07-09 17:51:15,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:51:15,407 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:51:15,408 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:51:15,408 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2021-07-09 17:51:15,408 INFO L430 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:51:15,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:51:15,408 INFO L82 PathProgramCache]: Analyzing trace with hash 181013658, now seen corresponding path program 177 times [2021-07-09 17:51:15,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:51:15,408 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347145559] [2021-07-09 17:51:15,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:51:15,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:51:15,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:51:15,625 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:51:15,625 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347145559] [2021-07-09 17:51:15,625 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347145559] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:51:15,625 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:51:15,626 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:51:15,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846849218] [2021-07-09 17:51:15,626 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:51:15,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:51:15,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:51:15,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:51:15,626 INFO L87 Difference]: Start difference. First operand 7741 states and 27356 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:51:18,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:51:18,581 INFO L93 Difference]: Finished difference Result 10505 states and 37061 transitions. [2021-07-09 17:51:18,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-07-09 17:51:18,582 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:51:18,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:51:18,605 INFO L225 Difference]: With dead ends: 10505 [2021-07-09 17:51:18,605 INFO L226 Difference]: Without dead ends: 10396 [2021-07-09 17:51:18,606 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1928 ImplicationChecksByTransitivity, 1719.3ms TimeCoverageRelationStatistics Valid=547, Invalid=6095, Unknown=0, NotChecked=0, Total=6642 [2021-07-09 17:51:18,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10396 states. [2021-07-09 17:51:18,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10396 to 7723. [2021-07-09 17:51:18,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7723 states, 7722 states have (on average 3.5362600362600363) internal successors, (27307), 7722 states have internal predecessors, (27307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:51:18,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7723 states to 7723 states and 27307 transitions. [2021-07-09 17:51:18,757 INFO L78 Accepts]: Start accepts. Automaton has 7723 states and 27307 transitions. Word has length 47 [2021-07-09 17:51:18,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:51:18,757 INFO L482 AbstractCegarLoop]: Abstraction has 7723 states and 27307 transitions. [2021-07-09 17:51:18,757 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:51:18,757 INFO L276 IsEmpty]: Start isEmpty. Operand 7723 states and 27307 transitions. [2021-07-09 17:51:18,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:51:18,769 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:51:18,769 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:51:18,769 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2021-07-09 17:51:18,770 INFO L430 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:51:18,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:51:18,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1127458014, now seen corresponding path program 178 times [2021-07-09 17:51:18,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:51:18,770 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442322988] [2021-07-09 17:51:18,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:51:18,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:51:18,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:51:18,986 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:51:18,986 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442322988] [2021-07-09 17:51:18,986 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442322988] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:51:18,986 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:51:18,986 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:51:18,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102831520] [2021-07-09 17:51:18,986 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:51:18,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:51:18,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:51:18,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:51:18,987 INFO L87 Difference]: Start difference. First operand 7723 states and 27307 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:51:23,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:51:23,935 INFO L93 Difference]: Finished difference Result 12486 states and 43792 transitions. [2021-07-09 17:51:23,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2021-07-09 17:51:23,936 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:51:23,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:51:23,962 INFO L225 Difference]: With dead ends: 12486 [2021-07-09 17:51:23,962 INFO L226 Difference]: Without dead ends: 12268 [2021-07-09 17:51:23,964 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5343 ImplicationChecksByTransitivity, 3209.7ms TimeCoverageRelationStatistics Valid=1183, Invalid=14069, Unknown=0, NotChecked=0, Total=15252 [2021-07-09 17:51:23,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12268 states. [2021-07-09 17:51:24,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12268 to 8026. [2021-07-09 17:51:24,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8026 states, 8025 states have (on average 3.5418068535825546) internal successors, (28423), 8025 states have internal predecessors, (28423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:51:24,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8026 states to 8026 states and 28423 transitions. [2021-07-09 17:51:24,127 INFO L78 Accepts]: Start accepts. Automaton has 8026 states and 28423 transitions. Word has length 47 [2021-07-09 17:51:24,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:51:24,127 INFO L482 AbstractCegarLoop]: Abstraction has 8026 states and 28423 transitions. [2021-07-09 17:51:24,127 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:51:24,127 INFO L276 IsEmpty]: Start isEmpty. Operand 8026 states and 28423 transitions. [2021-07-09 17:51:24,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:51:24,139 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:51:24,140 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:51:24,140 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2021-07-09 17:51:24,140 INFO L430 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:51:24,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:51:24,140 INFO L82 PathProgramCache]: Analyzing trace with hash 443963422, now seen corresponding path program 179 times [2021-07-09 17:51:24,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:51:24,140 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220802467] [2021-07-09 17:51:24,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:51:24,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:51:24,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:51:24,354 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:51:24,354 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220802467] [2021-07-09 17:51:24,354 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220802467] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:51:24,354 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:51:24,354 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:51:24,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562422609] [2021-07-09 17:51:24,354 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:51:24,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:51:24,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:51:24,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:51:24,355 INFO L87 Difference]: Start difference. First operand 8026 states and 28423 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:51:30,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:51:30,105 INFO L93 Difference]: Finished difference Result 14219 states and 50372 transitions. [2021-07-09 17:51:30,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2021-07-09 17:51:30,105 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:51:30,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:51:30,137 INFO L225 Difference]: With dead ends: 14219 [2021-07-09 17:51:30,138 INFO L226 Difference]: Without dead ends: 14124 [2021-07-09 17:51:30,139 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7407 ImplicationChecksByTransitivity, 3653.9ms TimeCoverageRelationStatistics Valid=1427, Invalid=18879, Unknown=0, NotChecked=0, Total=20306 [2021-07-09 17:51:30,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14124 states. [2021-07-09 17:51:30,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14124 to 8026. [2021-07-09 17:51:30,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8026 states, 8025 states have (on average 3.5418068535825546) internal successors, (28423), 8025 states have internal predecessors, (28423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:51:30,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8026 states to 8026 states and 28423 transitions. [2021-07-09 17:51:30,316 INFO L78 Accepts]: Start accepts. Automaton has 8026 states and 28423 transitions. Word has length 47 [2021-07-09 17:51:30,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:51:30,316 INFO L482 AbstractCegarLoop]: Abstraction has 8026 states and 28423 transitions. [2021-07-09 17:51:30,317 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:51:30,317 INFO L276 IsEmpty]: Start isEmpty. Operand 8026 states and 28423 transitions. [2021-07-09 17:51:30,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:51:30,329 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:51:30,329 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:51:30,329 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2021-07-09 17:51:30,329 INFO L430 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:51:30,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:51:30,330 INFO L82 PathProgramCache]: Analyzing trace with hash 742855100, now seen corresponding path program 180 times [2021-07-09 17:51:30,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:51:30,330 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128298808] [2021-07-09 17:51:30,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:51:30,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:51:30,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:51:30,576 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:51:30,576 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128298808] [2021-07-09 17:51:30,576 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128298808] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:51:30,576 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:51:30,577 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:51:30,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702642074] [2021-07-09 17:51:30,577 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:51:30,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:51:30,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:51:30,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:51:30,577 INFO L87 Difference]: Start difference. First operand 8026 states and 28423 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) [2021-07-09 17:51:33,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:51:33,806 INFO L93 Difference]: Finished difference Result 11464 states and 40386 transitions. [2021-07-09 17:51:33,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-07-09 17:51:33,807 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 [2021-07-09 17:51:33,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:51:33,831 INFO L225 Difference]: With dead ends: 11464 [2021-07-09 17:51:33,831 INFO L226 Difference]: Without dead ends: 11367 [2021-07-09 17:51:33,832 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2673 ImplicationChecksByTransitivity, 2007.0ms TimeCoverageRelationStatistics Valid=647, Invalid=7725, Unknown=0, NotChecked=0, Total=8372 [2021-07-09 17:51:33,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11367 states. [2021-07-09 17:51:33,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11367 to 8034. [2021-07-09 17:51:33,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8034 states, 8033 states have (on average 3.5405203535416407) internal successors, (28441), 8033 states have internal predecessors, (28441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:51:33,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8034 states to 8034 states and 28441 transitions. [2021-07-09 17:51:33,986 INFO L78 Accepts]: Start accepts. Automaton has 8034 states and 28441 transitions. Word has length 47 [2021-07-09 17:51:33,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:51:33,986 INFO L482 AbstractCegarLoop]: Abstraction has 8034 states and 28441 transitions. [2021-07-09 17:51:33,986 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) [2021-07-09 17:51:33,986 INFO L276 IsEmpty]: Start isEmpty. Operand 8034 states and 28441 transitions. [2021-07-09 17:51:33,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:51:33,999 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:51:33,999 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:51:33,999 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2021-07-09 17:51:33,999 INFO L430 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:51:33,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:51:33,999 INFO L82 PathProgramCache]: Analyzing trace with hash -982565410, now seen corresponding path program 181 times [2021-07-09 17:51:33,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:51:33,999 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728653015] [2021-07-09 17:51:33,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:51:34,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:51:34,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:51:34,247 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:51:34,247 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728653015] [2021-07-09 17:51:34,247 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728653015] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:51:34,247 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:51:34,247 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:51:34,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058509986] [2021-07-09 17:51:34,247 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:51:34,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:51:34,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:51:34,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:51:34,248 INFO L87 Difference]: Start difference. First operand 8034 states and 28441 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:51:38,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:51:38,337 INFO L93 Difference]: Finished difference Result 11873 states and 41988 transitions. [2021-07-09 17:51:38,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-07-09 17:51:38,338 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:51:38,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:51:38,364 INFO L225 Difference]: With dead ends: 11873 [2021-07-09 17:51:38,364 INFO L226 Difference]: Without dead ends: 11770 [2021-07-09 17:51:38,365 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3798 ImplicationChecksByTransitivity, 2588.2ms TimeCoverageRelationStatistics Valid=953, Invalid=10603, Unknown=0, NotChecked=0, Total=11556 [2021-07-09 17:51:38,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11770 states. [2021-07-09 17:51:38,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11770 to 8022. [2021-07-09 17:51:38,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8022 states, 8021 states have (on average 3.5423263932178033) internal successors, (28413), 8021 states have internal predecessors, (28413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:51:38,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8022 states to 8022 states and 28413 transitions. [2021-07-09 17:51:38,529 INFO L78 Accepts]: Start accepts. Automaton has 8022 states and 28413 transitions. Word has length 47 [2021-07-09 17:51:38,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:51:38,529 INFO L482 AbstractCegarLoop]: Abstraction has 8022 states and 28413 transitions. [2021-07-09 17:51:38,529 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:51:38,529 INFO L276 IsEmpty]: Start isEmpty. Operand 8022 states and 28413 transitions. [2021-07-09 17:51:38,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:51:38,542 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:51:38,542 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:51:38,542 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2021-07-09 17:51:38,542 INFO L430 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:51:38,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:51:38,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1088045692, now seen corresponding path program 182 times [2021-07-09 17:51:38,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:51:38,542 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987310130] [2021-07-09 17:51:38,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:51:38,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:51:38,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:51:38,745 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:51:38,745 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987310130] [2021-07-09 17:51:38,745 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987310130] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:51:38,745 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:51:38,745 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:51:38,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713818712] [2021-07-09 17:51:38,748 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:51:38,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:51:38,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:51:38,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:51:38,748 INFO L87 Difference]: Start difference. First operand 8022 states and 28413 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) [2021-07-09 17:51:42,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:51:42,836 INFO L93 Difference]: Finished difference Result 11696 states and 41074 transitions. [2021-07-09 17:51:42,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-07-09 17:51:42,836 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 [2021-07-09 17:51:42,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:51:42,861 INFO L225 Difference]: With dead ends: 11696 [2021-07-09 17:51:42,861 INFO L226 Difference]: Without dead ends: 11462 [2021-07-09 17:51:42,862 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3751 ImplicationChecksByTransitivity, 2484.9ms TimeCoverageRelationStatistics Valid=899, Invalid=10231, Unknown=0, NotChecked=0, Total=11130 [2021-07-09 17:51:42,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11462 states. [2021-07-09 17:51:42,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11462 to 8168. [2021-07-09 17:51:43,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8168 states, 8167 states have (on average 3.5452430513040283) internal successors, (28954), 8167 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) [2021-07-09 17:51:43,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8168 states to 8168 states and 28954 transitions. [2021-07-09 17:51:43,025 INFO L78 Accepts]: Start accepts. Automaton has 8168 states and 28954 transitions. Word has length 47 [2021-07-09 17:51:43,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:51:43,025 INFO L482 AbstractCegarLoop]: Abstraction has 8168 states and 28954 transitions. [2021-07-09 17:51:43,025 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) [2021-07-09 17:51:43,025 INFO L276 IsEmpty]: Start isEmpty. Operand 8168 states and 28954 transitions. [2021-07-09 17:51:43,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:51:43,039 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:51:43,039 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:51:43,039 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2021-07-09 17:51:43,039 INFO L430 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:51:43,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:51:43,039 INFO L82 PathProgramCache]: Analyzing trace with hash 279105084, now seen corresponding path program 183 times [2021-07-09 17:51:43,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:51:43,039 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132833327] [2021-07-09 17:51:43,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:51:43,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:51:43,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:51:43,254 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:51:43,254 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132833327] [2021-07-09 17:51:43,254 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132833327] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:51:43,254 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:51:43,254 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:51:43,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734074031] [2021-07-09 17:51:43,255 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:51:43,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:51:43,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:51:43,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:51:43,255 INFO L87 Difference]: Start difference. First operand 8168 states and 28954 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:51:47,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:51:47,516 INFO L93 Difference]: Finished difference Result 11561 states and 40520 transitions. [2021-07-09 17:51:47,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-07-09 17:51:47,517 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:51:47,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:51:47,543 INFO L225 Difference]: With dead ends: 11561 [2021-07-09 17:51:47,543 INFO L226 Difference]: Without dead ends: 11416 [2021-07-09 17:51:47,544 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4113 ImplicationChecksByTransitivity, 2579.5ms TimeCoverageRelationStatistics Valid=936, Invalid=11274, Unknown=0, NotChecked=0, Total=12210 [2021-07-09 17:51:47,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11416 states. [2021-07-09 17:51:47,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11416 to 8168. [2021-07-09 17:51:47,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8168 states, 8167 states have (on average 3.5445083874127588) internal successors, (28948), 8167 states have internal predecessors, (28948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:51:47,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8168 states to 8168 states and 28948 transitions. [2021-07-09 17:51:47,733 INFO L78 Accepts]: Start accepts. Automaton has 8168 states and 28948 transitions. Word has length 47 [2021-07-09 17:51:47,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:51:47,733 INFO L482 AbstractCegarLoop]: Abstraction has 8168 states and 28948 transitions. [2021-07-09 17:51:47,733 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:51:47,733 INFO L276 IsEmpty]: Start isEmpty. Operand 8168 states and 28948 transitions. [2021-07-09 17:51:47,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:51:47,746 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:51:47,746 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:51:47,746 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2021-07-09 17:51:47,746 INFO L430 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:51:47,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:51:47,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1179000862, now seen corresponding path program 184 times [2021-07-09 17:51:47,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:51:47,747 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269279695] [2021-07-09 17:51:47,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:51:47,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:51:47,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:51:47,967 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:51:47,967 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269279695] [2021-07-09 17:51:47,967 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269279695] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:51:47,967 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:51:47,967 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:51:47,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427560851] [2021-07-09 17:51:47,967 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:51:47,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:51:47,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:51:47,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:51:47,968 INFO L87 Difference]: Start difference. First operand 8168 states and 28948 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:51:55,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:51:55,317 INFO L93 Difference]: Finished difference Result 17145 states and 60671 transitions. [2021-07-09 17:51:55,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2021-07-09 17:51:55,317 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:51:55,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:51:55,356 INFO L225 Difference]: With dead ends: 17145 [2021-07-09 17:51:55,356 INFO L226 Difference]: Without dead ends: 16701 [2021-07-09 17:51:55,357 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9514 ImplicationChecksByTransitivity, 4628.9ms TimeCoverageRelationStatistics Valid=1677, Invalid=23445, Unknown=0, NotChecked=0, Total=25122 [2021-07-09 17:51:55,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16701 states. [2021-07-09 17:51:55,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16701 to 8664. [2021-07-09 17:51:55,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8664 states, 8663 states have (on average 3.558582477201893) internal successors, (30828), 8663 states have internal predecessors, (30828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:51:55,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8664 states to 8664 states and 30828 transitions. [2021-07-09 17:51:55,566 INFO L78 Accepts]: Start accepts. Automaton has 8664 states and 30828 transitions. Word has length 47 [2021-07-09 17:51:55,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:51:55,567 INFO L482 AbstractCegarLoop]: Abstraction has 8664 states and 30828 transitions. [2021-07-09 17:51:55,567 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:51:55,567 INFO L276 IsEmpty]: Start isEmpty. Operand 8664 states and 30828 transitions. [2021-07-09 17:51:55,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:51:55,580 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:51:55,580 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:51:55,580 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2021-07-09 17:51:55,580 INFO L430 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:51:55,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:51:55,581 INFO L82 PathProgramCache]: Analyzing trace with hash 328348954, now seen corresponding path program 185 times [2021-07-09 17:51:55,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:51:55,581 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84180091] [2021-07-09 17:51:55,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:51:55,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:51:55,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:51:55,797 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:51:55,797 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84180091] [2021-07-09 17:51:55,797 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84180091] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:51:55,797 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:51:55,797 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:51:55,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55981579] [2021-07-09 17:51:55,797 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:51:55,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:51:55,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:51:55,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:51:55,798 INFO L87 Difference]: Start difference. First operand 8664 states and 30828 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:02,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:52:02,712 INFO L93 Difference]: Finished difference Result 16952 states and 60088 transitions. [2021-07-09 17:52:02,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2021-07-09 17:52:02,712 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:52:02,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:52:02,750 INFO L225 Difference]: With dead ends: 16952 [2021-07-09 17:52:02,751 INFO L226 Difference]: Without dead ends: 16744 [2021-07-09 17:52:02,751 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8465 ImplicationChecksByTransitivity, 4169.1ms TimeCoverageRelationStatistics Valid=1544, Invalid=21106, Unknown=0, NotChecked=0, Total=22650 [2021-07-09 17:52:02,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16744 states. [2021-07-09 17:52:02,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16744 to 8619. [2021-07-09 17:52:02,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8619 states, 8618 states have (on average 3.561615223949872) internal successors, (30694), 8618 states have internal predecessors, (30694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:02,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8619 states to 8619 states and 30694 transitions. [2021-07-09 17:52:02,960 INFO L78 Accepts]: Start accepts. Automaton has 8619 states and 30694 transitions. Word has length 47 [2021-07-09 17:52:02,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:52:02,960 INFO L482 AbstractCegarLoop]: Abstraction has 8619 states and 30694 transitions. [2021-07-09 17:52:02,960 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:02,960 INFO L276 IsEmpty]: Start isEmpty. Operand 8619 states and 30694 transitions. [2021-07-09 17:52:02,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:52:02,974 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:52:02,974 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:52:02,974 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2021-07-09 17:52:02,974 INFO L430 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:52:02,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:52:02,974 INFO L82 PathProgramCache]: Analyzing trace with hash 2008950400, now seen corresponding path program 186 times [2021-07-09 17:52:02,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:52:02,974 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383797112] [2021-07-09 17:52:02,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:52:02,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:52:03,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:52:03,187 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:52:03,187 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383797112] [2021-07-09 17:52:03,187 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383797112] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:52:03,187 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:52:03,187 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:52:03,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934605815] [2021-07-09 17:52:03,187 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:52:03,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:52:03,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:52:03,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:52:03,188 INFO L87 Difference]: Start difference. First operand 8619 states and 30694 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:08,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:52:08,329 INFO L93 Difference]: Finished difference Result 13187 states and 46449 transitions. [2021-07-09 17:52:08,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2021-07-09 17:52:08,329 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:52:08,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:52:08,358 INFO L225 Difference]: With dead ends: 13187 [2021-07-09 17:52:08,358 INFO L226 Difference]: Without dead ends: 13066 [2021-07-09 17:52:08,359 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5677 ImplicationChecksByTransitivity, 3295.9ms TimeCoverageRelationStatistics Valid=1222, Invalid=14780, Unknown=0, NotChecked=0, Total=16002 [2021-07-09 17:52:08,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13066 states. [2021-07-09 17:52:08,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13066 to 8619. [2021-07-09 17:52:08,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8619 states, 8618 states have (on average 3.561615223949872) internal successors, (30694), 8618 states have internal predecessors, (30694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:08,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8619 states to 8619 states and 30694 transitions. [2021-07-09 17:52:08,529 INFO L78 Accepts]: Start accepts. Automaton has 8619 states and 30694 transitions. Word has length 47 [2021-07-09 17:52:08,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:52:08,529 INFO L482 AbstractCegarLoop]: Abstraction has 8619 states and 30694 transitions. [2021-07-09 17:52:08,529 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:08,529 INFO L276 IsEmpty]: Start isEmpty. Operand 8619 states and 30694 transitions. [2021-07-09 17:52:08,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:52:08,543 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:52:08,543 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:52:08,543 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2021-07-09 17:52:08,543 INFO L430 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:52:08,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:52:08,543 INFO L82 PathProgramCache]: Analyzing trace with hash -714595460, now seen corresponding path program 187 times [2021-07-09 17:52:08,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:52:08,543 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186069250] [2021-07-09 17:52:08,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:52:08,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:52:08,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:52:08,759 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:52:08,759 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186069250] [2021-07-09 17:52:08,759 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186069250] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:52:08,760 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:52:08,760 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:52:08,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618041971] [2021-07-09 17:52:08,760 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:52:08,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:52:08,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:52:08,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:52:08,760 INFO L87 Difference]: Start difference. First operand 8619 states and 30694 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:14,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:52:14,971 INFO L93 Difference]: Finished difference Result 16101 states and 57229 transitions. [2021-07-09 17:52:14,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2021-07-09 17:52:14,971 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:52:14,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:52:15,008 INFO L225 Difference]: With dead ends: 16101 [2021-07-09 17:52:15,008 INFO L226 Difference]: Without dead ends: 15857 [2021-07-09 17:52:15,009 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7709 ImplicationChecksByTransitivity, 3800.1ms TimeCoverageRelationStatistics Valid=1488, Invalid=19392, Unknown=0, NotChecked=0, Total=20880 [2021-07-09 17:52:15,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15857 states. [2021-07-09 17:52:15,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15857 to 8790. [2021-07-09 17:52:15,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8790 states, 8789 states have (on average 3.567300034133576) internal successors, (31353), 8789 states have internal predecessors, (31353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:15,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8790 states to 8790 states and 31353 transitions. [2021-07-09 17:52:15,211 INFO L78 Accepts]: Start accepts. Automaton has 8790 states and 31353 transitions. Word has length 47 [2021-07-09 17:52:15,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:52:15,211 INFO L482 AbstractCegarLoop]: Abstraction has 8790 states and 31353 transitions. [2021-07-09 17:52:15,211 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:15,211 INFO L276 IsEmpty]: Start isEmpty. Operand 8790 states and 31353 transitions. [2021-07-09 17:52:15,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:52:15,225 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:52:15,225 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:52:15,225 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2021-07-09 17:52:15,225 INFO L430 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:52:15,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:52:15,225 INFO L82 PathProgramCache]: Analyzing trace with hash -415703782, now seen corresponding path program 188 times [2021-07-09 17:52:15,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:52:15,225 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645758688] [2021-07-09 17:52:15,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:52:15,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:52:15,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:52:15,431 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:52:15,431 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645758688] [2021-07-09 17:52:15,431 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645758688] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:52:15,431 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:52:15,431 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:52:15,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967862198] [2021-07-09 17:52:15,432 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:52:15,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:52:15,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:52:15,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:52:15,432 INFO L87 Difference]: Start difference. First operand 8790 states and 31353 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) [2021-07-09 17:52:19,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:52:19,388 INFO L93 Difference]: Finished difference Result 13159 states and 46549 transitions. [2021-07-09 17:52:19,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-07-09 17:52:19,388 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 [2021-07-09 17:52:19,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:52:19,417 INFO L225 Difference]: With dead ends: 13159 [2021-07-09 17:52:19,417 INFO L226 Difference]: Without dead ends: 13062 [2021-07-09 17:52:19,418 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3490 ImplicationChecksByTransitivity, 2381.8ms TimeCoverageRelationStatistics Valid=883, Invalid=9623, Unknown=0, NotChecked=0, Total=10506 [2021-07-09 17:52:19,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13062 states. [2021-07-09 17:52:19,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13062 to 8804. [2021-07-09 17:52:19,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8804 states, 8803 states have (on average 3.564693854367829) internal successors, (31380), 8803 states have internal predecessors, (31380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:19,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8804 states to 8804 states and 31380 transitions. [2021-07-09 17:52:19,600 INFO L78 Accepts]: Start accepts. Automaton has 8804 states and 31380 transitions. Word has length 47 [2021-07-09 17:52:19,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:52:19,600 INFO L482 AbstractCegarLoop]: Abstraction has 8804 states and 31380 transitions. [2021-07-09 17:52:19,600 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) [2021-07-09 17:52:19,600 INFO L276 IsEmpty]: Start isEmpty. Operand 8804 states and 31380 transitions. [2021-07-09 17:52:19,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:52:19,614 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:52:19,614 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:52:19,614 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2021-07-09 17:52:19,614 INFO L430 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:52:19,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:52:19,614 INFO L82 PathProgramCache]: Analyzing trace with hash -2141124292, now seen corresponding path program 189 times [2021-07-09 17:52:19,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:52:19,614 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106455836] [2021-07-09 17:52:19,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:52:19,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:52:19,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:52:19,849 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:52:19,849 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106455836] [2021-07-09 17:52:19,849 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106455836] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:52:19,849 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:52:19,849 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:52:19,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221782715] [2021-07-09 17:52:19,850 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:52:19,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:52:19,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:52:19,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:52:19,850 INFO L87 Difference]: Start difference. First operand 8804 states and 31380 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:24,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:52:24,149 INFO L93 Difference]: Finished difference Result 13458 states and 47653 transitions. [2021-07-09 17:52:24,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-07-09 17:52:24,149 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:52:24,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:52:24,179 INFO L225 Difference]: With dead ends: 13458 [2021-07-09 17:52:24,179 INFO L226 Difference]: Without dead ends: 13341 [2021-07-09 17:52:24,181 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4019 ImplicationChecksByTransitivity, 2688.1ms TimeCoverageRelationStatistics Valid=983, Invalid=11007, Unknown=0, NotChecked=0, Total=11990 [2021-07-09 17:52:24,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13341 states. [2021-07-09 17:52:24,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13341 to 8778. [2021-07-09 17:52:24,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8778 states, 8777 states have (on average 3.567847783980859) internal successors, (31315), 8777 states have internal predecessors, (31315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:24,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8778 states to 8778 states and 31315 transitions. [2021-07-09 17:52:24,424 INFO L78 Accepts]: Start accepts. Automaton has 8778 states and 31315 transitions. Word has length 47 [2021-07-09 17:52:24,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:52:24,424 INFO L482 AbstractCegarLoop]: Abstraction has 8778 states and 31315 transitions. [2021-07-09 17:52:24,424 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:24,424 INFO L276 IsEmpty]: Start isEmpty. Operand 8778 states and 31315 transitions. [2021-07-09 17:52:24,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:52:24,438 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:52:24,438 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:52:24,438 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2021-07-09 17:52:24,438 INFO L430 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:52:24,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:52:24,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1066695164, now seen corresponding path program 190 times [2021-07-09 17:52:24,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:52:24,438 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367522959] [2021-07-09 17:52:24,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:52:24,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:52:24,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:52:24,659 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:52:24,659 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367522959] [2021-07-09 17:52:24,659 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367522959] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:52:24,659 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:52:24,659 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:52:24,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327389433] [2021-07-09 17:52:24,659 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:52:24,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:52:24,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:52:24,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:52:24,660 INFO L87 Difference]: Start difference. First operand 8778 states and 31315 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:27,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:52:27,828 INFO L93 Difference]: Finished difference Result 13381 states and 47217 transitions. [2021-07-09 17:52:27,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-07-09 17:52:27,828 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:52:27,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:52:27,857 INFO L225 Difference]: With dead ends: 13381 [2021-07-09 17:52:27,857 INFO L226 Difference]: Without dead ends: 13254 [2021-07-09 17:52:27,858 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2057 ImplicationChecksByTransitivity, 1778.6ms TimeCoverageRelationStatistics Valid=572, Invalid=6400, Unknown=0, NotChecked=0, Total=6972 [2021-07-09 17:52:27,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13254 states. [2021-07-09 17:52:28,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13254 to 8810. [2021-07-09 17:52:28,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8810 states, 8809 states have (on average 3.5655579520944487) internal successors, (31409), 8809 states have internal predecessors, (31409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:28,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8810 states to 8810 states and 31409 transitions. [2021-07-09 17:52:28,031 INFO L78 Accepts]: Start accepts. Automaton has 8810 states and 31409 transitions. Word has length 47 [2021-07-09 17:52:28,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:52:28,031 INFO L482 AbstractCegarLoop]: Abstraction has 8810 states and 31409 transitions. [2021-07-09 17:52:28,032 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:28,032 INFO L276 IsEmpty]: Start isEmpty. Operand 8810 states and 31409 transitions. [2021-07-09 17:52:28,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:52:28,045 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:52:28,045 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:52:28,046 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2021-07-09 17:52:28,046 INFO L430 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:52:28,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:52:28,046 INFO L82 PathProgramCache]: Analyzing trace with hash -304502242, now seen corresponding path program 191 times [2021-07-09 17:52:28,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:52:28,046 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855656891] [2021-07-09 17:52:28,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:52:28,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:52:28,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:52:28,269 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:52:28,269 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855656891] [2021-07-09 17:52:28,269 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855656891] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:52:28,269 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:52:28,269 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:52:28,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411186642] [2021-07-09 17:52:28,270 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:52:28,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:52:28,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:52:28,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:52:28,270 INFO L87 Difference]: Start difference. First operand 8810 states and 31409 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:31,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:52:31,298 INFO L93 Difference]: Finished difference Result 13062 states and 46105 transitions. [2021-07-09 17:52:31,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-07-09 17:52:31,299 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:52:31,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:52:31,329 INFO L225 Difference]: With dead ends: 13062 [2021-07-09 17:52:31,329 INFO L226 Difference]: Without dead ends: 12962 [2021-07-09 17:52:31,330 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1882 ImplicationChecksByTransitivity, 1735.5ms TimeCoverageRelationStatistics Valid=557, Invalid=5923, Unknown=0, NotChecked=0, Total=6480 [2021-07-09 17:52:31,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12962 states. [2021-07-09 17:52:31,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12962 to 8837. [2021-07-09 17:52:31,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8837 states, 8836 states have (on average 3.562132186509733) internal successors, (31475), 8836 states have internal predecessors, (31475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:31,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8837 states to 8837 states and 31475 transitions. [2021-07-09 17:52:31,511 INFO L78 Accepts]: Start accepts. Automaton has 8837 states and 31475 transitions. Word has length 47 [2021-07-09 17:52:31,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:52:31,511 INFO L482 AbstractCegarLoop]: Abstraction has 8837 states and 31475 transitions. [2021-07-09 17:52:31,511 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:31,511 INFO L276 IsEmpty]: Start isEmpty. Operand 8837 states and 31475 transitions. [2021-07-09 17:52:31,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:52:31,526 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:52:31,526 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:52:31,526 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2021-07-09 17:52:31,526 INFO L430 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:52:31,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:52:31,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1739569732, now seen corresponding path program 192 times [2021-07-09 17:52:31,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:52:31,526 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437016267] [2021-07-09 17:52:31,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:52:31,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:52:31,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:52:31,777 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:52:31,777 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437016267] [2021-07-09 17:52:31,778 