/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-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-13 19:46:42,910 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-13 19:46:42,912 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-13 19:46:42,943 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-13 19:46:42,998 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 [2021-07-13 19:46:43,026 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-13 19:46:43,026 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-13 19:46:43,026 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-13 19:46:43,026 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-13 19:46:43,027 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-13 19:46:43,027 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-13 19:46:43,027 INFO L138 SettingsManager]: * Use SBE=true [2021-07-13 19:46:43,027 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-13 19:46:43,028 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-13 19:46:43,028 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-13 19:46:43,028 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-13 19:46:43,028 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-13 19:46:43,028 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-13 19:46:43,028 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-13 19:46:43,028 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-13 19:46:43,028 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-13 19:46:43,029 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-13 19:46:43,029 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-13 19:46:43,029 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-13 19:46:43,029 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-13 19:46:43,029 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-13 19:46:43,029 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-13 19:46:43,029 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-13 19:46:43,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-13 19:46:43,029 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-13 19:46:43,030 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-13 19:46:43,030 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-13 19:46:43,030 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-13 19:46:43,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-13 19:46:43,030 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-13 19:46:43,030 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-13 19:46:43,030 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-13 19:46:43,292 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-13 19:46:43,307 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-13 19:46:43,309 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-13 19:46:43,309 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-13 19:46:43,310 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-13 19:46:43,311 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/barrier.wvr.bpl [2021-07-13 19:46:43,311 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/barrier.wvr.bpl' [2021-07-13 19:46:43,343 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-13 19:46:43,344 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-13 19:46:43,345 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-13 19:46:43,345 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-13 19:46:43,345 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-13 19:46:43,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:46:43" (1/1) ... [2021-07-13 19:46:43,360 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:46:43" (1/1) ... [2021-07-13 19:46:43,376 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-13 19:46:43,377 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-13 19:46:43,377 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-13 19:46:43,378 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-13 19:46:43,382 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:46:43" (1/1) ... [2021-07-13 19:46:43,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:46:43" (1/1) ... [2021-07-13 19:46:43,384 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:46:43" (1/1) ... [2021-07-13 19:46:43,384 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:46:43" (1/1) ... [2021-07-13 19:46:43,390 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:46:43" (1/1) ... [2021-07-13 19:46:43,391 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:46:43" (1/1) ... [2021-07-13 19:46:43,391 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:46:43" (1/1) ... [2021-07-13 19:46:43,395 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-13 19:46:43,396 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-13 19:46:43,396 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-13 19:46:43,396 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-13 19:46:43,398 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:46:43" (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 [2021-07-13 19:46:43,449 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-13 19:46:43,450 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-13 19:46:43,450 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-13 19:46:43,450 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-13 19:46:43,450 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-13 19:46:43,450 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-13 19:46:43,450 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-13 19:46:43,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-13 19:46:43,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-13 19:46:43,451 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-13 19:46:43,451 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-13 19:46:43,452 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-13 19:46:43,452 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-07-13 19:46:43,452 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-07-13 19:46:43,452 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-07-13 19:46:43,452 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-07-13 19:46:43,452 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-07-13 19:46:43,452 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-07-13 19:46:43,453 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2021-07-13 19:46:43,453 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2021-07-13 19:46:43,453 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2021-07-13 19:46:43,454 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-13 19:46:43,663 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-13 19:46:43,664 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-13 19:46:43,665 INFO L202 PluginConnector]: Adding new model barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 07:46:43 BoogieIcfgContainer [2021-07-13 19:46:43,665 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-13 19:46:43,666 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-13 19:46:43,666 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-13 19:46:43,668 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-13 19:46:43,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:46:43" (1/2) ... [2021-07-13 19:46:43,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60473568 and model type barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 07:46:43, skipping insertion in model container [2021-07-13 19:46:43,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 07:46:43" (2/2) ... [2021-07-13 19:46:43,669 INFO L111 eAbstractionObserver]: Analyzing ICFG barrier.wvr.bpl [2021-07-13 19:46:43,681 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-13 19:46:43,681 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-13 19:46:43,681 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-13 19:46:43,682 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-13 19:46:43,755 INFO L149 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2021-07-13 19:46:43,770 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-07-13 19:46:43,789 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-13 19:46:43,789 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-13 19:46:43,789 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-13 19:46:43,789 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-13 19:46:43,789 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-13 19:46:43,789 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-13 19:46:43,790 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-13 19:46:43,790 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == thread4Thread1of1ForFork4======== [2021-07-13 19:46:43,797 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 80 places, 65 transitions, 202 flow [2021-07-13 19:46:43,864 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) [2021-07-13 19:46:43,867 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) [2021-07-13 19:46:43,885 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-13 19:46:43,886 INFO L301 ceAbstractionStarter]: Result for error location thread4Thread1of1ForFork4 was SAFE (1/3) [2021-07-13 19:46:43,888 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-07-13 19:46:43,896 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-13 19:46:43,896 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-13 19:46:43,896 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-13 19:46:43,896 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-13 19:46:43,896 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-13 19:46:43,896 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-13 19:46:43,896 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-13 19:46:43,896 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-13 19:46:43,900 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 80 places, 65 transitions, 202 flow [2021-07-13 19:46:44,080 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) [2021-07-13 19:46:44,109 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) [2021-07-13 19:46:44,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:46:44,147 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:46:44,148 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] [2021-07-13 19:46:44,149 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:46:44,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:46:44,152 INFO L82 PathProgramCache]: Analyzing trace with hash -190243142, now seen corresponding path program 1 times [2021-07-13 19:46:44,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:46:44,158 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465221562] [2021-07-13 19:46:44,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:46:44,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:46:44,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:46:44,264 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:46:44,265 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465221562] [2021-07-13 19:46:44,266 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465221562] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:46:44,266 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:46:44,266 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-13 19:46:44,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802997009] [2021-07-13 19:46:44,298 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-13 19:46:44,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:46:44,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-13 19:46:44,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 19:46:44,323 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) [2021-07-13 19:46:44,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:46:44,399 INFO L93 Difference]: Finished difference Result 5614 states and 20074 transitions. [2021-07-13 19:46:44,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-13 19:46:44,401 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 [2021-07-13 19:46:44,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:46:44,447 INFO L225 Difference]: With dead ends: 5614 [2021-07-13 19:46:44,447 INFO L226 Difference]: Without dead ends: 5614 [2021-07-13 19:46:44,449 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 19:46:44,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5614 states. [2021-07-13 19:46:44,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5614 to 5614. [2021-07-13 19:46:44,729 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) [2021-07-13 19:46:44,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5614 states to 5614 states and 20074 transitions. [2021-07-13 19:46:44,750 INFO L78 Accepts]: Start accepts. Automaton has 5614 states and 20074 transitions. Word has length 47 [2021-07-13 19:46:44,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:46:44,750 INFO L482 AbstractCegarLoop]: Abstraction has 5614 states and 20074 transitions. [2021-07-13 19:46:44,751 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) [2021-07-13 19:46:44,751 INFO L276 IsEmpty]: Start isEmpty. Operand 5614 states and 20074 transitions. [2021-07-13 19:46:44,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:46:44,765 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:46:44,765 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] [2021-07-13 19:46:44,765 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-13 19:46:44,765 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:46:44,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:46:44,766 INFO L82 PathProgramCache]: Analyzing trace with hash -607358788, now seen corresponding path program 2 times [2021-07-13 19:46:44,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:46:44,766 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274748277] [2021-07-13 19:46:44,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:46:44,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:46:44,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:46:44,841 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:46:44,841 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274748277] [2021-07-13 19:46:44,841 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274748277] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:46:44,841 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:46:44,841 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-13 19:46:44,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546286274] [2021-07-13 19:46:44,842 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-13 19:46:44,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:46:44,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-13 19:46:44,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 19:46:44,843 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) [2021-07-13 19:46:44,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:46:44,886 INFO L93 Difference]: Finished difference Result 4822 states and 17110 transitions. [2021-07-13 19:46:44,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-13 19:46:44,887 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 [2021-07-13 19:46:44,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:46:44,910 INFO L225 Difference]: With dead ends: 4822 [2021-07-13 19:46:44,910 INFO L226 Difference]: Without dead ends: 4822 [2021-07-13 19:46:44,912 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 [2021-07-13 19:46:44,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4822 states. [2021-07-13 19:46:45,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4822 to 4822. [2021-07-13 19:46:45,049 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) [2021-07-13 19:46:45,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4822 states to 4822 states and 17110 transitions. [2021-07-13 19:46:45,063 INFO L78 Accepts]: Start accepts. Automaton has 4822 states and 17110 transitions. Word has length 47 [2021-07-13 19:46:45,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:46:45,063 INFO L482 AbstractCegarLoop]: Abstraction has 4822 states and 17110 transitions. [2021-07-13 19:46:45,064 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) [2021-07-13 19:46:45,064 INFO L276 IsEmpty]: Start isEmpty. Operand 4822 states and 17110 transitions. [2021-07-13 19:46:45,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:46:45,077 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:46:45,077 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] [2021-07-13 19:46:45,077 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-13 19:46:45,077 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:46:45,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:46:45,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1880871100, now seen corresponding path program 3 times [2021-07-13 19:46:45,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:46:45,078 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493955184] [2021-07-13 19:46:45,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:46:45,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:46:45,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:46:45,548 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:46:45,548 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493955184] [2021-07-13 19:46:45,548 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493955184] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:46:45,548 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:46:45,548 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:46:45,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588556182] [2021-07-13 19:46:45,549 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:46:45,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:46:45,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:46:45,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:46:45,549 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) [2021-07-13 19:46:46,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:46:46,890 INFO L93 Difference]: Finished difference Result 5573 states and 19644 transitions. [2021-07-13 19:46:46,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-13 19:46:46,890 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 [2021-07-13 19:46:46,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:46:46,915 INFO L225 Difference]: With dead ends: 5573 [2021-07-13 19:46:46,915 INFO L226 Difference]: Without dead ends: 5446 [2021-07-13 19:46:46,916 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 884.8ms TimeCoverageRelationStatistics Valid=167, Invalid=1555, Unknown=0, NotChecked=0, Total=1722 [2021-07-13 19:46:46,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5446 states. [2021-07-13 19:46:47,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5446 to 5018. [2021-07-13 19:46:47,032 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) [2021-07-13 19:46:47,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 17748 transitions. [2021-07-13 19:46:47,047 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 17748 transitions. Word has length 47 [2021-07-13 19:46:47,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:46:47,048 INFO L482 AbstractCegarLoop]: Abstraction has 5018 states and 17748 transitions. [2021-07-13 19:46:47,048 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) [2021-07-13 19:46:47,048 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 17748 transitions. [2021-07-13 19:46:47,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:46:47,059 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:46:47,059 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] [2021-07-13 19:46:47,060 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-13 19:46:47,060 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:46:47,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:46:47,060 INFO L82 PathProgramCache]: Analyzing trace with hash 530122496, now seen corresponding path program 4 times [2021-07-13 19:46:47,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:46:47,060 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430620032] [2021-07-13 19:46:47,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:46:47,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:46:47,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:46:47,465 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:46:47,465 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430620032] [2021-07-13 19:46:47,465 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430620032] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:46:47,467 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:46:47,467 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:46:47,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873737417] [2021-07-13 19:46:47,468 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:46:47,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:46:47,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:46:47,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:46:47,469 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) [2021-07-13 19:46:49,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:46:49,504 INFO L93 Difference]: Finished difference Result 7632 states and 26869 transitions. [2021-07-13 19:46:49,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-07-13 19:46:49,505 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-13 19:46:49,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:46:49,534 INFO L225 Difference]: With dead ends: 7632 [2021-07-13 19:46:49,534 INFO L226 Difference]: Without dead ends: 7543 [2021-07-13 19:46:49,535 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 1139.8ms TimeCoverageRelationStatistics Valid=262, Invalid=2288, Unknown=0, NotChecked=0, Total=2550 [2021-07-13 19:46:49,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7543 states. [2021-07-13 19:46:49,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7543 to 5222. [2021-07-13 19:46:49,691 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) [2021-07-13 19:46:49,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5222 states to 5222 states and 18418 transitions. [2021-07-13 19:46:49,705 INFO L78 Accepts]: Start accepts. Automaton has 5222 states and 18418 transitions. Word has length 47 [2021-07-13 19:46:49,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:46:49,706 INFO L482 AbstractCegarLoop]: Abstraction has 5222 states and 18418 transitions. [2021-07-13 19:46:49,706 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:46:49,706 INFO L276 IsEmpty]: Start isEmpty. Operand 5222 states and 18418 transitions. [2021-07-13 19:46:49,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:46:49,736 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:46:49,736 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] [2021-07-13 19:46:49,736 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-13 19:46:49,736 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:46:49,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:46:49,737 INFO L82 PathProgramCache]: Analyzing trace with hash -320529412, now seen corresponding path program 5 times [2021-07-13 19:46:49,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:46:49,737 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103741393] [2021-07-13 19:46:49,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:46:49,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:46:50,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:46:50,031 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:46:50,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103741393] [2021-07-13 19:46:50,031 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103741393] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:46:50,031 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:46:50,031 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:46:50,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007493752] [2021-07-13 19:46:50,031 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:46:50,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:46:50,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:46:50,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:46:50,032 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) [2021-07-13 19:46:51,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:46:51,898 INFO L93 Difference]: Finished difference Result 8296 states and 29491 transitions. [2021-07-13 19:46:51,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-07-13 19:46:51,898 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 [2021-07-13 19:46:51,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:46:51,921 INFO L225 Difference]: With dead ends: 8296 [2021-07-13 19:46:51,921 INFO L226 Difference]: Without dead ends: 8193 [2021-07-13 19:46:51,922 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 1054.7ms TimeCoverageRelationStatistics Valid=256, Invalid=2396, Unknown=0, NotChecked=0, Total=2652 [2021-07-13 19:46:51,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8193 states. [2021-07-13 19:46:52,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8193 to 5210. [2021-07-13 19:46:52,052 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) [2021-07-13 19:46:52,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5210 states to 5210 states and 18382 transitions. [2021-07-13 19:46:52,066 INFO L78 Accepts]: Start accepts. Automaton has 5210 states and 18382 transitions. Word has length 47 [2021-07-13 19:46:52,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:46:52,066 INFO L482 AbstractCegarLoop]: Abstraction has 5210 states and 18382 transitions. [2021-07-13 19:46:52,066 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) [2021-07-13 19:46:52,066 INFO L276 IsEmpty]: Start isEmpty. Operand 5210 states and 18382 transitions. [2021-07-13 19:46:52,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:46:52,077 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:46:52,078 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] [2021-07-13 19:46:52,078 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-13 19:46:52,078 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:46:52,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:46:52,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1855278140, now seen corresponding path program 6 times [2021-07-13 19:46:52,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:46:52,079 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466470983] [2021-07-13 19:46:52,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:46:52,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:46:52,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:46:52,324 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:46:52,324 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466470983] [2021-07-13 19:46:52,324 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466470983] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:46:52,324 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:46:52,324 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 19:46:52,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237595375] [2021-07-13 19:46:52,325 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 19:46:52,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:46:52,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 19:46:52,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-07-13 19:46:52,325 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) [2021-07-13 19:46:53,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:46:53,817 INFO L93 Difference]: Finished difference Result 6915 states and 24041 transitions. [2021-07-13 19:46:53,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-07-13 19:46:53,817 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 [2021-07-13 19:46:53,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:46:53,836 INFO L225 Difference]: With dead ends: 6915 [2021-07-13 19:46:53,837 INFO L226 Difference]: Without dead ends: 6778 [2021-07-13 19:46:53,837 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 903.2ms TimeCoverageRelationStatistics Valid=224, Invalid=2032, Unknown=0, NotChecked=0, Total=2256 [2021-07-13 19:46:53,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6778 states. [2021-07-13 19:46:53,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6778 to 5402. [2021-07-13 19:46:53,956 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) [2021-07-13 19:46:53,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5402 states to 5402 states and 19000 transitions. [2021-07-13 19:46:53,969 INFO L78 Accepts]: Start accepts. Automaton has 5402 states and 19000 transitions. Word has length 47 [2021-07-13 19:46:53,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:46:53,969 INFO L482 AbstractCegarLoop]: Abstraction has 5402 states and 19000 transitions. [2021-07-13 19:46:53,970 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) [2021-07-13 19:46:53,970 INFO L276 IsEmpty]: Start isEmpty. Operand 5402 states and 19000 transitions. [2021-07-13 19:46:53,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:46:53,981 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:46:53,981 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] [2021-07-13 19:46:53,981 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-13 19:46:53,982 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:46:53,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:46:53,982 INFO L82 PathProgramCache]: Analyzing trace with hash -123596322, now seen corresponding path program 7 times [2021-07-13 19:46:53,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:46:53,982 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658332881] [2021-07-13 19:46:53,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:46:53,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:46:54,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:46:54,270 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:46:54,270 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658332881] [2021-07-13 19:46:54,270 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658332881] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:46:54,270 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:46:54,270 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:46:54,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783201371] [2021-07-13 19:46:54,271 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:46:54,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:46:54,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:46:54,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:46:54,271 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) [2021-07-13 19:46:56,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:46:56,061 INFO L93 Difference]: Finished difference Result 7850 states and 27581 transitions. [2021-07-13 19:46:56,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-07-13 19:46:56,061 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 [2021-07-13 19:46:56,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:46:56,081 INFO L225 Difference]: With dead ends: 7850 [2021-07-13 19:46:56,081 INFO L226 Difference]: Without dead ends: 7761 [2021-07-13 19:46:56,082 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 643 ImplicationChecksByTransitivity, 1148.5ms TimeCoverageRelationStatistics Valid=298, Invalid=2564, Unknown=0, NotChecked=0, Total=2862 [2021-07-13 19:46:56,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7761 states. [2021-07-13 19:46:56,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7761 to 5406. [2021-07-13 19:46:56,204 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) [2021-07-13 19:46:56,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5406 states to 5406 states and 19008 transitions. [2021-07-13 19:46:56,218 INFO L78 Accepts]: Start accepts. Automaton has 5406 states and 19008 transitions. Word has length 47 [2021-07-13 19:46:56,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:46:56,218 INFO L482 AbstractCegarLoop]: Abstraction has 5406 states and 19008 transitions. [2021-07-13 19:46:56,218 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) [2021-07-13 19:46:56,218 INFO L276 IsEmpty]: Start isEmpty. Operand 5406 states and 19008 transitions. [2021-07-13 19:46:56,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:46:56,229 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:46:56,229 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] [2021-07-13 19:46:56,229 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-13 19:46:56,229 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:46:56,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:46:56,229 INFO L82 PathProgramCache]: Analyzing trace with hash -974248230, now seen corresponding path program 8 times [2021-07-13 19:46:56,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:46:56,230 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124856111] [2021-07-13 19:46:56,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:46:56,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:46:56,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:46:56,473 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:46:56,473 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124856111] [2021-07-13 19:46:56,473 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124856111] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:46:56,473 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:46:56,473 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:46:56,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199051496] [2021-07-13 19:46:56,474 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:46:56,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:46:56,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:46:56,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:46:56,474 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) [2021-07-13 19:46:58,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:46:58,332 INFO L93 Difference]: Finished difference Result 8217 states and 29113 transitions. [2021-07-13 19:46:58,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-07-13 19:46:58,332 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 [2021-07-13 19:46:58,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:46:58,351 INFO L225 Difference]: With dead ends: 8217 [2021-07-13 19:46:58,351 INFO L226 Difference]: Without dead ends: 8086 [2021-07-13 19:46:58,352 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 613 ImplicationChecksByTransitivity, 1080.3ms TimeCoverageRelationStatistics Valid=275, Invalid=2481, Unknown=0, NotChecked=0, Total=2756 [2021-07-13 19:46:58,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8086 states. [2021-07-13 19:46:58,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8086 to 5366. [2021-07-13 19:46:58,473 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) [2021-07-13 19:46:58,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5366 states to 5366 states and 18876 transitions. [2021-07-13 19:46:58,487 INFO L78 Accepts]: Start accepts. Automaton has 5366 states and 18876 transitions. Word has length 47 [2021-07-13 19:46:58,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:46:58,487 INFO L482 AbstractCegarLoop]: Abstraction has 5366 states and 18876 transitions. [2021-07-13 19:46:58,487 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) [2021-07-13 19:46:58,487 INFO L276 IsEmpty]: Start isEmpty. Operand 5366 states and 18876 transitions. [2021-07-13 19:46:58,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:46:58,497 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:46:58,497 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] [2021-07-13 19:46:58,498 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-13 19:46:58,498 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:46:58,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:46:58,498 INFO L82 PathProgramCache]: Analyzing trace with hash -813197124, now seen corresponding path program 9 times [2021-07-13 19:46:58,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:46:58,498 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480060156] [2021-07-13 19:46:58,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:46:58,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:46:58,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:46:58,754 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:46:58,754 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480060156] [2021-07-13 19:46:58,754 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480060156] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:46:58,754 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:46:58,754 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:46:58,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886470181] [2021-07-13 19:46:58,754 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:46:58,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:46:58,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:46:58,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:46:58,755 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) [2021-07-13 19:46:59,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:46:59,998 INFO L93 Difference]: Finished difference Result 6007 states and 21031 transitions. [2021-07-13 19:47:00,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-07-13 19:47:00,002 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 [2021-07-13 19:47:00,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:47:00,015 INFO L225 Difference]: With dead ends: 6007 [2021-07-13 19:47:00,015 INFO L226 Difference]: Without dead ends: 5880 [2021-07-13 19:47:00,016 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 782.4ms TimeCoverageRelationStatistics Valid=196, Invalid=1874, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:47:00,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5880 states. [2021-07-13 19:47:00,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5880 to 5378. [2021-07-13 19:47:00,111 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) [2021-07-13 19:47:00,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5378 states to 5378 states and 18906 transitions. [2021-07-13 19:47:00,124 INFO L78 Accepts]: Start accepts. Automaton has 5378 states and 18906 transitions. Word has length 47 [2021-07-13 19:47:00,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:47:00,125 INFO L482 AbstractCegarLoop]: Abstraction has 5378 states and 18906 transitions. [2021-07-13 19:47:00,125 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) [2021-07-13 19:47:00,125 INFO L276 IsEmpty]: Start isEmpty. Operand 5378 states and 18906 transitions. [2021-07-13 19:47:00,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:47:00,134 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:47:00,135 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] [2021-07-13 19:47:00,135 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-07-13 19:47:00,135 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:47:00,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:47:00,135 INFO L82 PathProgramCache]: Analyzing trace with hash 2131021568, now seen corresponding path program 10 times [2021-07-13 19:47:00,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:47:00,135 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735395879] [2021-07-13 19:47:00,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:47:00,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:47:00,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:47:00,374 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:47:00,374 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735395879] [2021-07-13 19:47:00,374 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735395879] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:47:00,374 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:47:00,374 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:47:00,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541994347] [2021-07-13 19:47:00,374 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:47:00,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:47:00,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:47:00,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:47:00,375 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) [2021-07-13 19:47:02,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:47:02,238 INFO L93 Difference]: Finished difference Result 7954 states and 27964 transitions. [2021-07-13 19:47:02,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-07-13 19:47:02,239 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 [2021-07-13 19:47:02,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:47:02,256 INFO L225 Difference]: With dead ends: 7954 [2021-07-13 19:47:02,257 INFO L226 Difference]: Without dead ends: 7865 [2021-07-13 19:47:02,257 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 687 ImplicationChecksByTransitivity, 1111.9ms TimeCoverageRelationStatistics Valid=301, Invalid=2779, Unknown=0, NotChecked=0, Total=3080 [2021-07-13 19:47:02,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7865 states. [2021-07-13 19:47:02,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7865 to 5394. [2021-07-13 19:47:02,367 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) [2021-07-13 19:47:02,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5394 states to 5394 states and 18952 transitions. [2021-07-13 19:47:02,380 INFO L78 Accepts]: Start accepts. Automaton has 5394 states and 18952 transitions. Word has length 47 [2021-07-13 19:47:02,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:47:02,380 INFO L482 AbstractCegarLoop]: Abstraction has 5394 states and 18952 transitions. [2021-07-13 19:47:02,380 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) [2021-07-13 19:47:02,380 INFO L276 IsEmpty]: Start isEmpty. Operand 5394 states and 18952 transitions. [2021-07-13 19:47:02,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:47:02,390 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:47:02,390 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] [2021-07-13 19:47:02,391 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-07-13 19:47:02,391 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:47:02,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:47:02,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1280369660, now seen corresponding path program 11 times [2021-07-13 19:47:02,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:47:02,391 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889675608] [2021-07-13 19:47:02,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:47:02,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:47:02,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:47:02,666 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:47:02,666 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889675608] [2021-07-13 19:47:02,666 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889675608] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:47:02,666 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:47:02,666 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:47:02,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077031849] [2021-07-13 19:47:02,667 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:47:02,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:47:02,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:47:02,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:47:02,668 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) [2021-07-13 19:47:04,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:47:04,649 INFO L93 Difference]: Finished difference Result 8522 states and 30214 transitions. [2021-07-13 19:47:04,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-07-13 19:47:04,649 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 [2021-07-13 19:47:04,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:47:04,668 INFO L225 Difference]: With dead ends: 8522 [2021-07-13 19:47:04,668 INFO L226 Difference]: Without dead ends: 8419 [2021-07-13 19:47:04,669 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 839 ImplicationChecksByTransitivity, 1216.8ms TimeCoverageRelationStatistics Valid=328, Invalid=3212, Unknown=0, NotChecked=0, Total=3540 [2021-07-13 19:47:04,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8419 states. [2021-07-13 19:47:04,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8419 to 5374. [2021-07-13 19:47:04,787 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) [2021-07-13 19:47:04,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5374 states to 5374 states and 18900 transitions. [2021-07-13 19:47:04,800 INFO L78 Accepts]: Start accepts. Automaton has 5374 states and 18900 transitions. Word has length 47 [2021-07-13 19:47:04,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:47:04,800 INFO L482 AbstractCegarLoop]: Abstraction has 5374 states and 18900 transitions. [2021-07-13 19:47:04,801 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) [2021-07-13 19:47:04,801 INFO L276 IsEmpty]: Start isEmpty. Operand 5374 states and 18900 transitions. [2021-07-13 19:47:04,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:47:04,811 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:47:04,811 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] [2021-07-13 19:47:04,811 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-07-13 19:47:04,811 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:47:04,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:47:04,812 INFO L82 PathProgramCache]: Analyzing trace with hash 728726234, now seen corresponding path program 12 times [2021-07-13 19:47:04,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:47:04,812 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729089353] [2021-07-13 19:47:04,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:47:04,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:47:05,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:47:05,070 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:47:05,070 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729089353] [2021-07-13 19:47:05,070 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729089353] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:47:05,070 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:47:05,070 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:47:05,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121353968] [2021-07-13 19:47:05,071 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:47:05,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:47:05,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:47:05,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:47:05,071 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) [2021-07-13 19:47:06,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:47:06,257 INFO L93 Difference]: Finished difference Result 5781 states and 20210 transitions. [2021-07-13 19:47:06,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-07-13 19:47:06,258 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 [2021-07-13 19:47:06,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:47:06,270 INFO L225 Difference]: With dead ends: 5781 [2021-07-13 19:47:06,270 INFO L226 Difference]: Without dead ends: 5654 [2021-07-13 19:47:06,270 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 769.0ms TimeCoverageRelationStatistics Valid=183, Invalid=1797, Unknown=0, NotChecked=0, Total=1980 [2021-07-13 19:47:06,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5654 states. [2021-07-13 19:47:06,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5654 to 5386. [2021-07-13 19:47:06,360 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) [2021-07-13 19:47:06,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5386 states to 5386 states and 18930 transitions. [2021-07-13 19:47:06,373 INFO L78 Accepts]: Start accepts. Automaton has 5386 states and 18930 transitions. Word has length 47 [2021-07-13 19:47:06,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:47:06,373 INFO L482 AbstractCegarLoop]: Abstraction has 5386 states and 18930 transitions. [2021-07-13 19:47:06,373 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) [2021-07-13 19:47:06,373 INFO L276 IsEmpty]: Start isEmpty. Operand 5386 states and 18930 transitions. [2021-07-13 19:47:06,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:47:06,382 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:47:06,382 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] [2021-07-13 19:47:06,382 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-07-13 19:47:06,382 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:47:06,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:47:06,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1738869802, now seen corresponding path program 13 times [2021-07-13 19:47:06,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:47:06,383 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617937456] [2021-07-13 19:47:06,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:47:06,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:47:06,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:47:06,600 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:47:06,600 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617937456] [2021-07-13 19:47:06,600 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617937456] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:47:06,600 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:47:06,600 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:47:06,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805135040] [2021-07-13 19:47:06,600 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:47:06,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:47:06,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:47:06,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:47:06,601 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) [2021-07-13 19:47:07,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:47:07,720 INFO L93 Difference]: Finished difference Result 5850 states and 20412 transitions. [2021-07-13 19:47:07,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-07-13 19:47:07,720 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 [2021-07-13 19:47:07,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:47:07,733 INFO L225 Difference]: With dead ends: 5850 [2021-07-13 19:47:07,733 INFO L226 Difference]: Without dead ends: 5753 [2021-07-13 19:47:07,734 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 677.1ms TimeCoverageRelationStatistics Valid=178, Invalid=1714, Unknown=0, NotChecked=0, Total=1892 [2021-07-13 19:47:07,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5753 states. [2021-07-13 19:47:07,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5753 to 5392. [2021-07-13 19:47:07,844 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) [2021-07-13 19:47:07,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5392 states to 5392 states and 18945 transitions. [2021-07-13 19:47:07,857 INFO L78 Accepts]: Start accepts. Automaton has 5392 states and 18945 transitions. Word has length 47 [2021-07-13 19:47:07,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:47:07,857 INFO L482 AbstractCegarLoop]: Abstraction has 5392 states and 18945 transitions. [2021-07-13 19:47:07,858 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) [2021-07-13 19:47:07,858 INFO L276 IsEmpty]: Start isEmpty. Operand 5392 states and 18945 transitions. [2021-07-13 19:47:07,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:47:07,866 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:47:07,867 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] [2021-07-13 19:47:07,867 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-07-13 19:47:07,867 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:47:07,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:47:07,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1736195976, now seen corresponding path program 14 times [2021-07-13 19:47:07,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:47:07,867 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727164749] [2021-07-13 19:47:07,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:47:07,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:47:08,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:47:08,130 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:47:08,130 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727164749] [2021-07-13 19:47:08,130 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727164749] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:47:08,130 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:47:08,130 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:47:08,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900431629] [2021-07-13 19:47:08,131 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:47:08,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:47:08,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:47:08,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:47:08,131 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) [2021-07-13 19:47:09,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:47:09,270 INFO L93 Difference]: Finished difference Result 5751 states and 20107 transitions. [2021-07-13 19:47:09,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-07-13 19:47:09,270 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 [2021-07-13 19:47:09,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:47:09,282 INFO L225 Difference]: With dead ends: 5751 [2021-07-13 19:47:09,282 INFO L226 Difference]: Without dead ends: 5642 [2021-07-13 19:47:09,283 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 740.2ms TimeCoverageRelationStatistics Valid=184, Invalid=1796, Unknown=0, NotChecked=0, Total=1980 [2021-07-13 19:47:09,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5642 states. [2021-07-13 19:47:09,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5642 to 5374. [2021-07-13 19:47:09,363 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) [2021-07-13 19:47:09,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5374 states to 5374 states and 18896 transitions. [2021-07-13 19:47:09,375 INFO L78 Accepts]: Start accepts. Automaton has 5374 states and 18896 transitions. Word has length 47 [2021-07-13 19:47:09,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:47:09,376 INFO L482 AbstractCegarLoop]: Abstraction has 5374 states and 18896 transitions. [2021-07-13 19:47:09,376 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) [2021-07-13 