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437016267] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:52:31,779 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:52:31,779 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:52:31,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290318459] [2021-07-09 17:52:31,779 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:52:31,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:52:31,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:52:31,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:52:31,780 INFO L87 Difference]: Start difference. First operand 8837 states and 31475 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:35,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:52:35,223 INFO L93 Difference]: Finished difference Result 13918 states and 49230 transitions. [2021-07-09 17:52:35,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-07-09 17:52:35,223 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:52:35,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:52:35,255 INFO L225 Difference]: With dead ends: 13918 [2021-07-09 17:52:35,255 INFO L226 Difference]: Without dead ends: 13800 [2021-07-09 17:52:35,257 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2533 ImplicationChecksByTransitivity, 1994.2ms TimeCoverageRelationStatistics Valid=652, Invalid=7538, Unknown=0, NotChecked=0, Total=8190 [2021-07-09 17:52:35,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13800 states. [2021-07-09 17:52:35,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13800 to 8810. [2021-07-09 17:52:35,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8810 states, 8809 states have (on average 3.565103871040981) internal successors, (31405), 8809 states have internal predecessors, (31405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:35,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8810 states to 8810 states and 31405 transitions. [2021-07-09 17:52:35,494 INFO L78 Accepts]: Start accepts. Automaton has 8810 states and 31405 transitions. Word has length 47 [2021-07-09 17:52:35,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:52:35,494 INFO L482 AbstractCegarLoop]: Abstraction has 8810 states and 31405 transitions. [2021-07-09 17:52:35,494 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:35,494 INFO L276 IsEmpty]: Start isEmpty. Operand 8810 states and 31405 transitions. [2021-07-09 17:52:35,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:52:35,509 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:52:35,509 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:52:35,509 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2021-07-09 17:52:35,509 INFO L430 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:52:35,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:52:35,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1181703390, now seen corresponding path program 193 times [2021-07-09 17:52:35,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:52:35,510 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833713770] [2021-07-09 17:52:35,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:52:35,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:52:35,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:52:35,724 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:52:35,724 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833713770] [2021-07-09 17:52:35,724 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833713770] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:52:35,725 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:52:35,725 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:52:35,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044317991] [2021-07-09 17:52:35,725 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:52:35,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:52:35,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:52:35,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:52:35,725 INFO L87 Difference]: Start difference. First operand 8810 states and 31405 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:39,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:52:39,324 INFO L93 Difference]: Finished difference Result 13889 states and 49051 transitions. [2021-07-09 17:52:39,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-07-09 17:52:39,324 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:52:39,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:52:39,356 INFO L225 Difference]: With dead ends: 13889 [2021-07-09 17:52:39,356 INFO L226 Difference]: Without dead ends: 13800 [2021-07-09 17:52:39,357 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2744 ImplicationChecksByTransitivity, 2194.0ms TimeCoverageRelationStatistics Valid=704, Invalid=8038, Unknown=0, NotChecked=0, Total=8742 [2021-07-09 17:52:39,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13800 states. [2021-07-09 17:52:39,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13800 to 8818. [2021-07-09 17:52:39,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8818 states, 8817 states have (on average 3.564137461721674) internal successors, (31425), 8817 states have internal predecessors, (31425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:39,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8818 states to 8818 states and 31425 transitions. [2021-07-09 17:52:39,539 INFO L78 Accepts]: Start accepts. Automaton has 8818 states and 31425 transitions. Word has length 47 [2021-07-09 17:52:39,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:52:39,539 INFO L482 AbstractCegarLoop]: Abstraction has 8818 states and 31425 transitions. [2021-07-09 17:52:39,539 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:39,539 INFO L276 IsEmpty]: Start isEmpty. Operand 8818 states and 31425 transitions. [2021-07-09 17:52:39,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:52:39,553 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:52:39,553 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:52:39,553 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2021-07-09 17:52:39,553 INFO L430 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:52:39,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:52:39,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1703636190, now seen corresponding path program 194 times [2021-07-09 17:52:39,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:52:39,553 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364678825] [2021-07-09 17:52:39,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:52:39,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:52:39,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:52:39,774 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:52:39,774 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364678825] [2021-07-09 17:52:39,774 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364678825] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:52:39,774 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:52:39,774 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:52:39,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859897559] [2021-07-09 17:52:39,774 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:52:39,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:52:39,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:52:39,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:52:39,774 INFO L87 Difference]: Start difference. First operand 8818 states and 31425 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:42,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:52:42,892 INFO L93 Difference]: Finished difference Result 13367 states and 47168 transitions. [2021-07-09 17:52:42,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-07-09 17:52:42,893 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:52:42,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:52:42,923 INFO L225 Difference]: With dead ends: 13367 [2021-07-09 17:52:42,923 INFO L226 Difference]: Without dead ends: 13261 [2021-07-09 17:52:42,924 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1875 ImplicationChecksByTransitivity, 1803.5ms TimeCoverageRelationStatistics Valid=584, Invalid=5896, Unknown=0, NotChecked=0, Total=6480 [2021-07-09 17:52:42,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13261 states. [2021-07-09 17:52:43,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13261 to 8812. [2021-07-09 17:52:43,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8812 states, 8811 states have (on average 3.564635115196913) internal successors, (31408), 8811 states have internal predecessors, (31408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:43,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8812 states to 8812 states and 31408 transitions. [2021-07-09 17:52:43,105 INFO L78 Accepts]: Start accepts. Automaton has 8812 states and 31408 transitions. Word has length 47 [2021-07-09 17:52:43,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:52:43,105 INFO L482 AbstractCegarLoop]: Abstraction has 8812 states and 31408 transitions. [2021-07-09 17:52:43,105 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:43,105 INFO L276 IsEmpty]: Start isEmpty. Operand 8812 states and 31408 transitions. [2021-07-09 17:52:43,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:52:43,120 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:52:43,120 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:52:43,120 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2021-07-09 17:52:43,120 INFO L430 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:52:43,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:52:43,120 INFO L82 PathProgramCache]: Analyzing trace with hash 496534716, now seen corresponding path program 195 times [2021-07-09 17:52:43,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:52:43,120 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104248322] [2021-07-09 17:52:43,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:52:43,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:52:43,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:52:43,371 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:52:43,371 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104248322] [2021-07-09 17:52:43,371 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104248322] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:52:43,371 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:52:43,371 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:52:43,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331740492] [2021-07-09 17:52:43,371 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:52:43,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:52:43,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:52:43,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:52:43,371 INFO L87 Difference]: Start difference. First operand 8812 states and 31408 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:46,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:52:46,639 INFO L93 Difference]: Finished difference Result 13612 states and 48120 transitions. [2021-07-09 17:52:46,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-07-09 17:52:46,639 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:52:46,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:52:46,670 INFO L225 Difference]: With dead ends: 13612 [2021-07-09 17:52:46,670 INFO L226 Difference]: Without dead ends: 13512 [2021-07-09 17:52:46,670 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2185 ImplicationChecksByTransitivity, 1911.8ms TimeCoverageRelationStatistics Valid=635, Invalid=6675, Unknown=0, NotChecked=0, Total=7310 [2021-07-09 17:52:46,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13512 states. [2021-07-09 17:52:46,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13512 to 8821. [2021-07-09 17:52:46,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8821 states, 8820 states have (on average 3.5634920634920637) internal successors, (31430), 8820 states have internal predecessors, (31430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:46,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8821 states to 8821 states and 31430 transitions. [2021-07-09 17:52:46,837 INFO L78 Accepts]: Start accepts. Automaton has 8821 states and 31430 transitions. Word has length 47 [2021-07-09 17:52:46,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:52:46,837 INFO L482 AbstractCegarLoop]: Abstraction has 8821 states and 31430 transitions. [2021-07-09 17:52:46,837 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:46,837 INFO L276 IsEmpty]: Start isEmpty. Operand 8821 states and 31430 transitions. [2021-07-09 17:52:46,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:52:46,851 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:52:46,851 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:52:46,851 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2021-07-09 17:52:46,851 INFO L430 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:52:46,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:52:46,851 INFO L82 PathProgramCache]: Analyzing trace with hash 430472158, now seen corresponding path program 196 times [2021-07-09 17:52:46,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:52:46,851 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434809810] [2021-07-09 17:52:46,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:52:46,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:52:47,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:52:47,065 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:52:47,065 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434809810] [2021-07-09 17:52:47,065 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434809810] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:52:47,065 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:52:47,065 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:52:47,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087974811] [2021-07-09 17:52:47,065 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:52:47,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:52:47,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:52:47,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:52:47,065 INFO L87 Difference]: Start difference. First operand 8821 states and 31430 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:50,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:52:50,705 INFO L93 Difference]: Finished difference Result 14468 states and 51245 transitions. [2021-07-09 17:52:50,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-07-09 17:52:50,705 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:52:50,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:52:50,740 INFO L225 Difference]: With dead ends: 14468 [2021-07-09 17:52:50,740 INFO L226 Difference]: Without dead ends: 14362 [2021-07-09 17:52:50,741 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2884 ImplicationChecksByTransitivity, 2083.9ms TimeCoverageRelationStatistics Valid=724, Invalid=8396, Unknown=0, NotChecked=0, Total=9120 [2021-07-09 17:52:50,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14362 states. [2021-07-09 17:52:50,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14362 to 8806. [2021-07-09 17:52:50,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8806 states, 8805 states have (on average 3.565587734241908) internal successors, (31395), 8805 states have internal predecessors, (31395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:50,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8806 states to 8806 states and 31395 transitions. [2021-07-09 17:52:50,962 INFO L78 Accepts]: Start accepts. Automaton has 8806 states and 31395 transitions. Word has length 47 [2021-07-09 17:52:50,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:52:50,962 INFO L482 AbstractCegarLoop]: Abstraction has 8806 states and 31395 transitions. [2021-07-09 17:52:50,962 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:50,962 INFO L276 IsEmpty]: Start isEmpty. Operand 8806 states and 31395 transitions. [2021-07-09 17:52:50,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:52:50,978 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:52:50,978 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:52:50,978 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2021-07-09 17:52:50,978 INFO L430 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:52:50,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:52:50,978 INFO L82 PathProgramCache]: Analyzing trace with hash 2094935804, now seen corresponding path program 197 times [2021-07-09 17:52:50,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:52:50,978 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228231633] [2021-07-09 17:52:50,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:52:50,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:52:51,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:52:51,196 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:52:51,196 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228231633] [2021-07-09 17:52:51,196 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228231633] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:52:51,197 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:52:51,197 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:52:51,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103490551] [2021-07-09 17:52:51,197 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:52:51,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:52:51,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:52:51,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:52:51,197 INFO L87 Difference]: Start difference. First operand 8806 states and 31395 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:54,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:52:54,396 INFO L93 Difference]: Finished difference Result 12311 states and 43489 transitions. [2021-07-09 17:52:54,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-07-09 17:52:54,397 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:52:54,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:52:54,426 INFO L225 Difference]: With dead ends: 12311 [2021-07-09 17:52:54,426 INFO L226 Difference]: Without dead ends: 12184 [2021-07-09 17:52:54,427 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2045 ImplicationChecksByTransitivity, 1752.8ms TimeCoverageRelationStatistics Valid=586, Invalid=6386, Unknown=0, NotChecked=0, Total=6972 [2021-07-09 17:52:54,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12184 states. [2021-07-09 17:52:54,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12184 to 8828. [2021-07-09 17:52:54,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8828 states, 8827 states have (on average 3.563951512405121) internal successors, (31459), 8827 states have internal predecessors, (31459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:54,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8828 states to 8828 states and 31459 transitions. [2021-07-09 17:52:54,700 INFO L78 Accepts]: Start accepts. Automaton has 8828 states and 31459 transitions. Word has length 47 [2021-07-09 17:52:54,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:52:54,700 INFO L482 AbstractCegarLoop]: Abstraction has 8828 states and 31459 transitions. [2021-07-09 17:52:54,700 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:54,700 INFO L276 IsEmpty]: Start isEmpty. Operand 8828 states and 31459 transitions. [2021-07-09 17:52:54,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:52:54,715 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:52:54,715 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:52:54,715 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2021-07-09 17:52:54,715 INFO L430 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:52:54,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:52:54,715 INFO L82 PathProgramCache]: Analyzing trace with hash -372660232, now seen corresponding path program 198 times [2021-07-09 17:52:54,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:52:54,715 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844135460] [2021-07-09 17:52:54,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:52:54,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:52:54,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:52:54,938 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:52:54,938 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844135460] [2021-07-09 17:52:54,938 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844135460] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:52:54,938 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:52:54,938 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:52:54,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635438261] [2021-07-09 17:52:54,938 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:52:54,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:52:54,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:52:54,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:52:54,939 INFO L87 Difference]: Start difference. First operand 8828 states and 31459 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:57,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:52:57,984 INFO L93 Difference]: Finished difference Result 11360 states and 40284 transitions. [2021-07-09 17:52:57,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-07-09 17:52:57,984 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:52:57,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:52:58,011 INFO L225 Difference]: With dead ends: 11360 [2021-07-09 17:52:58,011 INFO L226 Difference]: Without dead ends: 11263 [2021-07-09 17:52:58,012 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2059 ImplicationChecksByTransitivity, 1830.2ms TimeCoverageRelationStatistics Valid=585, Invalid=6387, Unknown=0, NotChecked=0, Total=6972 [2021-07-09 17:52:58,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11263 states. [2021-07-09 17:52:58,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11263 to 8846. [2021-07-09 17:52:58,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8846 states, 8845 states have (on average 3.5617863199547766) internal successors, (31504), 8845 states have internal predecessors, (31504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:58,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8846 states to 8846 states and 31504 transitions. [2021-07-09 17:52:58,196 INFO L78 Accepts]: Start accepts. Automaton has 8846 states and 31504 transitions. Word has length 47 [2021-07-09 17:52:58,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:52:58,196 INFO L482 AbstractCegarLoop]: Abstraction has 8846 states and 31504 transitions. [2021-07-09 17:52:58,196 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:52:58,196 INFO L276 IsEmpty]: Start isEmpty. Operand 8846 states and 31504 transitions. [2021-07-09 17:52:58,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:52:58,211 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:52:58,212 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:52:58,212 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2021-07-09 17:52:58,212 INFO L430 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:52:58,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:52:58,212 INFO L82 PathProgramCache]: Analyzing trace with hash -369986406, now seen corresponding path program 199 times [2021-07-09 17:52:58,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:52:58,212 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76153849] [2021-07-09 17:52:58,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:52:58,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:52:58,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:52:58,431 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:52:58,431 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76153849] [2021-07-09 17:52:58,431 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76153849] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:52:58,431 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:52:58,431 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:52:58,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83027879] [2021-07-09 17:52:58,431 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:52:58,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:52:58,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:52:58,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:52:58,432 INFO L87 Difference]: Start difference. First operand 8846 states and 31504 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:01,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:01,704 INFO L93 Difference]: Finished difference Result 12189 states and 43128 transitions. [2021-07-09 17:53:01,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-07-09 17:53:01,705 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:53:01,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:01,733 INFO L225 Difference]: With dead ends: 12189 [2021-07-09 17:53:01,733 INFO L226 Difference]: Without dead ends: 12080 [2021-07-09 17:53:01,734 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2368 ImplicationChecksByTransitivity, 1913.6ms TimeCoverageRelationStatistics Valid=648, Invalid=7184, Unknown=0, NotChecked=0, Total=7832 [2021-07-09 17:53:01,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12080 states. [2021-07-09 17:53:01,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12080 to 8828. [2021-07-09 17:53:01,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8828 states, 8827 states have (on average 3.5634983573127905) internal successors, (31455), 8827 states have internal predecessors, (31455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:01,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8828 states to 8828 states and 31455 transitions. [2021-07-09 17:53:01,932 INFO L78 Accepts]: Start accepts. Automaton has 8828 states and 31455 transitions. Word has length 47 [2021-07-09 17:53:01,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:01,933 INFO L482 AbstractCegarLoop]: Abstraction has 8828 states and 31455 transitions. [2021-07-09 17:53:01,933 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:01,933 INFO L276 IsEmpty]: Start isEmpty. Operand 8828 states and 31455 transitions. [2021-07-09 17:53:01,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:53:01,948 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:01,948 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:53:01,948 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2021-07-09 17:53:01,948 INFO L430 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:01,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:01,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1678458078, now seen corresponding path program 200 times [2021-07-09 17:53:01,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:01,949 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65874252] [2021-07-09 17:53:01,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:01,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:02,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:02,165 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:02,165 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65874252] [2021-07-09 17:53:02,165 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65874252] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:02,165 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:02,165 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:53:02,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082103180] [2021-07-09 17:53:02,165 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:53:02,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:02,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:53:02,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:53:02,166 INFO L87 Difference]: Start difference. First operand 8828 states and 31455 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:07,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:07,429 INFO L93 Difference]: Finished difference Result 13768 states and 48693 transitions. [2021-07-09 17:53:07,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2021-07-09 17:53:07,429 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:53:07,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:07,464 INFO L225 Difference]: With dead ends: 13768 [2021-07-09 17:53:07,464 INFO L226 Difference]: Without dead ends: 13647 [2021-07-09 17:53:07,465 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5965 ImplicationChecksByTransitivity, 3367.4ms TimeCoverageRelationStatistics Valid=1266, Invalid=15504, Unknown=0, NotChecked=0, Total=16770 [2021-07-09 17:53:07,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13647 states. [2021-07-09 17:53:07,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13647 to 8828. [2021-07-09 17:53:07,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8828 states, 8827 states have (on average 3.5634983573127905) internal successors, (31455), 8827 states have internal predecessors, (31455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:07,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8828 states to 8828 states and 31455 transitions. [2021-07-09 17:53:07,673 INFO L78 Accepts]: Start accepts. Automaton has 8828 states and 31455 transitions. Word has length 47 [2021-07-09 17:53:07,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:07,674 INFO L482 AbstractCegarLoop]: Abstraction has 8828 states and 31455 transitions. [2021-07-09 17:53:07,674 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:07,674 INFO L276 IsEmpty]: Start isEmpty. Operand 8828 states and 31455 transitions. [2021-07-09 17:53:07,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:53:07,689 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:07,690 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:53:07,690 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2021-07-09 17:53:07,690 INFO L430 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:07,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:07,690 INFO L82 PathProgramCache]: Analyzing trace with hash -107036642, now seen corresponding path program 201 times [2021-07-09 17:53:07,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:07,690 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669934479] [2021-07-09 17:53:07,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:07,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:07,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:07,912 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:07,912 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669934479] [2021-07-09 17:53:07,912 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669934479] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:07,912 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:07,912 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:53:07,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987573331] [2021-07-09 17:53:07,912 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:53:07,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:07,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:53:07,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:53:07,913 INFO L87 Difference]: Start difference. First operand 8828 states and 31455 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:12,073 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 24 [2021-07-09 17:53:14,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:14,486 INFO L93 Difference]: Finished difference Result 16125 states and 57332 transitions. [2021-07-09 17:53:14,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2021-07-09 17:53:14,487 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:53:14,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:14,527 INFO L225 Difference]: With dead ends: 16125 [2021-07-09 17:53:14,527 INFO L226 Difference]: Without dead ends: 15933 [2021-07-09 17:53:14,529 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8957 ImplicationChecksByTransitivity, 4115.7ms TimeCoverageRelationStatistics Valid=1602, Invalid=22268, Unknown=0, NotChecked=0, Total=23870 [2021-07-09 17:53:14,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15933 states. [2021-07-09 17:53:14,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15933 to 8837. [2021-07-09 17:53:14,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8837 states, 8836 states have (on average 3.5639429606156634) internal successors, (31491), 8836 states have internal predecessors, (31491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:14,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8837 states to 8837 states and 31491 transitions. [2021-07-09 17:53:14,789 INFO L78 Accepts]: Start accepts. Automaton has 8837 states and 31491 transitions. Word has length 47 [2021-07-09 17:53:14,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:14,789 INFO L482 AbstractCegarLoop]: Abstraction has 8837 states and 31491 transitions. [2021-07-09 17:53:14,789 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:14,790 INFO L276 IsEmpty]: Start isEmpty. Operand 8837 states and 31491 transitions. [2021-07-09 17:53:14,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:53:14,804 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:14,804 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:53:14,804 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2021-07-09 17:53:14,804 INFO L430 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:14,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:14,805 INFO L82 PathProgramCache]: Analyzing trace with hash 191855036, now seen corresponding path program 202 times [2021-07-09 17:53:14,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:14,805 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093706458] [2021-07-09 17:53:14,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:14,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:15,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:15,023 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:15,023 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093706458] [2021-07-09 17:53:15,023 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093706458] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:15,023 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:15,023 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:53:15,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67401596] [2021-07-09 17:53:15,023 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:53:15,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:15,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:53:15,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:53:15,024 INFO L87 Difference]: Start difference. First operand 8837 states and 31491 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:19,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:19,051 INFO L93 Difference]: Finished difference Result 12966 states and 45709 transitions. [2021-07-09 17:53:19,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-07-09 17:53:19,051 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:53:19,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:19,085 INFO L225 Difference]: With dead ends: 12966 [2021-07-09 17:53:19,085 INFO L226 Difference]: Without dead ends: 12869 [2021-07-09 17:53:19,086 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3663 ImplicationChecksByTransitivity, 2479.8ms TimeCoverageRelationStatistics Valid=847, Invalid=10283, Unknown=0, NotChecked=0, Total=11130 [2021-07-09 17:53:19,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12869 states. [2021-07-09 17:53:19,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12869 to 8845. [2021-07-09 17:53:19,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8845 states, 8844 states have (on average 3.5627544097693353) internal successors, (31509), 8844 states have internal predecessors, (31509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:19,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8845 states to 8845 states and 31509 transitions. [2021-07-09 17:53:19,287 INFO L78 Accepts]: Start accepts. Automaton has 8845 states and 31509 transitions. Word has length 47 [2021-07-09 17:53:19,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:19,287 INFO L482 AbstractCegarLoop]: Abstraction has 8845 states and 31509 transitions. [2021-07-09 17:53:19,287 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:19,287 INFO L276 IsEmpty]: Start isEmpty. Operand 8845 states and 31509 transitions. [2021-07-09 17:53:19,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:53:19,302 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:19,302 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:53:19,302 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2021-07-09 17:53:19,302 INFO L430 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:19,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:19,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1533565474, now seen corresponding path program 203 times [2021-07-09 17:53:19,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:19,302 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109275242] [2021-07-09 17:53:19,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:19,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:19,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:19,522 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:19,522 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109275242] [2021-07-09 17:53:19,522 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109275242] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:19,522 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:19,522 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:53:19,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004322186] [2021-07-09 17:53:19,522 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:53:19,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:19,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:53:19,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:53:19,522 INFO L87 Difference]: Start difference. First operand 8845 states and 31509 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:24,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:24,085 INFO L93 Difference]: Finished difference Result 13193 states and 46752 transitions. [2021-07-09 17:53:24,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2021-07-09 17:53:24,085 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:53:24,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:24,118 INFO L225 Difference]: With dead ends: 13193 [2021-07-09 17:53:24,118 INFO L226 Difference]: Without dead ends: 13090 [2021-07-09 17:53:24,119 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4591 ImplicationChecksByTransitivity, 2872.0ms TimeCoverageRelationStatistics Valid=1091, Invalid=12481, Unknown=0, NotChecked=0, Total=13572 [2021-07-09 17:53:24,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13090 states. [2021-07-09 17:53:24,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13090 to 8833. [2021-07-09 17:53:24,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8833 states, 8832 states have (on average 3.564651268115942) internal successors, (31483), 8832 states have internal predecessors, (31483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:24,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8833 states to 8833 states and 31483 transitions. [2021-07-09 17:53:24,316 INFO L78 Accepts]: Start accepts. Automaton has 8833 states and 31483 transitions. Word has length 47 [2021-07-09 17:53:24,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:24,316 INFO L482 AbstractCegarLoop]: Abstraction has 8833 states and 31483 transitions. [2021-07-09 17:53:24,316 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:24,316 INFO L276 IsEmpty]: Start isEmpty. Operand 8833 states and 31483 transitions. [2021-07-09 17:53:24,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:53:24,331 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:24,331 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:53:24,331 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2021-07-09 17:53:24,331 INFO L430 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:24,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:24,331 INFO L82 PathProgramCache]: Analyzing trace with hash -279872324, now seen corresponding path program 204 times [2021-07-09 17:53:24,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:24,331 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259205773] [2021-07-09 17:53:24,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:24,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:24,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:24,571 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:24,571 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259205773] [2021-07-09 17:53:24,572 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259205773] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:24,572 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:24,572 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:53:24,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290227191] [2021-07-09 17:53:24,572 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:53:24,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:24,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:53:24,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:53:24,572 INFO L87 Difference]: Start difference. First operand 8833 states and 31483 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:27,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:27,756 INFO L93 Difference]: Finished difference Result 12744 states and 45096 transitions. [2021-07-09 17:53:27,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-07-09 17:53:27,756 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:53:27,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:27,791 INFO L225 Difference]: With dead ends: 12744 [2021-07-09 17:53:27,791 INFO L226 Difference]: Without dead ends: 12644 [2021-07-09 17:53:27,792 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1822 ImplicationChecksByTransitivity, 1750.4ms TimeCoverageRelationStatistics Valid=534, Invalid=5786, Unknown=0, NotChecked=0, Total=6320 [2021-07-09 17:53:27,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12644 states. [2021-07-09 17:53:27,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12644 to 8842. [2021-07-09 17:53:27,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8842 states, 8841 states have (on average 3.563510915054858) internal successors, (31505), 8841 states have internal predecessors, (31505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:27,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8842 states to 8842 states and 31505 transitions. [2021-07-09 17:53:27,990 INFO L78 Accepts]: Start accepts. Automaton has 8842 states and 31505 transitions. Word has length 47 [2021-07-09 17:53:27,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:27,991 INFO L482 AbstractCegarLoop]: Abstraction has 8842 states and 31505 transitions. [2021-07-09 17:53:27,991 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:27,991 INFO L276 IsEmpty]: Start isEmpty. Operand 8842 states and 31505 transitions. [2021-07-09 17:53:28,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:53:28,005 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:28,005 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:53:28,005 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2021-07-09 17:53:28,005 INFO L430 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:28,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:28,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1714939814, now seen corresponding path program 205 times [2021-07-09 17:53:28,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:28,006 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736434617] [2021-07-09 17:53:28,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:28,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:28,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:28,221 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:28,221 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736434617] [2021-07-09 17:53:28,221 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736434617] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:28,221 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:28,221 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:53:28,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772167734] [2021-07-09 17:53:28,221 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:53:28,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:28,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:53:28,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:53:28,222 INFO L87 Difference]: Start difference. First operand 8842 states and 31505 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:31,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:31,042 INFO L93 Difference]: Finished difference Result 11532 states and 40861 transitions. [2021-07-09 17:53:31,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-07-09 17:53:31,042 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:53:31,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:31,068 INFO L225 Difference]: With dead ends: 11532 [2021-07-09 17:53:31,068 INFO L226 Difference]: Without dead ends: 11414 [2021-07-09 17:53:31,069 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1531 ImplicationChecksByTransitivity, 1541.9ms TimeCoverageRelationStatistics Valid=482, Invalid=5068, Unknown=0, NotChecked=0, Total=5550 [2021-07-09 17:53:31,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11414 states. [2021-07-09 17:53:31,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11414 to 8842. [2021-07-09 17:53:31,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8842 states, 8841 states have (on average 3.5628322587942542) internal successors, (31499), 8841 states have internal predecessors, (31499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:31,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8842 states to 8842 states and 31499 transitions. [2021-07-09 17:53:31,257 INFO L78 Accepts]: Start accepts. Automaton has 8842 states and 31499 transitions. Word has length 47 [2021-07-09 17:53:31,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:31,257 INFO L482 AbstractCegarLoop]: Abstraction has 8842 states and 31499 transitions. [2021-07-09 17:53:31,257 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:31,257 INFO L276 IsEmpty]: Start isEmpty. Operand 8842 states and 31499 transitions. [2021-07-09 17:53:31,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:53:31,273 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:31,273 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:53:31,273 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2021-07-09 17:53:31,273 INFO L430 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:31,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:31,273 INFO L82 PathProgramCache]: Analyzing trace with hash 771909014, now seen corresponding path program 206 times [2021-07-09 17:53:31,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:31,274 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405166761] [2021-07-09 17:53:31,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:31,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:31,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:31,541 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:31,541 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405166761] [2021-07-09 17:53:31,541 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405166761] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:31,541 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:31,541 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:53:31,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888985610] [2021-07-09 17:53:31,541 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:53:31,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:31,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:53:31,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:53:31,541 INFO L87 Difference]: Start difference. First operand 8842 states and 31499 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:34,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:34,670 INFO L93 Difference]: Finished difference Result 11390 states and 40435 transitions. [2021-07-09 17:53:34,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-07-09 17:53:34,670 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:53:34,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:34,697 INFO L225 Difference]: With dead ends: 11390 [2021-07-09 17:53:34,697 INFO L226 Difference]: Without dead ends: 11293 [2021-07-09 17:53:34,697 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1873 ImplicationChecksByTransitivity, 1769.8ms TimeCoverageRelationStatistics Valid=543, Invalid=5937, Unknown=0, NotChecked=0, Total=6480 [2021-07-09 17:53:34,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11293 states. [2021-07-09 17:53:34,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11293 to 8848. [2021-07-09 17:53:34,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8848 states, 8847 states have (on average 3.5621114502091102) internal successors, (31514), 8847 states have internal predecessors, (31514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:34,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8848 states to 8848 states and 31514 transitions. [2021-07-09 17:53:34,873 INFO L78 Accepts]: Start accepts. Automaton has 8848 states and 31514 transitions. Word has length 47 [2021-07-09 17:53:34,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:34,873 INFO L482 AbstractCegarLoop]: Abstraction has 8848 states and 31514 transitions. [2021-07-09 17:53:34,873 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:34,873 INFO L276 IsEmpty]: Start isEmpty. Operand 8848 states and 31514 transitions. [2021-07-09 17:53:34,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:53:34,888 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:34,888 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:53:34,888 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2021-07-09 17:53:34,888 INFO L430 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:34,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:34,888 INFO L82 PathProgramCache]: Analyzing trace with hash 774582840, now seen corresponding path program 207 times [2021-07-09 17:53:34,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:34,888 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468177197] [2021-07-09 17:53:34,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:34,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:35,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:35,107 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:35,107 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468177197] [2021-07-09 17:53:35,107 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468177197] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:35,107 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:35,107 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:53:35,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600986346] [2021-07-09 17:53:35,107 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:53:35,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:35,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:53:35,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:53:35,108 INFO L87 Difference]: Start difference. First operand 8848 states and 31514 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:37,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:37,771 INFO L93 Difference]: Finished difference Result 10683 states and 37856 transitions. [2021-07-09 17:53:37,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-07-09 17:53:37,772 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:53:37,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:37,795 INFO L225 Difference]: With dead ends: 10683 [2021-07-09 17:53:37,795 INFO L226 Difference]: Without dead ends: 10574 [2021-07-09 17:53:37,796 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1315 ImplicationChecksByTransitivity, 1538.5ms TimeCoverageRelationStatistics Valid=456, Invalid=4514, Unknown=0, NotChecked=0, Total=4970 [2021-07-09 17:53:37,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10574 states. [2021-07-09 17:53:37,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10574 to 8830. [2021-07-09 