19:47:09,376 INFO L276 IsEmpty]: Start isEmpty. Operand 5374 states and 18896 transitions. [2021-07-13 19:47:09,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:47:09,384 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:47:09,384 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] [2021-07-13 19:47:09,385 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-07-13 19:47:09,385 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:47:09,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:47:09,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1250299648, now seen corresponding path program 15 times [2021-07-13 19:47:09,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:47:09,385 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857535190] [2021-07-13 19:47:09,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:47:09,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:47:09,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:47:09,674 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:47:09,674 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857535190] [2021-07-13 19:47:09,674 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857535190] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:47:09,674 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:47:09,675 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:47:09,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642188605] [2021-07-13 19:47:09,675 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:47:09,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:47:09,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:47:09,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:47:09,675 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) [2021-07-13 19:47:10,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:47:10,968 INFO L93 Difference]: Finished difference Result 5967 states and 20772 transitions. [2021-07-13 19:47:10,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-07-13 19:47:10,968 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 [2021-07-13 19:47:10,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:47:10,980 INFO L225 Difference]: With dead ends: 5967 [2021-07-13 19:47:10,980 INFO L226 Difference]: Without dead ends: 5846 [2021-07-13 19:47:10,981 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 490 ImplicationChecksByTransitivity, 908.9ms TimeCoverageRelationStatistics Valid=223, Invalid=2227, Unknown=0, NotChecked=0, Total=2450 [2021-07-13 19:47:10,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5846 states. [2021-07-13 19:47:11,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5846 to 5380. [2021-07-13 19:47:11,063 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) [2021-07-13 19:47:11,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5380 states to 5380 states and 18909 transitions. [2021-07-13 19:47:11,075 INFO L78 Accepts]: Start accepts. Automaton has 5380 states and 18909 transitions. Word has length 47 [2021-07-13 19:47:11,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:47:11,075 INFO L482 AbstractCegarLoop]: Abstraction has 5380 states and 18909 transitions. [2021-07-13 19:47:11,075 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) [2021-07-13 19:47:11,075 INFO L276 IsEmpty]: Start isEmpty. Operand 5380 states and 18909 transitions. [2021-07-13 19:47:11,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:47:11,084 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:47:11,084 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] [2021-07-13 19:47:11,084 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-07-13 19:47:11,084 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:47:11,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:47:11,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1473246212, now seen corresponding path program 16 times [2021-07-13 19:47:11,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:47:11,085 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126765732] [2021-07-13 19:47:11,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:47:11,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:47:11,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:47:11,311 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:47:11,311 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126765732] [2021-07-13 19:47:11,312 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126765732] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:47:11,312 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:47:11,312 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:47:11,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003938908] [2021-07-13 19:47:11,312 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:47:11,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:47:11,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:47:11,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:47:11,313 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) [2021-07-13 19:47:12,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:47:12,926 INFO L93 Difference]: Finished difference Result 6544 states and 22781 transitions. [2021-07-13 19:47:12,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-07-13 19:47:12,926 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 [2021-07-13 19:47:12,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:47:12,940 INFO L225 Difference]: With dead ends: 6544 [2021-07-13 19:47:12,941 INFO L226 Difference]: Without dead ends: 6449 [2021-07-13 19:47:12,941 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 949.2ms TimeCoverageRelationStatistics Valid=256, Invalid=2606, Unknown=0, NotChecked=0, Total=2862 [2021-07-13 19:47:12,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6449 states. [2021-07-13 19:47:13,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6449 to 5382. [2021-07-13 19:47:13,027 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) [2021-07-13 19:47:13,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5382 states to 5382 states and 18914 transitions. [2021-07-13 19:47:13,039 INFO L78 Accepts]: Start accepts. Automaton has 5382 states and 18914 transitions. Word has length 47 [2021-07-13 19:47:13,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:47:13,039 INFO L482 AbstractCegarLoop]: Abstraction has 5382 states and 18914 transitions. [2021-07-13 19:47:13,040 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) [2021-07-13 19:47:13,040 INFO L276 IsEmpty]: Start isEmpty. Operand 5382 states and 18914 transitions. [2021-07-13 19:47:13,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:47:13,049 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:47:13,049 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] [2021-07-13 19:47:13,049 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-07-13 19:47:13,049 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:47:13,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:47:13,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1174354534, now seen corresponding path program 17 times [2021-07-13 19:47:13,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:47:13,049 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336570514] [2021-07-13 19:47:13,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:47:13,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:47:13,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:47:13,298 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:47:13,298 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336570514] [2021-07-13 19:47:13,298 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336570514] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:47:13,298 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:47:13,298 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:47:13,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885905731] [2021-07-13 19:47:13,299 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:47:13,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:47:13,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:47:13,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:47:13,299 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) [2021-07-13 19:47:14,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:47:14,412 INFO L93 Difference]: Finished difference Result 5846 states and 20396 transitions. [2021-07-13 19:47:14,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-07-13 19:47:14,413 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-13 19:47:14,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:47:14,424 INFO L225 Difference]: With dead ends: 5846 [2021-07-13 19:47:14,424 INFO L226 Difference]: Without dead ends: 5749 [2021-07-13 19:47:14,425 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 716.8ms TimeCoverageRelationStatistics Valid=183, Invalid=1709, Unknown=0, NotChecked=0, Total=1892 [2021-07-13 19:47:14,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5749 states. [2021-07-13 19:47:14,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5749 to 5388. [2021-07-13 19:47:14,503 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) [2021-07-13 19:47:14,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5388 states to 5388 states and 18929 transitions. [2021-07-13 19:47:14,515 INFO L78 Accepts]: Start accepts. Automaton has 5388 states and 18929 transitions. Word has length 47 [2021-07-13 19:47:14,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:47:14,515 INFO L482 AbstractCegarLoop]: Abstraction has 5388 states and 18929 transitions. [2021-07-13 19:47:14,515 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) [2021-07-13 19:47:14,515 INFO L276 IsEmpty]: Start isEmpty. Operand 5388 states and 18929 transitions. [2021-07-13 19:47:14,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:47:14,523 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:47:14,523 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] [2021-07-13 19:47:14,524 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-07-13 19:47:14,524 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:47:14,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:47:14,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1395192252, now seen corresponding path program 18 times [2021-07-13 19:47:14,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:47:14,524 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448411930] [2021-07-13 19:47:14,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:47:14,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:47:14,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:47:14,746 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:47:14,746 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448411930] [2021-07-13 19:47:14,746 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448411930] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:47:14,746 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:47:14,746 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:47:14,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568795719] [2021-07-13 19:47:14,747 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:47:14,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:47:14,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:47:14,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:47:14,747 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) [2021-07-13 19:47:15,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:47:15,927 INFO L93 Difference]: Finished difference Result 5747 states and 20091 transitions. [2021-07-13 19:47:15,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-07-13 19:47:15,927 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 [2021-07-13 19:47:15,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:47:15,939 INFO L225 Difference]: With dead ends: 5747 [2021-07-13 19:47:15,939 INFO L226 Difference]: Without dead ends: 5644 [2021-07-13 19:47:15,939 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 762.6ms TimeCoverageRelationStatistics Valid=187, Invalid=1793, Unknown=0, NotChecked=0, Total=1980 [2021-07-13 19:47:15,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5644 states. [2021-07-13 19:47:16,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5644 to 5376. [2021-07-13 19:47:16,014 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) [2021-07-13 19:47:16,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5376 states to 5376 states and 18901 transitions. [2021-07-13 19:47:16,026 INFO L78 Accepts]: Start accepts. Automaton has 5376 states and 18901 transitions. Word has length 47 [2021-07-13 19:47:16,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:47:16,026 INFO L482 AbstractCegarLoop]: Abstraction has 5376 states and 18901 transitions. [2021-07-13 19:47:16,026 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) [2021-07-13 19:47:16,026 INFO L276 IsEmpty]: Start isEmpty. Operand 5376 states and 18901 transitions. [2021-07-13 19:47:16,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:47:16,035 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:47:16,035 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] [2021-07-13 19:47:16,035 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-07-13 19:47:16,035 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:47:16,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:47:16,036 INFO L82 PathProgramCache]: Analyzing trace with hash -829163942, now seen corresponding path program 19 times [2021-07-13 19:47:16,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:47:16,036 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761028951] [2021-07-13 19:47:16,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:47:16,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:47:16,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:47:16,246 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:47:16,246 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761028951] [2021-07-13 19:47:16,246 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761028951] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:47:16,247 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:47:16,247 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:47:16,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594728407] [2021-07-13 19:47:16,247 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:47:16,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:47:16,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:47:16,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:47:16,247 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) [2021-07-13 19:47:17,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:47:17,284 INFO L93 Difference]: Finished difference Result 5823 states and 20345 transitions. [2021-07-13 19:47:17,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-13 19:47:17,284 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-13 19:47:17,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:47:17,296 INFO L225 Difference]: With dead ends: 5823 [2021-07-13 19:47:17,296 INFO L226 Difference]: Without dead ends: 5686 [2021-07-13 19:47:17,296 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 665.0ms TimeCoverageRelationStatistics Valid=171, Invalid=1635, Unknown=0, NotChecked=0, Total=1806 [2021-07-13 19:47:17,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5686 states. [2021-07-13 19:47:17,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5686 to 5418. [2021-07-13 19:47:17,372 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) [2021-07-13 19:47:17,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5418 states to 5418 states and 19006 transitions. [2021-07-13 19:47:17,384 INFO L78 Accepts]: Start accepts. Automaton has 5418 states and 19006 transitions. Word has length 47 [2021-07-13 19:47:17,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:47:17,384 INFO L482 AbstractCegarLoop]: Abstraction has 5418 states and 19006 transitions. [2021-07-13 19:47:17,384 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) [2021-07-13 19:47:17,384 INFO L276 IsEmpty]: Start isEmpty. Operand 5418 states and 19006 transitions. [2021-07-13 19:47:17,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:47:17,422 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:47:17,422 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] [2021-07-13 19:47:17,423 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-07-13 19:47:17,423 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:47:17,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:47:17,423 INFO L82 PathProgramCache]: Analyzing trace with hash -1638104550, now seen corresponding path program 20 times [2021-07-13 19:47:17,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:47:17,423 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111514648] [2021-07-13 19:47:17,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:47:17,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:47:17,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:47:17,695 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:47:17,695 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111514648] [2021-07-13 19:47:17,695 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111514648] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:47:17,695 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:47:17,695 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:47:17,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912533321] [2021-07-13 19:47:17,695 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:47:17,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:47:17,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:47:17,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:47:17,696 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) [2021-07-13 19:47:18,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:47:18,913 INFO L93 Difference]: Finished difference Result 5807 states and 20277 transitions. [2021-07-13 19:47:18,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-07-13 19:47:18,914 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 [2021-07-13 19:47:18,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:47:18,925 INFO L225 Difference]: With dead ends: 5807 [2021-07-13 19:47:18,925 INFO L226 Difference]: Without dead ends: 5662 [2021-07-13 19:47:18,926 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 793.8ms TimeCoverageRelationStatistics Valid=188, Invalid=1882, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:47:18,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5662 states. [2021-07-13 19:47:18,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5662 to 5394. [2021-07-13 19:47:19,001 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) [2021-07-13 19:47:19,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5394 states to 5394 states and 18940 transitions. [2021-07-13 19:47:19,012 INFO L78 Accepts]: Start accepts. Automaton has 5394 states and 18940 transitions. Word has length 47 [2021-07-13 19:47:19,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:47:19,012 INFO L482 AbstractCegarLoop]: Abstraction has 5394 states and 18940 transitions. [2021-07-13 19:47:19,012 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) [2021-07-13 19:47:19,012 INFO L276 IsEmpty]: Start isEmpty. Operand 5394 states and 18940 transitions. [2021-07-13 19:47:19,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:47:19,020 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:47:19,020 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] [2021-07-13 19:47:19,020 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-07-13 19:47:19,021 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:47:19,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:47:19,021 INFO L82 PathProgramCache]: Analyzing trace with hash -738208772, now seen corresponding path program 21 times [2021-07-13 19:47:19,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:47:19,021 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052489168] [2021-07-13 19:47:19,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:47:19,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:47:19,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:47:19,245 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:47:19,245 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052489168] [2021-07-13 19:47:19,245 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052489168] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:47:19,245 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:47:19,245 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:47:19,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390581733] [2021-07-13 19:47:19,246 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:47:19,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:47:19,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:47:19,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:47:19,246 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) [2021-07-13 19:47:22,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:47:22,764 INFO L93 Difference]: Finished difference Result 10437 states and 36983 transitions. [2021-07-13 19:47:22,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-07-13 19:47:22,765 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 [2021-07-13 19:47:22,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:47:22,787 INFO L225 Difference]: With dead ends: 10437 [2021-07-13 19:47:22,787 INFO L226 Difference]: Without dead ends: 10163 [2021-07-13 19:47:22,788 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2273 ImplicationChecksByTransitivity, 2134.9ms TimeCoverageRelationStatistics Valid=673, Invalid=6809, Unknown=0, NotChecked=0, Total=7482 [2021-07-13 19:47:22,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10163 states. [2021-07-13 19:47:22,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10163 to 6026. [2021-07-13 19:47:22,907 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) [2021-07-13 19:47:22,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6026 states to 6026 states and 21148 transitions. [2021-07-13 19:47:22,920 INFO L78 Accepts]: Start accepts. Automaton has 6026 states and 21148 transitions. Word has length 47 [2021-07-13 19:47:22,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:47:22,920 INFO L482 AbstractCegarLoop]: Abstraction has 6026 states and 21148 transitions. [2021-07-13 19:47:22,920 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) [2021-07-13 19:47:22,920 INFO L276 IsEmpty]: Start isEmpty. Operand 6026 states and 21148 transitions. [2021-07-13 19:47:22,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:47:22,929 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:47:22,929 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] [2021-07-13 19:47:22,929 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-07-13 19:47:22,929 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:47:22,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:47:22,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1588860680, now seen corresponding path program 22 times [2021-07-13 19:47:22,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:47:22,930 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586764547] [2021-07-13 19:47:22,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:47:22,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:47:23,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:47:23,160 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:47:23,160 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586764547] [2021-07-13 19:47:23,160 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586764547] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:47:23,160 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:47:23,160 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:47:23,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093297179] [2021-07-13 19:47:23,160 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:47:23,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:47:23,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:47:23,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:47:23,161 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) [2021-07-13 19:47:26,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:47:26,612 INFO L93 Difference]: Finished difference Result 10391 states and 37054 transitions. [2021-07-13 19:47:26,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-07-13 19:47:26,613 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 [2021-07-13 19:47:26,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:47:26,634 INFO L225 Difference]: With dead ends: 10391 [2021-07-13 19:47:26,634 INFO L226 Difference]: Without dead ends: 10284 [2021-07-13 19:47:26,636 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2074 ImplicationChecksByTransitivity, 2137.0ms TimeCoverageRelationStatistics Valid=623, Invalid=6349, Unknown=0, NotChecked=0, Total=6972 [2021-07-13 19:47:26,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10284 states. [2021-07-13 19:47:26,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10284 to 5934. [2021-07-13 19:47:26,742 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) [2021-07-13 19:47:26,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5934 states to 5934 states and 20858 transitions. [2021-07-13 19:47:26,755 INFO L78 Accepts]: Start accepts. Automaton has 5934 states and 20858 transitions. Word has length 47 [2021-07-13 19:47:26,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:47:26,755 INFO L482 AbstractCegarLoop]: Abstraction has 5934 states and 20858 transitions. [2021-07-13 19:47:26,755 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) [2021-07-13 19:47:26,755 INFO L276 IsEmpty]: Start isEmpty. Operand 5934 states and 20858 transitions. [2021-07-13 19:47:26,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:47:26,763 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:47:26,764 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] [2021-07-13 19:47:26,764 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-07-13 19:47:26,764 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:47:26,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:47:26,764 INFO L82 PathProgramCache]: Analyzing trace with hash 91740766, now seen corresponding path program 23 times [2021-07-13 19:47:26,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:47:26,764 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432918058] [2021-07-13 19:47:26,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:47:26,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:47:26,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:47:26,988 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:47:26,988 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432918058] [2021-07-13 19:47:26,988 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432918058] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:47:26,988 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:47:26,988 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:47:26,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587292803] [2021-07-13 19:47:26,989 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:47:26,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:47:26,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:47:26,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:47:26,990 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) [2021-07-13 19:47:28,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:47:28,314 INFO L93 Difference]: Finished difference Result 6577 states and 22905 transitions. [2021-07-13 19:47:28,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-07-13 19:47:28,314 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 [2021-07-13 19:47:28,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:47:28,327 INFO L225 Difference]: With dead ends: 6577 [2021-07-13 19:47:28,327 INFO L226 Difference]: Without dead ends: 6456 [2021-07-13 19:47:28,328 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 842.6ms TimeCoverageRelationStatistics Valid=220, Invalid=2230, Unknown=0, NotChecked=0, Total=2450 [2021-07-13 19:47:28,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6456 states. [2021-07-13 19:47:28,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6456 to 5940. [2021-07-13 19:47:28,420 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) [2021-07-13 19:47:28,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5940 states to 5940 states and 20871 transitions. [2021-07-13 19:47:28,435 INFO L78 Accepts]: Start accepts. Automaton has 5940 states and 20871 transitions. Word has length 47 [2021-07-13 19:47:28,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:47:28,435 INFO L482 AbstractCegarLoop]: Abstraction has 5940 states and 20871 transitions. [2021-07-13 19:47:28,435 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) [2021-07-13 19:47:28,435 INFO L276 IsEmpty]: Start isEmpty. Operand 5940 states and 20871 transitions. [2021-07-13 19:47:28,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:47:28,445 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:47:28,445 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] [2021-07-13 19:47:28,445 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-07-13 19:47:28,445 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:47:28,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:47:28,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1663162202, now seen corresponding path program 24 times [2021-07-13 19:47:28,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:47:28,445 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610540001] [2021-07-13 19:47:28,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:47:28,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:47:28,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:47:28,668 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:47:28,668 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610540001] [2021-07-13 19:47:28,668 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610540001] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:47:28,668 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:47:28,668 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:47:28,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715245713] [2021-07-13 19:47:28,668 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:47:28,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:47:28,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:47:28,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:47:28,669 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) [2021-07-13 19:47:30,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:47:30,240 INFO L93 Difference]: Finished difference Result 7065 states and 24685 transitions. [2021-07-13 19:47:30,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-07-13 19:47:30,240 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 [2021-07-13 19:47:30,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:47:30,255 INFO L225 Difference]: With dead ends: 7065 [2021-07-13 19:47:30,255 INFO L226 Difference]: Without dead ends: 6821 [2021-07-13 19:47:30,255 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 956.8ms TimeCoverageRelationStatistics Valid=252, Invalid=2610, Unknown=0, NotChecked=0, Total=2862 [2021-07-13 19:47:30,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6821 states. [2021-07-13 19:47:30,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6821 to 5936. [2021-07-13 19:47:30,341 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) [2021-07-13 19:47:30,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5936 states to 5936 states and 20861 transitions. [2021-07-13 19:47:30,355 INFO L78 Accepts]: Start accepts. Automaton has 5936 states and 20861 transitions. Word has length 47 [2021-07-13 19:47:30,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:47:30,355 INFO L482 AbstractCegarLoop]: Abstraction has 5936 states and 20861 transitions. [2021-07-13 19:47:30,355 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) [2021-07-13 19:47:30,355 INFO L276 IsEmpty]: Start isEmpty. Operand 5936 states and 20861 transitions. [2021-07-13 19:47:30,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:47:30,364 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:47:30,364 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] [2021-07-13 19:47:30,364 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-07-13 19:47:30,364 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:47:30,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:47:30,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1962053880, now seen corresponding path program 25 times [2021-07-13 19:47:30,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:47:30,365 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439614374] [2021-07-13 19:47:30,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:47:30,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:47:30,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:47:30,579 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:47:30,579 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439614374] [2021-07-13 19:47:30,579 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439614374] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:47:30,579 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:47:30,579 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:47:30,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543563359] [2021-07-13 19:47:30,580 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:47:30,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:47:30,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:47:30,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:47:30,580 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) [2021-07-13 19:47:31,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:47:31,694 INFO L93 Difference]: Finished difference Result 6458 states and 22526 transitions. [2021-07-13 19:47:31,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-07-13 19:47:31,695 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 [2021-07-13 19:47:31,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:47:31,708 INFO L225 Difference]: With dead ends: 6458 [2021-07-13 19:47:31,709 INFO L226 Difference]: Without dead ends: 6361 [2021-07-13 19:47:31,709 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 693.2ms TimeCoverageRelationStatistics Valid=183, Invalid=1797, Unknown=0, NotChecked=0, Total=1980 [2021-07-13 19:47:31,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6361 states. [2021-07-13 19:47:31,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6361 to 5950. [2021-07-13 19:47:31,817 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) [2021-07-13 19:47:31,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5950 states to 5950 states and 20888 transitions. [2021-07-13 19:47:31,832 INFO L78 Accepts]: Start accepts. Automaton has 5950 states and 20888 transitions. Word has length 47 [2021-07-13 19:47:31,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:47:31,832 INFO L482 AbstractCegarLoop]: Abstraction has 5950 states and 20888 transitions. [2021-07-13 19:47:31,833 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) [2021-07-13 19:47:31,833 INFO L276 IsEmpty]: Start isEmpty. Operand 5950 states and 20888 transitions. [2021-07-13 19:47:31,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:47:31,842 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:47:31,842 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] [2021-07-13 19:47:31,842 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-07-13 19:47:31,842 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:47:31,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:47:31,842 INFO L82 PathProgramCache]: Analyzing trace with hash 236633370, now seen corresponding path program 26 times [2021-07-13 19:47:31,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:47:31,843 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593422198] [2021-07-13 19:47:31,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:47:31,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:47:32,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:47:32,068 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:47:32,068 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593422198] [2021-07-13 19:47:32,068 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593422198] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:47:32,068 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:47:32,068 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:47:32,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912031601] [2021-07-13 19:47:32,069 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:47:32,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:47:32,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:47:32,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:47:32,069 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) [2021-07-13 19:47:33,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:47:33,267 INFO L93 Difference]: Finished difference Result 6359 states and 22221 transitions. [2021-07-13 19:47:33,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-07-13 19:47:33,267 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 [2021-07-13 19:47:33,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:47:33,281 INFO L225 Difference]: With dead ends: 6359 [2021-07-13 19:47:33,281 INFO L226 Difference]: Without dead ends: 6242 [2021-07-13 19:47:33,281 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 738.1ms TimeCoverageRelationStatistics Valid=186, Invalid=1884, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:47:33,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6242 states. [2021-07-13 19:47:33,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6242 to 5924. [2021-07-13 19:47:33,366 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) [2021-07-13 19:47:33,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5924 states to 5924 states and 20823 transitions. [2021-07-13 19:47:33,379 INFO L78 Accepts]: Start accepts. Automaton has 5924 states and 20823 transitions. Word has length 47 [2021-07-13 19:47:33,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:47:33,379 INFO L482 AbstractCegarLoop]: Abstraction has 5924 states and 20823 transitions. [2021-07-13 19:47:33,380 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) [2021-07-13 19:47:33,380 INFO L276 IsEmpty]: Start isEmpty. Operand 5924 states and 20823 transitions. [2021-07-13 19:47:33,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:47:33,389 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:47:33,389 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] [2021-07-13 19:47:33,389 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-07-13 19:47:33,389 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:47:33,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:47:33,390 INFO L82 PathProgramCache]: Analyzing trace with hash -234197158, now seen corresponding path program 27 times [2021-07-13 19:47:33,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:47:33,390 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412253662] [2021-07-13 19:47:33,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:47:33,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:47:33,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:47:33,668 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:47:33,668 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412253662] [2021-07-13 19:47:33,668 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412253662] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:47:33,668 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:47:33,668 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:47:33,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163662942] [2021-07-13 19:47:33,668 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:47:33,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:47:33,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:47:33,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:47:33,669 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) [2021-07-13 19:47:34,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:47:34,879 INFO L93 Difference]: Finished difference Result 6593 states and 23082 transitions. [2021-07-13 19:47:34,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-07-13 19:47:34,880 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 [2021-07-13 19:47:34,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:47:34,893 INFO L225 Difference]: With dead ends: 6593 [2021-07-13 19:47:34,894 INFO L226 Difference]: Without dead ends: 6466 [2021-07-13 19:47:34,894 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 828.3ms TimeCoverageRelationStatistics Valid=210, Invalid=2046, Unknown=0, NotChecked=0, Total=2256 [2021-07-13 19:47:34,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6466 states. [2021-07-13 19:47:34,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6466 to 5944. [2021-07-13 19:47:34,979 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) [2021-07-13 19:47:34,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5944 states to 5944 states and 20881 transitions. [2021-07-13 19:47:34,991 INFO L78 Accepts]: Start accepts. Automaton has 5944 states and 20881 transitions. Word has length 47 [2021-07-13 19:47:34,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:47:34,991 INFO L482 AbstractCegarLoop]: Abstraction has 5944 states and 20881 transitions. [2021-07-13 19:47:34,992 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) [2021-07-13 19:47:34,992 INFO L276 IsEmpty]: Start isEmpty. Operand 5944 states and 20881 transitions. [2021-07-13 19:47:35,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:47:35,000 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:47:35,000 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] [2021-07-13 19:47:35,000 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-07-13 19:47:35,000 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:47:35,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:47:35,000 INFO L82 PathProgramCache]: Analyzing trace with hash -1584945762, now seen corresponding path program 28 times [2021-07-13 19:47:35,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:47:35,001 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587544748] [2021-07-13 19:47:35,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:47:35,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:47:35,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:47:35,227 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:47:35,227 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587544748] [2021-07-13 19:47:35,227 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587544748] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:47:35,227 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:47:35,227 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:47:35,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951838116] [2021-07-13 19:47:35,227 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:47:35,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:47:35,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:47:35,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:47:35,228 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) [2021-07-13 19:47:37,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:47:37,205 INFO L93 Difference]: Finished difference Result 9238 states and 32604 transitions. [2021-07-13 19:47:37,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-07-13 19:47:37,206 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 [2021-07-13 19:47:37,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:47:37,227 INFO L225 Difference]: With dead ends: 9238 [2021-07-13 19:47:37,227 INFO L226 Difference]: Without dead ends: 9149 [2021-07-13 19:47:37,228 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 1177.1ms TimeCoverageRelationStatistics Valid=327, Invalid=3213, Unknown=0, NotChecked=0, Total=3540 [2021-07-13 19:47:37,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9149 states. [2021-07-13 19:47:37,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9149 to 5968. [2021-07-13 19:47:37,336 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) [2021-07-13 19:47:37,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5968 states to 5968 states and 20955 transitions. [2021-07-13 19:47:37,349 INFO L78 Accepts]: Start accepts. Automaton has 5968 states and 20955 transitions. Word has length 47 [2021-07-13 19:47:37,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:47:37,350 INFO L482 AbstractCegarLoop]: Abstraction has 5968 states and 20955 transitions. [2021-07-13 19:47:37,350 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) [2021-07-13 19:47:37,350 INFO L276 IsEmpty]: Start isEmpty. Operand 5968 states and 20955 transitions. [2021-07-13 19:47:37,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:47:37,359 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:47:37,359 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] [2021-07-13 19:47:37,359 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-07-13 19:47:37,359 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:47:37,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:47:37,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1859369626, now seen corresponding path program 29 times [2021-07-13 19:47:37,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:47:37,360 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994912154] [2021-07-13 19:47:37,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:47:37,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:47:37,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:47:37,636 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:47:37,636 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994912154] [2021-07-13 19:47:37,636 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994912154] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:47:37,636 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:47:37,636 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:47:37,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708137910] [2021-07-13 19:47:37,636 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:47:37,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:47:37,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:47:37,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:47:37,637 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) [2021-07-13 19:47:39,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:47:39,647 INFO L93 Difference]: Finished difference Result 9722 states and 34560 transitions. [2021-07-13 19:47:39,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-07-13 19:47:39,647 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 [2021-07-13 19:47:39,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:47:39,668 INFO L225 Difference]: With dead ends: 9722 [2021-07-13 19:47:39,668 INFO L226 Difference]: Without dead ends: 9619 [2021-07-13 19:47:39,669 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 919 ImplicationChecksByTransitivity, 1141.4ms TimeCoverageRelationStatistics Valid=332, Invalid=3450, Unknown=0, NotChecked=0, Total=3782 [2021-07-13 19:47:39,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9619 states. [2021-07-13 19:47:39,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9619 to 5948. [2021-07-13 19:47:39,777 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) [2021-07-13 19:47:39,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5948 states to 5948 states and 20903 transitions. [2021-07-13 19:47:39,791 INFO L78 Accepts]: Start accepts. Automaton has 5948 states and 20903 transitions. Word has length 47 [2021-07-13 19:47:39,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:47:39,791 INFO L482 AbstractCegarLoop]: Abstraction has 5948 states and 20903 transitions. [2021-07-13 19:47:39,791 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) [2021-07-13 19:47:39,791 INFO L276 IsEmpty]: Start isEmpty. Operand 5948 states and 20903 transitions. [2021-07-13 19:47:39,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:47:39,801 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:47:39,801 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] [2021-07-13 19:47:39,801 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-07-13 19:47:39,801 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:47:39,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:47:39,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1307726200, now seen corresponding path program 30 times [2021-07-13 19:47:39,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:47:39,801 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275761133] [2021-07-13 19:47:39,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:47:39,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:47:40,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:47:40,024 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:47:40,024 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275761133] [2021-07-13 19:47:40,024 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275761133] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:47:40,024 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:47:40,024 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:47:40,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274893758] [2021-07-13 19:47:40,024 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:47:40,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:47:40,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:47:40,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:47:40,025 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) [2021-07-13 19:47:41,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:47:41,158 INFO L93 Difference]: Finished difference Result 6447 states and 22511 transitions. [2021-07-13 19:47:41,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-07-13 19:47:41,158 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 [2021-07-13 19:47:41,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:47:41,172 INFO L225 Difference]: With dead ends: 6447 [2021-07-13 19:47:41,172 INFO L226 Difference]: Without dead ends: 6320 [2021-07-13 19:47:41,172 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 713.0ms TimeCoverageRelationStatistics Valid=197, Invalid=1965, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 19:47:41,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6320 states. [2021-07-13 19:47:41,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6320 to 5960. [2021-07-13 19:47:41,297 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) [2021-07-13 19:47:41,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5960 states to 5960 states and 20933 transitions. [2021-07-13 19:47:41,310 INFO L78 Accepts]: Start accepts. Automaton has 5960 states and 20933 transitions. Word has length 47 [2021-07-13 19:47:41,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:47:41,310 INFO L482 AbstractCegarLoop]: Abstraction has 5960 states and 20933 transitions. [2021-07-13 19:47:41,310 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) [2021-07-13 19:47:41,310 INFO L276 IsEmpty]: Start isEmpty. Operand 5960 states and 20933 transitions. [2021-07-13 19:47:41,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:47:41,319 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:47:41,319 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] [2021-07-13 19:47:41,319 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-07-13 19:47:41,320 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:47:41,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:47:41,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1159869836, now seen corresponding path program 31 times [2021-07-13 19:47:41,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:47:41,320 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633317811] [2021-07-13 19:47:41,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:47:41,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:47:41,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:47:41,548 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:47:41,548 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633317811] [2021-07-13 19:47:41,548 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633317811] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:47:41,548 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:47:41,548 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:47:41,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132929623] [2021-07-13 19:47:41,549 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:47:41,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:47:41,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:47:41,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:47:41,549 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) [2021-07-13 19:47:42,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:47:42,824 INFO L93 Difference]: Finished difference Result 6520 states and 22721 transitions. [2021-07-13 19:47:42,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-07-13 19:47:42,824 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 [2021-07-13 19:47:42,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:47:42,837 INFO L225 Difference]: With dead ends: 6520 [2021-07-13 19:47:42,837 INFO L226 Difference]: Without dead ends: 6423 [2021-07-13 19:47:42,838 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 838.3ms TimeCoverageRelationStatistics Valid=226, Invalid=2324, Unknown=0, NotChecked=0, Total=2550 [2021-07-13 19:47:42,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6423 states. [2021-07-13 19:47:42,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6423 to 5966. [2021-07-13 19:47:42,920 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) [2021-07-13 19:47:42,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5966 states to 5966 states and 20948 transitions. [2021-07-13 19:47:42,934 INFO L78 Accepts]: Start accepts. Automaton has 5966 states and 20948 transitions. Word has length 47 [2021-07-13 19:47:42,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:47:42,934 INFO L482 AbstractCegarLoop]: Abstraction has 5966 states and 20948 transitions. [2021-07-13 19:47:42,934 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) [2021-07-13 19:47:42,934 INFO L276 IsEmpty]: Start isEmpty. Operand 5966 states and 20948 transitions. [2021-07-13 19:47:42,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:47:42,944 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:47:42,944 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] [2021-07-13 19:47:42,944 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-07-13 19:47:42,944 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:47:42,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:47:42,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1157196010, now seen corresponding path program 32 times [2021-07-13 19:47:42,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:47:42,945 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935669486] [2021-07-13 19:47:42,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:47:42,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:47:43,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:47:43,227 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:47:43,228 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935669486] [2021-07-13 19:47:43,228 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935669486] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:47:43,228 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:47:43,228 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:47:43,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055842491] [2021-07-13 19:47:43,228 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:47:43,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:47:43,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:47:43,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:47:43,228 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) [2021-07-13 19:47:44,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:47:44,368 INFO L93 Difference]: Finished difference Result 6417 states and 22408 transitions. [2021-07-13 19:47:44,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-07-13 19:47:44,368 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 [2021-07-13 19:47:44,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:47:44,382 INFO L225 Difference]: With dead ends: 6417 [2021-07-13 19:47:44,382 INFO L226 Difference]: Without dead ends: 6308 [2021-07-13 19:47:44,383 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 797.4ms TimeCoverageRelationStatistics Valid=207, Invalid=2049, Unknown=0, NotChecked=0, Total=2256 [2021-07-13 19:47:44,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6308 states. [2021-07-13 19:47:44,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6308 to 5948. [2021-07-13 19:47:44,470 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) [2021-07-13 19:47:44,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5948 states to 5948 states and 20899 transitions. [2021-07-13 19:47:44,484 INFO L78 Accepts]: Start accepts. Automaton has 5948 states and 20899 transitions. Word has length 47 [2021-07-13 19:47:44,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:47:44,484 INFO L482 AbstractCegarLoop]: Abstraction has 5948 states and 20899 transitions. [2021-07-13 19:47:44,484 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) [2021-07-13 19:47:44,484 INFO L276 IsEmpty]: Start isEmpty. Operand 5948 states and 20899 transitions. [2021-07-13 19:47:44,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:47:44,494 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:47:44,494 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] [2021-07-13 19:47:44,495 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-07-13 19:47:44,495 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:47:44,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:47:44,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1829299614, now seen corresponding path program 33 times [2021-07-13 19:47:44,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:47:44,495 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064347291] [2021-07-13 19:47:44,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:47:44,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:47:44,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:47:44,740 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:47:44,740 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064347291] [2021-07-13 19:47:44,740 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064347291] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:47:44,740 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:47:44,740 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:47:44,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371449611] [2021-07-13 19:47:44,740 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:47:44,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:47:44,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:47:44,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:47:44,741 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) [2021-07-13 19:47:46,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:47:46,060 INFO L93 Difference]: Finished difference Result 6609 states and 22999 transitions. [2021-07-13 19:47:46,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-07-13 19:47:46,060 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 [2021-07-13 19:47:46,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:47:46,074 INFO L225 Difference]: With dead ends: 6609 [2021-07-13 19:47:46,074 INFO L226 Difference]: Without dead ends: 6488 [2021-07-13 19:47:46,075 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 591 ImplicationChecksByTransitivity, 888.6ms TimeCoverageRelationStatistics Valid=242, Invalid=2514, Unknown=0, NotChecked=0, Total=2756 [2021-07-13 19:47:46,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6488 states. [2021-07-13 19:47:46,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6488 to 5954. [2021-07-13 19:47:46,161 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) [2021-07-13 19:47:46,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5954 states to 5954 states and 20912 transitions. [2021-07-13 19:47:46,174 INFO L78 Accepts]: Start accepts. Automaton has 5954 states and 20912 transitions. Word has length 47 [2021-07-13 19:47:46,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:47:46,174 INFO L482 AbstractCegarLoop]: Abstraction has 5954 states and 20912 transitions. [2021-07-13 19:47:46,175 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) [2021-07-13 19:47:46,175 INFO L276 IsEmpty]: Start isEmpty. Operand 5954 states and 20912 transitions. [2021-07-13 19:47:46,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:47:46,184 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:47:46,184 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] [2021-07-13 19:47:46,184 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-07-13 19:47:46,184 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:47:46,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:47:46,184 INFO L82 PathProgramCache]: Analyzing trace with hash -894246246, now seen corresponding path program 34 times [2021-07-13 19:47:46,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:47:46,185 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604541051] [2021-07-13 19:47:46,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:47:46,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:47:46,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:47:46,426 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:47:46,426 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604541051] [2021-07-13 19:47:46,427 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604541051] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:47:46,427 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:47:46,427 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:47:46,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339270602] [2021-07-13 19:47:46,427 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:47:46,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:47:46,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:47:46,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:47:46,427 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) [2021-07-13 19:47:48,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:47:48,233 INFO L93 Difference]: Finished difference Result 7878 states and 27548 transitions. [2021-07-13 19:47:48,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-07-13 19:47:48,233 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 [2021-07-13 19:47:48,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:47:48,250 INFO L225 Difference]: With dead ends: 7878 [2021-07-13 19:47:48,250 INFO L226 Difference]: Without dead ends: 7783 [2021-07-13 19:47:48,251 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 795 ImplicationChecksByTransitivity, 1037.5ms TimeCoverageRelationStatistics Valid=293, Invalid=3129, Unknown=0, NotChecked=0, Total=3422 [2021-07-13 19:47:48,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7783 states. [2021-07-13 19:47:48,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7783 to 5944. [2021-07-13 19:47:48,348 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) [2021-07-13 19:47:48,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5944 states to 5944 states and 20885 transitions. [2021-07-13 19:47:48,362 INFO L78 Accepts]: Start accepts. Automaton has 5944 states and 20885 transitions. Word has length 47 [2021-07-13 19:47:48,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:47:48,362 INFO L482 AbstractCegarLoop]: Abstraction has 5944 states and 20885 transitions. [2021-07-13 19:47:48,362 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) [2021-07-13 19:47:48,362 INFO L276 IsEmpty]: Start isEmpty. Operand 5944 states and 20885 transitions. [2021-07-13 19:47:48,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:47:48,372 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:47:48,372 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] [2021-07-13 19:47:48,372 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-07-13 19:47:48,372 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:47:48,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:47:48,373 INFO L82 PathProgramCache]: Analyzing trace with hash -595354568, now seen corresponding path program 35 times [2021-07-13 19:47:48,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:47:48,373 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891869693] [2021-07-13 19:47:48,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:47:48,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:47:48,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:47:48,627 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:47:48,627 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891869693] [2021-07-13 19:47:48,627 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891869693] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:47:48,627 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:47:48,627 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:47:48,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334090573] [2021-07-13 19:47:48,627 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:47:48,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:47:48,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:47:48,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:47:48,628 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) [2021-07-13 19:47:49,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:47:49,974 INFO L93 Difference]: Finished difference Result 6605 states and 22975 transitions. [2021-07-13 19:47:49,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-07-13 19:47:49,974 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 [2021-07-13 19:47:49,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:47:49,988 INFO L225 Difference]: With dead ends: 6605 [2021-07-13 19:47:49,988 INFO L226 Difference]: Without dead ends: 6508 [2021-07-13 19:47:49,988 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 903.0ms TimeCoverageRelationStatistics Valid=241, Invalid=2411, Unknown=0, NotChecked=0, Total=2652 [2021-07-13 19:47:50,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6508 states. [2021-07-13 19:47:50,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6508 to 5952. [2021-07-13 19:47:50,078 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) [2021-07-13 19:47:50,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5952 states to 5952 states and 20903 transitions. [2021-07-13 19:47:50,093 INFO L78 Accepts]: Start accepts. Automaton has 5952 states and 20903 transitions. Word has length 47 [2021-07-13 19:47:50,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:47:50,093 INFO L482 AbstractCegarLoop]: Abstraction has 5952 states and 20903 transitions. [2021-07-13 19:47:50,093 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) [2021-07-13 19:47:50,093 INFO L276 IsEmpty]: Start isEmpty. Operand 5952 states and 20903 transitions. [2021-07-13 19:47:50,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:47:50,102 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:47:50,102 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] [2021-07-13 19:47:50,102 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-07-13 19:47:50,102 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:47:50,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:47:50,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1974192218, now seen corresponding path program 36 times [2021-07-13 19:47:50,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:47:50,104 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749418431] [2021-07-13 19:47:50,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:47:50,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:47:50,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:47:50,361 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:47:50,361 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749418431] [2021-07-13 19:47:50,361 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749418431] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:47:50,361 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:47:50,362 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:47:50,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136461485] [2021-07-13 19:47:50,362 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:47:50,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:47:50,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:47:50,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:47:50,362 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) [2021-07-13 19:47:51,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:47:51,586 INFO L93 Difference]: Finished difference Result 6502 states and 22662 transitions. [2021-07-13 19:47:51,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-07-13 19:47:51,586 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 [2021-07-13 19:47:51,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:47:51,599 INFO L225 Difference]: With dead ends: 6502 [2021-07-13 19:47:51,599 INFO L226 Difference]: Without dead ends: 6399 [2021-07-13 19:47:51,599 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 825.5ms TimeCoverageRelationStatistics Valid=219, Invalid=2133, Unknown=0, NotChecked=0, Total=2352 [2021-07-13 19:47:51,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6399 states. [2021-07-13 19:47:51,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6399 to 5940. [2021-07-13 19:47:51,685 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) [2021-07-13 19:47:51,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5940 states to 5940 states and 20875 transitions. [2021-07-13 19:47:51,699 INFO L78 Accepts]: Start accepts. Automaton has 5940 states and 20875 transitions. Word has length 47 [2021-07-13 19:47:51,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:47:51,699 INFO L482 AbstractCegarLoop]: Abstraction has 5940 states and 20875 transitions. [2021-07-13 19:47:51,699 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) [2021-07-13 19:47:51,699 INFO L276 IsEmpty]: Start isEmpty. Operand 5940 states and 20875 transitions. [2021-07-13 19:47:51,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:47:51,708 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:47:51,708 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] [2021-07-13 19:47:51,708 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-07-13 19:47:51,709 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:47:51,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:47:51,709 INFO L82 PathProgramCache]: Analyzing trace with hash 392123308, now seen corresponding path program 37 times [2021-07-13 19:47:51,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:47:51,709 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724263598] [2021-07-13 19:47:51,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:47:51,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:47:51,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:47:51,959 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:47:51,959 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724263598] [2021-07-13 19:47:51,959 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724263598] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:47:51,959 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:47:51,959 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:47:51,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079147728] [2021-07-13 19:47:51,959 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:47:51,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:47:51,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:47:51,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:47:51,960 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) [2021-07-13 19:47:53,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:47:53,046 INFO L93 Difference]: Finished difference Result 6361 states and 22242 transitions. [2021-07-13 19:47:53,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-13 19:47:53,046 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 [2021-07-13 19:47:53,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:47:53,059 INFO L225 Difference]: With dead ends: 6361 [2021-07-13 19:47:53,059 INFO L226 Difference]: Without dead ends: 6234 [2021-07-13 19:47:53,059 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 670.4ms TimeCoverageRelationStatistics Valid=175, Invalid=1717, Unknown=0, NotChecked=0, Total=1892 [2021-07-13 19:47:53,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6234 states. [2021-07-13 19:47:53,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6234 to 5976. [2021-07-13 19:47:53,162 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) [2021-07-13 19:47:53,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5976 states to 5976 states and 20989 transitions. [2021-07-13 19:47:53,175 INFO L78 Accepts]: Start accepts. Automaton has 5976 states and 20989 transitions. Word has length 47 [2021-07-13 19:47:53,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:47:53,175 INFO L482 AbstractCegarLoop]: Abstraction has 5976 states and 20989 transitions. [2021-07-13 19:47:53,175 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) [2021-07-13 19:47:53,175 INFO L276 IsEmpty]: Start isEmpty. Operand 5976 states and 20989 transitions. [2021-07-13 19:47:53,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:47:53,184 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:47:53,184 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] [2021-07-13 19:47:53,184 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-07-13 19:47:53,184 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:47:53,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:47:53,185 INFO L82 PathProgramCache]: Analyzing trace with hash -2075472728, now seen corresponding path program 38 times [2021-07-13 19:47:53,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:47:53,185 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106393845] [2021-07-13 19:47:53,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:47:53,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:47:53,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:47:53,402 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:47:53,402 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106393845] [2021-07-13 19:47:53,402 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106393845] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:47:53,402 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:47:53,403 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:47:53,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883795391] [2021-07-13 19:47:53,403 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:47:53,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:47:53,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:47:53,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:47:53,403 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) [2021-07-13 19:47:54,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:47:54,586 INFO L93 Difference]: Finished difference Result 6440 states and 22471 transitions. [2021-07-13 19:47:54,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-07-13 19:47:54,587 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 [2021-07-13 19:47:54,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:47:54,600 INFO L225 Difference]: With dead ends: 6440 [2021-07-13 19:47:54,601 INFO L226 Difference]: Without dead ends: 6343 [2021-07-13 19:47:54,601 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 749.1ms TimeCoverageRelationStatistics Valid=193, Invalid=1969, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 19:47:54,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6343 states. [2021-07-13 19:47:54,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6343 to 5982. [2021-07-13 19:47:54,686 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) [2021-07-13 19:47:54,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5982 states to 5982 states and 21004 transitions. [2021-07-13 19:47:54,699 INFO L78 Accepts]: Start accepts. Automaton has 5982 states and 21004 transitions. Word has length 47 [2021-07-13 19:47:54,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:47:54,699 INFO L482 AbstractCegarLoop]: Abstraction has 5982 states and 21004 transitions. [2021-07-13 19:47:54,699 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) [2021-07-13 19:47:54,699 INFO L276 IsEmpty]: Start isEmpty. Operand 5982 states and 21004 transitions. [2021-07-13 19:47:54,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:47:54,707 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:47:54,707 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] [2021-07-13 19:47:54,708 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-07-13 19:47:54,708 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:47:54,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:47:54,708 INFO L82 PathProgramCache]: Analyzing trace with hash -2072798902, now seen corresponding path program 39 times [2021-07-13 19:47:54,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:47:54,708 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727007898] [2021-07-13 19:47:54,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:47:54,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:47:55,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:47:55,010 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:47:55,010 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727007898] [2021-07-13 19:47:55,010 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727007898] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:47:55,010 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:47:55,010 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:47:55,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279167743] [2021-07-13 19:47:55,010 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:47:55,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:47:55,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:47:55,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:47:55,011 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) [2021-07-13 19:47:56,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:47:56,075 INFO L93 Difference]: Finished difference Result 6331 states and 22139 transitions. [2021-07-13 19:47:56,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-07-13 19:47:56,075 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 [2021-07-13 19:47:56,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:47:56,088 INFO L225 Difference]: With dead ends: 6331 [2021-07-13 19:47:56,088 INFO L226 Difference]: Without dead ends: 6222 [2021-07-13 19:47:56,090 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 746.3ms TimeCoverageRelationStatistics Valid=179, Invalid=1713, Unknown=0, NotChecked=0, Total=1892 [2021-07-13 19:47:56,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6222 states. [2021-07-13 19:47:56,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6222 to 5964. [2021-07-13 19:47:56,175 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) [2021-07-13 19:47:56,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5964 states to 5964 states and 20947 transitions. [2021-07-13 19:47:56,189 INFO L78 Accepts]: Start accepts. Automaton has 5964 states and 20947 transitions. Word has length 47 [2021-07-13 19:47:56,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:47:56,189 INFO L482 AbstractCegarLoop]: Abstraction has 5964 states and 20947 transitions. [2021-07-13 19:47:56,189 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) [2021-07-13 19:47:56,189 INFO L276 IsEmpty]: Start isEmpty. Operand 5964 states and 20947 transitions. [2021-07-13 19:47:56,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:47:56,198 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:47:56,198 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] [2021-07-13 19:47:56,198 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-07-13 19:47:56,198 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:47:56,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:47:56,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1973112992, now seen corresponding path program 40 times [2021-07-13 19:47:56,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:47:56,198 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587123978] [2021-07-13 19:47:56,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:47:56,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:47:56,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:47:56,415 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:47:56,415 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587123978] [2021-07-13 19:47:56,415 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587123978] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:47:56,415 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:47:56,415 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:47:56,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660500066] [2021-07-13 19:47:56,415 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:47:56,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:47:56,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:47:56,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:47:56,416 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) [2021-07-13 19:47:57,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:47:57,562 INFO L93 Difference]: Finished difference Result 6401 states and 22402 transitions. [2021-07-13 19:47:57,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-07-13 19:47:57,562 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 [2021-07-13 19:47:57,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:47:57,576 INFO L225 Difference]: With dead ends: 6401 [2021-07-13 19:47:57,577 INFO L226 Difference]: Without dead ends: 6256 [2021-07-13 19:47:57,577 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 743.2ms TimeCoverageRelationStatistics Valid=187, Invalid=1793, Unknown=0, NotChecked=0, Total=1980 [2021-07-13 19:47:57,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6256 states. [2021-07-13 19:47:57,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6256 to 5976. [2021-07-13 19:47:57,668 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) [2021-07-13 19:47:57,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5976 states to 5976 states and 20977 transitions. [2021-07-13 19:47:57,683 INFO L78 Accepts]: Start accepts. Automaton has 5976 states and 20977 transitions. Word has length 47 [2021-07-13 19:47:57,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:47:57,683 INFO L482 AbstractCegarLoop]: Abstraction has 5976 states and 20977 transitions. [2021-07-13 19:47:57,683 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:47:57,683 INFO L276 IsEmpty]: Start isEmpty. Operand 5976 states and 20977 transitions. [2021-07-13 19:47:57,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:47:57,694 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:47:57,694 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] [2021-07-13 19:47:57,694 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-07-13 19:47:57,694 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:47:57,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:47:57,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1255583042, now seen corresponding path program 41 times [2021-07-13 19:47:57,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:47:57,694 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280218881] [2021-07-13 19:47:57,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:47:57,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:47:57,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:47:57,937 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:47:57,937 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280218881] [2021-07-13 19:47:57,937 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280218881] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:47:57,938 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:47:57,938 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:47:57,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282098407] [2021-07-13 19:47:57,938 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:47:57,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:47:57,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:47:57,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:47:57,938 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) [2021-07-13 19:47:59,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:47:59,193 INFO L93 Difference]: Finished difference Result 6422 states and 22406 transitions. [2021-07-13 19:47:59,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-07-13 19:47:59,193 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 [2021-07-13 19:47:59,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:47:59,208 INFO L225 Difference]: With dead ends: 6422 [2021-07-13 19:47:59,209 INFO L226 Difference]: Without dead ends: 6325 [2021-07-13 19:47:59,209 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 800.7ms TimeCoverageRelationStatistics Valid=197, Invalid=1965, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 19:47:59,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6325 states. [2021-07-13 19:47:59,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6325 to 5982. [2021-07-13 19:47:59,308 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) [2021-07-13 19:47:59,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5982 states to 5982 states and 20992 transitions. [2021-07-13 19:47:59,323 INFO L78 Accepts]: Start accepts. Automaton has 5982 states and 20992 transitions. Word has length 47 [2021-07-13 19:47:59,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:47:59,324 INFO L482 AbstractCegarLoop]: Abstraction has 5982 states and 20992 transitions. [2021-07-13 19:47:59,324 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) [2021-07-13 19:47:59,324 INFO L276 IsEmpty]: Start isEmpty. Operand 5982 states and 20992 transitions. [2021-07-13 19:47:59,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:47:59,333 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:47:59,333 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] [2021-07-13 19:47:59,333 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-07-13 19:47:59,333 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:47:59,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:47:59,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1252909216, now seen corresponding path program 42 times [2021-07-13 19:47:59,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:47:59,334 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209605929] [2021-07-13 19:47:59,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:47:59,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:47:59,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:47:59,581 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:47:59,581 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209605929] [2021-07-13 19:47:59,581 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209605929] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:47:59,581 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:47:59,581 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:47:59,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122410691] [2021-07-13 19:47:59,582 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:47:59,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:47:59,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:47:59,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:47:59,582 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) [2021-07-13 19:48:00,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:48:00,638 INFO L93 Difference]: Finished difference Result 6307 states and 22053 transitions. [2021-07-13 19:48:00,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-13 19:48:00,638 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 [2021-07-13 19:48:00,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:48:00,651 INFO L225 Difference]: With dead ends: 6307 [2021-07-13 19:48:00,651 INFO L226 Difference]: Without dead ends: 6174 [2021-07-13 19:48:00,652 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 700.6ms TimeCoverageRelationStatistics Valid=180, Invalid=1712, Unknown=0, NotChecked=0, Total=1892 [2021-07-13 19:48:00,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6174 states. [2021-07-13 19:48:00,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6174 to 5940. [2021-07-13 19:48:00,753 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) [2021-07-13 19:48:00,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5940 states to 5940 states and 20867 transitions. [2021-07-13 19:48:00,766 INFO L78 Accepts]: Start accepts. Automaton has 5940 states and 20867 transitions. Word has length 47 [2021-07-13 19:48:00,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:48:00,766 INFO L482 AbstractCegarLoop]: Abstraction has 5940 states and 20867 transitions. [2021-07-13 19:48:00,766 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) [2021-07-13 19:48:00,766 INFO L276 IsEmpty]: Start isEmpty. Operand 5940 states and 20867 transitions. [2021-07-13 19:48:00,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:48:00,774 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:48:00,774 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] [2021-07-13 19:48:00,774 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-07-13 19:48:00,775 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:48:00,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:48:00,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1007165734, now seen corresponding path program 43 times [2021-07-13 19:48:00,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:48:00,775 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996900008] [2021-07-13 19:48:00,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:48:00,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:48:01,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:48:01,003 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:48:01,003 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996900008] [2021-07-13 19:48:01,003 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996900008] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:48:01,003 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:48:01,003 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:48:01,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890038072] [2021-07-13 19:48:01,003 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:48:01,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:48:01,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:48:01,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:48:01,004 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) [2021-07-13 19:48:02,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:48:02,206 INFO L93 Difference]: Finished difference Result 6586 states and 23006 transitions. [2021-07-13 19:48:02,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-07-13 19:48:02,206 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 [2021-07-13 19:48:02,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:48:02,220 INFO L225 Difference]: With dead ends: 6586 [2021-07-13 19:48:02,220 INFO L226 Difference]: Without dead ends: 6401 [2021-07-13 19:48:02,221 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 834.0ms TimeCoverageRelationStatistics Valid=238, Invalid=2414, Unknown=0, NotChecked=0, Total=2652 [2021-07-13 19:48:02,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6401 states. [2021-07-13 19:48:02,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6401 to 5944. [2021-07-13 19:48:02,306 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) [2021-07-13 19:48:02,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5944 states to 5944 states and 20877 transitions. [2021-07-13 19:48:02,319 INFO L78 Accepts]: Start accepts. Automaton has 5944 states and 20877 transitions. Word has length 47 [2021-07-13 19:48:02,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:48:02,320 INFO L482 AbstractCegarLoop]: Abstraction has 5944 states and 20877 transitions. [2021-07-13 19:48:02,320 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) [2021-07-13 19:48:02,320 INFO L276 IsEmpty]: Start isEmpty. Operand 5944 states and 20877 transitions. [2021-07-13 19:48:02,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:48:02,329 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:48:02,329 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] [2021-07-13 19:48:02,329 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-07-13 19:48:02,329 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:48:02,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:48:02,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1124657476, now seen corresponding path program 44 times [2021-07-13 19:48:02,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:48:02,330 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406384976] [2021-07-13 19:48:02,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:48:02,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:48:02,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:48:02,601 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:48:02,602 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406384976] [2021-07-13 19:48:02,602 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406384976] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:48:02,602 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:48:02,602 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:48:02,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475818439] [2021-07-13 19:48:02,602 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:48:02,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:48:02,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:48:02,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:48:02,602 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) [2021-07-13 19:48:03,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:48:03,867 INFO L93 Difference]: Finished difference Result 6678 states and 23209 transitions. [2021-07-13 19:48:03,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-07-13 19:48:03,868 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 [2021-07-13 19:48:03,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:48:03,882 INFO L225 Difference]: With dead ends: 6678 [2021-07-13 19:48:03,882 INFO L226 Difference]: Without dead ends: 6541 [2021-07-13 19:48:03,883 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 880.5ms TimeCoverageRelationStatistics Valid=243, Invalid=2409, Unknown=0, NotChecked=0, Total=2652 [2021-07-13 19:48:03,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6541 states. [2021-07-13 19:48:03,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6541 to 5950. [2021-07-13 19:48:03,970 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) [2021-07-13 19:48:03,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5950 states to 5950 states and 20890 transitions. [2021-07-13 19:48:03,983 INFO L78 Accepts]: Start accepts. Automaton has 5950 states and 20890 transitions. Word has length 47 [2021-07-13 19:48:03,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:48:03,983 INFO L482 AbstractCegarLoop]: Abstraction has 5950 states and 20890 transitions. [2021-07-13 19:48:03,983 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) [2021-07-13 19:48:03,984 INFO L276 IsEmpty]: Start isEmpty. Operand 5950 states and 20890 transitions. [2021-07-13 19:48:03,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:48:03,993 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:48:03,993 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] [2021-07-13 19:48:03,993 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-07-13 19:48:03,993 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:48:03,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:48:03,993 INFO L82 PathProgramCache]: Analyzing trace with hash 446763960, now seen corresponding path program 45 times [2021-07-13 19:48:03,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:48:03,993 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245397824] [2021-07-13 19:48:03,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:48:03,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:48:04,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:48:04,234 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:48:04,234 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245397824] [2021-07-13 19:48:04,234 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245397824] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:48:04,234 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:48:04,234 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:48:04,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692769520] [2021-07-13 19:48:04,234 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:48:04,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:48:04,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:48:04,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:48:04,235 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) [2021-07-13 19:48:06,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:48:06,727 INFO L93 Difference]: Finished difference Result 9988 states and 35005 transitions. [2021-07-13 19:48:06,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-07-13 19:48:06,727 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 [2021-07-13 19:48:06,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:48:06,749 INFO L225 Difference]: With dead ends: 9988 [2021-07-13 19:48:06,749 INFO L226 Difference]: Without dead ends: 9893 [2021-07-13 19:48:06,749 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1396 ImplicationChecksByTransitivity, 1288.0ms TimeCoverageRelationStatistics Valid=394, Invalid=4718, Unknown=0, NotChecked=0, Total=5112 [2021-07-13 19:48:06,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9893 states. [2021-07-13 19:48:06,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9893 to 5948. [2021-07-13 19:48:06,855 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) [2021-07-13 19:48:06,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5948 states to 5948 states and 20891 transitions. [2021-07-13 19:48:06,869 INFO L78 Accepts]: Start accepts. Automaton has 5948 states and 20891 transitions. Word has length 47 [2021-07-13 19:48:06,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:48:06,870 INFO L482 AbstractCegarLoop]: Abstraction has 5948 states and 20891 transitions. [2021-07-13 19:48:06,870 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) [2021-07-13 19:48:06,870 INFO L276 IsEmpty]: Start isEmpty. Operand 5948 states and 20891 transitions. [2021-07-13 19:48:06,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:48:06,879 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:48:06,879 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] [2021-07-13 19:48:06,880 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-07-13 19:48:06,880 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:48:06,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:48:06,880 INFO L82 PathProgramCache]: Analyzing trace with hash 745655638, now seen corresponding path program 46 times [2021-07-13 19:48:06,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:48:06,880 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248888777] [2021-07-13 19:48:06,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:48:06,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:48:07,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:48:07,166 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:48:07,166 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248888777] [2021-07-13 19:48:07,166 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248888777] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:48:07,166 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:48:07,167 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:48:07,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916482122] [2021-07-13 19:48:07,167 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:48:07,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:48:07,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:48:07,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:48:07,167 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) [2021-07-13 19:48:08,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:48:08,449 INFO L93 Difference]: Finished difference Result 6579 states and 22906 transitions. [2021-07-13 19:48:08,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-07-13 19:48:08,449 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 [2021-07-13 19:48:08,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:48:08,463 INFO L225 Difference]: With dead ends: 6579 [2021-07-13 19:48:08,463 INFO L226 Difference]: Without dead ends: 6482 [2021-07-13 19:48:08,463 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 524 ImplicationChecksByTransitivity, 895.9ms TimeCoverageRelationStatistics Valid=235, Invalid=2315, Unknown=0, NotChecked=0, Total=2550 [2021-07-13 19:48:08,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6482 states. [2021-07-13 19:48:08,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6482 to 5956. [2021-07-13 19:48:08,568 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) [2021-07-13 19:48:08,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5956 states to 5956 states and 20909 transitions. [2021-07-13 19:48:08,582 INFO L78 Accepts]: Start accepts. Automaton has 5956 states and 20909 transitions. Word has length 47 [2021-07-13 19:48:08,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:48:08,582 INFO L482 AbstractCegarLoop]: Abstraction has 5956 states and 20909 transitions. [2021-07-13 19:48:08,582 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) [2021-07-13 19:48:08,582 INFO L276 IsEmpty]: Start isEmpty. Operand 5956 states and 20909 transitions. [2021-07-13 19:48:08,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:48:08,592 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:48:08,592 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] [2021-07-13 19:48:08,592 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-07-13 19:48:08,592 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:48:08,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:48:08,593 INFO L82 PathProgramCache]: Analyzing trace with hash -979764872, now seen corresponding path program 47 times [2021-07-13 19:48:08,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:48:08,593 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376869161] [2021-07-13 19:48:08,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:48:08,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:48:08,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:48:08,813 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:48:08,813 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376869161] [2021-07-13 19:48:08,813 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376869161] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:48:08,813 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:48:08,813 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:48:08,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227722905] [2021-07-13 19:48:08,813 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:48:08,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:48:08,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:48:08,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:48:08,814 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) [2021-07-13 19:48:09,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:48:09,903 INFO L93 Difference]: Finished difference Result 6464 states and 22553 transitions. [2021-07-13 19:48:09,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-07-13 19:48:09,903 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 [2021-07-13 19:48:09,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:48:09,917 INFO L225 Difference]: With dead ends: 6464 [2021-07-13 19:48:09,917 INFO L226 Difference]: Without dead ends: 6365 [2021-07-13 19:48:09,918 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 731.3ms TimeCoverageRelationStatistics Valid=207, Invalid=1955, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 19:48:09,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6365 states. [2021-07-13 19:48:09,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6365 to 5948. [2021-07-13 19:48:10,002 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) [2021-07-13 19:48:10,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5948 states to 5948 states and 20889 transitions. [2021-07-13 19:48:10,016 INFO L78 Accepts]: Start accepts. Automaton has 5948 states and 20889 transitions. Word has length 47 [2021-07-13 19:48:10,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:48:10,016 INFO L482 AbstractCegarLoop]: Abstraction has 5948 states and 20889 transitions. [2021-07-13 19:48:10,016 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) [2021-07-13 19:48:10,016 INFO L276 IsEmpty]: Start isEmpty. Operand 5948 states and 20889 transitions. [2021-07-13 19:48:10,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:48:10,025 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:48:10,025 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] [2021-07-13 19:48:10,025 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-07-13 19:48:10,025 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:48:10,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:48:10,026 INFO L82 PathProgramCache]: Analyzing trace with hash 95979692, now seen corresponding path program 48 times [2021-07-13 19:48:10,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:48:10,026 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407591913] [2021-07-13 19:48:10,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:48:10,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:48:10,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:48:10,266 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:48:10,266 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407591913] [2021-07-13 19:48:10,266 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407591913] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:48:10,266 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:48:10,266 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:48:10,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997297614] [2021-07-13 19:48:10,267 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:48:10,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:48:10,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:48:10,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:48:10,267 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) [2021-07-13 19:48:11,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:48:11,342 INFO L93 Difference]: Finished difference Result 6385 states and 22344 transitions. [2021-07-13 19:48:11,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-07-13 19:48:11,342 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 [2021-07-13 19:48:11,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:48:11,356 INFO L225 Difference]: With dead ends: 6385 [2021-07-13 19:48:11,356 INFO L226 Difference]: Without dead ends: 6240 [2021-07-13 19:48:11,357 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 744.7ms TimeCoverageRelationStatistics Valid=192, Invalid=1788, Unknown=0, NotChecked=0, Total=1980 [2021-07-13 19:48:11,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6240 states. [2021-07-13 19:48:11,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6240 to 5960. [2021-07-13 19:48:11,446 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) [2021-07-13 19:48:11,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5960 states to 5960 states and 20919 transitions. [2021-07-13 19:48:11,459 INFO L78 Accepts]: Start accepts. Automaton has 5960 states and 20919 transitions. Word has length 47 [2021-07-13 19:48:11,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:48:11,459 INFO L482 AbstractCegarLoop]: Abstraction has 5960 states and 20919 transitions. [2021-07-13 19:48:11,460 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) [2021-07-13 19:48:11,460 