17:53:37,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8830 states, 8829 states have (on average 3.563597236380111) internal successors, (31463), 8829 states have internal predecessors, (31463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:37,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8830 states to 8830 states and 31463 transitions. [2021-07-09 17:53:37,962 INFO L78 Accepts]: Start accepts. Automaton has 8830 states and 31463 transitions. Word has length 47 [2021-07-09 17:53:37,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:37,962 INFO L482 AbstractCegarLoop]: Abstraction has 8830 states and 31463 transitions. [2021-07-09 17:53:37,962 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:37,963 INFO L276 IsEmpty]: Start isEmpty. Operand 8830 states and 31463 transitions. [2021-07-09 17:53:37,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:53:37,978 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:37,978 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:53:37,978 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2021-07-09 17:53:37,978 INFO L430 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:37,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:37,978 INFO L82 PathProgramCache]: Analyzing trace with hash -482580522, now seen corresponding path program 208 times [2021-07-09 17:53:37,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:37,978 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187366746] [2021-07-09 17:53:37,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:37,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:38,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:38,188 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:38,188 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187366746] [2021-07-09 17:53:38,188 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187366746] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:38,188 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:38,188 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:53:38,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955833104] [2021-07-09 17:53:38,188 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:53:38,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:38,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:53:38,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:53:38,188 INFO L87 Difference]: Start difference. First operand 8830 states and 31463 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) [2021-07-09 17:53:41,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:41,195 INFO L93 Difference]: Finished difference Result 12830 states and 45389 transitions. [2021-07-09 17:53:41,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-07-09 17:53:41,196 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 [2021-07-09 17:53:41,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:41,228 INFO L225 Difference]: With dead ends: 12830 [2021-07-09 17:53:41,228 INFO L226 Difference]: Without dead ends: 12730 [2021-07-09 17:53:41,229 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1641 ImplicationChecksByTransitivity, 1627.4ms TimeCoverageRelationStatistics Valid=506, Invalid=5194, Unknown=0, NotChecked=0, Total=5700 [2021-07-09 17:53:41,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12730 states. [2021-07-09 17:53:41,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12730 to 8833. [2021-07-09 17:53:41,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8833 states, 8832 states have (on average 3.5637454710144927) internal successors, (31475), 8832 states have internal predecessors, (31475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:41,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8833 states to 8833 states and 31475 transitions. [2021-07-09 17:53:41,439 INFO L78 Accepts]: Start accepts. Automaton has 8833 states and 31475 transitions. Word has length 47 [2021-07-09 17:53:41,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:41,439 INFO L482 AbstractCegarLoop]: Abstraction has 8833 states and 31475 transitions. [2021-07-09 17:53:41,439 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) [2021-07-09 17:53:41,439 INFO L276 IsEmpty]: Start isEmpty. Operand 8833 states and 31475 transitions. [2021-07-09 17:53:41,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:53:41,455 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:41,455 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:53:41,455 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2021-07-09 17:53:41,455 INFO L430 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:41,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:41,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1892548664, now seen corresponding path program 209 times [2021-07-09 17:53:41,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:41,455 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572154787] [2021-07-09 17:53:41,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:41,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:41,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:41,661 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:41,661 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572154787] [2021-07-09 17:53:41,661 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572154787] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:41,661 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:41,661 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:53:41,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66769525] [2021-07-09 17:53:41,661 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:53:41,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:41,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:53:41,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:53:41,662 INFO L87 Difference]: Start difference. First operand 8833 states and 31475 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) [2021-07-09 17:53:44,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:44,555 INFO L93 Difference]: Finished difference Result 11794 states and 41896 transitions. [2021-07-09 17:53:44,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-07-09 17:53:44,556 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 [2021-07-09 17:53:44,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:44,584 INFO L225 Difference]: With dead ends: 11794 [2021-07-09 17:53:44,584 INFO L226 Difference]: Without dead ends: 11688 [2021-07-09 17:53:44,585 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1807 ImplicationChecksByTransitivity, 1635.1ms TimeCoverageRelationStatistics Valid=528, Invalid=5634, Unknown=0, NotChecked=0, Total=6162 [2021-07-09 17:53:44,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11688 states. [2021-07-09 17:53:44,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11688 to 8836. [2021-07-09 17:53:44,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8836 states, 8835 states have (on average 3.563554046406338) internal successors, (31484), 8835 states have internal predecessors, (31484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:44,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8836 states to 8836 states and 31484 transitions. [2021-07-09 17:53:44,780 INFO L78 Accepts]: Start accepts. Automaton has 8836 states and 31484 transitions. Word has length 47 [2021-07-09 17:53:44,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:44,780 INFO L482 AbstractCegarLoop]: Abstraction has 8836 states and 31484 transitions. [2021-07-09 17:53:44,780 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) [2021-07-09 17:53:44,780 INFO L276 IsEmpty]: Start isEmpty. Operand 8836 states and 31484 transitions. [2021-07-09 17:53:44,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:53:44,796 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:44,796 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:53:44,796 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2021-07-09 17:53:44,796 INFO L430 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:44,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:44,796 INFO L82 PathProgramCache]: Analyzing trace with hash 2086966264, now seen corresponding path program 210 times [2021-07-09 17:53:44,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:44,796 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739175670] [2021-07-09 17:53:44,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:44,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:45,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:45,013 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:45,013 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739175670] [2021-07-09 17:53:45,014 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739175670] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:45,014 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:45,014 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:53:45,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203975156] [2021-07-09 17:53:45,014 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:53:45,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:45,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:53:45,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:53:45,014 INFO L87 Difference]: Start difference. First operand 8836 states and 31484 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:48,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:48,223 INFO L93 Difference]: Finished difference Result 13289 states and 47160 transitions. [2021-07-09 17:53:48,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-07-09 17:53:48,223 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:53:48,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:48,259 INFO L225 Difference]: With dead ends: 13289 [2021-07-09 17:53:48,259 INFO L226 Difference]: Without dead ends: 13189 [2021-07-09 17:53:48,260 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1938 ImplicationChecksByTransitivity, 1751.5ms TimeCoverageRelationStatistics Valid=555, Invalid=6087, Unknown=0, NotChecked=0, Total=6642 [2021-07-09 17:53:48,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13189 states. [2021-07-09 17:53:48,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13189 to 8836. [2021-07-09 17:53:48,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8836 states, 8835 states have (on average 3.563554046406338) internal successors, (31484), 8835 states have internal predecessors, (31484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:48,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8836 states to 8836 states and 31484 transitions. [2021-07-09 17:53:48,492 INFO L78 Accepts]: Start accepts. Automaton has 8836 states and 31484 transitions. Word has length 47 [2021-07-09 17:53:48,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:48,492 INFO L482 AbstractCegarLoop]: Abstraction has 8836 states and 31484 transitions. [2021-07-09 17:53:48,492 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:48,492 INFO L276 IsEmpty]: Start isEmpty. Operand 8836 states and 31484 transitions. [2021-07-09 17:53:48,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:53:48,507 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:48,507 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:53:48,507 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2021-07-09 17:53:48,507 INFO L430 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:48,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:48,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1544083320, now seen corresponding path program 211 times [2021-07-09 17:53:48,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:48,507 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878052874] [2021-07-09 17:53:48,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:48,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:48,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:48,725 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:48,725 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878052874] [2021-07-09 17:53:48,725 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878052874] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:48,725 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:48,725 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:53:48,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174621] [2021-07-09 17:53:48,725 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:53:48,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:48,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:53:48,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:53:48,726 INFO L87 Difference]: Start difference. First operand 8836 states and 31484 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:51,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:51,612 INFO L93 Difference]: Finished difference Result 12138 states and 43268 transitions. [2021-07-09 17:53:51,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-07-09 17:53:51,613 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:53:51,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:51,638 INFO L225 Difference]: With dead ends: 12138 [2021-07-09 17:53:51,639 INFO L226 Difference]: Without dead ends: 12038 [2021-07-09 17:53:51,639 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1694 ImplicationChecksByTransitivity, 1548.7ms TimeCoverageRelationStatistics Valid=511, Invalid=5495, Unknown=0, NotChecked=0, Total=6006 [2021-07-09 17:53:51,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12038 states. [2021-07-09 17:53:51,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12038 to 8836. [2021-07-09 17:53:51,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8836 states, 8835 states have (on average 3.5632144878324845) internal successors, (31481), 8835 states have internal predecessors, (31481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:51,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8836 states to 8836 states and 31481 transitions. [2021-07-09 17:53:51,831 INFO L78 Accepts]: Start accepts. Automaton has 8836 states and 31481 transitions. Word has length 47 [2021-07-09 17:53:51,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:51,831 INFO L482 AbstractCegarLoop]: Abstraction has 8836 states and 31481 transitions. [2021-07-09 17:53:51,831 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:51,831 INFO L276 IsEmpty]: Start isEmpty. Operand 8836 states and 31481 transitions. [2021-07-09 17:53:51,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:53:51,847 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:51,847 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:53:51,847 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2021-07-09 17:53:51,847 INFO L430 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:51,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:51,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1826486106, now seen corresponding path program 212 times [2021-07-09 17:53:51,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:51,847 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642871354] [2021-07-09 17:53:51,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:51,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:52,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:52,067 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:52,067 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642871354] [2021-07-09 17:53:52,067 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642871354] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:52,067 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:52,067 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:53:52,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746201258] [2021-07-09 17:53:52,067 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:53:52,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:52,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:53:52,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:53:52,068 INFO L87 Difference]: Start difference. First operand 8836 states and 31481 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:55,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:55,317 INFO L93 Difference]: Finished difference Result 12247 states and 43654 transitions. [2021-07-09 17:53:55,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-07-09 17:53:55,317 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:53:55,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:55,348 INFO L225 Difference]: With dead ends: 12247 [2021-07-09 17:53:55,348 INFO L226 Difference]: Without dead ends: 12150 [2021-07-09 17:53:55,349 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2121 ImplicationChecksByTransitivity, 1827.3ms TimeCoverageRelationStatistics Valid=577, Invalid=6563, Unknown=0, NotChecked=0, Total=7140 [2021-07-09 17:53:55,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12150 states. [2021-07-09 17:53:55,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12150 to 8842. [2021-07-09 17:53:55,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8842 states, 8841 states have (on average 3.562492930663952) internal successors, (31496), 8841 states have internal predecessors, (31496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:55,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8842 states to 8842 states and 31496 transitions. [2021-07-09 17:53:55,526 INFO L78 Accepts]: Start accepts. Automaton has 8842 states and 31496 transitions. Word has length 47 [2021-07-09 17:53:55,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:55,527 INFO L482 AbstractCegarLoop]: Abstraction has 8842 states and 31496 transitions. [2021-07-09 17:53:55,527 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:55,527 INFO L276 IsEmpty]: Start isEmpty. Operand 8842 states and 31496 transitions. [2021-07-09 17:53:55,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:53:55,543 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:55,543 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:53:55,543 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2021-07-09 17:53:55,543 INFO L430 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:55,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:55,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1909374712, now seen corresponding path program 213 times [2021-07-09 17:53:55,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:55,543 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660966960] [2021-07-09 17:53:55,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:55,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:55,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:55,760 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:55,760 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660966960] [2021-07-09 17:53:55,760 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660966960] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:55,760 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:55,760 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:53:55,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135197556] [2021-07-09 17:53:55,760 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:53:55,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:55,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:53:55,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:53:55,761 INFO L87 Difference]: Start difference. First operand 8842 states and 31496 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:58,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:53:58,542 INFO L93 Difference]: Finished difference Result 11540 states and 41075 transitions. [2021-07-09 17:53:58,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-07-09 17:53:58,542 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:53:58,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:53:58,571 INFO L225 Difference]: With dead ends: 11540 [2021-07-09 17:53:58,571 INFO L226 Difference]: Without dead ends: 11434 [2021-07-09 17:53:58,571 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1474 ImplicationChecksByTransitivity, 1506.8ms TimeCoverageRelationStatistics Valid=476, Invalid=4926, Unknown=0, NotChecked=0, Total=5402 [2021-07-09 17:53:58,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11434 states. [2021-07-09 17:53:58,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11434 to 8827. [2021-07-09 17:53:58,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8827 states, 8826 states have (on average 3.5645819170632222) internal successors, (31461), 8826 states have internal predecessors, (31461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:58,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8827 states to 8827 states and 31461 transitions. [2021-07-09 17:53:58,766 INFO L78 Accepts]: Start accepts. Automaton has 8827 states and 31461 transitions. Word has length 47 [2021-07-09 17:53:58,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:53:58,766 INFO L482 AbstractCegarLoop]: Abstraction has 8827 states and 31461 transitions. [2021-07-09 17:53:58,766 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:53:58,766 INFO L276 IsEmpty]: Start isEmpty. Operand 8827 states and 31461 transitions. [2021-07-09 17:53:58,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:53:58,781 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:53:58,781 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:53:58,781 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2021-07-09 17:53:58,781 INFO L430 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:53:58,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:53:58,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1446911198, now seen corresponding path program 214 times [2021-07-09 17:53:58,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:53:58,782 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289101216] [2021-07-09 17:53:58,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:53:58,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:53:59,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:53:59,029 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:53:59,029 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289101216] [2021-07-09 17:53:59,030 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289101216] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:53:59,030 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:53:59,030 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:53:59,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496868399] [2021-07-09 17:53:59,030 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:53:59,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:53:59,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:53:59,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:53:59,030 INFO L87 Difference]: Start difference. First operand 8827 states and 31461 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:54:06,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:54:06,188 INFO L93 Difference]: Finished difference Result 21470 states and 75784 transitions. [2021-07-09 17:54:06,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2021-07-09 17:54:06,188 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:54:06,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:54:06,242 INFO L225 Difference]: With dead ends: 21470 [2021-07-09 17:54:06,242 INFO L226 Difference]: Without dead ends: 20925 [2021-07-09 17:54:06,243 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11174 ImplicationChecksByTransitivity, 4566.6ms TimeCoverageRelationStatistics Valid=1872, Invalid=26858, Unknown=0, NotChecked=0, Total=28730 [2021-07-09 17:54:06,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20925 states. [2021-07-09 17:54:06,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20925 to 9629. [2021-07-09 17:54:06,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9629 states, 9628 states have (on average 3.578728707935189) internal successors, (34456), 9628 states have internal predecessors, (34456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:54:06,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9629 states to 9629 states and 34456 transitions. [2021-07-09 17:54:06,519 INFO L78 Accepts]: Start accepts. Automaton has 9629 states and 34456 transitions. Word has length 47 [2021-07-09 17:54:06,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:54:06,519 INFO L482 AbstractCegarLoop]: Abstraction has 9629 states and 34456 transitions. [2021-07-09 17:54:06,519 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:54:06,519 INFO L276 IsEmpty]: Start isEmpty. Operand 9629 states and 34456 transitions. [2021-07-09 17:54:06,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:54:06,535 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:54:06,535 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:54:06,535 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2021-07-09 17:54:06,535 INFO L430 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:54:06,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:54:06,536 INFO L82 PathProgramCache]: Analyzing trace with hash 735434624, now seen corresponding path program 215 times [2021-07-09 17:54:06,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:54:06,536 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445245951] [2021-07-09 17:54:06,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:54:06,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:54:06,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:54:06,751 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:54:06,751 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445245951] [2021-07-09 17:54:06,751 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445245951] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:54:06,751 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:54:06,752 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:54:06,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754877086] [2021-07-09 17:54:06,752 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:54:06,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:54:06,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:54:06,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:54:06,752 INFO L87 Difference]: Start difference. First operand 9629 states and 34456 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:54:14,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:54:14,115 INFO L93 Difference]: Finished difference Result 21062 states and 74515 transitions. [2021-07-09 17:54:14,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2021-07-09 17:54:14,115 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:54:14,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:54:14,171 INFO L225 Difference]: With dead ends: 21062 [2021-07-09 17:54:14,171 INFO L226 Difference]: Without dead ends: 20574 [2021-07-09 17:54:14,172 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11784 ImplicationChecksByTransitivity, 4665.5ms TimeCoverageRelationStatistics Valid=1970, Invalid=28132, Unknown=0, NotChecked=0, Total=30102 [2021-07-09 17:54:14,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20574 states. [2021-07-09 17:54:14,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20574 to 10092. [2021-07-09 17:54:14,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10092 states, 10091 states have (on average 3.5850758101278366) internal successors, (36177), 10091 states have internal predecessors, (36177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:54:14,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10092 states to 10092 states and 36177 transitions. [2021-07-09 17:54:14,446 INFO L78 Accepts]: Start accepts. Automaton has 10092 states and 36177 transitions. Word has length 47 [2021-07-09 17:54:14,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:54:14,446 INFO L482 AbstractCegarLoop]: Abstraction has 10092 states and 36177 transitions. [2021-07-09 17:54:14,446 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:54:14,446 INFO L276 IsEmpty]: Start isEmpty. Operand 10092 states and 36177 transitions. [2021-07-09 17:54:14,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:54:14,464 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:54:14,464 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:54:14,464 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2021-07-09 17:54:14,464 INFO L430 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:54:14,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:54:14,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1280726080, now seen corresponding path program 216 times [2021-07-09 17:54:14,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:54:14,464 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474032244] [2021-07-09 17:54:14,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:54:14,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:54:14,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:54:14,689 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:54:14,689 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474032244] [2021-07-09 17:54:14,689 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474032244] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:54:14,689 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:54:14,689 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:54:14,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541142335] [2021-07-09 17:54:14,689 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:54:14,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:54:14,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:54:14,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:54:14,690 INFO L87 Difference]: Start difference. First operand 10092 states and 36177 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:54:21,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:54:21,447 INFO L93 Difference]: Finished difference Result 22066 states and 78190 transitions. [2021-07-09 17:54:21,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2021-07-09 17:54:21,447 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:54:21,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:54:21,504 INFO L225 Difference]: With dead ends: 22066 [2021-07-09 17:54:21,504 INFO L226 Difference]: Without dead ends: 21548 [2021-07-09 17:54:21,506 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10007 ImplicationChecksByTransitivity, 4394.6ms TimeCoverageRelationStatistics Valid=1698, Invalid=24384, Unknown=0, NotChecked=0, Total=26082 [2021-07-09 17:54:21,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21548 states. [2021-07-09 17:54:21,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21548 to 10307. [2021-07-09 17:54:21,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10307 states, 10306 states have (on average 3.5859693382495634) internal successors, (36957), 10306 states have internal predecessors, (36957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:54:21,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10307 states to 10307 states and 36957 transitions. [2021-07-09 17:54:21,803 INFO L78 Accepts]: Start accepts. Automaton has 10307 states and 36957 transitions. Word has length 47 [2021-07-09 17:54:21,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:54:21,803 INFO L482 AbstractCegarLoop]: Abstraction has 10307 states and 36957 transitions. [2021-07-09 17:54:21,804 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:54:21,804 INFO L276 IsEmpty]: Start isEmpty. Operand 10307 states and 36957 transitions. [2021-07-09 17:54:21,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:54:21,821 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:54:21,821 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:54:21,821 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2021-07-09 17:54:21,821 INFO L430 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:54:21,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:54:21,821 INFO L82 PathProgramCache]: Analyzing trace with hash -28463940, now seen corresponding path program 217 times [2021-07-09 17:54:21,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:54:21,822 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645096402] [2021-07-09 17:54:21,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:54:21,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:54:22,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:54:22,089 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:54:22,089 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645096402] [2021-07-09 17:54:22,090 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645096402] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:54:22,090 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:54:22,090 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:54:22,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243283972] [2021-07-09 17:54:22,090 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:54:22,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:54:22,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:54:22,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:54:22,090 INFO L87 Difference]: Start difference. First operand 10307 states and 36957 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:54:28,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:54:28,131 INFO L93 Difference]: Finished difference Result 21218 states and 75598 transitions. [2021-07-09 17:54:28,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2021-07-09 17:54:28,131 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:54:28,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:54:28,240 INFO L225 Difference]: With dead ends: 21218 [2021-07-09 17:54:28,240 INFO L226 Difference]: Without dead ends: 20996 [2021-07-09 17:54:28,241 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7869 ImplicationChecksByTransitivity, 3972.0ms TimeCoverageRelationStatistics Valid=1464, Invalid=19706, Unknown=0, NotChecked=0, Total=21170 [2021-07-09 17:54:28,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20996 states. [2021-07-09 17:54:28,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20996 to 10857. [2021-07-09 17:54:28,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10857 states, 10856 states have (on average 3.5916543846720708) internal successors, (38991), 10856 states have internal predecessors, (38991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:54:28,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10857 states to 10857 states and 38991 transitions. [2021-07-09 17:54:28,509 INFO L78 Accepts]: Start accepts. Automaton has 10857 states and 38991 transitions. Word has length 47 [2021-07-09 17:54:28,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:54:28,509 INFO L482 AbstractCegarLoop]: Abstraction has 10857 states and 38991 transitions. [2021-07-09 17:54:28,509 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:54:28,509 INFO L276 IsEmpty]: Start isEmpty. Operand 10857 states and 38991 transitions. [2021-07-09 17:54:28,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:54:28,527 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:54:28,528 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:54:28,528 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2021-07-09 17:54:28,528 INFO L430 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:54:28,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:54:28,528 INFO L82 PathProgramCache]: Analyzing trace with hash -94526498, now seen corresponding path program 218 times [2021-07-09 17:54:28,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:54:28,528 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122365879] [2021-07-09 17:54:28,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:54:28,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:54:28,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:54:28,747 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:54:28,747 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122365879] [2021-07-09 17:54:28,747 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122365879] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:54:28,747 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:54:28,747 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:54:28,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243490859] [2021-07-09 17:54:28,748 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:54:28,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:54:28,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:54:28,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:54:28,748 INFO L87 Difference]: Start difference. First operand 10857 states and 38991 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:54:35,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:54:35,096 INFO L93 Difference]: Finished difference Result 22737 states and 81208 transitions. [2021-07-09 17:54:35,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2021-07-09 17:54:35,097 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:54:35,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:54:35,155 INFO L225 Difference]: With dead ends: 22737 [2021-07-09 17:54:35,155 INFO L226 Difference]: Without dead ends: 22467 [2021-07-09 17:54:35,157 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9190 ImplicationChecksByTransitivity, 3991.9ms TimeCoverageRelationStatistics Valid=1568, Invalid=22612, Unknown=0, NotChecked=0, Total=24180 [2021-07-09 17:54:35,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22467 states. [2021-07-09 17:54:35,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22467 to 10976. [2021-07-09 17:54:35,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10976 states, 10975 states have (on average 3.5905239179954442) internal successors, (39406), 10975 states have internal predecessors, (39406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:54:35,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10976 states to 10976 states and 39406 transitions. [2021-07-09 17:54:35,477 INFO L78 Accepts]: Start accepts. Automaton has 10976 states and 39406 transitions. Word has length 47 [2021-07-09 17:54:35,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:54:35,478 INFO L482 AbstractCegarLoop]: Abstraction has 10976 states and 39406 transitions. [2021-07-09 17:54:35,478 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:54:35,478 INFO L276 IsEmpty]: Start isEmpty. Operand 10976 states and 39406 transitions. [2021-07-09 17:54:35,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:54:35,497 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:54:35,497 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:54:35,497 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2021-07-09 17:54:35,497 INFO L430 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:54:35,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:54:35,497 INFO L82 PathProgramCache]: Analyzing trace with hash -239209186, now seen corresponding path program 219 times [2021-07-09 17:54:35,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:54:35,497 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76915254] [2021-07-09 17:54:35,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:54:35,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:54:35,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:54:35,725 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:54:35,725 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76915254] [2021-07-09 17:54:35,725 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76915254] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:54:35,725 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:54:35,725 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:54:35,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031195719] [2021-07-09 17:54:35,726 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:54:35,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:54:35,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:54:35,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:54:35,726 INFO L87 Difference]: Start difference. First operand 10976 states and 39406 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:54:43,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:54:43,387 INFO L93 Difference]: Finished difference Result 22963 states and 81306 transitions. [2021-07-09 17:54:43,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2021-07-09 17:54:43,387 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:54:43,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:54:43,448 INFO L225 Difference]: With dead ends: 22963 [2021-07-09 17:54:43,449 INFO L226 Difference]: Without dead ends: 22717 [2021-07-09 17:54:43,450 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12973 ImplicationChecksByTransitivity, 4877.6ms TimeCoverageRelationStatistics Valid=1984, Invalid=30958, Unknown=0, NotChecked=0, Total=32942 [2021-07-09 17:54:43,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22717 states. [2021-07-09 17:54:43,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22717 to 11160. [2021-07-09 17:54:43,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11160 states, 11159 states have (on average 3.593780804731607) internal successors, (40103), 11159 states have internal predecessors, (40103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:54:43,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11160 states to 11160 states and 40103 transitions. [2021-07-09 17:54:43,768 INFO L78 Accepts]: Start accepts. Automaton has 11160 states and 40103 transitions. Word has length 47 [2021-07-09 17:54:43,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:54:43,768 INFO L482 AbstractCegarLoop]: Abstraction has 11160 states and 40103 transitions. [2021-07-09 17:54:43,768 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:54:43,768 INFO L276 IsEmpty]: Start isEmpty. Operand 11160 states and 40103 transitions. [2021-07-09 17:54:43,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:54:43,788 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:54:43,788 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:54:43,788 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2021-07-09 17:54:43,788 INFO L430 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:54:43,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:54:43,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1792754108, now seen corresponding path program 220 times [2021-07-09 17:54:43,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:54:43,788 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204509032] [2021-07-09 17:54:43,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:54:43,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:54:44,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:54:44,011 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:54:44,011 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204509032] [2021-07-09 17:54:44,011 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204509032] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:54:44,011 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:54:44,011 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:54:44,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869304462] [2021-07-09 17:54:44,011 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:54:44,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:54:44,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:54:44,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:54:44,012 INFO L87 Difference]: Start difference. First operand 11160 states and 40103 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:54:51,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:54:51,515 INFO L93 Difference]: Finished difference Result 22773 states and 81052 transitions. [2021-07-09 17:54:51,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2021-07-09 17:54:51,515 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:54:51,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:54:51,576 INFO L225 Difference]: With dead ends: 22773 [2021-07-09 17:54:51,576 INFO L226 Difference]: Without dead ends: 22676 [2021-07-09 17:54:51,577 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11392 ImplicationChecksByTransitivity, 4787.0ms TimeCoverageRelationStatistics Valid=1905, Invalid=27507, Unknown=0, NotChecked=0, Total=29412 [2021-07-09 17:54:51,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22676 states. [2021-07-09 17:54:51,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22676 to 11209. [2021-07-09 17:54:51,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11209 states, 11208 states have (on average 3.59243397573162) internal successors, (40264), 11208 states have internal predecessors, (40264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:54:51,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11209 states to 11209 states and 40264 transitions. [2021-07-09 17:54:51,907 INFO L78 Accepts]: Start accepts. Automaton has 11209 states and 40264 transitions. Word has length 47 [2021-07-09 17:54:51,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:54:51,907 INFO L482 AbstractCegarLoop]: Abstraction has 11209 states and 40264 transitions. [2021-07-09 17:54:51,907 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:54:51,907 INFO L276 IsEmpty]: Start isEmpty. Operand 11209 states and 40264 transitions. [2021-07-09 17:54:51,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:54:51,926 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:54:51,927 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:54:51,927 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2021-07-09 17:54:51,927 INFO L430 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:54:51,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:54:51,927 INFO L82 PathProgramCache]: Analyzing trace with hash 67333598, now seen corresponding path program 221 times [2021-07-09 17:54:51,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:54:51,927 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890964170] [2021-07-09 17:54:51,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:54:51,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:54:52,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:54:52,144 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:54:52,144 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890964170] [2021-07-09 17:54:52,144 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890964170] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:54:52,144 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:54:52,144 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:54:52,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173472835] [2021-07-09 17:54:52,144 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:54:52,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:54:52,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:54:52,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:54:52,145 INFO L87 Difference]: Start difference. First operand 11209 states and 40264 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:54:59,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:54:59,278 INFO L93 Difference]: Finished difference Result 23042 states and 82015 transitions. [2021-07-09 17:54:59,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2021-07-09 17:54:59,278 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:54:59,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:54:59,398 INFO L225 Difference]: With dead ends: 23042 [2021-07-09 17:54:59,398 INFO L226 Difference]: Without dead ends: 22757 [2021-07-09 17:54:59,399 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11097 ImplicationChecksByTransitivity, 4401.4ms TimeCoverageRelationStatistics Valid=1794, Invalid=26936, Unknown=0, NotChecked=0, Total=28730 [2021-07-09 17:54:59,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22757 states. [2021-07-09 17:54:59,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22757 to 11188. [2021-07-09 17:54:59,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11188 states, 11187 states have (on average 3.5952444802002326) internal successors, (40220), 11187 states have internal predecessors, (40220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:54:59,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11188 states to 11188 states and 40220 transitions. [2021-07-09 17:54:59,692 INFO L78 Accepts]: Start accepts. Automaton has 11188 states and 40220 transitions. Word has length 47 [2021-07-09 17:54:59,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:54:59,692 INFO L482 AbstractCegarLoop]: Abstraction has 11188 states and 40220 transitions. [2021-07-09 17:54:59,693 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:54:59,693 INFO L276 IsEmpty]: Start isEmpty. Operand 11188 states and 40220 transitions. [2021-07-09 17:54:59,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:54:59,711 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:54:59,711 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:54:59,711 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2021-07-09 17:54:59,711 INFO L430 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:54:59,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:54:59,711 INFO L82 PathProgramCache]: Analyzing trace with hash -941021158, now seen corresponding path program 222 times [2021-07-09 17:54:59,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:54:59,711 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382113060] [2021-07-09 17:54:59,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:54:59,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:54:59,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:54:59,913 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:54:59,913 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382113060] [2021-07-09 17:54:59,913 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382113060] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:54:59,913 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:54:59,913 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:54:59,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276632372] [2021-07-09 17:54:59,913 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:54:59,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:54:59,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:54:59,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:54:59,914 INFO L87 Difference]: Start difference. First operand 11188 states and 40220 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) [2021-07-09 17:55:05,206 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 25 [2021-07-09 17:55:05,432 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2021-07-09 17:55:05,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:55:05,526 INFO L93 Difference]: Finished difference Result 20086 states and 72142 transitions. [2021-07-09 17:55:05,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2021-07-09 17:55:05,526 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 [2021-07-09 17:55:05,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:55:05,597 INFO L225 Difference]: With dead ends: 20086 [2021-07-09 17:55:05,597 INFO L226 Difference]: Without dead ends: 19748 [2021-07-09 17:55:05,598 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5482 ImplicationChecksByTransitivity, 3334.6ms TimeCoverageRelationStatistics Valid=1105, Invalid=14147, Unknown=0, NotChecked=0, Total=15252 [2021-07-09 17:55:05,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19748 states. [2021-07-09 17:55:05,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19748 to 12554. [2021-07-09 17:55:05,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12554 states, 12553 states have (on average 3.6132398629809606) internal successors, (45357), 12553 states have internal predecessors, (45357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:55:05,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12554 states to 12554 states and 45357 transitions. [2021-07-09 17:55:05,997 INFO L78 Accepts]: Start accepts. Automaton has 12554 states and 45357 transitions. Word has length 47 [2021-07-09 17:55:05,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:55:05,997 INFO L482 AbstractCegarLoop]: Abstraction has 12554 states and 45357 transitions. [2021-07-09 17:55:05,997 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) [2021-07-09 17:55:05,997 INFO L276 IsEmpty]: Start isEmpty. Operand 12554 states and 45357 transitions. [2021-07-09 17:55:06,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:55:06,023 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:55:06,023 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:55:06,023 