INFO L276 IsEmpty]: Start isEmpty. Operand 5960 states and 20919 transitions. [2021-07-13 19:48:11,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:48:11,469 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:48:11,469 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] [2021-07-13 19:48:11,469 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-07-13 19:48:11,469 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:48:11,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:48:11,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1847473014, now seen corresponding path program 49 times [2021-07-13 19:48:11,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:48:11,470 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165581271] [2021-07-13 19:48:11,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:48:11,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:48:11,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:48:11,688 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:48:11,688 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165581271] [2021-07-13 19:48:11,688 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165581271] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:48:11,688 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:48:11,688 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:48:11,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952896723] [2021-07-13 19:48:11,688 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:48:11,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:48:11,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:48:11,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:48:11,689 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) [2021-07-13 19:48:12,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:48:12,858 INFO L93 Difference]: Finished difference Result 6406 states and 22348 transitions. [2021-07-13 19:48:12,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-07-13 19:48:12,859 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 [2021-07-13 19:48:12,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:48:12,872 INFO L225 Difference]: With dead ends: 6406 [2021-07-13 19:48:12,872 INFO L226 Difference]: Without dead ends: 6309 [2021-07-13 19:48:12,873 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 763.3ms TimeCoverageRelationStatistics Valid=201, Invalid=1961, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 19:48:12,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6309 states. [2021-07-13 19:48:12,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6309 to 5966. [2021-07-13 19:48:12,966 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) [2021-07-13 19:48:12,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5966 states to 5966 states and 20934 transitions. [2021-07-13 19:48:12,980 INFO L78 Accepts]: Start accepts. Automaton has 5966 states and 20934 transitions. Word has length 47 [2021-07-13 19:48:12,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:48:12,980 INFO L482 AbstractCegarLoop]: Abstraction has 5966 states and 20934 transitions. [2021-07-13 19:48:12,980 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) [2021-07-13 19:48:12,980 INFO L276 IsEmpty]: Start isEmpty. Operand 5966 states and 20934 transitions. [2021-07-13 19:48:12,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:48:12,989 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:48:12,989 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] [2021-07-13 19:48:12,989 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-07-13 19:48:12,989 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:48:12,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:48:12,990 INFO L82 PathProgramCache]: Analyzing trace with hash 722073772, now seen corresponding path program 50 times [2021-07-13 19:48:12,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:48:12,990 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087658344] [2021-07-13 19:48:12,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:48:12,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:48:13,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:48:13,202 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:48:13,202 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087658344] [2021-07-13 19:48:13,202 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087658344] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:48:13,202 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:48:13,202 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:48:13,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328004314] [2021-07-13 19:48:13,202 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:48:13,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:48:13,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:48:13,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:48:13,202 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) [2021-07-13 19:48:14,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:48:14,278 INFO L93 Difference]: Finished difference Result 6291 states and 21995 transitions. [2021-07-13 19:48:14,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-07-13 19:48:14,279 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 [2021-07-13 19:48:14,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:48:14,291 INFO L225 Difference]: With dead ends: 6291 [2021-07-13 19:48:14,291 INFO L226 Difference]: Without dead ends: 6170 [2021-07-13 19:48:14,292 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 675.3ms TimeCoverageRelationStatistics Valid=184, Invalid=1708, Unknown=0, NotChecked=0, Total=1892 [2021-07-13 19:48:14,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6170 states. [2021-07-13 19:48:14,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6170 to 5936. [2021-07-13 19:48:14,381 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) [2021-07-13 19:48:14,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5936 states to 5936 states and 20857 transitions. [2021-07-13 19:48:14,394 INFO L78 Accepts]: Start accepts. Automaton has 5936 states and 20857 transitions. Word has length 47 [2021-07-13 19:48:14,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:48:14,394 INFO L482 AbstractCegarLoop]: Abstraction has 5936 states and 20857 transitions. [2021-07-13 19:48:14,394 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) [2021-07-13 19:48:14,394 INFO L276 IsEmpty]: Start isEmpty. Operand 5936 states and 20857 transitions. [2021-07-13 19:48:14,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:48:14,403 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:48:14,403 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] [2021-07-13 19:48:14,403 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-07-13 19:48:14,403 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:48:14,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:48:14,404 INFO L82 PathProgramCache]: Analyzing trace with hash 768289678, now seen corresponding path program 51 times [2021-07-13 19:48:14,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:48:14,404 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387672290] [2021-07-13 19:48:14,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:48:14,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:48:14,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:48:14,601 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:48:14,601 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387672290] [2021-07-13 19:48:14,601 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387672290] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:48:14,601 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:48:14,601 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 19:48:14,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421254769] [2021-07-13 19:48:14,601 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 19:48:14,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:48:14,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 19:48:14,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-07-13 19:48:14,602 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) [2021-07-13 19:48:15,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:48:15,517 INFO L93 Difference]: Finished difference Result 6489 states and 22676 transitions. [2021-07-13 19:48:15,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-07-13 19:48:15,517 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 [2021-07-13 19:48:15,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:48:15,531 INFO L225 Difference]: With dead ends: 6489 [2021-07-13 19:48:15,531 INFO L226 Difference]: Without dead ends: 6352 [2021-07-13 19:48:15,531 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 584.9ms TimeCoverageRelationStatistics Valid=155, Invalid=1405, Unknown=0, NotChecked=0, Total=1560 [2021-07-13 19:48:15,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6352 states. [2021-07-13 19:48:15,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6352 to 5952. [2021-07-13 19:48:15,617 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) [2021-07-13 19:48:15,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5952 states to 5952 states and 20911 transitions. [2021-07-13 19:48:15,630 INFO L78 Accepts]: Start accepts. Automaton has 5952 states and 20911 transitions. Word has length 47 [2021-07-13 19:48:15,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:48:15,631 INFO L482 AbstractCegarLoop]: Abstraction has 5952 states and 20911 transitions. [2021-07-13 19:48:15,631 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) [2021-07-13 19:48:15,631 INFO L276 IsEmpty]: Start isEmpty. Operand 5952 states and 20911 transitions. [2021-07-13 19:48:15,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:48:15,640 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:48:15,640 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] [2021-07-13 19:48:15,640 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-07-13 19:48:15,640 INFO L430 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:48:15,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:48:15,640 INFO L82 PathProgramCache]: Analyzing trace with hash -40650930, now seen corresponding path program 52 times [2021-07-13 19:48:15,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:48:15,640 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091371250] [2021-07-13 19:48:15,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:48:15,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:48:15,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:48:15,894 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:48:15,894 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091371250] [2021-07-13 19:48:15,894 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091371250] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:48:15,894 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:48:15,894 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:48:15,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137296580] [2021-07-13 19:48:15,894 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:48:15,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:48:15,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:48:15,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:48:15,894 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) [2021-07-13 19:48:16,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:48:16,904 INFO L93 Difference]: Finished difference Result 6473 states and 22620 transitions. [2021-07-13 19:48:16,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-07-13 19:48:16,904 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 [2021-07-13 19:48:16,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:48:16,918 INFO L225 Difference]: With dead ends: 6473 [2021-07-13 19:48:16,918 INFO L226 Difference]: Without dead ends: 6328 [2021-07-13 19:48:16,918 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 692.6ms TimeCoverageRelationStatistics Valid=171, Invalid=1635, Unknown=0, NotChecked=0, Total=1806 [2021-07-13 19:48:16,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6328 states. [2021-07-13 19:48:16,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6328 to 6016. [2021-07-13 19:48:17,006 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) [2021-07-13 19:48:17,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6016 states to 6016 states and 21103 transitions. [2021-07-13 19:48:17,020 INFO L78 Accepts]: Start accepts. Automaton has 6016 states and 21103 transitions. Word has length 47 [2021-07-13 19:48:17,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:48:17,020 INFO L482 AbstractCegarLoop]: Abstraction has 6016 states and 21103 transitions. [2021-07-13 19:48:17,020 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) [2021-07-13 19:48:17,020 INFO L276 IsEmpty]: Start isEmpty. Operand 6016 states and 21103 transitions. [2021-07-13 19:48:17,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:48:17,029 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:48:17,029 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] [2021-07-13 19:48:17,030 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-07-13 19:48:17,030 INFO L430 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:48:17,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:48:17,030 INFO L82 PathProgramCache]: Analyzing trace with hash -314306290, now seen corresponding path program 53 times [2021-07-13 19:48:17,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:48:17,030 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021543541] [2021-07-13 19:48:17,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:48:17,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:48:17,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:48:17,232 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:48:17,232 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021543541] [2021-07-13 19:48:17,232 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021543541] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:48:17,232 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:48:17,232 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:48:17,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329293292] [2021-07-13 19:48:17,232 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:48:17,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:48:17,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:48:17,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:48:17,232 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) [2021-07-13 19:48:18,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:48:18,246 INFO L93 Difference]: Finished difference Result 6521 states and 22796 transitions. [2021-07-13 19:48:18,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-07-13 19:48:18,246 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 [2021-07-13 19:48:18,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:48:18,260 INFO L225 Difference]: With dead ends: 6521 [2021-07-13 19:48:18,260 INFO L226 Difference]: Without dead ends: 6272 [2021-07-13 19:48:18,260 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 669.7ms TimeCoverageRelationStatistics Valid=171, Invalid=1635, Unknown=0, NotChecked=0, Total=1806 [2021-07-13 19:48:18,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6272 states. [2021-07-13 19:48:18,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6272 to 5952. [2021-07-13 19:48:18,344 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) [2021-07-13 19:48:18,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5952 states to 5952 states and 20895 transitions. [2021-07-13 19:48:18,358 INFO L78 Accepts]: Start accepts. Automaton has 5952 states and 20895 transitions. Word has length 47 [2021-07-13 19:48:18,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:48:18,358 INFO L482 AbstractCegarLoop]: Abstraction has 5952 states and 20895 transitions. [2021-07-13 19:48:18,358 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) [2021-07-13 19:48:18,358 INFO L276 IsEmpty]: Start isEmpty. Operand 5952 states and 20895 transitions. [2021-07-13 19:48:18,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:48:18,367 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:48:18,368 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] [2021-07-13 19:48:18,368 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-07-13 19:48:18,368 INFO L430 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:48:18,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:48:18,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1421012972, now seen corresponding path program 54 times [2021-07-13 19:48:18,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:48:18,368 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608896373] [2021-07-13 19:48:18,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:48:18,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:48:18,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:48:18,605 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:48:18,605 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608896373] [2021-07-13 19:48:18,605 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608896373] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:48:18,605 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:48:18,605 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:48:18,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468041107] [2021-07-13 19:48:18,606 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:48:18,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:48:18,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:48:18,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:48:18,606 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) [2021-07-13 19:48:19,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:48:19,619 INFO L93 Difference]: Finished difference Result 6409 states and 22380 transitions. [2021-07-13 19:48:19,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-13 19:48:19,619 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 [2021-07-13 19:48:19,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:48:19,632 INFO L225 Difference]: With dead ends: 6409 [2021-07-13 19:48:19,632 INFO L226 Difference]: Without dead ends: 6272 [2021-07-13 19:48:19,632 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 675.8ms TimeCoverageRelationStatistics Valid=164, Invalid=1558, Unknown=0, NotChecked=0, Total=1722 [2021-07-13 19:48:19,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6272 states. [2021-07-13 19:48:19,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6272 to 5970. [2021-07-13 19:48:19,713 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) [2021-07-13 19:48:19,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5970 states to 5970 states and 20940 transitions. [2021-07-13 19:48:19,727 INFO L78 Accepts]: Start accepts. Automaton has 5970 states and 20940 transitions. Word has length 47 [2021-07-13 19:48:19,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:48:19,727 INFO L482 AbstractCegarLoop]: Abstraction has 5970 states and 20940 transitions. [2021-07-13 19:48:19,727 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:48:19,727 INFO L276 IsEmpty]: Start isEmpty. Operand 5970 states and 20940 transitions. [2021-07-13 19:48:19,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:48:19,736 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:48:19,736 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] [2021-07-13 19:48:19,736 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-07-13 19:48:19,736 INFO L430 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:48:19,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:48:19,737 INFO L82 PathProgramCache]: Analyzing trace with hash 612072364, now seen corresponding path program 55 times [2021-07-13 19:48:19,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:48:19,737 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079013919] [2021-07-13 19:48:19,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:48:19,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:48:19,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:48:19,954 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:48:19,954 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079013919] [2021-07-13 19:48:19,954 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079013919] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:48:19,954 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:48:19,954 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:48:19,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532650591] [2021-07-13 19:48:19,955 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:48:19,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:48:19,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:48:19,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:48:19,955 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) [2021-07-13 19:48:21,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:48:21,047 INFO L93 Difference]: Finished difference Result 6393 states and 22312 transitions. [2021-07-13 19:48:21,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-07-13 19:48:21,048 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 [2021-07-13 19:48:21,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:48:21,061 INFO L225 Difference]: With dead ends: 6393 [2021-07-13 19:48:21,061 INFO L226 Difference]: Without dead ends: 6248 [2021-07-13 19:48:21,061 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 703.6ms TimeCoverageRelationStatistics Valid=181, Invalid=1799, Unknown=0, NotChecked=0, Total=1980 [2021-07-13 19:48:21,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6248 states. [2021-07-13 19:48:21,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6248 to 5970. [2021-07-13 19:48:21,148 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) [2021-07-13 19:48:21,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5970 states to 5970 states and 20934 transitions. [2021-07-13 19:48:21,160 INFO L78 Accepts]: Start accepts. Automaton has 5970 states and 20934 transitions. Word has length 47 [2021-07-13 19:48:21,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:48:21,160 INFO L482 AbstractCegarLoop]: Abstraction has 5970 states and 20934 transitions. [2021-07-13 19:48:21,161 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) [2021-07-13 19:48:21,161 INFO L276 IsEmpty]: Start isEmpty. Operand 5970 states and 20934 transitions. [2021-07-13 19:48:21,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:48:21,169 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:48:21,169 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] [2021-07-13 19:48:21,169 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-07-13 19:48:21,169 INFO L430 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:48:21,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:48:21,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1511968142, now seen corresponding path program 56 times [2021-07-13 19:48:21,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:48:21,170 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996181528] [2021-07-13 19:48:21,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:48:21,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:48:21,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:48:21,419 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:48:21,419 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996181528] [2021-07-13 19:48:21,419 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996181528] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:48:21,419 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:48:21,419 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:48:21,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472885122] [2021-07-13 19:48:21,419 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:48:21,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:48:21,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:48:21,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:48:21,420 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) [2021-07-13 19:48:24,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:48:24,816 INFO L93 Difference]: Finished difference Result 11008 states and 39096 transitions. [2021-07-13 19:48:24,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-07-13 19:48:24,817 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 [2021-07-13 19:48:24,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:48:24,841 INFO L225 Difference]: With dead ends: 11008 [2021-07-13 19:48:24,841 INFO L226 Difference]: Without dead ends: 10871 [2021-07-13 19:48:24,842 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2066 ImplicationChecksByTransitivity, 1947.9ms TimeCoverageRelationStatistics Valid=609, Invalid=6363, Unknown=0, NotChecked=0, Total=6972 [2021-07-13 19:48:24,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10871 states. [2021-07-13 19:48:24,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10871 to 6020. [2021-07-13 19:48:24,962 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) [2021-07-13 19:48:24,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6020 states to 6020 states and 21110 transitions. [2021-07-13 19:48:24,975 INFO L78 Accepts]: Start accepts. Automaton has 6020 states and 21110 transitions. Word has length 47 [2021-07-13 19:48:24,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:48:24,975 INFO L482 AbstractCegarLoop]: Abstraction has 6020 states and 21110 transitions. [2021-07-13 19:48:24,976 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) [2021-07-13 19:48:24,976 INFO L276 IsEmpty]: Start isEmpty. Operand 6020 states and 21110 transitions. [2021-07-13 19:48:24,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:48:24,985 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:48:24,985 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] [2021-07-13 19:48:24,985 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-07-13 19:48:24,985 INFO L430 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:48:24,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:48:24,985 INFO L82 PathProgramCache]: Analyzing trace with hash 661316234, now seen corresponding path program 57 times [2021-07-13 19:48:24,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:48:24,985 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782466313] [2021-07-13 19:48:24,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:48:24,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:48:25,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:48:25,205 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:48:25,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782466313] [2021-07-13 19:48:25,205 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782466313] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:48:25,205 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:48:25,205 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:48:25,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884137622] [2021-07-13 19:48:25,205 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:48:25,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:48:25,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:48:25,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:48:25,205 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) [2021-07-13 19:48:28,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:48:28,524 INFO L93 Difference]: Finished difference Result 11027 states and 39284 transitions. [2021-07-13 19:48:28,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-07-13 19:48:28,524 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 [2021-07-13 19:48:28,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:48:28,549 INFO L225 Difference]: With dead ends: 11027 [2021-07-13 19:48:28,549 INFO L226 Difference]: Without dead ends: 10920 [2021-07-13 19:48:28,549 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1945 ImplicationChecksByTransitivity, 1845.0ms TimeCoverageRelationStatistics Valid=568, Invalid=6074, Unknown=0, NotChecked=0, Total=6642 [2021-07-13 19:48:28,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10920 states. [2021-07-13 19:48:28,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10920 to 5998. [2021-07-13 19:48:28,661 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) [2021-07-13 19:48:28,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5998 states to 5998 states and 21051 transitions. [2021-07-13 19:48:28,674 INFO L78 Accepts]: Start accepts. Automaton has 5998 states and 21051 transitions. Word has length 47 [2021-07-13 19:48:28,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:48:28,674 INFO L482 AbstractCegarLoop]: Abstraction has 5998 states and 21051 transitions. [2021-07-13 19:48:28,674 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) [2021-07-13 19:48:28,674 INFO L276 IsEmpty]: Start isEmpty. Operand 5998 states and 21051 transitions. [2021-07-13 19:48:28,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:48:28,683 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:48:28,683 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] [2021-07-13 19:48:28,683 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-07-13 19:48:28,684 INFO L430 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:48:28,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:48:28,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1953049616, now seen corresponding path program 58 times [2021-07-13 19:48:28,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:48:28,684 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621646492] [2021-07-13 19:48:28,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:48:28,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:48:28,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:48:28,904 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:48:28,904 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621646492] [2021-07-13 19:48:28,904 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621646492] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:48:28,904 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:48:28,905 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:48:28,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474897210] [2021-07-13 19:48:28,905 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:48:28,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:48:28,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:48:28,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:48:28,905 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) [2021-07-13 19:48:30,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:48:30,136 INFO L93 Difference]: Finished difference Result 6601 states and 22970 transitions. [2021-07-13 19:48:30,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-07-13 19:48:30,137 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 [2021-07-13 19:48:30,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:48:30,150 INFO L225 Difference]: With dead ends: 6601 [2021-07-13 19:48:30,150 INFO L226 Difference]: Without dead ends: 6480 [2021-07-13 19:48:30,150 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 791.7ms TimeCoverageRelationStatistics Valid=210, Invalid=2142, Unknown=0, NotChecked=0, Total=2352 [2021-07-13 19:48:30,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6480 states. [2021-07-13 19:48:30,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6480 to 6004. [2021-07-13 19:48:30,233 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) [2021-07-13 19:48:30,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6004 states to 6004 states and 21064 transitions. [2021-07-13 19:48:30,246 INFO L78 Accepts]: Start accepts. Automaton has 6004 states and 21064 transitions. Word has length 47 [2021-07-13 19:48:30,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:48:30,246 INFO L482 AbstractCegarLoop]: Abstraction has 6004 states and 21064 transitions. [2021-07-13 19:48:30,246 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) [2021-07-13 19:48:30,246 INFO L276 IsEmpty]: Start isEmpty. Operand 6004 states and 21064 transitions. [2021-07-13 19:48:30,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:48:30,254 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:48:30,255 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] [2021-07-13 19:48:30,255 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-07-13 19:48:30,255 INFO L430 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:48:30,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:48:30,255 INFO L82 PathProgramCache]: Analyzing trace with hash -381628180, now seen corresponding path program 59 times [2021-07-13 19:48:30,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:48:30,255 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085078865] [2021-07-13 19:48:30,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:48:30,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:48:30,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:48:30,494 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:48:30,494 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085078865] [2021-07-13 19:48:30,494 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085078865] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:48:30,494 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:48:30,494 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:48:30,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515673554] [2021-07-13 19:48:30,494 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:48:30,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:48:30,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:48:30,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:48:30,495 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) [2021-07-13 19:48:32,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:48:32,232 INFO L93 Difference]: Finished difference Result 7445 states and 26088 transitions. [2021-07-13 19:48:32,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-07-13 19:48:32,232 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 [2021-07-13 19:48:32,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:48:32,248 INFO L225 Difference]: With dead ends: 7445 [2021-07-13 19:48:32,248 INFO L226 Difference]: Without dead ends: 7201 [2021-07-13 19:48:32,248 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 1006.3ms TimeCoverageRelationStatistics Valid=258, Invalid=2822, Unknown=0, NotChecked=0, Total=3080 [2021-07-13 19:48:32,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7201 states. [2021-07-13 19:48:32,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7201 to 6072. [2021-07-13 19:48:32,340 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) [2021-07-13 19:48:32,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6072 states to 6072 states and 21288 transitions. [2021-07-13 19:48:32,354 INFO L78 Accepts]: Start accepts. Automaton has 6072 states and 21288 transitions. Word has length 47 [2021-07-13 19:48:32,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:48:32,355 INFO L482 AbstractCegarLoop]: Abstraction has 6072 states and 21288 transitions. [2021-07-13 19:48:32,355 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) [2021-07-13 19:48:32,355 INFO L276 IsEmpty]: Start isEmpty. Operand 6072 states and 21288 transitions. [2021-07-13 19:48:32,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:48:32,365 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:48:32,365 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] [2021-07-13 19:48:32,365 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-07-13 19:48:32,365 INFO L430 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:48:32,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:48:32,365 INFO L82 PathProgramCache]: Analyzing trace with hash -82736502, now seen corresponding path program 60 times [2021-07-13 19:48:32,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:48:32,365 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962640631] [2021-07-13 19:48:32,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:48:32,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:48:32,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:48:32,592 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:48:32,592 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962640631] [2021-07-13 19:48:32,592 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962640631] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:48:32,592 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:48:32,592 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:48:32,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117987962] [2021-07-13 19:48:32,592 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:48:32,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:48:32,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:48:32,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:48:32,593 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) [2021-07-13 19:48:33,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:48:33,827 INFO L93 Difference]: Finished difference Result 6570 states and 22873 transitions. [2021-07-13 19:48:33,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-07-13 19:48:33,827 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 [2021-07-13 19:48:33,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:48:33,841 INFO L225 Difference]: With dead ends: 6570 [2021-07-13 19:48:33,841 INFO L226 Difference]: Without dead ends: 6473 [2021-07-13 19:48:33,841 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 781.9ms TimeCoverageRelationStatistics Valid=193, Invalid=1969, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 19:48:33,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6473 states. [2021-07-13 19:48:33,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6473 to 6086. [2021-07-13 19:48:33,929 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) [2021-07-13 19:48:33,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6086 states to 6086 states and 21315 transitions. [2021-07-13 19:48:33,944 INFO L78 Accepts]: Start accepts. Automaton has 6086 states and 21315 transitions. Word has length 47 [2021-07-13 19:48:33,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:48:33,944 INFO L482 AbstractCegarLoop]: Abstraction has 6086 states and 21315 transitions. [2021-07-13 19:48:33,944 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) [2021-07-13 19:48:33,944 INFO L276 IsEmpty]: Start isEmpty. Operand 6086 states and 21315 transitions. [2021-07-13 19:48:33,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:48:33,953 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:48:33,954 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] [2021-07-13 19:48:33,954 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-07-13 19:48:33,954 INFO L430 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:48:33,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:48:33,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1808157012, now seen corresponding path program 61 times [2021-07-13 19:48:33,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:48:33,954 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240817220] [2021-07-13 19:48:33,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:48:33,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:48:34,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:48:34,187 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:48:34,187 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240817220] [2021-07-13 19:48:34,187 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240817220] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:48:34,187 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:48:34,187 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:48:34,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886765886] [2021-07-13 19:48:34,188 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:48:34,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:48:34,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:48:34,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:48:34,188 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) [2021-07-13 19:48:35,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:48:35,259 INFO L93 Difference]: Finished difference Result 6455 states and 22520 transitions. [2021-07-13 19:48:35,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-07-13 19:48:35,259 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 [2021-07-13 19:48:35,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:48:35,273 INFO L225 Difference]: With dead ends: 6455 [2021-07-13 19:48:35,273 INFO L226 Difference]: Without dead ends: 6350 [2021-07-13 19:48:35,274 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 695.6ms TimeCoverageRelationStatistics Valid=178, Invalid=1802, Unknown=0, NotChecked=0, Total=1980 [2021-07-13 19:48:35,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6350 states. [2021-07-13 19:48:35,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6350 to 6072. [2021-07-13 19:48:35,387 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) [2021-07-13 19:48:35,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6072 states to 6072 states and 21282 transitions. [2021-07-13 19:48:35,401 INFO L78 Accepts]: Start accepts. Automaton has 6072 states and 21282 transitions. Word has length 47 [2021-07-13 19:48:35,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:48:35,401 INFO L482 AbstractCegarLoop]: Abstraction has 6072 states and 21282 transitions. [2021-07-13 19:48:35,401 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) [2021-07-13 19:48:35,401 INFO L276 IsEmpty]: Start isEmpty. Operand 6072 states and 21282 transitions. [2021-07-13 19:48:35,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:48:35,410 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:48:35,410 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] [2021-07-13 19:48:35,410 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-07-13 19:48:35,411 INFO L430 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:48:35,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:48:35,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1732214588, now seen corresponding path program 62 times [2021-07-13 19:48:35,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:48:35,411 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847814488] [2021-07-13 19:48:35,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:48:35,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:48:35,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:48:35,641 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:48:35,641 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847814488] [2021-07-13 19:48:35,641 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847814488] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:48:35,641 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:48:35,641 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:48:35,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605968228] [2021-07-13 19:48:35,641 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:48:35,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:48:35,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:48:35,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:48:35,641 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) [2021-07-13 19:48:36,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:48:36,813 INFO L93 Difference]: Finished difference Result 6712 states and 23400 transitions. [2021-07-13 19:48:36,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-07-13 19:48:36,813 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 [2021-07-13 19:48:36,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:48:36,827 INFO L225 Difference]: With dead ends: 6712 [2021-07-13 19:48:36,827 INFO L226 Difference]: Without dead ends: 6527 [2021-07-13 19:48:36,828 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 776.1ms TimeCoverageRelationStatistics Valid=207, Invalid=2049, Unknown=0, NotChecked=0, Total=2256 [2021-07-13 19:48:36,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6527 states. [2021-07-13 19:48:36,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6527 to 6076. [2021-07-13 19:48:36,920 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) [2021-07-13 19:48:36,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6076 states to 6076 states and 21292 transitions. [2021-07-13 19:48:36,934 INFO L78 Accepts]: Start accepts. Automaton has 6076 states and 21292 transitions. Word has length 47 [2021-07-13 19:48:36,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:48:36,934 INFO L482 AbstractCegarLoop]: Abstraction has 6076 states and 21292 transitions. [2021-07-13 19:48:36,934 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) [2021-07-13 19:48:36,934 INFO L276 IsEmpty]: Start isEmpty. Operand 6076 states and 21292 transitions. [2021-07-13 19:48:36,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:48:36,943 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:48:36,944 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] [2021-07-13 19:48:36,944 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-07-13 19:48:36,944 INFO L430 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:48:36,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:48:36,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1614722846, now seen corresponding path program 63 times [2021-07-13 19:48:36,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:48:36,944 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500495863] [2021-07-13 19:48:36,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:48:36,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:48:37,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:48:37,218 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:48:37,218 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500495863] [2021-07-13 19:48:37,218 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500495863] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:48:37,218 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:48:37,218 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:48:37,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560458295] [2021-07-13 19:48:37,218 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:48:37,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:48:37,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:48:37,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:48:37,219 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) [2021-07-13 19:48:38,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:48:38,418 INFO L93 Difference]: Finished difference Result 6804 states and 23603 transitions. [2021-07-13 19:48:38,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-07-13 19:48:38,418 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 [2021-07-13 19:48:38,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:48:38,432 INFO L225 Difference]: With dead ends: 6804 [2021-07-13 19:48:38,432 INFO L226 Difference]: Without dead ends: 6667 [2021-07-13 19:48:38,433 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 844.4ms TimeCoverageRelationStatistics Valid=211, Invalid=2045, Unknown=0, NotChecked=0, Total=2256 [2021-07-13 19:48:38,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6667 states. [2021-07-13 19:48:38,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6667 to 6082. [2021-07-13 19:48:38,523 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) [2021-07-13 19:48:38,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6082 states to 6082 states and 21305 transitions. [2021-07-13 19:48:38,537 INFO L78 Accepts]: Start accepts. Automaton has 6082 states and 21305 transitions. Word has length 47 [2021-07-13 19:48:38,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:48:38,537 INFO L482 AbstractCegarLoop]: Abstraction has 6082 states and 21305 transitions. [2021-07-13 19:48:38,537 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) [2021-07-13 19:48:38,537 INFO L276 IsEmpty]: Start isEmpty. Operand 6082 states and 21305 transitions. [2021-07-13 19:48:38,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:48:38,546 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:48:38,546 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] [2021-07-13 19:48:38,546 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-07-13 19:48:38,546 INFO L430 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:48:38,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:48:38,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1108823014, now seen corresponding path program 64 times [2021-07-13 19:48:38,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:48:38,547 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779210347] [2021-07-13 19:48:38,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:48:38,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:48:38,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:48:38,767 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:48:38,767 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779210347] [2021-07-13 19:48:38,767 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779210347] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:48:38,767 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:48:38,767 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:48:38,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503685079] [2021-07-13 19:48:38,767 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:48:38,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:48:38,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:48:38,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:48:38,767 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) [2021-07-13 19:48:41,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:48:41,351 INFO L93 Difference]: Finished difference Result 11009 states and 38579 transitions. [2021-07-13 19:48:41,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-07-13 19:48:41,351 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 [2021-07-13 19:48:41,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:48:41,375 INFO L225 Difference]: With dead ends: 11009 [2021-07-13 19:48:41,376 INFO L226 Difference]: Without dead ends: 10769 [2021-07-13 19:48:41,376 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1304 ImplicationChecksByTransitivity, 1304.1ms TimeCoverageRelationStatistics Valid=381, Invalid=4449, Unknown=0, NotChecked=0, Total=4830 [2021-07-13 19:48:41,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10769 states. [2021-07-13 19:48:41,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10769 to 6106. [2021-07-13 19:48:41,490 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) [2021-07-13 19:48:41,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6106 states to 6106 states and 21373 transitions. [2021-07-13 19:48:41,503 INFO L78 Accepts]: Start accepts. Automaton has 6106 states and 21373 transitions. Word has length 47 [2021-07-13 19:48:41,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:48:41,503 INFO L482 AbstractCegarLoop]: Abstraction has 6106 states and 21373 transitions. [2021-07-13 19:48:41,504 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) [2021-07-13 19:48:41,504 INFO L276 IsEmpty]: Start isEmpty. Operand 6106 states and 21373 transitions. [2021-07-13 19:48:41,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:48:41,513 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:48:41,513 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] [2021-07-13 19:48:41,513 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-07-13 19:48:41,513 INFO L430 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:48:41,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:48:41,514 INFO L82 PathProgramCache]: Analyzing trace with hash -809931336, now seen corresponding path program 65 times [2021-07-13 19:48:41,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:48:41,514 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819695489] [2021-07-13 19:48:41,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:48:41,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:48:41,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:48:41,743 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:48:41,743 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819695489] [2021-07-13 19:48:41,743 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819695489] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:48:41,743 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:48:41,743 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:48:41,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587364595] [2021-07-13 19:48:41,743 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:48:41,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:48:41,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:48:41,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:48:41,743 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) [2021-07-13 19:48:42,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:48:42,927 INFO L93 Difference]: Finished difference Result 6731 states and 23367 transitions. [2021-07-13 19:48:42,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-07-13 19:48:42,927 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 [2021-07-13 19:48:42,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:48:42,941 INFO L225 Difference]: With dead ends: 6731 [2021-07-13 19:48:42,942 INFO L226 Difference]: Without dead ends: 6634 [2021-07-13 19:48:42,942 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 778.5ms TimeCoverageRelationStatistics Valid=202, Invalid=1960, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 19:48:42,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6634 states. [2021-07-13 19:48:43,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6634 to 6114. [2021-07-13 19:48:43,060 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) [2021-07-13 19:48:43,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6114 states to 6114 states and 21391 transitions. [2021-07-13 19:48:43,073 INFO L78 Accepts]: Start accepts. Automaton has 6114 states and 21391 transitions. Word has length 47 [2021-07-13 19:48:43,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:48:43,074 INFO L482 AbstractCegarLoop]: Abstraction has 6114 states and 21391 transitions. [2021-07-13 19:48:43,074 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) [2021-07-13 19:48:43,074 INFO L276 IsEmpty]: Start isEmpty. Operand 6114 states and 21391 transitions. [2021-07-13 19:48:43,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:48:43,083 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:48:43,083 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] [2021-07-13 19:48:43,083 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-07-13 19:48:43,083 INFO L430 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:48:43,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:48:43,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1759615450, now seen corresponding path program 66 times [2021-07-13 19:48:43,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:48:43,084 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115881243] [2021-07-13 19:48:43,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:48:43,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:48:43,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:48:43,326 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:48:43,326 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115881243] [2021-07-13 19:48:43,326 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115881243] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:48:43,326 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:48:43,326 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:48:43,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101013826] [2021-07-13 19:48:43,326 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:48:43,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:48:43,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:48:43,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:48:43,326 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) [2021-07-13 19:48:44,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:48:44,323 INFO L93 Difference]: Finished difference Result 6616 states and 23014 transitions. [2021-07-13 19:48:44,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-07-13 19:48:44,324 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 [2021-07-13 19:48:44,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:48:44,338 INFO L225 Difference]: With dead ends: 6616 [2021-07-13 19:48:44,338 INFO L226 Difference]: Without dead ends: 6517 [2021-07-13 19:48:44,338 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 676.8ms TimeCoverageRelationStatistics Valid=172, Invalid=1634, Unknown=0, NotChecked=0, Total=1806 [2021-07-13 19:48:44,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6517 states. [2021-07-13 19:48:44,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6517 to 6106. [2021-07-13 19:48:44,433 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) [2021-07-13 19:48:44,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6106 states to 6106 states and 21371 transitions. [2021-07-13 19:48:44,447 INFO L78 Accepts]: Start accepts. Automaton has 6106 states and 21371 transitions. Word has length 47 [2021-07-13 19:48:44,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:48:44,447 INFO L482 AbstractCegarLoop]: Abstraction has 6106 states and 21371 transitions. [2021-07-13 19:48:44,447 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) [2021-07-13 19:48:44,447 INFO L276 IsEmpty]: Start isEmpty. Operand 6106 states and 21371 transitions. [2021-07-13 19:48:44,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:48:44,457 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:48:44,457 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] [2021-07-13 19:48:44,457 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-07-13 19:48:44,457 INFO L430 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:48:44,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:48:44,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1459607282, now seen corresponding path program 67 times [2021-07-13 19:48:44,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:48:44,458 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871921292] [2021-07-13 19:48:44,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:48:44,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:48:44,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:48:44,660 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:48:44,660 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871921292] [2021-07-13 19:48:44,660 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871921292] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:48:44,660 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:48:44,660 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:48:44,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68115306] [2021-07-13 19:48:44,661 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:48:44,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:48:44,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:48:44,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:48:44,661 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) [2021-07-13 19:48:45,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:48:45,675 INFO L93 Difference]: Finished difference Result 6537 states and 22805 transitions. [2021-07-13 19:48:45,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-07-13 19:48:45,675 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 [2021-07-13 19:48:45,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:48:45,689 INFO L225 Difference]: With dead ends: 6537 [2021-07-13 19:48:45,690 INFO L226 Difference]: Without dead ends: 6392 [2021-07-13 19:48:45,690 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 636.9ms TimeCoverageRelationStatistics Valid=169, Invalid=1553, Unknown=0, NotChecked=0, Total=1722 [2021-07-13 19:48:45,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6392 states. [2021-07-13 19:48:45,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6392 to 6118. [2021-07-13 19:48:45,778 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) [2021-07-13 19:48:45,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6118 states to 6118 states and 21401 transitions. [2021-07-13 19:48:45,793 INFO L78 Accepts]: Start accepts. Automaton has 6118 states and 21401 transitions. Word has length 47 [2021-07-13 19:48:45,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:48:45,793 INFO L482 AbstractCegarLoop]: Abstraction has 6118 states and 21401 transitions. [2021-07-13 19:48:45,793 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) [2021-07-13 19:48:45,793 INFO L276 IsEmpty]: Start isEmpty. Operand 6118 states and 21401 transitions. [2021-07-13 19:48:45,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:48:45,803 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:48:45,803 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] [2021-07-13 19:48:45,803 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-07-13 19:48:45,803 INFO L430 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:48:45,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:48:45,803 INFO L82 PathProgramCache]: Analyzing trace with hash 891907308, now seen corresponding path program 68 times [2021-07-13 19:48:45,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:48:45,803 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628417563] [2021-07-13 19:48:45,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:48:45,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:48:46,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:48:46,020 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:48:46,020 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628417563] [2021-07-13 19:48:46,020 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628417563] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:48:46,020 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:48:46,020 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:48:46,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809800535] [2021-07-13 19:48:46,020 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:48:46,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:48:46,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:48:46,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:48:46,020 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) [2021-07-13 19:48:47,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:48:47,104 INFO L93 Difference]: Finished difference Result 6558 states and 22809 transitions. [2021-07-13 19:48:47,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-07-13 19:48:47,104 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 [2021-07-13 19:48:47,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:48:47,118 INFO L225 Difference]: With dead ends: 6558 [2021-07-13 19:48:47,118 INFO L226 Difference]: Without dead ends: 6461 [2021-07-13 19:48:47,118 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 687.8ms TimeCoverageRelationStatistics Valid=177, Invalid=1715, Unknown=0, NotChecked=0, Total=1892 [2021-07-13 19:48:47,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6461 states. [2021-07-13 19:48:47,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6461 to 6124. [2021-07-13 19:48:47,205 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) [2021-07-13 19:48:47,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6124 states to 6124 states and 21416 transitions. [2021-07-13 19:48:47,219 INFO L78 Accepts]: Start accepts. Automaton has 6124 states and 21416 transitions. Word has length 47 [2021-07-13 19:48:47,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:48:47,219 INFO L482 AbstractCegarLoop]: Abstraction has 6124 states and 21416 transitions. [2021-07-13 19:48:47,219 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) [2021-07-13 19:48:47,219 INFO L276 IsEmpty]: Start isEmpty. Operand 6124 states and 21416 transitions. [2021-07-13 19:48:47,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:48:47,229 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:48:47,229 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] [2021-07-13 19:48:47,229 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-07-13 19:48:47,229 INFO L430 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:48:47,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:48:47,229 INFO L82 PathProgramCache]: Analyzing trace with hash -833513202, now seen corresponding path program 69 times [2021-07-13 19:48:47,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:48:47,229 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166512922] [2021-07-13 19:48:47,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:48:47,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:48:47,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:48:47,453 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:48:47,453 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166512922] [2021-07-13 19:48:47,453 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166512922] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:48:47,453 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:48:47,453 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:48:47,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098603876] [2021-07-13 19:48:47,453 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:48:47,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:48:47,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:48:47,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:48:47,454 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) [2021-07-13 19:48:48,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:48:48,425 INFO L93 Difference]: Finished difference Result 6443 states and 22456 transitions. [2021-07-13 19:48:48,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-07-13 19:48:48,425 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 [2021-07-13 19:48:48,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:48:48,440 INFO L225 Difference]: With dead ends: 6443 [2021-07-13 19:48:48,440 INFO L226 Difference]: Without dead ends: 6282 [2021-07-13 19:48:48,440 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 629.4ms TimeCoverageRelationStatistics Valid=158, Invalid=1482, Unknown=0, NotChecked=0, Total=1640 [2021-07-13 19:48:48,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6282 states. [2021-07-13 19:48:48,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6282 to 6054. [2021-07-13 19:48:48,560 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) [2021-07-13 19:48:48,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6054 states to 6054 states and 21235 transitions. [2021-07-13 19:48:48,574 INFO L78 Accepts]: Start accepts. Automaton has 6054 states and 21235 transitions. Word has length 47 [2021-07-13 19:48:48,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:48:48,574 INFO L482 AbstractCegarLoop]: Abstraction has 6054 states and 21235 transitions. [2021-07-13 19:48:48,574 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) [2021-07-13 19:48:48,574 INFO L276 IsEmpty]: Start isEmpty. Operand 6054 states and 21235 transitions. [2021-07-13 19:48:48,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:48:48,583 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:48:48,583 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] [2021-07-13 19:48:48,583 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-07-13 19:48:48,584 INFO L430 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:48:48,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:48:48,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1839356320, now seen corresponding path program 70 times [2021-07-13 19:48:48,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:48:48,584 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476213441] [2021-07-13 19:48:48,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:48:48,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:48:48,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:48:48,790 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:48:48,790 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476213441] [2021-07-13 19:48:48,790 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476213441] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:48:48,790 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:48:48,790 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 19:48:48,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215081659] [2021-07-13 19:48:48,790 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 19:48:48,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:48:48,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 19:48:48,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-07-13 19:48:48,791 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) [2021-07-13 19:48:49,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:48:49,738 INFO L93 Difference]: Finished difference Result 6791 states and 23680 transitions. [2021-07-13 19:48:49,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-07-13 19:48:49,738 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 [2021-07-13 19:48:49,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:48:49,752 INFO L225 Difference]: With dead ends: 6791 [2021-07-13 19:48:49,752 INFO L226 Difference]: Without dead ends: 6654 [2021-07-13 19:48:49,753 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 621.6ms TimeCoverageRelationStatistics Valid=165, Invalid=1475, Unknown=0, NotChecked=0, Total=1640 [2021-07-13 19:48:49,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6654 states. [2021-07-13 19:48:49,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6654 to 6074. [2021-07-13 19:48:49,841 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) [2021-07-13 19:48:49,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6074 states to 6074 states and 21301 transitions. [2021-07-13 19:48:49,855 INFO L78 Accepts]: Start accepts. Automaton has 6074 states and 21301 transitions. Word has length 47 [2021-07-13 19:48:49,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:48:49,855 INFO L482 AbstractCegarLoop]: Abstraction has 6074 states and 21301 transitions. [2021-07-13 19:48:49,855 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) [2021-07-13 19:48:49,855 INFO L276 IsEmpty]: Start isEmpty. Operand 6074 states and 21301 transitions. [2021-07-13 19:48:49,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:48:49,864 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:48:49,864 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] [2021-07-13 19:48:49,864 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-07-13 19:48:49,864 INFO L430 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:48:49,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:48:49,865 INFO L82 PathProgramCache]: Analyzing trace with hash -937914754, now seen corresponding path program 71 times [2021-07-13 19:48:49,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:48:49,865 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258361729] [2021-07-13 19:48:49,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:48:49,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:48:50,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:48:50,061 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:48:50,061 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258361729] [2021-07-13 19:48:50,061 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258361729] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:48:50,061 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:48:50,061 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:48:50,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229209749] [2021-07-13 19:48:50,062 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:48:50,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:48:50,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:48:50,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:48:50,062 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) [2021-07-13 19:48:51,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:48:51,146 INFO L93 Difference]: Finished difference Result 6850 states and 23839 transitions. [2021-07-13 19:48:51,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-07-13 19:48:51,146 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 [2021-07-13 19:48:51,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:48:51,161 INFO L225 Difference]: With dead ends: 6850 [2021-07-13 19:48:51,161 INFO L226 Difference]: Without dead ends: 6761 [2021-07-13 19:48:51,162 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 690.4ms TimeCoverageRelationStatistics Valid=183, Invalid=1709, Unknown=0, NotChecked=0, Total=1892 [2021-07-13 19:48:51,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6761 states. [2021-07-13 19:48:51,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6761 to 6170. [2021-07-13 19:48:51,250 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) [2021-07-13 19:48:51,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6170 states to 6170 states and 21597 transitions. [2021-07-13 19:48:51,264 INFO L78 Accepts]: Start accepts. Automaton has 6170 states and 21597 transitions. Word has length 47 [2021-07-13 19:48:51,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:48:51,264 INFO L482 AbstractCegarLoop]: Abstraction has 6170 states and 21597 transitions. [2021-07-13 19:48:51,264 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) [2021-07-13 19:48:51,264 INFO L276 IsEmpty]: Start isEmpty. Operand 6170 states and 21597 transitions. [2021-07-13 19:48:51,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:48:51,274 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:48:51,274 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] [2021-07-13 19:48:51,274 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-07-13 19:48:51,274 INFO L430 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:48:51,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:48:51,274 INFO L82 PathProgramCache]: Analyzing trace with hash -503885408, now seen corresponding path program 72 times [2021-07-13 19:48:51,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:48:51,274 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71644168] [2021-07-13 19:48:51,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:48:51,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:48:51,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:48:51,468 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:48:51,468 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71644168] [2021-07-13 19:48:51,468 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71644168] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:48:51,468 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:48:51,468 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:48:51,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658815131] [2021-07-13 19:48:51,468 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:48:51,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:48:51,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:48:51,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:48:51,469 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) [2021-07-13 19:48:52,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:48:52,632 INFO L93 Difference]: Finished difference Result 6839 states and 23808 transitions. [2021-07-13 19:48:52,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-07-13 19:48:52,632 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 [2021-07-13 19:48:52,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:48:52,646 INFO L225 Difference]: With dead ends: 6839 [2021-07-13 19:48:52,647 INFO L226 Difference]: Without dead ends: 6614 [2021-07-13 19:48:52,647 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 723.4ms TimeCoverageRelationStatistics Valid=183, Invalid=1797, Unknown=0, NotChecked=0, Total=1980 [2021-07-13 19:48:52,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6614 states. [2021-07-13 19:48:52,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6614 to 6144. [2021-07-13 19:48:52,734 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) [2021-07-13 19:48:52,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6144 states to 6144 states and 21508 transitions. [2021-07-13 19:48:52,748 INFO L78 Accepts]: Start accepts. Automaton has 6144 states and 21508 transitions. Word has length 47 [2021-07-13 19:48:52,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:48:52,748 INFO L482 AbstractCegarLoop]: Abstraction has 6144 states and 21508 transitions. [2021-07-13 19:48:52,748 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) [2021-07-13 19:48:52,748 INFO L276 IsEmpty]: Start isEmpty. Operand 6144 states and 21508 transitions. [2021-07-13 19:48:52,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:48:52,758 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:48:52,758 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] [2021-07-13 19:48:52,758 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-07-13 19:48:52,758 INFO L430 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:48:52,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:48:52,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1057548078, now seen corresponding path program 73 times [2021-07-13 19:48:52,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:48:52,758 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067801652] [2021-07-13 19:48:52,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:48:52,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:48:52,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:48:52,983 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:48:52,983 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067801652] [2021-07-13 19:48:52,983 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067801652] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:48:52,983 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:48:52,983 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:48:52,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805435106] [2021-07-13 19:48:52,984 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:48:52,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:48:52,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:48:52,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:48:52,984 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) [2021-07-13 19:48:54,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:48:54,013 INFO L93 Difference]: Finished difference Result 6842 states and 23813 transitions. [2021-07-13 19:48:54,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-07-13 19:48:54,014 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 [2021-07-13 19:48:54,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:48:54,029 INFO L225 Difference]: With dead ends: 6842 [2021-07-13 19:48:54,029 INFO L226 Difference]: Without dead ends: 6753 [2021-07-13 19:48:54,029 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 692.9ms TimeCoverageRelationStatistics Valid=189, Invalid=1791, Unknown=0, NotChecked=0, Total=1980 [2021-07-13 19:48:54,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6753 states. [2021-07-13 19:48:54,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6753 to 6168. [2021-07-13 19:48:54,146 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) [2021-07-13 19:48:54,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6168 states to 6168 states and 21584 transitions. [2021-07-13 19:48:54,160 INFO L78 Accepts]: Start accepts. Automaton has 6168 states and 21584 transitions. Word has length 47 [2021-07-13 19:48:54,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:48:54,161 INFO L482 AbstractCegarLoop]: Abstraction has 6168 states and 21584 transitions. [2021-07-13 19:48:54,161 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) [2021-07-13 19:48:54,161 INFO L276 IsEmpty]: Start isEmpty. Operand 6168 states and 21584 transitions. [2021-07-13 19:48:54,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:48:54,171 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:48:54,171 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] [2021-07-13 19:48:54,171 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-07-13 19:48:54,171 INFO L430 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:48:54,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:48:54,171 INFO L82 PathProgramCache]: Analyzing trace with hash 1491577424, now seen corresponding path program 74 times [2021-07-13 19:48:54,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:48:54,172 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424000673] [2021-07-13 19:48:54,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:48:54,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:48:54,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:48:54,369 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:48:54,369 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424000673] [2021-07-13 19:48:54,369 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424000673] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:48:54,369 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:48:54,369 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:48:54,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877784999] [2021-07-13 19:48:54,369 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:48:54,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:48:54,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:48:54,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:48:54,370 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) [2021-07-13 19:48:55,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:48:55,495 INFO L93 Difference]: Finished difference Result 6866 states and 23889 transitions. [2021-07-13 19:48:55,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-07-13 19:48:55,495 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 [2021-07-13 19:48:55,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:48:55,510 INFO L225 Difference]: With dead ends: 6866 [2021-07-13 19:48:55,510 INFO L226 Difference]: Without dead ends: 6761 [2021-07-13 19:48:55,510 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 704.8ms TimeCoverageRelationStatistics Valid=193, Invalid=1877, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:48:55,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6761 states. [2021-07-13 19:48:55,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6761 to 6160. [2021-07-13 19:48:55,605 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) [2021-07-13 19:48:55,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6160 states to 6160 states and 21556 transitions. [2021-07-13 19:48:55,620 INFO L78 Accepts]: Start accepts. Automaton has 6160 states and 21556 transitions. Word has length 47 [2021-07-13 19:48:55,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:48:55,620 INFO L482 AbstractCegarLoop]: Abstraction has 6160 states and 21556 transitions. [2021-07-13 19:48:55,620 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) [2021-07-13 19:48:55,620 INFO L276 IsEmpty]: Start isEmpty. Operand 6160 states and 21556 transitions. [2021-07-13 19:48:55,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:48:55,630 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:48:55,631 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] [2021-07-13 19:48:55,631 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-07-13 19:48:55,631 INFO L430 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:48:55,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:48:55,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1530456164, now seen corresponding path program 75 times [2021-07-13 19:48:55,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:48:55,631 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307682521] [2021-07-13 19:48:55,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:48:55,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:48:55,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:48:55,837 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:48:55,837 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307682521] [2021-07-13 19:48:55,837 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307682521] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:48:55,837 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:48:55,837 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:48:55,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640066009] [2021-07-13 19:48:55,837 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:48:55,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:48:55,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:48:55,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:48:55,838 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) [2021-07-13 19:48:56,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:48:56,939 INFO L93 Difference]: Finished difference Result 6767 states and 23590 transitions. [2021-07-13 19:48:56,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-07-13 19:48:56,940 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 [2021-07-13 19:48:56,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:48:56,954 INFO L225 Difference]: With dead ends: 6767 [2021-07-13 19:48:56,954 INFO L226 Difference]: Without dead ends: 6542 [2021-07-13 19:48:56,955 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 683.1ms TimeCoverageRelationStatistics Valid=187, Invalid=1793, Unknown=0, NotChecked=0, Total=1980 [2021-07-13 19:48:56,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6542 states. [2021-07-13 19:48:57,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6542 to 6080. [2021-07-13 19:48:57,046 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) [2021-07-13 19:48:57,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6080 states to 6080 states and 21300 transitions. [2021-07-13 19:48:57,060 INFO L78 Accepts]: Start accepts. Automaton has 6080 states and 21300 transitions. Word has length 47 [2021-07-13 19:48:57,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:48:57,060 INFO L482 AbstractCegarLoop]: Abstraction has 6080 states and 21300 transitions. [2021-07-13 19:48:57,060 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) [2021-07-13 19:48:57,061 INFO L276 IsEmpty]: Start isEmpty. Operand 6080 states and 21300 transitions. [2021-07-13 19:48:57,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:48:57,069 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:48:57,070 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] [2021-07-13 19:48:57,070 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-07-13 19:48:57,070 INFO L430 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:48:57,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:48:57,070 INFO L82 PathProgramCache]: Analyzing trace with hash -954128354, now seen corresponding path program 76 times [2021-07-13 19:48:57,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:48:57,070 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400413627] [2021-07-13 19:48:57,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:48:57,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:48:57,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:48:57,279 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:48:57,279 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400413627] [2021-07-13 19:48:57,279 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400413627] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:48:57,280 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:48:57,280 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:48:57,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136208266] [2021-07-13 19:48:57,280 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:48:57,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:48:57,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:48:57,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:48:57,280 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) [2021-07-13 19:49:00,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:49:00,059 INFO L93 Difference]: Finished difference Result 9849 states and 34418 transitions. [2021-07-13 19:49:00,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-07-13 19:49:00,060 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 [2021-07-13 19:49:00,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:49:00,109 INFO L225 Difference]: With dead ends: 9849 [2021-07-13 19:49:00,109 INFO L226 Difference]: Without dead ends: 9712 [2021-07-13 19:49:00,110 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1589 ImplicationChecksByTransitivity, 1550.7ms TimeCoverageRelationStatistics Valid=467, Invalid=5083, Unknown=0, NotChecked=0, Total=5550 [2021-07-13 19:49:00,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9712 states. [2021-07-13 19:49:00,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9712 to 6118. [2021-07-13 19:49:00,213 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) [2021-07-13 19:49:00,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6118 states to 6118 states and 21411 transitions. [2021-07-13 19:49:00,227 INFO L78 Accepts]: Start accepts. Automaton has 6118 states and 21411 transitions. Word has length 47 [2021-07-13 19:49:00,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:49:00,228 INFO L482 AbstractCegarLoop]: Abstraction has 6118 states and 21411 transitions. [2021-07-13 19:49:00,228 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) [2021-07-13 19:49:00,228 INFO L276 IsEmpty]: Start isEmpty. Operand 6118 states and 21411 transitions. [2021-07-13 19:49:00,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:49:00,237 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:49:00,237 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] [2021-07-13 19:49:00,237 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-07-13 19:49:00,238 INFO L430 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:49:00,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:49:00,238 INFO L82 PathProgramCache]: Analyzing trace with hash -967659776, now seen corresponding path program 77 times [2021-07-13 19:49:00,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:49:00,238 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766467751] [2021-07-13 19:49:00,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:49:00,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:49:00,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:49:00,458 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:49:00,458 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766467751] [2021-07-13 19:49:00,458 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766467751] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:49:00,458 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:49:00,458 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:49:00,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207383181] [2021-07-13 19:49:00,459 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:49:00,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:49:00,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:49:00,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:49:00,459 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) [2021-07-13 19:49:03,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:49:03,624 INFO L93 Difference]: Finished difference Result 10931 states and 38497 transitions. [2021-07-13 19:49:03,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-07-13 19:49:03,624 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 [2021-07-13 19:49:03,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:49:03,649 INFO L225 Difference]: With dead ends: 10931 [2021-07-13 19:49:03,649 INFO L226 Difference]: Without dead ends: 10842 [2021-07-13 19:49:03,650 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1953 ImplicationChecksByTransitivity, 1895.5ms TimeCoverageRelationStatistics Valid=594, Invalid=6048, Unknown=0, NotChecked=0, Total=6642 [2021-07-13 19:49:03,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10842 states. [2021-07-13 19:49:03,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10842 to 6122. [2021-07-13 19:49:03,773 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) [2021-07-13 19:49:03,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6122 states to 6122 states and 21419 transitions. [2021-07-13 19:49:03,787 INFO L78 Accepts]: Start accepts. Automaton has 6122 states and 21419 transitions. Word has length 47 [2021-07-13 19:49:03,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:49:03,787 INFO L482 AbstractCegarLoop]: Abstraction has 6122 states and 21419 transitions. [2021-07-13 19:49:03,787 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) [2021-07-13 19:49:03,787 INFO L276 IsEmpty]: Start isEmpty. Operand 6122 states and 21419 transitions. [2021-07-13 19:49:03,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:49:03,797 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:49:03,797 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] [2021-07-13 19:49:03,797 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-07-13 19:49:03,797 INFO L430 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:49:03,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:49:03,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1818311684, now seen corresponding path program 78 times [2021-07-13 19:49:03,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:49:03,797 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851975918] [2021-07-13 19:49:03,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:49:03,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:49:04,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:49:04,065 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:49:04,065 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851975918] [2021-07-13 19:49:04,065 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851975918] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:49:04,065 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:49:04,065 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:49:04,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178408951] [2021-07-13 19:49:04,065 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:49:04,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:49:04,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:49:04,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:49:04,066 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) [2021-07-13 19:49:07,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:49:07,197 INFO L93 Difference]: Finished difference Result 11010 states and 38913 transitions. [2021-07-13 19:49:07,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-07-13 19:49:07,197 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 [2021-07-13 19:49:07,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:49:07,224 INFO L225 Difference]: With dead ends: 11010 [2021-07-13 19:49:07,224 INFO L226 Difference]: Without dead ends: 10903 [2021-07-13 19:49:07,225 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1836 ImplicationChecksByTransitivity, 1831.9ms TimeCoverageRelationStatistics Valid=553, Invalid=5767, Unknown=0, NotChecked=0, Total=6320 [2021-07-13 19:49:07,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10903 states. [2021-07-13 19:49:07,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10903 to 6084. [2021-07-13 19:49:07,352 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) [2021-07-13 19:49:07,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6084 states to 6084 states and 21306 transitions. [2021-07-13 19:49:07,367 INFO L78 Accepts]: Start accepts. Automaton has 6084 states and 21306 transitions. Word has length 47 [2021-07-13 19:49:07,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:49:07,367 INFO L482 AbstractCegarLoop]: Abstraction has 6084 states and 21306 transitions. [2021-07-13 19:49:07,367 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) [2021-07-13 19:49:07,367 INFO L276 IsEmpty]: Start isEmpty. Operand 6084 states and 21306 transitions. [2021-07-13 19:49:07,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:49:07,377 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:49:07,377 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] [2021-07-13 19:49:07,377 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-07-13 19:49:07,377 INFO L430 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:49:07,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:49:07,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1917677824, now seen corresponding path program 79 times [2021-07-13 19:49:07,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:49:07,378 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513104865] [2021-07-13 19:49:07,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:49:07,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:49:07,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:49:07,610 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:49:07,610 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513104865] [2021-07-13 19:49:07,610 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513104865] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:49:07,610 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:49:07,610 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:49:07,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426892695] [2021-07-13 19:49:07,610 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:49:07,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:49:07,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:49:07,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:49:07,611 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) [2021-07-13 19:49:08,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:49:08,827 INFO L93 Difference]: Finished difference Result 7050 states and 24382 transitions. [2021-07-13 19:49:08,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-07-13 19:49:08,827 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 [2021-07-13 19:49:08,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:49:08,842 INFO L225 Difference]: With dead ends: 7050 [2021-07-13 19:49:08,842 INFO L226 Difference]: Without dead ends: 6961 [2021-07-13 19:49:08,843 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 791.8ms TimeCoverageRelationStatistics Valid=219, Invalid=2133, Unknown=0, NotChecked=0, Total=2352 [2021-07-13 19:49:08,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6961 states. [2021-07-13 19:49:08,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6961 to 6094. [2021-07-13 19:49:08,935 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) [2021-07-13 19:49:08,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6094 states to 6094 states and 21333 transitions. [2021-07-13 19:49:08,950 INFO L78 Accepts]: Start accepts. Automaton has 6094 states and 21333 transitions. Word has length 47 [2021-07-13 19:49:08,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:49:08,950 INFO L482 AbstractCegarLoop]: Abstraction has 6094 states and 21333 transitions. [2021-07-13 19:49:08,950 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) [2021-07-13 19:49:08,950 INFO L276 IsEmpty]: Start isEmpty. Operand 6094 states and 21333 transitions. [2021-07-13 19:49:08,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:49:08,959 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:49:08,959 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] [2021-07-13 19:49:08,959 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-07-13 19:49:08,960 INFO L430 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:49:08,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:49:08,960 INFO L82 PathProgramCache]: Analyzing trace with hash 2053627648, now seen corresponding path program 80 times [2021-07-13 19:49:08,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:49:08,960 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228161936] [2021-07-13 19:49:08,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:49:08,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:49:09,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:49:09,180 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:49:09,180 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228161936] [2021-07-13 19:49:09,181 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228161936] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:49:09,181 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:49:09,181 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:49:09,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222920463] [2021-07-13 19:49:09,181 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:49:09,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:49:09,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:49:09,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:49:09,181 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) [2021-07-13 19:49:10,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:49:10,469 INFO L93 Difference]: Finished difference Result 6983 states and 24195 transitions. [2021-07-13 19:49:10,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-07-13 19:49:10,469 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 [2021-07-13 19:49:10,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:49:10,485 INFO L225 Difference]: With dead ends: 6983 [2021-07-13 19:49:10,485 INFO L226 Difference]: Without dead ends: 6862 [2021-07-13 19:49:10,485 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 558 ImplicationChecksByTransitivity, 890.3ms TimeCoverageRelationStatistics Valid=237, Invalid=2415, Unknown=0, NotChecked=0, Total=2652 [2021-07-13 19:49:10,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6862 states. [2021-07-13 19:49:10,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6862 to 6090. [2021-07-13 19:49:10,566 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) [2021-07-13 19:49:10,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6090 states to 6090 states and 21319 transitions. [2021-07-13 19:49:10,579 INFO L78 Accepts]: Start accepts. Automaton has 6090 states and 21319 transitions. Word has length 47 [2021-07-13 19:49:10,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:49:10,579 INFO L482 AbstractCegarLoop]: Abstraction has 6090 states and 21319 transitions. [2021-07-13 19:49:10,579 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) [2021-07-13 19:49:10,579 INFO L276 IsEmpty]: Start isEmpty. Operand 6090 states and 21319 transitions. [2021-07-13 19:49:10,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:49:10,588 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:49:10,588 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] [2021-07-13 19:49:10,588 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-07-13 19:49:10,588 INFO L430 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:49:10,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:49:10,588 INFO L82 PathProgramCache]: Analyzing trace with hash -346256388, now seen corresponding path program 81 times [2021-07-13 19:49:10,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:49:10,588 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267947171] [2021-07-13 19:49:10,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:49:10,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:49:10,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:49:10,826 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:49:10,826 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267947171] [2021-07-13 19:49:10,826 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267947171] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:49:10,826 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:49:10,826 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:49:10,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657276576] [2021-07-13 19:49:10,827 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:49:10,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:49:10,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:49:10,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:49:10,827 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) [2021-07-13 19:49:12,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:49:12,639 INFO L93 Difference]: Finished difference Result 7659 states and 26554 transitions. [2021-07-13 19:49:12,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-07-13 19:49:12,639 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 [2021-07-13 19:49:12,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:49:12,655 INFO L225 Difference]: With dead ends: 7659 [2021-07-13 19:49:12,655 INFO L226 Difference]: Without dead ends: 7544 [2021-07-13 19:49:12,664 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 588 ImplicationChecksByTransitivity, 1084.5ms TimeCoverageRelationStatistics Valid=243, Invalid=2513, Unknown=0, NotChecked=0, Total=2756 [2021-07-13 19:49:12,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7544 states. [2021-07-13 19:49:12,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7544 to 6202. [2021-07-13 19:49:12,764 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) [2021-07-13 19:49:12,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6202 states to 6202 states and 21679 transitions. [2021-07-13 19:49:12,779 INFO L78 Accepts]: Start accepts. Automaton has 6202 states and 21679 transitions. Word has length 47 [2021-07-13 19:49:12,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:49:12,779 INFO L482 AbstractCegarLoop]: Abstraction has 6202 states and 21679 transitions. [2021-07-13 19:49:12,779 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) [2021-07-13 19:49:12,779 INFO L276 IsEmpty]: Start isEmpty. Operand 6202 states and 21679 transitions. [2021-07-13 19:49:12,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:49:12,789 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:49:12,790 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] [2021-07-13 19:49:12,790 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-07-13 19:49:12,790 INFO L430 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:49:12,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:49:12,790 INFO L82 PathProgramCache]: Analyzing trace with hash -47364710, now seen corresponding path program 82 times [2021-07-13 19:49:12,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:49:12,790 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394380576] [2021-07-13 19:49:12,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:49:12,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:49:13,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:49:13,038 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:49:13,038 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394380576] [2021-07-13 19:49:13,038 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394380576] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:49:13,038 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:49:13,038 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:49:13,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133234128] [2021-07-13 19:49:13,038 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:49:13,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:49:13,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:49:13,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:49:13,039 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) [2021-07-13 19:49:14,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:49:14,486 INFO L93 Difference]: Finished difference Result 7055 states and 24409 transitions. [2021-07-13 19:49:14,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-07-13 19:49:14,486 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 [2021-07-13 19:49:14,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:49:14,502 INFO L225 Difference]: With dead ends: 7055 [2021-07-13 19:49:14,503 INFO L226 Difference]: Without dead ends: 6958 [2021-07-13 19:49:14,503 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 948.9ms TimeCoverageRelationStatistics Valid=208, Invalid=2144, Unknown=0, NotChecked=0, Total=2352 [2021-07-13 19:49:14,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6958 states. [2021-07-13 19:49:14,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6958 to 6216. [2021-07-13 19:49:14,598 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) [2021-07-13 19:49:14,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6216 states to 6216 states and 21706 transitions. [2021-07-13 19:49:14,613 INFO L78 Accepts]: Start accepts. Automaton has 6216 states and 21706 transitions. Word has length 47 [2021-07-13 19:49:14,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:49:14,614 INFO L482 AbstractCegarLoop]: Abstraction has 6216 states and 21706 transitions. [2021-07-13 19:49:14,614 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) [2021-07-13 19:49:14,614 INFO L276 IsEmpty]: Start isEmpty. Operand 6216 states and 21706 transitions. [2021-07-13 19:49:14,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:49:14,624 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:49:14,624 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] [2021-07-13 19:49:14,624 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-07-13 19:49:14,625 INFO L430 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:49:14,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:49:14,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1772785220, now seen corresponding path program 83 times [2021-07-13 19:49:14,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:49:14,626 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011870048] [2021-07-13 19:49:14,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:49:14,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:49:14,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:49:14,869 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:49:14,869 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011870048] [2021-07-13 19:49:14,869 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011870048] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:49:14,869 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:49:14,870 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:49:14,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861154411] [2021-07-13 19:49:14,870 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:49:14,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:49:14,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:49:14,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:49:14,870 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) [2021-07-13 19:49:16,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:49:16,157 INFO L93 Difference]: Finished difference Result 7031 states and 24319 transitions. [2021-07-13 19:49:16,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-07-13 19:49:16,158 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 [2021-07-13 19:49:16,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:49:16,173 INFO L225 Difference]: With dead ends: 7031 [2021-07-13 19:49:16,174 INFO L226 Difference]: Without dead ends: 6926 [2021-07-13 19:49:16,174 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 817.6ms TimeCoverageRelationStatistics Valid=187, Invalid=1883, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:49:16,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6926 states. [2021-07-13 19:49:16,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6926 to 6202. [2021-07-13 19:49:16,344 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) [2021-07-13 19:49:16,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6202 states to 6202 states and 21673 transitions. [2021-07-13 19:49:16,358 INFO L78 Accepts]: Start accepts. Automaton has 6202 states and 21673 transitions. Word has length 47 [2021-07-13 19:49:16,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:49:16,358 INFO L482 AbstractCegarLoop]: Abstraction has 6202 states and 21673 transitions. [2021-07-13 19:49:16,358 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) [2021-07-13 19:49:16,358 INFO L276 IsEmpty]: Start isEmpty. Operand 6202 states and 21673 transitions. [2021-07-13 19:49:16,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:49:16,368 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:49:16,368 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] [2021-07-13 19:49:16,368 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-07-13 19:49:16,368 INFO L430 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:49:16,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:49:16,369 INFO L82 PathProgramCache]: Analyzing trace with hash 546782524, now seen corresponding path program 84 times [2021-07-13 19:49:16,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:49:16,369 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557870560] [2021-07-13 19:49:16,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:49:16,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:49:16,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:49:16,629 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:49:16,629 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557870560] [2021-07-13 19:49:16,629 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557870560] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:49:16,629 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:49:16,629 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:49:16,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293788228] [2021-07-13 19:49:16,629 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:49:16,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:49:16,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:49:16,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:49:16,630 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) [2021-07-13 19:49:18,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:49:18,002 INFO L93 Difference]: Finished difference Result 6942 states and 24123 transitions. [2021-07-13 19:49:18,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-07-13 19:49:18,002 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 [2021-07-13 19:49:18,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:49:18,017 INFO L225 Difference]: With dead ends: 6942 [2021-07-13 19:49:18,018 INFO L226 Difference]: Without dead ends: 6853 [2021-07-13 19:49:18,018 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 957.8ms TimeCoverageRelationStatistics Valid=232, Invalid=2218, Unknown=0, NotChecked=0, Total=2450 [2021-07-13 19:49:18,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6853 states. [2021-07-13 19:49:18,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6853 to 6222. [2021-07-13 19:49:18,116 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) [2021-07-13 19:49:18,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6222 states to 6222 states and 21743 transitions. [2021-07-13 19:49:18,130 INFO L78 Accepts]: Start accepts. Automaton has 6222 states and 21743 transitions. Word has length 47 [2021-07-13 19:49:18,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:49:18,130 INFO L482 AbstractCegarLoop]: Abstraction has 6222 states and 21743 transitions. [2021-07-13 19:49:18,130 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) [2021-07-13 19:49:18,131 INFO L276 IsEmpty]: Start isEmpty. Operand 6222 states and 21743 transitions. [2021-07-13 19:49:18,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:49:18,141 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:49:18,141 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] [2021-07-13 19:49:18,141 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-07-13 19:49:18,141 INFO L430 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:49:18,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:49:18,142 INFO L82 PathProgramCache]: Analyzing trace with hash 223120700, now seen corresponding path program 85 times [2021-07-13 19:49:18,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:49:18,142 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545788990] [2021-07-13 19:49:18,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:49:18,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:49:18,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:49:18,467 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:49:18,467 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545788990] [2021-07-13 19:49:18,467 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545788990] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:49:18,467 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:49:18,468 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:49:18,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964655455] [2021-07-13 19:49:18,468 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:49:18,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:49:18,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:49:18,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:49:18,468 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) [2021-07-13 19:49:19,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:49:19,753 INFO L93 Difference]: Finished difference Result 6970 states and 24211 transitions. [2021-07-13 19:49:19,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-07-13 19:49:19,753 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 [2021-07-13 19:49:19,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:49:19,768 INFO L225 Difference]: With dead ends: 6970 [2021-07-13 19:49:19,768 INFO L226 Difference]: Without dead ends: 6841 [2021-07-13 19:49:19,768 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 935.9ms TimeCoverageRelationStatistics Valid=234, Invalid=2316, Unknown=0, NotChecked=0, Total=2550 [2021-07-13 19:49:19,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6841 states. [2021-07-13 19:49:19,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6841 to 6224. [2021-07-13 19:49:19,861 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) [2021-07-13 19:49:19,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6224 states to 6224 states and 21740 transitions. [2021-07-13 19:49:19,875 INFO L78 Accepts]: Start accepts. Automaton has 6224 states and 21740 transitions. Word has length 47 [2021-07-13 19:49:19,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:49:19,876 INFO L482 AbstractCegarLoop]: Abstraction has 6224 states and 21740 transitions. [2021-07-13 19:49:19,876 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) [2021-07-13 19:49:19,876 INFO L276 IsEmpty]: Start isEmpty. Operand 6224 states and 21740 transitions. [2021-07-13 19:49:19,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:49:19,886 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:49:19,886 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] [2021-07-13 19:49:19,886 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-07-13 19:49:19,886 INFO L430 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:49:19,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:49:19,886 INFO L82 PathProgramCache]: Analyzing trace with hash 279232154, now seen corresponding path program 86 times [2021-07-13 19:49:19,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:49:19,886 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645099204] [2021-07-13 19:49:19,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:49:19,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:49:20,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:49:20,100 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:49:20,100 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645099204] [2021-07-13 19:49:20,100 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645099204] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:49:20,101 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:49:20,101 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:49:20,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560479363] [2021-07-13 19:49:20,101 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:49:20,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:49:20,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:49:20,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:49:20,101 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) [2021-07-13 19:49:21,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:49:21,361 INFO L93 Difference]: Finished difference Result 6907 states and 24038 transitions. [2021-07-13 19:49:21,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-07-13 19:49:21,362 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 [2021-07-13 19:49:21,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:49:21,376 INFO L225 Difference]: With dead ends: 6907 [2021-07-13 19:49:21,376 INFO L226 Difference]: Without dead ends: 6746 [2021-07-13 19:49:21,377 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 848.9ms TimeCoverageRelationStatistics Valid=231, Invalid=2219, Unknown=0, NotChecked=0, Total=2450 [2021-07-13 19:49:21,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6746 states. [2021-07-13 19:49:21,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6746 to 6208. [2021-07-13 19:49:21,471 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) [2021-07-13 19:49:21,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6208 states to 6208 states and 21688 transitions. [2021-07-13 19:49:21,485 INFO L78 Accepts]: Start accepts. Automaton has 6208 states and 21688 transitions. Word has length 47 [2021-07-13 19:49:21,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:49:21,485 INFO L482 AbstractCegarLoop]: Abstraction has 6208 states and 21688 transitions. [2021-07-13 19:49:21,485 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) [2021-07-13 19:49:21,485 INFO L276 IsEmpty]: Start isEmpty. Operand 6208 states and 21688 transitions. [2021-07-13 19:49:21,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:49:21,496 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:49:21,496 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] [2021-07-13 19:49:21,496 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-07-13 19:49:21,496 INFO L430 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:49:21,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:49:21,496 INFO L82 PathProgramCache]: Analyzing trace with hash -1519137476, now seen corresponding path program 87 times [2021-07-13 19:49:21,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:49:21,496 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511313233] [2021-07-13 19:49:21,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:49:21,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:49:21,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:49:21,714 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:49:21,714 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511313233] [2021-07-13 19:49:21,714 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511313233] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:49:21,714 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:49:21,714 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:49:21,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068136752] [2021-07-13 19:49:21,714 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:49:21,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:49:21,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:49:21,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:49:21,715 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) [2021-07-13 19:49:23,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:49:23,655 INFO L93 Difference]: Finished difference Result 8257 states and 28674 transitions. [2021-07-13 19:49:23,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-07-13 19:49:23,655 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 [2021-07-13 19:49:23,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:49:23,673 INFO L225 Difference]: With dead ends: 8257 [2021-07-13 19:49:23,673 INFO L226 Difference]: Without dead ends: 8060 [2021-07-13 19:49:23,674 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 921 ImplicationChecksByTransitivity, 1125.4ms TimeCoverageRelationStatistics Valid=321, Invalid=3461, Unknown=0, NotChecked=0, Total=3782 [2021-07-13 19:49:23,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8060 states. [2021-07-13 19:49:23,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8060 to 6144. [2021-07-13 19:49:23,779 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) [2021-07-13 19:49:23,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6144 states to 6144 states and 21494 transitions. [2021-07-13 19:49:23,793 INFO L78 Accepts]: Start accepts. Automaton has 6144 states and 21494 transitions. Word has length 47 [2021-07-13 19:49:23,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:49:23,793 INFO L482 AbstractCegarLoop]: Abstraction has 6144 states and 21494 transitions. [2021-07-13 19:49:23,794 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) [2021-07-13 19:49:23,794 INFO L276 IsEmpty]: Start isEmpty. Operand 6144 states and 21494 transitions. [2021-07-13 19:49:23,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:49:23,803 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:49:23,803 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] [2021-07-13 19:49:23,803 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-07-13 19:49:23,803 INFO L430 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:49:23,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:49:23,804 INFO L82 PathProgramCache]: Analyzing trace with hash 2000712218, now seen corresponding path program 88 times [2021-07-13 19:49:23,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:49:23,804 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473954614] [2021-07-13 19:49:23,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:49:23,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:49:24,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:49:24,019 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:49:24,019 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473954614] [2021-07-13 19:49:24,019 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473954614] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:49:24,019 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:49:24,019 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:49:24,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164028172] [2021-07-13 19:49:24,020 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:49:24,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:49:24,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:49:24,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:49:24,020 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) [2021-07-13 19:49:25,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:49:25,858 INFO L93 Difference]: Finished difference Result 8151 states and 28335 transitions. [2021-07-13 19:49:25,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-07-13 19:49:25,859 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 [2021-07-13 19:49:25,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:49:25,876 INFO L225 Difference]: With dead ends: 8151 [2021-07-13 19:49:25,876 INFO L226 Difference]: Without dead ends: 8056 [2021-07-13 19:49:25,876 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 879 ImplicationChecksByTransitivity, 1074.6ms TimeCoverageRelationStatistics Valid=313, Invalid=3347, Unknown=0, NotChecked=0, Total=3660 [2021-07-13 19:49:25,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8056 states. [2021-07-13 19:49:25,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8056 to 6132. [2021-07-13 19:49:25,979 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) [2021-07-13 19:49:25,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6132 states to 6132 states and 21464 transitions. [2021-07-13 19:49:25,993 INFO L78 Accepts]: Start accepts. Automaton has 6132 states and 21464 transitions. Word has length 47 [2021-07-13 19:49:25,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:49:25,993 INFO L482 AbstractCegarLoop]: Abstraction has 6132 states and 21464 transitions. [2021-07-13 19:49:25,993 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) [2021-07-13 19:49:25,993 INFO L276 IsEmpty]: Start isEmpty. Operand 6132 states and 21464 transitions. [2021-07-13 19:49:26,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:49:26,003 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:49:26,003 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] [2021-07-13 19:49:26,003 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-07-13 19:49:26,003 INFO L430 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:49:26,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:49:26,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1995363400, now seen corresponding path program 89 times [2021-07-13 19:49:26,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:49:26,003 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972552310] [2021-07-13 19:49:26,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:49:26,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:49:26,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:49:26,262 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:49:26,262 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972552310] [2021-07-13 19:49:26,262 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972552310] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:49:26,262 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:49:26,262 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:49:26,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623699179] [2021-07-13 19:49:26,262 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:49:26,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:49:26,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:49:26,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:49:26,263 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) [2021-07-13 19:49:27,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:49:27,417 INFO L93 Difference]: Finished difference Result 7016 states and 24295 transitions. [2021-07-13 19:49:27,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-07-13 19:49:27,417 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 [2021-07-13 19:49:27,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:49:27,432 INFO L225 Difference]: With dead ends: 7016 [2021-07-13 19:49:27,432 INFO L226 Difference]: Without dead ends: 6919 [2021-07-13 19:49:27,433 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 813.5ms TimeCoverageRelationStatistics Valid=221, Invalid=2131, Unknown=0, NotChecked=0, Total=2352 [2021-07-13 19:49:27,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6919 states. [2021-07-13 19:49:27,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6919 to 6144. [2021-07-13 19:49:27,526 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) [2021-07-13 19:49:27,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6144 states to 6144 states and 21492 transitions. [2021-07-13 19:49:27,540 INFO L78 Accepts]: Start accepts. Automaton has 6144 states and 21492 transitions. Word has length 47 [2021-07-13 19:49:27,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:49:27,541 INFO L482 AbstractCegarLoop]: Abstraction has 6144 states and 21492 transitions. [2021-07-13 19:49:27,541 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) [2021-07-13 19:49:27,541 INFO L276 IsEmpty]: Start isEmpty. Operand 6144 states and 21492 transitions. [2021-07-13 19:49:27,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:49:27,551 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:49:27,551 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] [2021-07-13 19:49:27,551 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-07-13 19:49:27,551 INFO L430 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:49:27,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:49:27,551 INFO L82 PathProgramCache]: Analyzing trace with hash 574183386, now seen corresponding path program 90 times [2021-07-13 19:49:27,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:49:27,551 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478279094] [2021-07-13 19:49:27,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:49:27,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:49:27,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:49:27,773 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:49:27,773 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478279094] [2021-07-13 19:49:27,773 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478279094] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:49:27,773 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:49:27,773 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:49:27,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755764177] [2021-07-13 19:49:27,774 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:49:27,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:49:27,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:49:27,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:49:27,774 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) [2021-07-13 19:49:28,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:49:28,897 INFO L93 Difference]: Finished difference Result 6992 states and 24205 transitions. [2021-07-13 19:49:28,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-07-13 19:49:28,897 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 [2021-07-13 19:49:28,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:49:28,912 INFO L225 Difference]: With dead ends: 6992 [2021-07-13 19:49:28,912 INFO L226 Difference]: Without dead ends: 6893 [2021-07-13 19:49:28,913 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 762.3ms TimeCoverageRelationStatistics Valid=202, Invalid=1960, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 19:49:28,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6893 states. [2021-07-13 19:49:28,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6893 to 6136. [2021-07-13 19:49:29,005 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) [2021-07-13 19:49:29,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6136 states to 6136 states and 21472 transitions. [2021-07-13 19:49:29,019 INFO L78 Accepts]: Start accepts. Automaton has 6136 states and 21472 transitions. Word has length 47 [2021-07-13 19:49:29,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:49:29,020 INFO L482 AbstractCegarLoop]: Abstraction has 6136 states and 21472 transitions. [2021-07-13 19:49:29,020 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) [2021-07-13 19:49:29,020 INFO L276 IsEmpty]: Start isEmpty. Operand 6136 states and 21472 transitions. [2021-07-13 19:49:29,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:49:29,029 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:49:29,029 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] [2021-07-13 19:49:29,029 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-07-13 19:49:29,029 INFO L430 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:49:29,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:49:29,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1649927950, now seen corresponding path program 91 times [2021-07-13 19:49:29,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:49:29,030 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106946822] [2021-07-13 19:49:29,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:49:29,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:49:29,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:49:29,244 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:49:29,244 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106946822] [2021-07-13 19:49:29,244 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106946822] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:49:29,245 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:49:29,245 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:49:29,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576278811] [2021-07-13 19:49:29,245 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:49:29,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:49:29,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:49:29,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:49:29,245 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) [2021-07-13 19:49:30,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:49:30,428 INFO L93 Difference]: Finished difference Result 6771 states and 23602 transitions. [2021-07-13 19:49:30,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-07-13 19:49:30,428 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 [2021-07-13 19:49:30,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:49:30,444 INFO L225 Difference]: With dead ends: 6771 [2021-07-13 19:49:30,444 INFO L226 Difference]: Without dead ends: 6626 [2021-07-13 19:49:30,445 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 785.8ms TimeCoverageRelationStatistics Valid=211, Invalid=2045, Unknown=0, NotChecked=0, Total=2256 [2021-07-13 19:49:30,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6626 states. [2021-07-13 19:49:30,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6626 to 6148. [2021-07-13 19:49:30,535 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) [2021-07-13 19:49:30,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6148 states to 6148 states and 21502 transitions. [2021-07-13 19:49:30,549 INFO L78 Accepts]: Start accepts. Automaton has 6148 states and 21502 transitions. Word has length 47 [2021-07-13 19:49:30,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:49:30,549 INFO L482 AbstractCegarLoop]: Abstraction has 6148 states and 21502 transitions. [2021-07-13 19:49:30,549 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) [2021-07-13 19:49:30,550 INFO L276 IsEmpty]: Start isEmpty. Operand 6148 states and 21502 transitions. [2021-07-13 19:49:30,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:49:30,559 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:49:30,560 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] [2021-07-13 19:49:30,560 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-07-13 19:49:30,560 INFO L430 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:49:30,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:49:30,560 INFO L82 PathProgramCache]: Analyzing trace with hash -293524756, now seen corresponding path program 92 times [2021-07-13 19:49:30,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:49:30,560 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270497251] [2021-07-13 19:49:30,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:49:30,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:49:30,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:49:30,775 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:49:30,775 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270497251] [2021-07-13 19:49:30,775 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270497251] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:49:30,775 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:49:30,775 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:49:30,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624039122] [2021-07-13 19:49:30,776 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:49:30,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:49:30,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:49:30,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:49:30,776 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) [2021-07-13 19:49:31,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:49:31,849 INFO L93 Difference]: Finished difference Result 6867 states and 23829 transitions. [2021-07-13 19:49:31,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-07-13 19:49:31,850 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 [2021-07-13 19:49:31,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:49:31,864 INFO L225 Difference]: With dead ends: 6867 [2021-07-13 19:49:31,864 INFO L226 Difference]: Without dead ends: 6770 [2021-07-13 19:49:31,865 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 710.0ms TimeCoverageRelationStatistics Valid=196, Invalid=1874, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:49:31,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6770 states. [2021-07-13 19:49:31,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6770 to 6154. [2021-07-13 19:49:31,976 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) [2021-07-13 19:49:31,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6154 states to 6154 states and 21517 transitions. [2021-07-13 19:49:31,991 INFO L78 Accepts]: Start accepts. Automaton has 6154 states and 21517 transitions. Word has length 47 [2021-07-13 19:49:31,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:49:31,991 INFO L482 AbstractCegarLoop]: Abstraction has 6154 states and 21517 transitions. [2021-07-13 19:49:31,991 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) [2021-07-13 19:49:31,991 INFO L276 IsEmpty]: Start isEmpty. Operand 6154 states and 21517 transitions. [2021-07-13 19:49:32,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:49:32,002 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:49:32,002 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] [2021-07-13 19:49:32,002 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-07-13 19:49:32,002 INFO L430 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:49:32,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:49:32,002 INFO L82 PathProgramCache]: Analyzing trace with hash -2018945266, now seen corresponding path program 93 times [2021-07-13 19:49:32,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:49:32,002 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920058829] [2021-07-13 19:49:32,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:49:32,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:49:32,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:49:32,224 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:49:32,224 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920058829] [2021-07-13 19:49:32,224 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920058829] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:49:32,224 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:49:32,224 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:49:32,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38316093] [2021-07-13 19:49:32,224 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:49:32,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:49:32,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:49:32,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:49:32,225 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) [2021-07-13 19:49:33,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:49:33,247 INFO L93 Difference]: Finished difference Result 6768 states and 23524 transitions. [2021-07-13 19:49:33,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-07-13 19:49:33,247 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 [2021-07-13 19:49:33,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:49:33,262 INFO L225 Difference]: With dead ends: 6768 [2021-07-13 19:49:33,262 INFO L226 Difference]: Without dead ends: 6639 [2021-07-13 19:49:33,262 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 688.4ms TimeCoverageRelationStatistics Valid=187, Invalid=1793, Unknown=0, NotChecked=0, Total=1980 [2021-07-13 19:49:33,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6639 states. [2021-07-13 19:49:33,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6639 to 6116. [2021-07-13 19:49:33,351 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) [2021-07-13 19:49:33,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6116 states to 6116 states and 21428 transitions. [2021-07-13 19:49:33,365 INFO L78 Accepts]: Start accepts. Automaton has 6116 states and 21428 transitions. Word has length 47 [2021-07-13 19:49:33,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:49:33,365 INFO L482 AbstractCegarLoop]: Abstraction has 6116 states and 21428 transitions. [2021-07-13 19:49:33,365 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) [2021-07-13 19:49:33,366 INFO L276 IsEmpty]: Start isEmpty. Operand 6116 states and 21428 transitions. [2021-07-13 19:49:33,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:49:33,375 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:49:33,375 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] [2021-07-13 19:49:33,375 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-07-13 19:49:33,375 INFO L430 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:49:33,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:49:33,376 INFO L82 PathProgramCache]: Analyzing trace with hash -2040827746, now seen corresponding path program 94 times [2021-07-13 19:49:33,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:49:33,376 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939736765] [2021-07-13 19:49:33,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:49:33,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:49:33,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:49:33,614 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:49:33,614 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939736765] [2021-07-13 19:49:33,614 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939736765] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:49:33,614 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:49:33,614 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 19:49:33,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638184601] [2021-07-13 19:49:33,614 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 19:49:33,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:49:33,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 19:49:33,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-07-13 19:49:33,615 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) [2021-07-13 19:49:34,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:49:34,490 INFO L93 Difference]: Finished difference Result 6669 states and 23239 transitions. [2021-07-13 19:49:34,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-13 19:49:34,491 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 [2021-07-13 19:49:34,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:49:34,505 INFO L225 Difference]: With dead ends: 6669 [2021-07-13 19:49:34,505 INFO L226 Difference]: Without dead ends: 6532 [2021-07-13 19:49:34,505 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 593.6ms TimeCoverageRelationStatistics Valid=146, Invalid=1260, Unknown=0, NotChecked=0, Total=1406 [2021-07-13 19:49:34,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6532 states. [2021-07-13 19:49:34,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6532 to 6132. [2021-07-13 19:49:34,597 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) [2021-07-13 19:49:34,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6132 states to 6132 states and 21476 transitions. [2021-07-13 19:49:34,611 INFO L78 Accepts]: Start accepts. Automaton has 6132 states and 21476 transitions. Word has length 47 [2021-07-13 19:49:34,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:49:34,611 INFO L482 AbstractCegarLoop]: Abstraction has 6132 states and 21476 transitions. [2021-07-13 19:49:34,611 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) [2021-07-13 19:49:34,612 INFO L276 IsEmpty]: Start isEmpty. Operand 6132 states and 21476 transitions. [2021-07-13 19:49:34,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:49:34,621 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:49:34,622 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] [2021-07-13 19:49:34,622 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-07-13 19:49:34,622 INFO L430 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:49:34,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:49:34,622 INFO L82 PathProgramCache]: Analyzing trace with hash -523131524, now seen corresponding path program 95 times [2021-07-13 19:49:34,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:49:34,622 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123430019] [2021-07-13 19:49:34,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:49:34,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:49:34,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:49:34,826 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:49:34,826 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123430019] [2021-07-13 19:49:34,826 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123430019] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:49:34,826 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:49:34,826 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:49:34,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369778953] [2021-07-13 19:49:34,827 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:49:34,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:49:34,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:49:34,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:49:34,827 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) [2021-07-13 19:49:35,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:49:35,810 INFO L93 Difference]: Finished difference Result 6728 states and 23398 transitions. [2021-07-13 19:49:35,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-07-13 19:49:35,811 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 [2021-07-13 19:49:35,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:49:35,825 INFO L225 Difference]: With dead ends: 6728 [2021-07-13 19:49:35,825 INFO L226 Difference]: Without dead ends: 6639 [2021-07-13 19:49:35,825 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 625.0ms TimeCoverageRelationStatistics Valid=162, Invalid=1478, Unknown=0, NotChecked=0, Total=1640 [2021-07-13 19:49:35,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6639 states. [2021-07-13 19:49:35,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6639 to 6196. [2021-07-13 19:49:35,919 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) [2021-07-13 19:49:35,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6196 states to 6196 states and 21692 transitions. [2021-07-13 19:49:35,934 INFO L78 Accepts]: Start accepts. Automaton has 6196 states and 21692 transitions. Word has length 47 [2021-07-13 19:49:35,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:49:35,934 INFO L482 AbstractCegarLoop]: Abstraction has 6196 states and 21692 transitions. [2021-07-13 19:49:35,934 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) [2021-07-13 19:49:35,934 INFO L276 IsEmpty]: Start isEmpty. Operand 6196 states and 21692 transitions. [2021-07-13 19:49:35,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:49:35,944 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:49:35,944 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] [2021-07-13 19:49:35,944 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-07-13 19:49:35,944 INFO L430 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:49:35,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:49:35,945 INFO L82 PathProgramCache]: Analyzing trace with hash -89102178, now seen corresponding path program 96 times [2021-07-13 19:49:35,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:49:35,945 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951305569] [2021-07-13 19:49:35,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:49:35,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:49:36,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:49:36,142 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:49:36,142 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951305569] [2021-07-13 19:49:36,142 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951305569] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:49:36,142 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:49:36,142 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:49:36,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382893857] [2021-07-13 19:49:36,142 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:49:36,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:49:36,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:49:36,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:49:36,143 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) [2021-07-13 19:49:37,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:49:37,092 INFO L93 Difference]: Finished difference Result 6637 states and 23127 transitions. [2021-07-13 19:49:37,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-07-13 19:49:37,092 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-13 19:49:37,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:49:37,105 INFO L225 Difference]: With dead ends: 6637 [2021-07-13 19:49:37,106 INFO L226 Difference]: Without dead ends: 6508 [2021-07-13 19:49:37,106 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 586.2ms TimeCoverageRelationStatistics Valid=154, Invalid=1406, Unknown=0, NotChecked=0, Total=1560 [2021-07-13 19:49:37,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6508 states. [2021-07-13 19:49:37,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6508 to 6196. [2021-07-13 19:49:37,222 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) [2021-07-13 19:49:37,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6196 states to 6196 states and 21668 transitions. [2021-07-13 19:49:37,236 INFO L78 Accepts]: Start accepts. Automaton has 6196 states and 21668 transitions. Word has length 47 [2021-07-13 19:49:37,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:49:37,236 INFO L482 AbstractCegarLoop]: Abstraction has 6196 states and 21668 transitions. [2021-07-13 19:49:37,236 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) [2021-07-13 19:49:37,236 INFO L276 IsEmpty]: Start isEmpty. Operand 6196 states and 21668 transitions. [2021-07-13 19:49:37,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:49:37,247 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:49:37,247 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] [2021-07-13 19:49:37,247 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-07-13 19:49:37,247 INFO L430 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:49:37,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:49:37,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1472331308, now seen corresponding path program 97 times [2021-07-13 19:49:37,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:49:37,247 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399383012] [2021-07-13 19:49:37,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:49:37,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:49:37,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:49:37,449 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:49:37,449 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399383012] [2021-07-13 19:49:37,449 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399383012] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:49:37,449 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:49:37,449 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:49:37,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475452337] [2021-07-13 19:49:37,449 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:49:37,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:49:37,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:49:37,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:49:37,449 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) [2021-07-13 19:49:38,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:49:38,436 INFO L93 Difference]: Finished difference Result 6680 states and 23238 transitions. [2021-07-13 19:49:38,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-07-13 19:49:38,437 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 [2021-07-13 19:49:38,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:49:38,451 INFO L225 Difference]: With dead ends: 6680 [2021-07-13 19:49:38,451 INFO L226 Difference]: Without dead ends: 6591 [2021-07-13 19:49:38,451 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 642.0ms TimeCoverageRelationStatistics Valid=171, Invalid=1551, Unknown=0, NotChecked=0, Total=1722 [2021-07-13 19:49:38,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6591 states. [2021-07-13 19:49:38,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6591 to 6196. [2021-07-13 19:49:38,543 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) [2021-07-13 19:49:38,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6196 states to 6196 states and 21668 transitions. [2021-07-13 19:49:38,558 INFO L78 Accepts]: Start accepts. Automaton has 6196 states and 21668 transitions. Word has length 47 [2021-07-13 19:49:38,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:49:38,558 INFO L482 AbstractCegarLoop]: Abstraction has 6196 states and 21668 transitions. [2021-07-13 19:49:38,558 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) [2021-07-13 19:49:38,558 INFO L276 IsEmpty]: Start isEmpty. Operand 6196 states and 21668 transitions. [2021-07-13 19:49:38,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:49:38,568 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:49:38,569 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] [2021-07-13 19:49:38,569 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-07-13 19:49:38,569 INFO L430 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:49:38,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:49:38,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1906360654, now seen corresponding path program 98 times [2021-07-13 19:49:38,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:49:38,569 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978878011] [2021-07-13 19:49:38,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:49:38,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:49:38,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:49:38,770 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:49:38,770 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978878011] [2021-07-13 19:49:38,770 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978878011] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:49:38,770 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:49:38,770 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:49:38,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295441348] [2021-07-13 19:49:38,770 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:49:38,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:49:38,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:49:38,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:49:38,770 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) [2021-07-13 19:49:39,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:49:39,730 INFO L93 Difference]: Finished difference Result 6688 states and 23266 transitions. [2021-07-13 19:49:39,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-07-13 19:49:39,731 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 [2021-07-13 19:49:39,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:49:39,745 INFO L225 Difference]: With dead ends: 6688 [2021-07-13 19:49:39,746 INFO L226 Difference]: Without dead ends: 6583 [2021-07-13 19:49:39,746 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 612.6ms TimeCoverageRelationStatistics Valid=166, Invalid=1474, Unknown=0, NotChecked=0, Total=1640 [2021-07-13 19:49:39,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6583 states. [2021-07-13 19:49:39,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6583 to 6212. [2021-07-13 19:49:39,831 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) [2021-07-13 19:49:39,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6212 states to 6212 states and 21716 transitions. [2021-07-13 19:49:39,845 INFO L78 Accepts]: Start accepts. Automaton has 6212 states and 21716 transitions. Word has length 47 [2021-07-13 19:49:39,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:49:39,845 INFO L482 AbstractCegarLoop]: Abstraction has 6212 states and 21716 transitions. [2021-07-13 19:49:39,845 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) [2021-07-13 19:49:39,845 INFO L276 IsEmpty]: Start isEmpty. Operand 6212 states and 21716 transitions. [2021-07-13 19:49:39,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:49:39,854 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:49:39,854 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] [2021-07-13 19:49:39,854 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-07-13 19:49:39,855 INFO L430 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:49:39,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:49:39,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1115672934, now seen corresponding path program 99 times [2021-07-13 19:49:39,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:49:39,855 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748278579] [2021-07-13 19:49:39,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:49:39,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:49:40,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:49:40,058 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:49:40,058 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748278579] [2021-07-13 19:49:40,058 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748278579] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:49:40,058 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:49:40,058 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:49:40,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044935417] [2021-07-13 19:49:40,059 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:49:40,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:49:40,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:49:40,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:49:40,059 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) [2021-07-13 19:49:41,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:49:41,034 INFO L93 Difference]: Finished difference Result 6605 states and 23015 transitions. [2021-07-13 19:49:41,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-07-13 19:49:41,035 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-13 19:49:41,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:49:41,048 INFO L225 Difference]: With dead ends: 6605 [2021-07-13 19:49:41,049 INFO L226 Difference]: Without dead ends: 6352 [2021-07-13 19:49:41,049 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 607.2ms TimeCoverageRelationStatistics Valid=163, Invalid=1477, Unknown=0, NotChecked=0, Total=1640 [2021-07-13 19:49:41,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6352 states. [2021-07-13 19:49:41,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6352 to 6104. [2021-07-13 19:49:41,132 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) [2021-07-13 19:49:41,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6104 states to 6104 states and 21396 transitions. [2021-07-13 19:49:41,145 INFO L78 Accepts]: Start accepts. Automaton has 6104 states and 21396 transitions. Word has length 47 [2021-07-13 19:49:41,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:49:41,145 INFO L482 AbstractCegarLoop]: Abstraction has 6104 states and 21396 transitions. [2021-07-13 19:49:41,145 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) [2021-07-13 19:49:41,145 INFO L276 IsEmpty]: Start isEmpty. Operand 6104 states and 21396 transitions. [2021-07-13 19:49:41,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:49:41,154 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:49:41,154 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] [2021-07-13 19:49:41,154 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-07-13 19:49:41,154 INFO L430 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:49:41,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:49:41,154 INFO L82 PathProgramCache]: Analyzing trace with hash 851399496, now seen corresponding path program 100 times [2021-07-13 19:49:41,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:49:41,154 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146163668] [2021-07-13 19:49:41,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:49:41,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:49:41,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:49:41,344 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:49:41,344 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146163668] [2021-07-13 19:49:41,344 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146163668] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:49:41,344 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:49:41,344 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 19:49:41,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854173060] [2021-07-13 19:49:41,344 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 19:49:41,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:49:41,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 19:49:41,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-07-13 19:49:41,345 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) [2021-07-13 19:49:42,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:49:42,180 INFO L93 Difference]: Finished difference Result 6681 states and 23265 transitions. [2021-07-13 19:49:42,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 19:49:42,180 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 [2021-07-13 19:49:42,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:49:42,195 INFO L225 Difference]: With dead ends: 6681 [2021-07-13 19:49:42,195 INFO L226 Difference]: Without dead ends: 6544 [2021-07-13 19:49:42,195 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 529.8ms TimeCoverageRelationStatistics Valid=133, Invalid=1199, Unknown=0, NotChecked=0, Total=1332 [2021-07-13 19:49:42,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6544 states. [2021-07-13 19:49:42,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6544 to 6160. [2021-07-13 19:49:42,291 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) [2021-07-13 19:49:42,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6160 states to 6160 states and 21564 transitions. [2021-07-13 19:49:42,306 INFO L78 Accepts]: Start accepts. Automaton has 6160 states and 21564 transitions. Word has length 47 [2021-07-13 19:49:42,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:49:42,306 INFO L482 AbstractCegarLoop]: Abstraction has 6160 states and 21564 transitions. [2021-07-13 19:49:42,306 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) [2021-07-13 19:49:42,306 INFO L276 IsEmpty]: Start isEmpty. Operand 6160 states and 21564 transitions. [2021-07-13 19:49:42,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:49:42,316 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:49:42,316 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] [2021-07-13 19:49:42,317 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-07-13 19:49:42,317 INFO L430 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:49:42,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:49:42,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1568967496, now seen corresponding path program 101 times [2021-07-13 19:49:42,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:49:42,317 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99366998] [2021-07-13 19:49:42,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:49:42,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:49:42,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:49:42,560 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:49:42,560 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99366998] [2021-07-13 19:49:42,560 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99366998] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:49:42,560 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:49:42,560 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:49:42,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037160979] [2021-07-13 19:49:42,560 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:49:42,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:49:42,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:49:42,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:49:42,560 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) [2021-07-13 19:49:43,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:49:43,467 INFO L93 Difference]: Finished difference Result 6740 states and 23424 transitions. [2021-07-13 19:49:43,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-07-13 19:49:43,468 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 [2021-07-13 19:49:43,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:49:43,482 INFO L225 Difference]: With dead ends: 6740 [2021-07-13 19:49:43,483 INFO L226 Difference]: Without dead ends: 6651 [2021-07-13 19:49:43,483 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 626.4ms TimeCoverageRelationStatistics Valid=149, Invalid=1411, Unknown=0, NotChecked=0, Total=1560 [2021-07-13 19:49:43,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6651 states. [2021-07-13 19:49:43,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6651 to 6224. [2021-07-13 19:49:43,577 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) [2021-07-13 19:49:43,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6224 states to 6224 states and 21780 transitions. [2021-07-13 19:49:43,592 INFO L78 Accepts]: Start accepts. Automaton has 6224 states and 21780 transitions. Word has length 47 [2021-07-13 19:49:43,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:49:43,592 INFO L482 AbstractCegarLoop]: Abstraction has 6224 states and 21780 transitions. [2021-07-13 19:49:43,592 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) [2021-07-13 19:49:43,593 INFO L276 IsEmpty]: Start isEmpty. Operand 6224 states and 21780 transitions. [2021-07-13 19:49:43,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:49:43,604 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:49:43,604 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] [2021-07-13 19:49:43,604 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-07-13 19:49:43,604 INFO L430 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:49:43,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:49:43,604 INFO L82 PathProgramCache]: Analyzing trace with hash -115495190, now seen corresponding path program 102 times [2021-07-13 19:49:43,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:49:43,604 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371949426] [2021-07-13 19:49:43,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:49:43,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:49:43,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:49:43,802 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:49:43,802 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371949426] [2021-07-13 19:49:43,802 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371949426] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:49:43,802 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:49:43,802 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:49:43,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76402476] [2021-07-13 19:49:43,802 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:49:43,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:49:43,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:49:43,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:49:43,803 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) [2021-07-13 19:49:44,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:49:44,687 INFO L93 Difference]: Finished difference Result 6649 states and 23153 transitions. [2021-07-13 19:49:44,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-13 19:49:44,688 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 [2021-07-13 19:49:44,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:49:44,701 INFO L225 Difference]: With dead ends: 6649 [2021-07-13 19:49:44,701 INFO L226 Difference]: Without dead ends: 6520 [2021-07-13 19:49:44,702 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 577.2ms TimeCoverageRelationStatistics Valid=141, Invalid=1341, Unknown=0, NotChecked=0, Total=1482 [2021-07-13 19:49:44,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6520 states. [2021-07-13 19:49:44,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6520 to 6224. [2021-07-13 19:49:44,791 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) [2021-07-13 19:49:44,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6224 states to 6224 states and 21756 transitions. [2021-07-13 19:49:44,806 INFO L78 Accepts]: Start accepts. Automaton has 6224 states and 21756 transitions. Word has length 47 [2021-07-13 19:49:44,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:49:44,806 INFO L482 AbstractCegarLoop]: Abstraction has 6224 states and 21756 transitions. [2021-07-13 19:49:44,806 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) [2021-07-13 19:49:44,806 INFO L276 IsEmpty]: Start isEmpty. Operand 6224 states and 21756 transitions. [2021-07-13 19:49:44,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:49:44,818 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:49:44,818 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] [2021-07-13 19:49:44,818 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-07-13 19:49:44,818 INFO L430 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:49:44,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:49:44,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1928645226, now seen corresponding path program 103 times [2021-07-13 19:49:44,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:49:44,818 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602841330] [2021-07-13 19:49:44,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:49:44,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:49:45,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:49:45,017 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:49:45,018 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602841330] [2021-07-13 19:49:45,018 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602841330] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:49:45,018 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:49:45,018 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:49:45,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370990725] [2021-07-13 19:49:45,018 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:49:45,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:49:45,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:49:45,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:49:45,018 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) [2021-07-13 19:49:45,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:49:45,928 INFO L93 Difference]: Finished difference Result 6692 states and 23264 transitions. [2021-07-13 19:49:45,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-07-13 19:49:45,929 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 [2021-07-13 19:49:45,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:49:45,943 INFO L225 Difference]: With dead ends: 6692 [2021-07-13 19:49:45,943 INFO L226 Difference]: Without dead ends: 6603 [2021-07-13 19:49:45,943 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 601.3ms TimeCoverageRelationStatistics Valid=154, Invalid=1486, Unknown=0, NotChecked=0, Total=1640 [2021-07-13 19:49:45,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6603 states. [2021-07-13 19:49:46,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6603 to 6224. [2021-07-13 19:49:46,072 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) [2021-07-13 19:49:46,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6224 states to 6224 states and 21756 transitions. [2021-07-13 19:49:46,086 INFO L78 Accepts]: Start accepts. Automaton has 6224 states and 21756 transitions. Word has length 47 [2021-07-13 19:49:46,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:49:46,086 INFO L482 AbstractCegarLoop]: Abstraction has 6224 states and 21756 transitions. [2021-07-13 19:49:46,086 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) [2021-07-13 19:49:46,086 INFO L276 IsEmpty]: Start isEmpty. Operand 6224 states and 21756 transitions. [2021-07-13 19:49:46,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:49:46,097 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:49:46,097 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] [2021-07-13 19:49:46,097 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-07-13 19:49:46,097 INFO L430 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:49:46,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:49:46,097 INFO L82 PathProgramCache]: Analyzing trace with hash 244182540, now seen corresponding path program 104 times [2021-07-13 19:49:46,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:49:46,098 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509182941] [2021-07-13 19:49:46,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:49:46,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:49:46,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:49:46,294 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:49:46,294 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509182941] [2021-07-13 19:49:46,294 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509182941] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:49:46,294 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:49:46,294 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:49:46,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425106828] [2021-07-13 19:49:46,294 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:49:46,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:49:46,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:49:46,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:49:46,294 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) [2021-07-13 19:49:47,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:49:47,158 INFO L93 Difference]: Finished difference Result 6700 states and 23292 transitions. [2021-07-13 19:49:47,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-07-13 19:49:47,158 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-13 19:49:47,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:49:47,172 INFO L225 Difference]: With dead ends: 6700 [2021-07-13 19:49:47,173 INFO L226 Difference]: Without dead ends: 6595 [2021-07-13 19:49:47,173 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 575.1ms TimeCoverageRelationStatistics Valid=149, Invalid=1411, Unknown=0, NotChecked=0, Total=1560 [2021-07-13 19:49:47,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6595 states. [2021-07-13 19:49:47,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6595 to 6240. [2021-07-13 19:49:47,268 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) [2021-07-13 19:49:47,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6240 states to 6240 states and 21804 transitions. [2021-07-13 19:49:47,282 INFO L78 Accepts]: Start accepts. Automaton has 6240 states and 21804 transitions. Word has length 47 [2021-07-13 19:49:47,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:49:47,283 INFO L482 AbstractCegarLoop]: Abstraction has 6240 states and 21804 transitions. [2021-07-13 19:49:47,283 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) [2021-07-13 19:49:47,283 INFO L276 IsEmpty]: Start isEmpty. Operand 6240 states and 21804 transitions. [2021-07-13 19:49:47,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:49:47,293 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:49:47,293 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] [2021-07-13 19:49:47,293 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-07-13 19:49:47,293 INFO L430 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:49:47,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:49:47,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1572879960, now seen corresponding path program 105 times [2021-07-13 19:49:47,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:49:47,294 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400007397] [2021-07-13 19:49:47,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:49:47,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:49:47,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:49:47,494 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:49:47,494 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400007397] [2021-07-13 19:49:47,494 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400007397] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:49:47,494 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:49:47,495 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:49:47,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5366137] [2021-07-13 19:49:47,495 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:49:47,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:49:47,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:49:47,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:49:47,495 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) [2021-07-13 19:49:48,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:49:48,359 INFO L93 Difference]: Finished difference Result 6593 states and 22965 transitions. [2021-07-13 19:49:48,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-13 19:49:48,359 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 [2021-07-13 19:49:48,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:49:48,374 INFO L225 Difference]: With dead ends: 6593 [2021-07-13 19:49:48,374 INFO L226 Difference]: Without dead ends: 6320 [2021-07-13 19:49:48,375 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 569.6ms TimeCoverageRelationStatistics Valid=137, Invalid=1269, Unknown=0, NotChecked=0, Total=1406 [2021-07-13 19:49:48,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6320 states. [2021-07-13 19:49:48,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6320 to 6112. [2021-07-13 19:49:48,464 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) [2021-07-13 19:49:48,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6112 states to 6112 states and 21412 transitions. [2021-07-13 19:49:48,478 INFO L78 Accepts]: Start accepts. Automaton has 6112 states and 21412 transitions. Word has length 47 [2021-07-13 19:49:48,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:49:48,479 INFO L482 AbstractCegarLoop]: Abstraction has 6112 states and 21412 transitions. [2021-07-13 19:49:48,479 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) [2021-07-13 19:49:48,479 INFO L276 IsEmpty]: Start isEmpty. Operand 6112 states and 21412 transitions. [2021-07-13 19:49:48,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:49:48,488 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:49:48,488 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] [2021-07-13 19:49:48,488 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-07-13 19:49:48,488 INFO L430 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:49:48,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:49:48,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1084388546, now seen corresponding path program 106 times [2021-07-13 19:49:48,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:49:48,489 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163369664] [2021-07-13 19:49:48,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:49:48,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:49:48,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:49:48,674 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:49:48,674 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163369664] [2021-07-13 19:49:48,674 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163369664] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:49:48,674 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:49:48,674 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 19:49:48,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959749385] [2021-07-13 19:49:48,674 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 19:49:48,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:49:48,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 19:49:48,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-07-13 19:49:48,675 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) [2021-07-13 19:49:49,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:49:49,546 INFO L93 Difference]: Finished difference Result 6837 states and 23807 transitions. [2021-07-13 19:49:49,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-07-13 19:49:49,547 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 [2021-07-13 19:49:49,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:49:49,561 INFO L225 Difference]: With dead ends: 6837 [2021-07-13 19:49:49,562 INFO L226 Difference]: Without dead ends: 6700 [2021-07-13 19:49:49,562 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 562.0ms TimeCoverageRelationStatistics Valid=149, Invalid=1333, Unknown=0, NotChecked=0, Total=1482 [2021-07-13 19:49:49,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6700 states. [2021-07-13 19:49:49,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6700 to 6132. [2021-07-13 19:49:49,673 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) [2021-07-13 19:49:49,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6132 states to 6132 states and 21478 transitions. [2021-07-13 19:49:49,686 INFO L78 Accepts]: Start accepts. Automaton has 6132 states and 21478 transitions. Word has length 47 [2021-07-13 19:49:49,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:49:49,686 INFO L482 AbstractCegarLoop]: Abstraction has 6132 states and 21478 transitions. [2021-07-13 19:49:49,686 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) [2021-07-13 19:49:49,686 INFO L276 IsEmpty]: Start isEmpty. Operand 6132 states and 21478 transitions. [2021-07-13 19:49:49,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:49:49,695 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:49:49,695 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] [2021-07-13 19:49:49,695 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-07-13 19:49:49,695 INFO L430 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:49:49,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:49:49,696 INFO L82 PathProgramCache]: Analyzing trace with hash 433307676, now seen corresponding path program 107 times [2021-07-13 19:49:49,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:49:49,696 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967754244] [2021-07-13 19:49:49,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:49:49,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:49:49,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:49:49,892 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:49:49,893 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967754244] [2021-07-13 19:49:49,893 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967754244] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:49:49,893 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:49:49,893 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:49:49,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266544906] [2021-07-13 19:49:49,893 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:49:49,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:49:49,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:49:49,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:49:49,893 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) [2021-07-13 19:49:50,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:49:50,897 INFO L93 Difference]: Finished difference Result 6896 states and 23966 transitions. [2021-07-13 19:49:50,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-07-13 19:49:50,898 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 [2021-07-13 19:49:50,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:49:50,913 INFO L225 Difference]: With dead ends: 6896 [2021-07-13 19:49:50,913 INFO L226 Difference]: Without dead ends: 6807 [2021-07-13 19:49:50,913 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 631.3ms TimeCoverageRelationStatistics Valid=167, Invalid=1555, Unknown=0, NotChecked=0, Total=1722 [2021-07-13 19:49:50,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6807 states. [2021-07-13 19:49:51,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6807 to 6196. [2021-07-13 19:49:51,008 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) [2021-07-13 19:49:51,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6196 states to 6196 states and 21694 transitions. [2021-07-13 19:49:51,023 INFO L78 Accepts]: Start accepts. Automaton has 6196 states and 21694 transitions. Word has length 47 [2021-07-13 19:49:51,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:49:51,023 INFO L482 AbstractCegarLoop]: Abstraction has 6196 states and 21694 transitions. [2021-07-13 19:49:51,023 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) [2021-07-13 19:49:51,023 INFO L276 IsEmpty]: Start isEmpty. Operand 6196 states and 21694 transitions. [2021-07-13 19:49:51,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:49:51,033 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:49:51,033 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] [2021-07-13 19:49:51,033 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-07-13 19:49:51,033 INFO L430 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:49:51,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:49:51,034 INFO L82 PathProgramCache]: Analyzing trace with hash 867337022, now seen corresponding path program 108 times [2021-07-13 19:49:51,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:49:51,034 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3228108] [2021-07-13 19:49:51,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:49:51,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:49:51,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:49:51,234 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:49:51,234 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3228108] [2021-07-13 19:49:51,234 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3228108] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:49:51,234 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:49:51,234 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:49:51,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973033058] [2021-07-13 19:49:51,234 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:49:51,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:49:51,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:49:51,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:49:51,234 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) [2021-07-13 19:49:52,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:49:52,266 INFO L93 Difference]: Finished difference Result 6805 states and 23695 transitions. [2021-07-13 19:49:52,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-13 19:49:52,267 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 [2021-07-13 19:49:52,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:49:52,281 INFO L225 Difference]: With dead ends: 6805 [2021-07-13 19:49:52,282 INFO L226 Difference]: Without dead ends: 6676 [2021-07-13 19:49:52,282 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 635.3ms TimeCoverageRelationStatistics Valid=159, Invalid=1481, Unknown=0, NotChecked=0, Total=1640 [2021-07-13 19:49:52,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6676 states. [2021-07-13 19:49:52,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6676 to 6196. [2021-07-13 19:49:52,379 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) [2021-07-13 19:49:52,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6196 states to 6196 states and 21670 transitions. [2021-07-13 19:49:52,394 INFO L78 Accepts]: Start accepts. Automaton has 6196 states and 21670 transitions. Word has length 47 [2021-07-13 19:49:52,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:49:52,394 INFO L482 AbstractCegarLoop]: Abstraction has 6196 states and 21670 transitions. [2021-07-13 19:49:52,394 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:49:52,394 INFO L276 IsEmpty]: Start isEmpty. Operand 6196 states and 21670 transitions. [2021-07-13 19:49:52,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:49:52,404 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:49:52,404 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] [2021-07-13 19:49:52,404 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-07-13 19:49:52,404 INFO L430 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:49:52,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:49:52,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1866196788, now seen corresponding path program 109 times [2021-07-13 19:49:52,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:49:52,405 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5734643] [2021-07-13 19:49:52,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:49:52,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:49:52,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:49:52,608 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:49:52,608 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5734643] [2021-07-13 19:49:52,608 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5734643] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:49:52,608 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:49:52,608 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:49:52,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643804192] [2021-07-13 19:49:52,608 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:49:52,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:49:52,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:49:52,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:49:52,609 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) [2021-07-13 19:49:53,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:49:53,625 INFO L93 Difference]: Finished difference Result 6944 states and 24142 transitions. [2021-07-13 19:49:53,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-07-13 19:49:53,625 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 [2021-07-13 19:49:53,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:49:53,639 INFO L225 Difference]: With dead ends: 6944 [2021-07-13 19:49:53,639 INFO L226 Difference]: Without dead ends: 6855 [2021-07-13 19:49:53,639 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 681.7ms TimeCoverageRelationStatistics Valid=181, Invalid=1711, Unknown=0, NotChecked=0, Total=1892 [2021-07-13 19:49:53,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6855 states. [2021-07-13 19:49:53,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6855 to 6196. [2021-07-13 19:49:53,730 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) [2021-07-13 19:49:53,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6196 states to 6196 states and 21670 transitions. [2021-07-13 19:49:53,743 INFO L78 Accepts]: Start accepts. Automaton has 6196 states and 21670 transitions. Word has length 47 [2021-07-13 19:49:53,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:49:53,743 INFO L482 AbstractCegarLoop]: Abstraction has 6196 states and 21670 transitions. [2021-07-13 19:49:53,743 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) [2021-07-13 19:49:53,743 INFO L276 IsEmpty]: Start isEmpty. Operand 6196 states and 21670 transitions. [2021-07-13 19:49:53,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:49:53,753 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:49:53,753 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] [2021-07-13 19:49:53,753 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-07-13 19:49:53,753 INFO L430 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:49:53,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:49:53,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1432167442, now seen corresponding path program 110 times [2021-07-13 19:49:53,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:49:53,753 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142971339] [2021-07-13 19:49:53,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:49:53,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:49:53,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:49:53,953 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:49:53,953 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142971339] [2021-07-13 19:49:53,954 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142971339] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:49:53,954 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:49:53,954 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:49:53,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709948508] [2021-07-13 19:49:53,954 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:49:53,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:49:53,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:49:53,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:49:53,954 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) [2021-07-13 19:49:54,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:49:54,927 INFO L93 Difference]: Finished difference Result 6952 states and 24170 transitions. [2021-07-13 19:49:54,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-07-13 19:49:54,928 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 [2021-07-13 19:49:54,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:49:54,943 INFO L225 Difference]: With dead ends: 6952 [2021-07-13 19:49:54,943 INFO L226 Difference]: Without dead ends: 6847 [2021-07-13 19:49:54,943 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 641.6ms TimeCoverageRelationStatistics Valid=176, Invalid=1630, Unknown=0, NotChecked=0, Total=1806 [2021-07-13 19:49:54,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6847 states. [2021-07-13 19:49:55,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6847 to 6212. [2021-07-13 19:49:55,067 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) [2021-07-13 19:49:55,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6212 states to 6212 states and 21718 transitions. [2021-07-13 19:49:55,082 INFO L78 Accepts]: Start accepts. Automaton has 6212 states and 21718 transitions. Word has length 47 [2021-07-13 19:49:55,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:49:55,082 INFO L482 AbstractCegarLoop]: Abstraction has 6212 states and 21718 transitions. [2021-07-13 19:49:55,082 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) [2021-07-13 19:49:55,082 INFO L276 IsEmpty]: Start isEmpty. Operand 6212 states and 21718 transitions. [2021-07-13 19:49:55,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:49:55,092 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:49:55,092 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] [2021-07-13 19:49:55,092 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-07-13 19:49:55,092 INFO L430 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:49:55,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:49:55,093 INFO L82 PathProgramCache]: Analyzing trace with hash -159233734, now seen corresponding path program 111 times [2021-07-13 19:49:55,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:49:55,093 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360398664] [2021-07-13 19:49:55,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:49:55,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:49:55,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:49:55,289 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:49:55,289 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360398664] [2021-07-13 19:49:55,289 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360398664] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:49:55,289 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:49:55,289 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:49:55,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370746207] [2021-07-13 19:49:55,289 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:49:55,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:49:55,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:49:55,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:49:55,289 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) [2021-07-13 19:49:56,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:49:56,345 INFO L93 Difference]: Finished difference Result 6861 states and 23891 transitions. [2021-07-13 19:49:56,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-07-13 19:49:56,346 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 [2021-07-13 19:49:56,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:49:56,359 INFO L225 Difference]: With dead ends: 6861 [2021-07-13 19:49:56,360 INFO L226 Difference]: Without dead ends: 6636 [2021-07-13 19:49:56,360 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 647.6ms TimeCoverageRelationStatistics Valid=178, Invalid=1714, Unknown=0, NotChecked=0, Total=1892 [2021-07-13 19:49:56,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6636 states. [2021-07-13 19:49:56,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6636 to 6132. [2021-07-13 19:49:56,448 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) [2021-07-13 19:49:56,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6132 states to 6132 states and 21462 transitions. [2021-07-13 19:49:56,460 INFO L78 Accepts]: Start accepts. Automaton has 6132 states and 21462 transitions. Word has length 47 [2021-07-13 19:49:56,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:49:56,460 INFO L482 AbstractCegarLoop]: Abstraction has 6132 states and 21462 transitions. [2021-07-13 19:49:56,461 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) [2021-07-13 19:49:56,461 INFO L276 IsEmpty]: Start isEmpty. Operand 6132 states and 21462 transitions. [2021-07-13 19:49:56,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:49:56,469 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:49:56,469 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] [2021-07-13 19:49:56,469 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-07-13 19:49:56,469 INFO L430 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:49:56,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:49:56,470 INFO L82 PathProgramCache]: Analyzing trace with hash 250908958, now seen corresponding path program 112 times [2021-07-13 19:49:56,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:49:56,470 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487831988] [2021-07-13 19:49:56,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:49:56,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:49:56,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:49:56,684 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:49:56,684 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487831988] [2021-07-13 19:49:56,684 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487831988] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:49:56,684 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:49:56,684 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:49:56,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901863972] [2021-07-13 19:49:56,684 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:49:56,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:49:56,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:49:56,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:49:56,685 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) [2021-07-13 19:49:57,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:49:57,650 INFO L93 Difference]: Finished difference Result 6885 states and 23895 transitions. [2021-07-13 19:49:57,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-13 19:49:57,650 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 [2021-07-13 19:49:57,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:49:57,664 INFO L225 Difference]: With dead ends: 6885 [2021-07-13 19:49:57,664 INFO L226 Difference]: Without dead ends: 6748 [2021-07-13 19:49:57,665 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 616.2ms TimeCoverageRelationStatistics Valid=160, Invalid=1480, Unknown=0, NotChecked=0, Total=1640 [2021-07-13 19:49:57,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6748 states. [2021-07-13 19:49:57,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6748 to 6138. [2021-07-13 19:49:57,758 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) [2021-07-13 19:49:57,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6138 states to 6138 states and 21483 transitions. [2021-07-13 19:49:57,772 INFO L78 Accepts]: Start accepts. Automaton has 6138 states and 21483 transitions. Word has length 47 [2021-07-13 19:49:57,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:49:57,772 INFO L482 AbstractCegarLoop]: Abstraction has 6138 states and 21483 transitions. [2021-07-13 19:49:57,772 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) [2021-07-13 19:49:57,772 INFO L276 IsEmpty]: Start isEmpty. Operand 6138 states and 21483 transitions. [2021-07-13 19:49:57,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:49:57,782 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:49:57,782 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] [2021-07-13 19:49:57,782 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-07-13 19:49:57,782 INFO L430 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:49:57,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:49:57,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1768605180, now seen corresponding path program 113 times [2021-07-13 19:49:57,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:49:57,782 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884831707] [2021-07-13 19:49:57,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:49:57,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:49:57,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:49:57,999 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:49:57,999 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884831707] [2021-07-13 19:49:57,999 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884831707] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:49:57,999 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:49:57,999 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:49:57,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827693310] [2021-07-13 19:49:57,999 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:49:58,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:49:58,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:49:58,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:49:58,000 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) [2021-07-13 19:49:59,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:49:59,084 INFO L93 Difference]: Finished difference Result 7035 states and 24317 transitions. [2021-07-13 19:49:59,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-07-13 19:49:59,084 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 [2021-07-13 19:49:59,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:49:59,098 INFO L225 Difference]: With dead ends: 7035 [2021-07-13 19:49:59,099 INFO L226 Difference]: Without dead ends: 6946 [2021-07-13 19:49:59,099 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 693.7ms TimeCoverageRelationStatistics Valid=188, Invalid=1792, Unknown=0, NotChecked=0, Total=1980 [2021-07-13 19:49:59,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6946 states. [2021-07-13 19:49:59,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6946 to 6138. [2021-07-13 19:49:59,193 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) [2021-07-13 19:49:59,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6138 states to 6138 states and 21483 transitions. [2021-07-13 19:49:59,207 INFO L78 Accepts]: Start accepts. Automaton has 6138 states and 21483 transitions. Word has length 47 [2021-07-13 19:49:59,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:49:59,207 INFO L482 AbstractCegarLoop]: Abstraction has 6138 states and 21483 transitions. [2021-07-13 19:49:59,207 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) [2021-07-13 19:49:59,207 INFO L276 IsEmpty]: Start isEmpty. Operand 6138 states and 21483 transitions. [2021-07-13 19:49:59,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:49:59,216 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:49:59,216 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] [2021-07-13 19:49:59,216 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-07-13 19:49:59,216 INFO L430 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:49:59,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:49:59,217 INFO L82 PathProgramCache]: Analyzing trace with hash -2092332770, now seen corresponding path program 114 times [2021-07-13 19:49:59,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:49:59,217 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598551110] [2021-07-13 19:49:59,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:49:59,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:49:59,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:49:59,450 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:49:59,450 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598551110] [2021-07-13 19:49:59,450 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598551110] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:49:59,450 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:49:59,450 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:49:59,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569283485] [2021-07-13 19:49:59,451 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:49:59,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:49:59,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:49:59,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:49:59,451 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) [2021-07-13 19:50:00,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:50:00,505 INFO L93 Difference]: Finished difference Result 6944 states and 24046 transitions. [2021-07-13 19:50:00,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-07-13 19:50:00,505 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 [2021-07-13 19:50:00,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:50:00,520 INFO L225 Difference]: With dead ends: 6944 [2021-07-13 19:50:00,520 INFO L226 Difference]: Without dead ends: 6815 [2021-07-13 19:50:00,521 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 679.2ms TimeCoverageRelationStatistics Valid=177, Invalid=1715, Unknown=0, NotChecked=0, Total=1892 [2021-07-13 19:50:00,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6815 states. [2021-07-13 19:50:00,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6815 to 6138. [2021-07-13 19:50:00,637 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) [2021-07-13 19:50:00,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6138 states to 6138 states and 21477 transitions. [2021-07-13 19:50:00,651 INFO L78 Accepts]: Start accepts. Automaton has 6138 states and 21477 transitions. Word has length 47 [2021-07-13 19:50:00,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:50:00,651 INFO L482 AbstractCegarLoop]: Abstraction has 6138 states and 21477 transitions. [2021-07-13 19:50:00,651 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) [2021-07-13 19:50:00,651 INFO L276 IsEmpty]: Start isEmpty. Operand 6138 states and 21477 transitions. [2021-07-13 19:50:00,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:50:00,661 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:50:00,661 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] [2021-07-13 19:50:00,661 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-07-13 19:50:00,662 INFO L430 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:50:00,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:50:00,662 INFO L82 PathProgramCache]: Analyzing trace with hash 417094076, now seen corresponding path program 115 times [2021-07-13 19:50:00,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:50:00,662 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729945112] [2021-07-13 19:50:00,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:50:00,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:50:00,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:50:00,874 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:50:00,874 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729945112] [2021-07-13 19:50:00,874 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729945112] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:50:00,874 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:50:00,874 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:50:00,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427068319] [2021-07-13 19:50:00,875 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:50:00,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:50:00,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:50:00,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:50:00,875 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) [2021-07-13 19:50:03,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:50:03,550 INFO L93 Difference]: Finished difference Result 9355 states and 32755 transitions. [2021-07-13 19:50:03,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-07-13 19:50:03,550 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 [2021-07-13 19:50:03,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:50:03,571 INFO L225 Difference]: With dead ends: 9355 [2021-07-13 19:50:03,571 INFO L226 Difference]: Without dead ends: 9218 [2021-07-13 19:50:03,572 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1221 ImplicationChecksByTransitivity, 1482.9ms TimeCoverageRelationStatistics Valid=404, Invalid=4152, Unknown=0, NotChecked=0, Total=4556 [2021-07-13 19:50:03,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9218 states. [2021-07-13 19:50:03,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9218 to 6184. [2021-07-13 19:50:03,690 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) [2021-07-13 19:50:03,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6184 states to 6184 states and 21612 transitions. [2021-07-13 19:50:03,705 INFO L78 Accepts]: Start accepts. Automaton has 6184 states and 21612 transitions. Word has length 47 [2021-07-13 19:50:03,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:50:03,705 INFO L482 AbstractCegarLoop]: Abstraction has 6184 states and 21612 transitions. [2021-07-13 19:50:03,705 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) [2021-07-13 19:50:03,705 INFO L276 IsEmpty]: Start isEmpty. Operand 6184 states and 21612 transitions. [2021-07-13 19:50:03,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:50:03,716 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:50:03,716 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] [2021-07-13 19:50:03,717 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-07-13 19:50:03,717 INFO L430 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:50:03,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:50:03,717 INFO L82 PathProgramCache]: Analyzing trace with hash 403562654, now seen corresponding path program 116 times [2021-07-13 19:50:03,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:50:03,717 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015545049] [2021-07-13 19:50:03,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:50:03,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:50:03,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:50:03,950 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:50:03,950 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015545049] [2021-07-13 19:50:03,950 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015545049] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:50:03,950 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:50:03,950 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:50:03,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833072246] [2021-07-13 19:50:03,950 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:50:03,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:50:03,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:50:03,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:50:03,951 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) [2021-07-13 19:50:07,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:50:07,161 INFO L93 Difference]: Finished difference Result 10525 states and 37110 transitions. [2021-07-13 19:50:07,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-07-13 19:50:07,161 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 [2021-07-13 19:50:07,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:50:07,186 INFO L225 Difference]: With dead ends: 10525 [2021-07-13 19:50:07,186 INFO L226 Difference]: Without dead ends: 10436 [2021-07-13 19:50:07,187 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1543 ImplicationChecksByTransitivity, 1864.9ms TimeCoverageRelationStatistics Valid=531, Invalid=5019, Unknown=0, NotChecked=0, Total=5550 [2021-07-13 19:50:07,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10436 states. [2021-07-13 19:50:07,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10436 to 6188. [2021-07-13 19:50:07,314 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) [2021-07-13 19:50:07,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6188 states to 6188 states and 21620 transitions. [2021-07-13 19:50:07,328 INFO L78 Accepts]: Start accepts. Automaton has 6188 states and 21620 transitions. Word has length 47 [2021-07-13 19:50:07,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:50:07,329 INFO L482 AbstractCegarLoop]: Abstraction has 6188 states and 21620 transitions. [2021-07-13 19:50:07,329 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) [2021-07-13 19:50:07,329 INFO L276 IsEmpty]: Start isEmpty. Operand 6188 states and 21620 transitions. [2021-07-13 19:50:07,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:50:07,339 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:50:07,339 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] [2021-07-13 19:50:07,339 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-07-13 19:50:07,339 INFO L430 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:50:07,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:50:07,339 INFO L82 PathProgramCache]: Analyzing trace with hash -447089254, now seen corresponding path program 117 times [2021-07-13 19:50:07,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:50:07,339 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843420329] [2021-07-13 19:50:07,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:50:07,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:50:07,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:50:07,567 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:50:07,567 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843420329] [2021-07-13 19:50:07,567 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843420329] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:50:07,567 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:50:07,567 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:50:07,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597303449] [2021-07-13 19:50:07,567 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:50:07,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:50:07,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:50:07,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:50:07,568 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) [2021-07-13 19:50:10,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:50:10,505 INFO L93 Difference]: Finished difference Result 10604 states and 37526 transitions. [2021-07-13 19:50:10,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-07-13 19:50:10,506 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 [2021-07-13 19:50:10,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:50:10,529 INFO L225 Difference]: With dead ends: 10604 [2021-07-13 19:50:10,529 INFO L226 Difference]: Without dead ends: 10497 [2021-07-13 19:50:10,530 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1386 ImplicationChecksByTransitivity, 1700.3ms TimeCoverageRelationStatistics Valid=484, Invalid=4628, Unknown=0, NotChecked=0, Total=5112 [2021-07-13 19:50:10,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10497 states. [2021-07-13 19:50:10,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10497 to 6146. [2021-07-13 19:50:10,653 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) [2021-07-13 19:50:10,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6146 states to 6146 states and 21495 transitions. [2021-07-13 19:50:10,667 INFO L78 Accepts]: Start accepts. Automaton has 6146 states and 21495 transitions. Word has length 47 [2021-07-13 19:50:10,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:50:10,668 INFO L482 AbstractCegarLoop]: Abstraction has 6146 states and 21495 transitions. [2021-07-13 19:50:10,668 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) [2021-07-13 19:50:10,668 INFO L276 IsEmpty]: Start isEmpty. Operand 6146 states and 21495 transitions. [2021-07-13 19:50:10,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:50:10,678 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:50:10,678 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] [2021-07-13 19:50:10,678 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-07-13 19:50:10,678 INFO L430 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:50:10,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:50:10,679 INFO L82 PathProgramCache]: Analyzing trace with hash -546455394, now seen corresponding path program 118 times [2021-07-13 19:50:10,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:50:10,679 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373717535] [2021-07-13 19:50:10,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:50:10,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:50:10,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:50:10,912 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:50:10,912 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373717535] [2021-07-13 19:50:10,912 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373717535] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:50:10,912 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:50:10,912 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:50:10,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152927633] [2021-07-13 19:50:10,913 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:50:10,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:50:10,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:50:10,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:50:10,913 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) [2021-07-13 19:50:12,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:50:12,111 INFO L93 Difference]: Finished difference Result 7096 states and 24509 transitions. [2021-07-13 19:50:12,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-07-13 19:50:12,111 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 [2021-07-13 19:50:12,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:50:12,127 INFO L225 Difference]: With dead ends: 7096 [2021-07-13 19:50:12,127 INFO L226 Difference]: Without dead ends: 7007 [2021-07-13 19:50:12,127 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 778.5ms TimeCoverageRelationStatistics Valid=203, Invalid=1959, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 19:50:12,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7007 states. [2021-07-13 19:50:12,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7007 to 6148. [2021-07-13 19:50:12,223 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) [2021-07-13 19:50:12,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6148 states to 6148 states and 21502 transitions. [2021-07-13 19:50:12,239 INFO L78 Accepts]: Start accepts. Automaton has 6148 states and 21502 transitions. Word has length 47 [2021-07-13 19:50:12,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:50:12,239 INFO L482 AbstractCegarLoop]: Abstraction has 6148 states and 21502 transitions. [2021-07-13 19:50:12,239 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) [2021-07-13 19:50:12,239 INFO L276 IsEmpty]: Start isEmpty. Operand 6148 states and 21502 transitions. [2021-07-13 19:50:12,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:50:12,248 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:50:12,249 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] [2021-07-13 19:50:12,249 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-07-13 19:50:12,249 INFO L430 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:50:12,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:50:12,249 INFO L82 PathProgramCache]: Analyzing trace with hash -870117218, now seen corresponding path program 119 times [2021-07-13 19:50:12,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:50:12,249 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21037626] [2021-07-13 19:50:12,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:50:12,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:50:12,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:50:12,513 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:50:12,513 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21037626] [2021-07-13 19:50:12,513 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21037626] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:50:12,513 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:50:12,513 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:50:12,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454666759] [2021-07-13 19:50:12,514 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:50:12,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:50:12,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:50:12,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:50:12,514 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) [2021-07-13 19:50:13,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:50:13,749 INFO L93 Difference]: Finished difference Result 7104 states and 24537 transitions. [2021-07-13 19:50:13,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-07-13 19:50:13,749 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 [2021-07-13 19:50:13,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:50:13,765 INFO L225 Difference]: With dead ends: 7104 [2021-07-13 19:50:13,765 INFO L226 Difference]: Without dead ends: 6999 [2021-07-13 19:50:13,765 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 787.4ms TimeCoverageRelationStatistics Valid=191, Invalid=1879, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:50:13,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6999 states. [2021-07-13 19:50:13,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6999 to 6148. [2021-07-13 19:50:13,866 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) [2021-07-13 19:50:13,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6148 states to 6148 states and 21500 transitions. [2021-07-13 19:50:13,880 INFO L78 Accepts]: Start accepts. Automaton has 6148 states and 21500 transitions. Word has length 47 [2021-07-13 19:50:13,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:50:13,881 INFO L482 AbstractCegarLoop]: Abstraction has 6148 states and 21500 transitions. [2021-07-13 19:50:13,881 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) [2021-07-13 19:50:13,881 INFO L276 IsEmpty]: Start isEmpty. Operand 6148 states and 21500 transitions. [2021-07-13 19:50:13,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:50:13,891 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:50:13,891 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] [2021-07-13 19:50:13,891 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-07-13 19:50:13,891 INFO L430 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:50:13,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:50:13,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1800083644, now seen corresponding path program 120 times [2021-07-13 19:50:13,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:50:13,892 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366339929] [2021-07-13 19:50:13,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:50:13,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:50:14,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:50:14,120 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:50:14,120 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366339929] [2021-07-13 19:50:14,120 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366339929] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:50:14,120 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:50:14,120 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:50:14,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330595247] [2021-07-13 19:50:14,120 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:50:14,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:50:14,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:50:14,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:50:14,120 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) [2021-07-13 19:50:15,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:50:15,633 INFO L93 Difference]: Finished difference Result 7685 states and 26629 transitions. [2021-07-13 19:50:15,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-07-13 19:50:15,633 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 [2021-07-13 19:50:15,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:50:15,650 INFO L225 Difference]: With dead ends: 7685 [2021-07-13 19:50:15,650 INFO L226 Difference]: Without dead ends: 7596 [2021-07-13 19:50:15,650 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 901.1ms TimeCoverageRelationStatistics Valid=225, Invalid=2225, Unknown=0, NotChecked=0, Total=2450 [2021-07-13 19:50:15,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7596 states. [2021-07-13 19:50:15,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7596 to 6252. [2021-07-13 19:50:15,754 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) [2021-07-13 19:50:15,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6252 states to 6252 states and 21836 transitions. [2021-07-13 19:50:15,769 INFO L78 Accepts]: Start accepts. Automaton has 6252 states and 21836 transitions. Word has length 47 [2021-07-13 19:50:15,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:50:15,769 INFO L482 AbstractCegarLoop]: Abstraction has 6252 states and 21836 transitions. [2021-07-13 19:50:15,769 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) [2021-07-13 19:50:15,769 INFO L276 IsEmpty]: Start isEmpty. Operand 6252 states and 21836 transitions. [2021-07-13 19:50:15,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:50:15,780 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:50:15,780 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] [2021-07-13 19:50:15,780 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-07-13 19:50:15,780 INFO L430 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:50:15,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:50:15,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1024966042, now seen corresponding path program 121 times [2021-07-13 19:50:15,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:50:15,780 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118239187] [2021-07-13 19:50:15,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:50:15,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:50:15,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:50:15,999 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:50:15,999 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118239187] [2021-07-13 19:50:15,999 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118239187] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:50:15,999 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:50:15,999 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:50:15,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909924684] [2021-07-13 19:50:15,999 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:50:15,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:50:15,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:50:16,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:50:16,000 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) [2021-07-13 19:50:17,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:50:17,418 INFO L93 Difference]: Finished difference Result 7687 states and 26622 transitions. [2021-07-13 19:50:17,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-07-13 19:50:17,419 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 [2021-07-13 19:50:17,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:50:17,437 INFO L225 Difference]: With dead ends: 7687 [2021-07-13 19:50:17,437 INFO L226 Difference]: Without dead ends: 7592 [2021-07-13 19:50:17,437 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 859.8ms TimeCoverageRelationStatistics Valid=213, Invalid=2139, Unknown=0, NotChecked=0, Total=2352 [2021-07-13 19:50:17,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7592 states. [2021-07-13 19:50:17,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7592 to 6232. [2021-07-13 19:50:17,542 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) [2021-07-13 19:50:17,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6232 states to 6232 states and 21792 transitions. [2021-07-13 19:50:17,556 INFO L78 Accepts]: Start accepts. Automaton has 6232 states and 21792 transitions. Word has length 47 [2021-07-13 19:50:17,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:50:17,556 INFO L482 AbstractCegarLoop]: Abstraction has 6232 states and 21792 transitions. [2021-07-13 19:50:17,556 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) [2021-07-13 19:50:17,557 INFO L276 IsEmpty]: Start isEmpty. Operand 6232 states and 21792 transitions. [2021-07-13 19:50:17,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:50:17,566 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:50:17,566 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] [2021-07-13 19:50:17,566 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-07-13 19:50:17,566 INFO L430 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:50:17,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:50:17,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1323857720, now seen corresponding path program 122 times [2021-07-13 19:50:17,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:50:17,567 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446444235] [2021-07-13 19:50:17,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:50:17,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:50:17,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:50:17,784 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:50:17,784 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446444235] [2021-07-13 19:50:17,784 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446444235] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:50:17,784 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:50:17,784 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:50:17,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199579282] [2021-07-13 19:50:17,784 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:50:17,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:50:17,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:50:17,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:50:17,785 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) [2021-07-13 19:50:18,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:50:18,868 INFO L93 Difference]: Finished difference Result 7069 states and 24460 transitions. [2021-07-13 19:50:18,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-07-13 19:50:18,869 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 [2021-07-13 19:50:18,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:50:18,883 INFO L225 Difference]: With dead ends: 7069 [2021-07-13 19:50:18,884 INFO L226 Difference]: Without dead ends: 6972 [2021-07-13 19:50:18,884 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 690.1ms TimeCoverageRelationStatistics Valid=171, Invalid=1721, Unknown=0, NotChecked=0, Total=1892 [2021-07-13 19:50:18,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6972 states. [2021-07-13 19:50:19,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6972 to 6246. [2021-07-13 19:50:19,007 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) [2021-07-13 19:50:19,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6246 states to 6246 states and 21819 transitions. [2021-07-13 19:50:19,021 INFO L78 Accepts]: Start accepts. Automaton has 6246 states and 21819 transitions. Word has length 47 [2021-07-13 19:50:19,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:50:19,021 INFO L482 AbstractCegarLoop]: Abstraction has 6246 states and 21819 transitions. [2021-07-13 19:50:19,021 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) [2021-07-13 19:50:19,021 INFO L276 IsEmpty]: Start isEmpty. Operand 6246 states and 21819 transitions. [2021-07-13 19:50:19,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:50:19,032 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:50:19,032 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] [2021-07-13 19:50:19,032 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-07-13 19:50:19,032 INFO L430 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:50:19,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:50:19,032 INFO L82 PathProgramCache]: Analyzing trace with hash -401562790, now seen corresponding path program 123 times [2021-07-13 19:50:19,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:50:19,033 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129484530] [2021-07-13 19:50:19,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:50:19,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:50:19,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:50:19,271 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:50:19,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129484530] [2021-07-13 19:50:19,271 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129484530] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:50:19,271 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:50:19,271 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:50:19,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759907633] [2021-07-13 19:50:19,271 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:50:19,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:50:19,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:50:19,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:50:19,272 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) [2021-07-13 19:50:20,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:50:20,337 INFO L93 Difference]: Finished difference Result 7045 states and 24370 transitions. [2021-07-13 19:50:20,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-07-13 19:50:20,338 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 [2021-07-13 19:50:20,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:50:20,354 INFO L225 Difference]: With dead ends: 7045 [2021-07-13 19:50:20,354 INFO L226 Difference]: Without dead ends: 6940 [2021-07-13 19:50:20,354 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 688.8ms TimeCoverageRelationStatistics Valid=171, Invalid=1721, Unknown=0, NotChecked=0, Total=1892 [2021-07-13 19:50:20,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6940 states. [2021-07-13 19:50:20,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6940 to 6232. [2021-07-13 19:50:20,455 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) [2021-07-13 19:50:20,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6232 states to 6232 states and 21786 transitions. [2021-07-13 19:50:20,470 INFO L78 Accepts]: Start accepts. Automaton has 6232 states and 21786 transitions. Word has length 47 [2021-07-13 19:50:20,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:50:20,470 INFO L482 AbstractCegarLoop]: Abstraction has 6232 states and 21786 transitions. [2021-07-13 19:50:20,470 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) [2021-07-13 19:50:20,470 INFO L276 IsEmpty]: Start isEmpty. Operand 6232 states and 21786 transitions. [2021-07-13 19:50:20,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:50:20,481 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:50:20,481 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] [2021-07-13 19:50:20,481 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-07-13 19:50:20,481 INFO L430 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:50:20,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:50:20,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1918004954, now seen corresponding path program 124 times [2021-07-13 19:50:20,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:50:20,481 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256087753] [2021-07-13 19:50:20,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:50:20,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:50:20,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:50:20,703 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:50:20,703 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256087753] [2021-07-13 19:50:20,704 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256087753] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:50:20,704 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:50:20,704 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:50:20,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391412944] [2021-07-13 19:50:20,704 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:50:20,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:50:20,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:50:20,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:50:20,704 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) [2021-07-13 19:50:21,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:50:21,884 INFO L93 Difference]: Finished difference Result 6956 states and 24174 transitions. [2021-07-13 19:50:21,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-07-13 19:50:21,884 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 [2021-07-13 19:50:21,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:50:21,899 INFO L225 Difference]: With dead ends: 6956 [2021-07-13 19:50:21,899 INFO L226 Difference]: Without dead ends: 6867 [2021-07-13 19:50:21,900 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 807.6ms TimeCoverageRelationStatistics Valid=204, Invalid=1958, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 19:50:21,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6867 states. [2021-07-13 19:50:21,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6867 to 6236. [2021-07-13 19:50:21,993 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) [2021-07-13 19:50:22,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6236 states to 6236 states and 21800 transitions. [2021-07-13 19:50:22,008 INFO L78 Accepts]: Start accepts. Automaton has 6236 states and 21800 transitions. Word has length 47 [2021-07-13 19:50:22,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:50:22,008 INFO L482 AbstractCegarLoop]: Abstraction has 6236 states and 21800 transitions. [2021-07-13 19:50:22,008 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) [2021-07-13 19:50:22,008 INFO L276 IsEmpty]: Start isEmpty. Operand 6236 states and 21800 transitions. [2021-07-13 19:50:22,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:50:22,018 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:50:22,018 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] [2021-07-13 19:50:22,019 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-07-13 19:50:22,019 INFO L430 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:50:22,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:50:22,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1594343130, now seen corresponding path program 125 times [2021-07-13 19:50:22,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:50:22,019 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801678496] [2021-07-13 19:50:22,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:50:22,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:50:22,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:50:22,284 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:50:22,284 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801678496] [2021-07-13 19:50:22,284 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801678496] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:50:22,284 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:50:22,284 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:50:22,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684881600] [2021-07-13 19:50:22,284 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:50:22,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:50:22,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:50:22,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:50:22,285 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) [2021-07-13 19:50:23,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:50:23,420 INFO L93 Difference]: Finished difference Result 6964 states and 24202 transitions. [2021-07-13 19:50:23,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-07-13 19:50:23,421 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 [2021-07-13 19:50:23,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:50:23,437 INFO L225 Difference]: With dead ends: 6964 [2021-07-13 19:50:23,437 INFO L226 Difference]: Without dead ends: 6859 [2021-07-13 19:50:23,437 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 790.7ms TimeCoverageRelationStatistics Valid=201, Invalid=1869, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:50:23,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6859 states. [2021-07-13 19:50:23,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6859 to 6252. [2021-07-13 19:50:23,538 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) [2021-07-13 19:50:23,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6252 states to 6252 states and 21848 transitions. [2021-07-13 19:50:23,553 INFO L78 Accepts]: Start accepts. Automaton has 6252 states and 21848 transitions. Word has length 47 [2021-07-13 19:50:23,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:50:23,553 INFO L482 AbstractCegarLoop]: Abstraction has 6252 states and 21848 transitions. [2021-07-13 19:50:23,553 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) [2021-07-13 19:50:23,554 INFO L276 IsEmpty]: Start isEmpty. Operand 6252 states and 21848 transitions. [2021-07-13 19:50:23,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:50:23,564 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:50:23,564 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] [2021-07-13 19:50:23,564 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-07-13 19:50:23,564 INFO L430 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:50:23,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:50:23,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1650454584, now seen corresponding path program 126 times [2021-07-13 19:50:23,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:50:23,565 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256856321] [2021-07-13 19:50:23,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:50:23,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:50:23,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:50:23,790 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:50:23,790 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256856321] [2021-07-13 19:50:23,790 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256856321] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:50:23,790 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:50:23,790 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:50:23,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391065149] [2021-07-13 19:50:23,791 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:50:23,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:50:23,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:50:23,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:50:23,791 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) [2021-07-13 19:50:25,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:50:25,024 INFO L93 Difference]: Finished difference Result 6933 states and 24139 transitions. [2021-07-13 19:50:25,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-07-13 19:50:25,024 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 [2021-07-13 19:50:25,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:50:25,039 INFO L225 Difference]: With dead ends: 6933 [2021-07-13 19:50:25,039 INFO L226 Difference]: Without dead ends: 6772 [2021-07-13 19:50:25,039 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 820.7ms TimeCoverageRelationStatistics Valid=223, Invalid=2129, Unknown=0, NotChecked=0, Total=2352 [2021-07-13 19:50:25,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6772 states. [2021-07-13 19:50:25,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6772 to 6236. [2021-07-13 19:50:25,131 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) [2021-07-13 19:50:25,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6236 states to 6236 states and 21796 transitions. [2021-07-13 19:50:25,146 INFO L78 Accepts]: Start accepts. Automaton has 6236 states and 21796 transitions. Word has length 47 [2021-07-13 19:50:25,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:50:25,146 INFO L482 AbstractCegarLoop]: Abstraction has 6236 states and 21796 transitions. [2021-07-13 19:50:25,147 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) [2021-07-13 19:50:25,147 INFO L276 IsEmpty]: Start isEmpty. Operand 6236 states and 21796 transitions. [2021-07-13 19:50:25,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:50:25,157 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:50:25,158 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] [2021-07-13 19:50:25,158 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-07-13 19:50:25,158 INFO L430 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:50:25,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:50:25,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1800513212, now seen corresponding path program 127 times [2021-07-13 19:50:25,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:50:25,158 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882866819] [2021-07-13 19:50:25,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:50:25,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:50:25,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:50:25,380 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:50:25,380 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882866819] [2021-07-13 19:50:25,380 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882866819] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:50:25,380 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:50:25,380 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:50:25,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628195199] [2021-07-13 19:50:25,381 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:50:25,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:50:25,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:50:25,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:50:25,381 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) [2021-07-13 19:50:26,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:50:26,516 INFO L93 Difference]: Finished difference Result 7096 states and 24537 transitions. [2021-07-13 19:50:26,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-07-13 19:50:26,517 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 [2021-07-13 19:50:26,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:50:26,532 INFO L225 Difference]: With dead ends: 7096 [2021-07-13 19:50:26,533 INFO L226 Difference]: Without dead ends: 7007 [2021-07-13 19:50:26,533 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 751.1ms TimeCoverageRelationStatistics Valid=194, Invalid=1876, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:50:26,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7007 states. [2021-07-13 19:50:26,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7007 to 6238. [2021-07-13 19:50:26,648 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) [2021-07-13 19:50:26,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6238 states to 6238 states and 21803 transitions. [2021-07-13 19:50:26,661 INFO L78 Accepts]: Start accepts. Automaton has 6238 states and 21803 transitions. Word has length 47 [2021-07-13 19:50:26,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:50:26,661 INFO L482 AbstractCegarLoop]: Abstraction has 6238 states and 21803 transitions. [2021-07-13 19:50:26,661 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) [2021-07-13 19:50:26,662 INFO L276 IsEmpty]: Start isEmpty. Operand 6238 states and 21803 transitions. [2021-07-13 19:50:26,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:50:26,671 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:50:26,671 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] [2021-07-13 19:50:26,671 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2021-07-13 19:50:26,671 INFO L430 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:50:26,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:50:26,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1476851388, now seen corresponding path program 128 times [2021-07-13 19:50:26,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:50:26,672 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509653939] [2021-07-13 19:50:26,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:50:26,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:50:26,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:50:26,890 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:50:26,890 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509653939] [2021-07-13 19:50:26,890 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509653939] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:50:26,890 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:50:26,890 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:50:26,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518032663] [2021-07-13 19:50:26,891 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:50:26,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:50:26,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:50:26,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:50:26,892 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) [2021-07-13 19:50:28,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:50:28,032 INFO L93 Difference]: Finished difference Result 7104 states and 24565 transitions. [2021-07-13 19:50:28,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-07-13 19:50:28,032 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 [2021-07-13 19:50:28,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:50:28,047 INFO L225 Difference]: With dead ends: 7104 [2021-07-13 19:50:28,047 INFO L226 Difference]: Without dead ends: 6999 [2021-07-13 19:50:28,048 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 746.2ms TimeCoverageRelationStatistics Valid=196, Invalid=1874, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:50:28,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6999 states. [2021-07-13 19:50:28,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6999 to 6238. [2021-07-13 19:50:28,148 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) [2021-07-13 19:50:28,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6238 states to 6238 states and 21801 transitions. [2021-07-13 19:50:28,163 INFO L78 Accepts]: Start accepts. Automaton has 6238 states and 21801 transitions. Word has length 47 [2021-07-13 19:50:28,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:50:28,164 INFO L482 AbstractCegarLoop]: Abstraction has 6238 states and 21801 transitions. [2021-07-13 19:50:28,164 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) [2021-07-13 19:50:28,164 INFO L276 IsEmpty]: Start isEmpty. Operand 6238 states and 21801 transitions. [2021-07-13 19:50:28,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:50:28,174 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:50:28,175 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] [2021-07-13 19:50:28,175 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-07-13 19:50:28,175 INFO L430 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:50:28,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:50:28,175 INFO L82 PathProgramCache]: Analyzing trace with hash -147915046, now seen corresponding path program 129 times [2021-07-13 19:50:28,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:50:28,175 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154797185] [2021-07-13 19:50:28,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:50:28,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:50:28,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:50:28,485 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:50:28,485 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154797185] [2021-07-13 19:50:28,486 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154797185] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:50:28,486 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:50:28,486 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:50:28,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015792857] [2021-07-13 19:50:28,486 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:50:28,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:50:28,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:50:28,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:50:28,486 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) [2021-07-13 19:50:30,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:50:30,115 INFO L93 Difference]: Finished difference Result 8205 states and 28472 transitions. [2021-07-13 19:50:30,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-07-13 19:50:30,115 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 [2021-07-13 19:50:30,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:50:30,133 INFO L225 Difference]: With dead ends: 8205 [2021-07-13 19:50:30,133 INFO L226 Difference]: Without dead ends: 8100 [2021-07-13 19:50:30,134 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 1030.0ms TimeCoverageRelationStatistics Valid=250, Invalid=2506, Unknown=0, NotChecked=0, Total=2756 [2021-07-13 19:50:30,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8100 states. [2021-07-13 19:50:30,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8100 to 6184. [2021-07-13 19:50:30,238 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) [2021-07-13 19:50:30,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6184 states to 6184 states and 21614 transitions. [2021-07-13 19:50:30,253 INFO L78 Accepts]: Start accepts. Automaton has 6184 states and 21614 transitions. Word has length 47 [2021-07-13 19:50:30,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:50:30,253 INFO L482 AbstractCegarLoop]: Abstraction has 6184 states and 21614 transitions. [2021-07-13 19:50:30,253 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) [2021-07-13 19:50:30,253 INFO L276 IsEmpty]: Start isEmpty. Operand 6184 states and 21614 transitions. [2021-07-13 19:50:30,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:50:30,264 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:50:30,264 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] [2021-07-13 19:50:30,264 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-07-13 19:50:30,264 INFO L430 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:50:30,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:50:30,264 INFO L82 PathProgramCache]: Analyzing trace with hash -923032648, now seen corresponding path program 130 times [2021-07-13 19:50:30,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:50:30,265 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387921183] [2021-07-13 19:50:30,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:50:30,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:50:30,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:50:30,537 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:50:30,537 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387921183] [2021-07-13 19:50:30,537 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387921183] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:50:30,537 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:50:30,537 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:50:30,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335960971] [2021-07-13 19:50:30,537 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:50:30,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:50:30,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:50:30,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:50:30,537 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) [2021-07-13 19:50:32,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:50:32,194 INFO L93 Difference]: Finished difference Result 8191 states and 28417 transitions. [2021-07-13 19:50:32,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-07-13 19:50:32,195 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 [2021-07-13 19:50:32,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:50:32,214 INFO L225 Difference]: With dead ends: 8191 [2021-07-13 19:50:32,214 INFO L226 Difference]: Without dead ends: 8096 [2021-07-13 19:50:32,214 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 932.3ms TimeCoverageRelationStatistics Valid=242, Invalid=2410, Unknown=0, NotChecked=0, Total=2652 [2021-07-13 19:50:32,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8096 states. [2021-07-13 19:50:32,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8096 to 6148. [2021-07-13 19:50:32,323 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) [2021-07-13 19:50:32,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6148 states to 6148 states and 21504 transitions. [2021-07-13 19:50:32,338 INFO L78 Accepts]: Start accepts. Automaton has 6148 states and 21504 transitions. Word has length 47 [2021-07-13 19:50:32,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:50:32,338 INFO L482 AbstractCegarLoop]: Abstraction has 6148 states and 21504 transitions. [2021-07-13 19:50:32,338 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) [2021-07-13 19:50:32,338 INFO L276 IsEmpty]: Start isEmpty. Operand 6148 states and 21504 transitions. [2021-07-13 19:50:32,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:50:32,349 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:50:32,349 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] [2021-07-13 19:50:32,349 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2021-07-13 19:50:32,349 INFO L430 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:50:32,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:50:32,349 INFO L82 PathProgramCache]: Analyzing trace with hash -624140970, now seen corresponding path program 131 times [2021-07-13 19:50:32,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:50:32,349 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67222470] [2021-07-13 19:50:32,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:50:32,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:50:32,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:50:32,614 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:50:32,614 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67222470] [2021-07-13 19:50:32,614 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67222470] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:50:32,614 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:50:32,614 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:50:32,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404130827] [2021-07-13 19:50:32,614 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:50:32,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:50:32,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:50:32,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:50:32,615 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) [2021-07-13 19:50:33,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:50:33,743 INFO L93 Difference]: Finished difference Result 7016 states and 24273 transitions. [2021-07-13 19:50:33,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-07-13 19:50:33,744 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 [2021-07-13 19:50:33,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:50:33,759 INFO L225 Difference]: With dead ends: 7016 [2021-07-13 19:50:33,759 INFO L226 Difference]: Without dead ends: 6919 [2021-07-13 19:50:33,760 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 765.4ms TimeCoverageRelationStatistics Valid=184, Invalid=1796, Unknown=0, NotChecked=0, Total=1980 [2021-07-13 19:50:33,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6919 states. [2021-07-13 19:50:33,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6919 to 6160. [2021-07-13 19:50:33,858 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) [2021-07-13 19:50:33,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6160 states to 6160 states and 21532 transitions. [2021-07-13 19:50:33,873 INFO L78 Accepts]: Start accepts. Automaton has 6160 states and 21532 transitions. Word has length 47 [2021-07-13 19:50:33,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:50:33,873 INFO L482 AbstractCegarLoop]: Abstraction has 6160 states and 21532 transitions. [2021-07-13 19:50:33,873 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) [2021-07-13 19:50:33,873 INFO L276 IsEmpty]: Start isEmpty. Operand 6160 states and 21532 transitions. [2021-07-13 19:50:33,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:50:33,883 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:50:33,883 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] [2021-07-13 19:50:33,884 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2021-07-13 19:50:33,884 INFO L430 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:50:33,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:50:33,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1945405816, now seen corresponding path program 132 times [2021-07-13 19:50:33,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:50:33,884 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196027786] [2021-07-13 19:50:33,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:50:33,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:50:34,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:50:34,103 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:50:34,103 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196027786] [2021-07-13 19:50:34,103 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196027786] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:50:34,103 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:50:34,103 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:50:34,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188388794] [2021-07-13 19:50:34,103 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:50:34,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:50:34,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:50:34,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:50:34,103 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) [2021-07-13 19:50:35,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:50:35,189 INFO L93 Difference]: Finished difference Result 6992 states and 24183 transitions. [2021-07-13 19:50:35,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-07-13 19:50:35,190 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 [2021-07-13 19:50:35,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:50:35,205 INFO L225 Difference]: With dead ends: 6992 [2021-07-13 19:50:35,205 INFO L226 Difference]: Without dead ends: 6893 [2021-07-13 19:50:35,206 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 699.3ms TimeCoverageRelationStatistics Valid=174, Invalid=1718, Unknown=0, NotChecked=0, Total=1892 [2021-07-13 19:50:35,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6893 states. [2021-07-13 19:50:35,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6893 to 6152. [2021-07-13 19:50:35,303 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) [2021-07-13 19:50:35,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6152 states to 6152 states and 21512 transitions. [2021-07-13 19:50:35,318 INFO L78 Accepts]: Start accepts. Automaton has 6152 states and 21512 transitions. Word has length 47 [2021-07-13 19:50:35,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:50:35,318 INFO L482 AbstractCegarLoop]: Abstraction has 6152 states and 21512 transitions. [2021-07-13 19:50:35,318 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) [2021-07-13 19:50:35,318 INFO L276 IsEmpty]: Start isEmpty. Operand 6152 states and 21512 transitions. [2021-07-13 19:50:35,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:50:35,329 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:50:35,329 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] [2021-07-13 19:50:35,329 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2021-07-13 19:50:35,329 INFO L430 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:50:35,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:50:35,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1273816916, now seen corresponding path program 133 times [2021-07-13 19:50:35,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:50:35,329 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234273564] [2021-07-13 19:50:35,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:50:35,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:50:35,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:50:35,561 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:50:35,561 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234273564] [2021-07-13 19:50:35,561 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234273564] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:50:35,561 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:50:35,561 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:50:35,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749031158] [2021-07-13 19:50:35,562 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:50:35,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:50:35,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:50:35,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:50:35,562 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) [2021-07-13 19:50:36,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:50:36,635 INFO L93 Difference]: Finished difference Result 6747 states and 23504 transitions. [2021-07-13 19:50:36,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-07-13 19:50:36,635 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 [2021-07-13 19:50:36,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:50:36,650 INFO L225 Difference]: With dead ends: 6747 [2021-07-13 19:50:36,650 INFO L226 Difference]: Without dead ends: 6602 [2021-07-13 19:50:36,650 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 743.6ms TimeCoverageRelationStatistics Valid=186, Invalid=1794, Unknown=0, NotChecked=0, Total=1980 [2021-07-13 19:50:36,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6602 states. [2021-07-13 19:50