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2021-07-09 17:55:06,023 INFO L430 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:55:06,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:55:06,023 INFO L82 PathProgramCache]: Analyzing trace with hash 693572570, now seen corresponding path program 223 times [2021-07-09 17:55:06,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:55:06,023 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485818165] [2021-07-09 17:55:06,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:55:06,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:55:06,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:55:06,297 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:55:06,297 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485818165] [2021-07-09 17:55:06,297 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485818165] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:55:06,297 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:55:06,297 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:55:06,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370691818] [2021-07-09 17:55:06,297 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:55:06,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:55:06,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:55:06,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:55:06,298 INFO L87 Difference]: Start difference. First operand 12554 states and 45357 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:55:13,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:55:13,406 INFO L93 Difference]: Finished difference Result 22418 states and 80247 transitions. [2021-07-09 17:55:13,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2021-07-09 17:55:13,407 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:55:13,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:55:13,468 INFO L225 Difference]: With dead ends: 22418 [2021-07-09 17:55:13,468 INFO L226 Difference]: Without dead ends: 21923 [2021-07-09 17:55:13,470 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10790 ImplicationChecksByTransitivity, 4637.1ms TimeCoverageRelationStatistics Valid=1776, Invalid=25946, Unknown=0, NotChecked=0, Total=27722 [2021-07-09 17:55:13,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21923 states. [2021-07-09 17:55:13,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21923 to 12811. [2021-07-09 17:55:13,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12811 states, 12810 states have (on average 3.6081967213114754) internal successors, (46221), 12810 states have internal predecessors, (46221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:55:13,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12811 states to 12811 states and 46221 transitions. [2021-07-09 17:55:13,840 INFO L78 Accepts]: Start accepts. Automaton has 12811 states and 46221 transitions. Word has length 47 [2021-07-09 17:55:13,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:55:13,840 INFO L482 AbstractCegarLoop]: Abstraction has 12811 states and 46221 transitions. [2021-07-09 17:55:13,841 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:55:13,841 INFO L276 IsEmpty]: Start isEmpty. Operand 12811 states and 46221 transitions. [2021-07-09 17:55:13,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:55:13,865 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:55:13,865 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:55:13,865 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2021-07-09 17:55:13,865 INFO L430 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:55:13,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:55:13,866 INFO L82 PathProgramCache]: Analyzing trace with hash -2007777412, now seen corresponding path program 224 times [2021-07-09 17:55:13,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:55:13,866 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504655943] [2021-07-09 17:55:13,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:55:13,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:55:14,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:55:14,150 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:55:14,150 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504655943] [2021-07-09 17:55:14,150 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504655943] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:55:14,150 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:55:14,150 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-09 17:55:14,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796900647] [2021-07-09 17:55:14,150 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:55:14,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:55:14,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:55:14,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:55:14,151 INFO L87 Difference]: Start difference. First operand 12811 states and 46221 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) [2021-07-09 17:55:20,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:55:20,054 INFO L93 Difference]: Finished difference Result 20084 states and 71937 transitions. [2021-07-09 17:55:20,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2021-07-09 17:55:20,054 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 [2021-07-09 17:55:20,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:55:20,106 INFO L225 Difference]: With dead ends: 20084 [2021-07-09 17:55:20,106 INFO L226 Difference]: Without dead ends: 19746 [2021-07-09 17:55:20,108 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6674 ImplicationChecksByTransitivity, 3447.8ms TimeCoverageRelationStatistics Valid=1257, Invalid=16833, Unknown=0, NotChecked=0, Total=18090 [2021-07-09 17:55:20,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19746 states. [2021-07-09 17:55:20,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19746 to 12826. [2021-07-09 17:55:20,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12826 states, 12825 states have (on average 3.608421052631579) internal successors, (46278), 12825 states have internal predecessors, (46278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:55:20,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12826 states to 12826 states and 46278 transitions. [2021-07-09 17:55:20,496 INFO L78 Accepts]: Start accepts. Automaton has 12826 states and 46278 transitions. Word has length 47 [2021-07-09 17:55:20,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:55:20,497 INFO L482 AbstractCegarLoop]: Abstraction has 12826 states and 46278 transitions. [2021-07-09 17:55:20,497 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) [2021-07-09 17:55:20,497 INFO L276 IsEmpty]: Start isEmpty. Operand 12826 states and 46278 transitions. [2021-07-09 17:55:20,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:55:20,522 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:55:20,523 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:55:20,523 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2021-07-09 17:55:20,523 INFO L430 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:55:20,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:55:20,523 INFO L82 PathProgramCache]: Analyzing trace with hash -639347750, now seen corresponding path program 225 times [2021-07-09 17:55:20,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:55:20,523 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981115093] [2021-07-09 17:55:20,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:55:20,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:55:20,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:55:20,764 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:55:20,764 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981115093] [2021-07-09 17:55:20,764 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981115093] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:55:20,764 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:55:20,764 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:55:20,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34622066] [2021-07-09 17:55:20,765 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:55:20,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:55:20,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:55:20,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:55:20,765 INFO L87 Difference]: Start difference. First operand 12826 states and 46278 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:55:28,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:55:28,848 INFO L93 Difference]: Finished difference Result 23699 states and 84833 transitions. [2021-07-09 17:55:28,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2021-07-09 17:55:28,849 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:55:28,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:55:28,911 INFO L225 Difference]: With dead ends: 23699 [2021-07-09 17:55:28,911 INFO L226 Difference]: Without dead ends: 23018 [2021-07-09 17:55:28,912 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11818 ImplicationChecksByTransitivity, 4673.5ms TimeCoverageRelationStatistics Valid=1872, Invalid=28230, Unknown=0, NotChecked=0, Total=30102 [2021-07-09 17:55:28,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23018 states. [2021-07-09 17:55:29,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23018 to 13332. [2021-07-09 17:55:29,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13332 states, 13331 states have (on average 3.6109819218363213) internal successors, (48138), 13331 states have internal predecessors, (48138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:55:29,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13332 states to 13332 states and 48138 transitions. [2021-07-09 17:55:29,282 INFO L78 Accepts]: Start accepts. Automaton has 13332 states and 48138 transitions. Word has length 47 [2021-07-09 17:55:29,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:55:29,282 INFO L482 AbstractCegarLoop]: Abstraction has 13332 states and 48138 transitions. [2021-07-09 17:55:29,282 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:55:29,282 INFO L276 IsEmpty]: Start isEmpty. Operand 13332 states and 48138 transitions. [2021-07-09 17:55:29,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:55:29,306 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:55:29,306 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:55:29,307 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2021-07-09 17:55:29,307 INFO L430 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:55:29,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:55:29,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1143056098, now seen corresponding path program 226 times [2021-07-09 17:55:29,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:55:29,307 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960547571] [2021-07-09 17:55:29,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:55:29,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:55:29,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:55:29,529 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:55:29,529 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960547571] [2021-07-09 17:55:29,529 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960547571] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:55:29,529 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:55:29,529 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:55:29,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014483291] [2021-07-09 17:55:29,529 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:55:29,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:55:29,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:55:29,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:55:29,530 INFO L87 Difference]: Start difference. First operand 13332 states and 48138 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:55:36,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:55:36,735 INFO L93 Difference]: Finished difference Result 24381 states and 87583 transitions. [2021-07-09 17:55:36,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2021-07-09 17:55:36,735 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:55:36,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:55:36,800 INFO L225 Difference]: With dead ends: 24381 [2021-07-09 17:55:36,800 INFO L226 Difference]: Without dead ends: 23914 [2021-07-09 17:55:36,801 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10081 ImplicationChecksByTransitivity, 4574.2ms TimeCoverageRelationStatistics Valid=1693, Invalid=24389, Unknown=0, NotChecked=0, Total=26082 [2021-07-09 17:55:36,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23914 states. [2021-07-09 17:55:37,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23914 to 13748. [2021-07-09 17:55:37,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13748 states, 13747 states have (on average 3.610314977813341) internal successors, (49631), 13747 states have internal predecessors, (49631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:55:37,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13748 states to 13748 states and 49631 transitions. [2021-07-09 17:55:37,182 INFO L78 Accepts]: Start accepts. Automaton has 13748 states and 49631 transitions. Word has length 47 [2021-07-09 17:55:37,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:55:37,182 INFO L482 AbstractCegarLoop]: Abstraction has 13748 states and 49631 transitions. [2021-07-09 17:55:37,182 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:55:37,182 INFO L276 IsEmpty]: Start isEmpty. Operand 13748 states and 49631 transitions. [2021-07-09 17:55:37,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:55:37,208 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:55:37,208 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:55:37,208 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2021-07-09 17:55:37,208 INFO L430 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:55:37,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:55:37,208 INFO L82 PathProgramCache]: Analyzing trace with hash 535182008, now seen corresponding path program 227 times [2021-07-09 17:55:37,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:55:37,208 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994919086] [2021-07-09 17:55:37,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:55:37,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:55:37,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:55:37,494 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:55:37,494 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994919086] [2021-07-09 17:55:37,494 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994919086] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:55:37,494 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:55:37,494 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:55:37,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353960771] [2021-07-09 17:55:37,494 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:55:37,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:55:37,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:55:37,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:55:37,495 INFO L87 Difference]: Start difference. First operand 13748 states and 49631 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:55:38,306 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2021-07-09 17:55:43,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:55:43,455 INFO L93 Difference]: Finished difference Result 23835 states and 85249 transitions. [2021-07-09 17:55:43,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2021-07-09 17:55:43,455 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:55:43,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:55:43,514 INFO L225 Difference]: With dead ends: 23835 [2021-07-09 17:55:43,514 INFO L226 Difference]: Without dead ends: 23310 [2021-07-09 17:55:43,515 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5876 ImplicationChecksByTransitivity, 3712.1ms TimeCoverageRelationStatistics Valid=1211, Invalid=15301, Unknown=0, NotChecked=0, Total=16512 [2021-07-09 17:55:43,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23310 states. [2021-07-09 17:55:43,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23310 to 14261. [2021-07-09 17:55:43,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14261 states, 14260 states have (on average 3.614586255259467) internal successors, (51544), 14260 states have internal predecessors, (51544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:55:43,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14261 states to 14261 states and 51544 transitions. [2021-07-09 17:55:43,888 INFO L78 Accepts]: Start accepts. Automaton has 14261 states and 51544 transitions. Word has length 47 [2021-07-09 17:55:43,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:55:43,888 INFO L482 AbstractCegarLoop]: Abstraction has 14261 states and 51544 transitions. [2021-07-09 17:55:43,888 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:55:43,888 INFO L276 IsEmpty]: Start isEmpty. Operand 14261 states and 51544 transitions. [2021-07-09 17:55:43,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:55:43,916 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:55:43,916 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:55:43,916 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2021-07-09 17:55:43,916 INFO L430 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:55:43,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:55:43,916 INFO L82 PathProgramCache]: Analyzing trace with hash 469119450, now seen corresponding path program 228 times [2021-07-09 17:55:43,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:55:43,917 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888041422] [2021-07-09 17:55:43,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:55:43,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:55:44,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:55:44,133 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:55:44,133 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888041422] [2021-07-09 17:55:44,133 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888041422] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:55:44,133 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:55:44,133 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:55:44,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612921515] [2021-07-09 17:55:44,133 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:55:44,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:55:44,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:55:44,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:55:44,134 INFO L87 Difference]: Start difference. First operand 14261 states and 51544 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:55:50,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:55:50,470 INFO L93 Difference]: Finished difference Result 24200 states and 86642 transitions. [2021-07-09 17:55:50,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2021-07-09 17:55:50,470 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:55:50,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:55:50,531 INFO L225 Difference]: With dead ends: 24200 [2021-07-09 17:55:50,531 INFO L226 Difference]: Without dead ends: 23649 [2021-07-09 17:55:50,532 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6934 ImplicationChecksByTransitivity, 3710.7ms TimeCoverageRelationStatistics Valid=1270, Invalid=17636, Unknown=0, NotChecked=0, Total=18906 [2021-07-09 17:55:50,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23649 states. [2021-07-09 17:55:50,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23649 to 14486. [2021-07-09 17:55:50,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14486 states, 14485 states have (on average 3.609941318605454) internal successors, (52290), 14485 states have internal predecessors, (52290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:55:50,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14486 states to 14486 states and 52290 transitions. [2021-07-09 17:55:50,916 INFO L78 Accepts]: Start accepts. Automaton has 14486 states and 52290 transitions. Word has length 47 [2021-07-09 17:55:50,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:55:50,916 INFO L482 AbstractCegarLoop]: Abstraction has 14486 states and 52290 transitions. [2021-07-09 17:55:50,916 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:55:50,916 INFO L276 IsEmpty]: Start isEmpty. Operand 14486 states and 52290 transitions. [2021-07-09 17:55:50,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:55:50,943 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:55:50,944 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:55:50,944 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2021-07-09 17:55:50,944 INFO L430 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:55:50,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:55:50,944 INFO L82 PathProgramCache]: Analyzing trace with hash -788534788, now seen corresponding path program 229 times [2021-07-09 17:55:50,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:55:50,944 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602655999] [2021-07-09 17:55:50,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:55:50,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:55:51,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:55:51,161 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:55:51,161 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602655999] [2021-07-09 17:55:51,161 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602655999] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:55:51,161 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:55:51,161 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:55:51,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667415905] [2021-07-09 17:55:51,161 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:55:51,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:55:51,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:55:51,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:55:51,161 INFO L87 Difference]: Start difference. First operand 14486 states and 52290 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:55:54,769 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 28 [2021-07-09 17:55:59,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:55:59,198 INFO L93 Difference]: Finished difference Result 26456 states and 94786 transitions. [2021-07-09 17:55:59,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2021-07-09 17:55:59,198 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:55:59,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:55:59,266 INFO L225 Difference]: With dead ends: 26456 [2021-07-09 17:55:59,266 INFO L226 Difference]: Without dead ends: 25973 [2021-07-09 17:55:59,268 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12688 ImplicationChecksByTransitivity, 4766.4ms TimeCoverageRelationStatistics Valid=1977, Invalid=30243, Unknown=0, NotChecked=0, Total=32220 [2021-07-09 17:55:59,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25973 states. [2021-07-09 17:55:59,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25973 to 14845. [2021-07-09 17:55:59,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14845 states, 14844 states have (on average 3.613648612233899) internal successors, (53641), 14844 states have internal predecessors, (53641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:55:59,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14845 states to 14845 states and 53641 transitions. [2021-07-09 17:55:59,752 INFO L78 Accepts]: Start accepts. Automaton has 14845 states and 53641 transitions. Word has length 47 [2021-07-09 17:55:59,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:55:59,753 INFO L482 AbstractCegarLoop]: Abstraction has 14845 states and 53641 transitions. [2021-07-09 17:55:59,753 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:55:59,753 INFO L276 IsEmpty]: Start isEmpty. Operand 14845 states and 53641 transitions. [2021-07-09 17:55:59,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:55:59,780 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:55:59,780 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:55:59,780 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2021-07-09 17:55:59,780 INFO L430 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:55:59,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:55:59,780 INFO L82 PathProgramCache]: Analyzing trace with hash -519871458, now seen corresponding path program 230 times [2021-07-09 17:55:59,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:55:59,780 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858156185] [2021-07-09 17:55:59,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:55:59,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:55:59,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:55:59,994 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:55:59,994 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858156185] [2021-07-09 17:55:59,994 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858156185] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:55:59,994 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:55:59,994 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:55:59,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946929137] [2021-07-09 17:55:59,994 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:55:59,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:55:59,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:55:59,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:55:59,995 INFO L87 Difference]: Start difference. First operand 14845 states and 53641 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:56:09,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:56:09,104 INFO L93 Difference]: Finished difference Result 30319 states and 108230 transitions. [2021-07-09 17:56:09,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2021-07-09 17:56:09,105 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:56:09,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:56:09,187 INFO L225 Difference]: With dead ends: 30319 [2021-07-09 17:56:09,187 INFO L226 Difference]: Without dead ends: 29715 [2021-07-09 17:56:09,190 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16816 ImplicationChecksByTransitivity, 5613.7ms TimeCoverageRelationStatistics Valid=2284, Invalid=39128, Unknown=0, NotChecked=0, Total=41412 [2021-07-09 17:56:09,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29715 states. [2021-07-09 17:56:09,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29715 to 14990. [2021-07-09 17:56:09,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14990 states, 14989 states have (on average 3.6146507438788444) internal successors, (54180), 14989 states have internal predecessors, (54180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:56:09,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14990 states to 14990 states and 54180 transitions. [2021-07-09 17:56:09,665 INFO L78 Accepts]: Start accepts. Automaton has 14990 states and 54180 transitions. Word has length 47 [2021-07-09 17:56:09,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:56:09,665 INFO L482 AbstractCegarLoop]: Abstraction has 14990 states and 54180 transitions. [2021-07-09 17:56:09,665 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:56:09,665 INFO L276 IsEmpty]: Start isEmpty. Operand 14990 states and 54180 transitions. [2021-07-09 17:56:09,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:56:09,694 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:56:09,694 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:56:09,694 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2021-07-09 17:56:09,694 INFO L430 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:56:09,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:56:09,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1051549978, now seen corresponding path program 231 times [2021-07-09 17:56:09,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:56:09,694 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613154355] [2021-07-09 17:56:09,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:56:09,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:56:10,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:56:10,007 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:56:10,007 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613154355] [2021-07-09 17:56:10,007 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613154355] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:56:10,007 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:56:10,007 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:56:10,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688145007] [2021-07-09 17:56:10,008 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:56:10,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:56:10,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:56:10,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:56:10,008 INFO L87 Difference]: Start difference. First operand 14990 states and 54180 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:56:18,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:56:18,887 INFO L93 Difference]: Finished difference Result 31990 states and 115051 transitions. [2021-07-09 17:56:18,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2021-07-09 17:56:18,887 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:56:18,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:56:18,972 INFO L225 Difference]: With dead ends: 31990 [2021-07-09 17:56:18,972 INFO L226 Difference]: Without dead ends: 31267 [2021-07-09 17:56:18,973 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14894 ImplicationChecksByTransitivity, 5373.9ms TimeCoverageRelationStatistics Valid=2194, Invalid=34862, Unknown=0, NotChecked=0, Total=37056 [2021-07-09 17:56:19,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31267 states. [2021-07-09 17:56:19,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31267 to 15966. [2021-07-09 17:56:19,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15966 states, 15965 states have (on average 3.623676792984654) internal successors, (57852), 15965 states have internal predecessors, (57852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:56:19,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15966 states to 15966 states and 57852 transitions. [2021-07-09 17:56:19,448 INFO L78 Accepts]: Start accepts. Automaton has 15966 states and 57852 transitions. Word has length 47 [2021-07-09 17:56:19,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:56:19,449 INFO L482 AbstractCegarLoop]: Abstraction has 15966 states and 57852 transitions. [2021-07-09 17:56:19,449 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:56:19,449 INFO L276 IsEmpty]: Start isEmpty. Operand 15966 states and 57852 transitions. [2021-07-09 17:56:19,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:56:19,476 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:56:19,476 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:56:19,477 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2021-07-09 17:56:19,477 INFO L430 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:56:19,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:56:19,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1350441656, now seen corresponding path program 232 times [2021-07-09 17:56:19,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:56:19,477 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3217879] [2021-07-09 17:56:19,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:56:19,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:56:19,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:56:19,692 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:56:19,692 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3217879] [2021-07-09 17:56:19,692 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3217879] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:56:19,692 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:56:19,692 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:56:19,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124440842] [2021-07-09 17:56:19,692 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:56:19,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:56:19,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:56:19,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:56:19,693 INFO L87 Difference]: Start difference. First operand 15966 states and 57852 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:56:28,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:56:28,072 INFO L93 Difference]: Finished difference Result 32336 states and 115883 transitions. [2021-07-09 17:56:28,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2021-07-09 17:56:28,073 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:56:28,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:56:28,155 INFO L225 Difference]: With dead ends: 32336 [2021-07-09 17:56:28,155 INFO L226 Difference]: Without dead ends: 31756 [2021-07-09 17:56:28,157 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13831 ImplicationChecksByTransitivity, 5262.6ms TimeCoverageRelationStatistics Valid=2096, Invalid=32686, Unknown=0, NotChecked=0, Total=34782 [2021-07-09 17:56:28,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31756 states. [2021-07-09 17:56:28,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31756 to 16713. [2021-07-09 17:56:28,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16713 states, 16712 states have (on average 3.62918860698899) internal successors, (60651), 16712 states have internal predecessors, (60651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:56:28,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16713 states to 16713 states and 60651 transitions. [2021-07-09 17:56:28,651 INFO L78 Accepts]: Start accepts. Automaton has 16713 states and 60651 transitions. Word has length 47 [2021-07-09 17:56:28,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:56:28,651 INFO L482 AbstractCegarLoop]: Abstraction has 16713 states and 60651 transitions. [2021-07-09 17:56:28,651 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:56:28,651 INFO L276 IsEmpty]: Start isEmpty. Operand 16713 states and 60651 transitions. [2021-07-09 17:56:28,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:56:28,681 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:56:28,682 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:56:28,682 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2021-07-09 17:56:28,682 INFO L430 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:56:28,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:56:28,682 INFO L82 PathProgramCache]: Analyzing trace with hash -374978854, now seen corresponding path program 233 times [2021-07-09 17:56:28,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:56:28,682 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454335027] [2021-07-09 17:56:28,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:56:28,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:56:28,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:56:28,993 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:56:28,993 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454335027] [2021-07-09 17:56:28,993 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454335027] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:56:28,993 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:56:28,993 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:56:28,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198845099] [2021-07-09 17:56:28,993 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:56:28,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:56:28,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:56:28,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:56:28,994 INFO L87 Difference]: Start difference. First operand 16713 states and 60651 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:56:36,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:56:36,554 INFO L93 Difference]: Finished difference Result 31575 states and 113377 transitions. [2021-07-09 17:56:36,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2021-07-09 17:56:36,554 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:56:36,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:56:36,636 INFO L225 Difference]: With dead ends: 31575 [2021-07-09 17:56:36,636 INFO L226 Difference]: Without dead ends: 30915 [2021-07-09 17:56:36,639 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11354 ImplicationChecksByTransitivity, 4497.2ms TimeCoverageRelationStatistics Valid=1745, Invalid=27325, Unknown=0, NotChecked=0, Total=29070 [2021-07-09 17:56:36,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30915 states. [2021-07-09 17:56:37,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30915 to 16871. [2021-07-09 17:56:37,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16871 states, 16870 states have (on average 3.6272080616478957) internal successors, (61191), 16870 states have internal predecessors, (61191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:56:37,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16871 states to 16871 states and 61191 transitions. [2021-07-09 17:56:37,189 INFO L78 Accepts]: Start accepts. Automaton has 16871 states and 61191 transitions. Word has length 47 [2021-07-09 17:56:37,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:56:37,189 INFO L482 AbstractCegarLoop]: Abstraction has 16871 states and 61191 transitions. [2021-07-09 17:56:37,189 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:56:37,189 INFO L276 IsEmpty]: Start isEmpty. Operand 16871 states and 61191 transitions. [2021-07-09 17:56:37,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:56:37,220 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:56:37,220 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:56:37,220 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2021-07-09 17:56:37,220 INFO L430 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:56:37,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:56:37,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1869500160, now seen corresponding path program 234 times [2021-07-09 17:56:37,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:56:37,221 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546336797] [2021-07-09 17:56:37,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:56:37,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:56:37,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:56:37,436 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:56:37,436 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546336797] [2021-07-09 17:56:37,436 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546336797] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:56:37,436 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:56:37,436 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:56:37,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826859993] [2021-07-09 17:56:37,436 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:56:37,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:56:37,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:56:37,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:56:37,437 INFO L87 Difference]: Start difference. First operand 16871 states and 61191 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:56:45,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:56:45,634 INFO L93 Difference]: Finished difference Result 33481 states and 119699 transitions. [2021-07-09 17:56:45,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2021-07-09 17:56:45,634 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:56:45,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:56:45,726 INFO L225 Difference]: With dead ends: 33481 [2021-07-09 17:56:45,726 INFO L226 Difference]: Without dead ends: 32789 [2021-07-09 17:56:45,728 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14532 ImplicationChecksByTransitivity, 5263.1ms TimeCoverageRelationStatistics Valid=2200, Invalid=34090, Unknown=0, NotChecked=0, Total=36290 [2021-07-09 17:56:45,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32789 states. [2021-07-09 17:56:46,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32789 to 17317. [2021-07-09 17:56:46,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17317 states, 17316 states have (on average 3.6300531300531302) internal successors, (62858), 17316 states have internal predecessors, (62858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:56:46,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17317 states to 17317 states and 62858 transitions. [2021-07-09 17:56:46,213 INFO L78 Accepts]: Start accepts. Automaton has 17317 states and 62858 transitions. Word has length 47 [2021-07-09 17:56:46,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:56:46,213 INFO L482 AbstractCegarLoop]: Abstraction has 17317 states and 62858 transitions. [2021-07-09 17:56:46,213 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:56:46,213 INFO L276 IsEmpty]: Start isEmpty. Operand 17317 states and 62858 transitions. [2021-07-09 17:56:46,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:56:46,246 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:56:46,246 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:56:46,246 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2021-07-09 17:56:46,246 INFO L430 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:56:46,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:56:46,247 INFO L82 PathProgramCache]: Analyzing trace with hash 2035685278, now seen corresponding path program 235 times [2021-07-09 17:56:46,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:56:46,247 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013012535] [2021-07-09 17:56:46,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:56:46,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:56:46,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:56:46,473 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:56:46,473 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013012535] [2021-07-09 17:56:46,474 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013012535] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:56:46,474 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:56:46,474 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:56:46,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174909492] [2021-07-09 17:56:46,474 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:56:46,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:56:46,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:56:46,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:56:46,474 INFO L87 Difference]: Start difference. First operand 17317 states and 62858 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:56:54,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:56:54,172 INFO L93 Difference]: Finished difference Result 31648 states and 113603 transitions. [2021-07-09 17:56:54,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2021-07-09 17:56:54,172 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-09 17:56:54,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:56:54,263 INFO L225 Difference]: With dead ends: 31648 [2021-07-09 17:56:54,263 INFO L226 Difference]: Without dead ends: 31499 [2021-07-09 17:56:54,266 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12115 ImplicationChecksByTransitivity, 4979.9ms TimeCoverageRelationStatistics Valid=1907, Invalid=28893, Unknown=0, NotChecked=0, Total=30800 [2021-07-09 17:56:54,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31499 states. [2021-07-09 17:56:54,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31499 to 17338. [2021-07-09 17:56:54,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17338 states, 17337 states have (on average 3.62917459768126) internal successors, (62919), 17337 states have internal predecessors, (62919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:56:54,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17338 states to 17338 states and 62919 transitions. [2021-07-09 17:56:54,765 INFO L78 Accepts]: Start accepts. Automaton has 17338 states and 62919 transitions. Word has length 47 [2021-07-09 17:56:54,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:56:54,765 INFO L482 AbstractCegarLoop]: Abstraction has 17338 states and 62919 transitions. [2021-07-09 17:56:54,766 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:56:54,766 INFO L276 IsEmpty]: Start isEmpty. Operand 17338 states and 62919 transitions. [2021-07-09 17:56:54,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-09 17:56:54,888 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:56:54,888 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:56:54,888 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2021-07-09 17:56:54,888 INFO L430 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 17:56:54,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:56:54,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1007019878, now seen corresponding path program 236 times [2021-07-09 17:56:54,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:56:54,889 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636968438] [2021-07-09 17:56:54,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:56:54,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:56:55,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:56:55,115 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:56:55,115 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636968438] [2021-07-09 17:56:55,115 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636968438] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:56:55,115 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:56:55,115 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-09 17:56:55,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58192061] [2021-07-09 17:56:55,115 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:56:55,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:56:55,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:56:55,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:56:55,115 INFO L87 Difference]: Start difference. First operand 17338 states and 62919 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 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... [2021-07-09 17:57:00,271 WARN L222 SmtUtils]: Removed 8 from assertion stack [2021-07-09 17:57:00,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2021-07-09 17:57:00,271 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2021-07-09 17:57:00,271 WARN L547 AbstractCegarLoop]: Verification canceled [2021-07-09 17:57:00,271 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was TIMEOUT (2/3) [2021-07-09 17:57:00,272 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-07-09 17:57:00,272 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-09 17:57:00,272 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-09 17:57:00,272 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-09 17:57:00,272 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-09 17:57:00,272 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-09 17:57:00,272 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-09 17:57:00,272 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-09 17:57:00,272 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == thread1Thread1of1ForFork2======== [2021-07-09 17:57:00,273 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 80 places, 65 transitions, 202 flow [2021-07-09 17:57:00,274 WARN L547 AbstractCegarLoop]: Verification canceled [2021-07-09 17:57:00,274 INFO L301 ceAbstractionStarter]: Result for error location thread1Thread1of1ForFork2 was TIMEOUT (3/3) [2021-07-09 17:57:00,274 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-09 17:57:00,275 WARN L196 ceAbstractionStarter]: Timeout [2021-07-09 17:57:00,275 INFO L202 PluginConnector]: Adding new model barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.07 05:57:00 BasicIcfg [2021-07-09 17:57:00,276 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-09 17:57:00,276 INFO L168 Benchmark]: Toolchain (without parser) took 746826.19 ms. Allocated memory was 180.4 MB in the beginning and 1.9 GB in the end (delta: 1.7 GB). Free memory was 161.0 MB in the beginning and 916.8 MB in the end (delta: -755.7 MB). Peak memory consumption was 936.3 MB. Max. memory is 8.0 GB. [2021-07-09 17:57:00,276 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.08 ms. Allocated memory is still 180.4 MB. Free memory is still 162.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-09 17:57:00,276 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.97 ms. Allocated memory is still 180.4 MB. Free memory was 161.0 MB in the beginning and 159.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-09 17:57:00,276 INFO L168 Benchmark]: Boogie Preprocessor took 19.64 ms. Allocated memory is still 180.4 MB. Free memory was 159.5 MB in the beginning and 158.6 MB in the end (delta: 884.7 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-09 17:57:00,276 INFO L168 Benchmark]: RCFGBuilder took 257.27 ms. Allocated memory is still 180.4 MB. Free memory was 158.6 MB in the beginning and 145.1 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-07-09 17:57:00,276 INFO L168 Benchmark]: TraceAbstraction took 746525.39 ms. Allocated memory was 180.4 MB in the beginning and 1.9 GB in the end (delta: 1.7 GB). Free memory was 144.6 MB in the beginning and 916.8 MB in the end (delta: -772.2 MB). Peak memory consumption was 920.6 MB. Max. memory is 8.0 GB. [2021-07-09 17:57:00,276 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 0.08 ms. Allocated memory is still 180.4 MB. Free memory is still 162.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 19.97 ms. Allocated memory is still 180.4 MB. Free memory was 161.0 MB in the beginning and 159.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 19.64 ms. Allocated memory is still 180.4 MB. Free memory was 159.5 MB in the beginning and 158.6 MB in the end (delta: 884.7 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 257.27 ms. Allocated memory is still 180.4 MB. Free memory was 158.6 MB in the beginning and 145.1 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 746525.39 ms. Allocated memory was 180.4 MB in the beginning and 1.9 GB in the end (delta: 1.7 GB). Free memory was 144.6 MB in the beginning and 916.8 MB in the end (delta: -772.2 MB). Peak memory consumption was 920.6 MB. Max. memory is 8.0 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 (17338states) and FLOYD_HOARE automaton (currently 132 states, 19 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 19 for 12ms.. - 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: 101.0ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 21.7ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 70.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=936occurred 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: 746212.2ms, OverallIterations: 236, TraceHistogramMax: 1, EmptinessCheckTime: 2930.4ms, AutomataDifference: 652382.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 224.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 70623 SDtfs, 162905 SDslu, 839905 SDs, 0 SdLazy, 650210 SolverSat, 30088 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 217753.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17943 GetRequests, 271 SyntacticMatches, 284 SemanticMatches, 17387 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 570463 ImplicationChecksByTransitivity, 395559.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=17338occurred in iteration=235, InterpolantAutomatonStates: 15922, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 36797.8ms AutomataMinimizationTime, 235 MinimizatonAttempts, 718316 StatesRemovedByMinimization, 233 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 137.9ms SsaConstructionTime, 413.3ms SatisfiabilityAnalysisTime, 52451.3ms InterpolantComputationTime, 11092 NumberOfCodeBlocks, 11092 NumberOfCodeBlocksAsserted, 236 NumberOfCheckSat, 10856 ConstructedInterpolants, 0 QuantifiedInterpolants, 148288 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 236 InterpolantComputations, 236 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 - 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: TIMEOUT, OverallTime: 1.7ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown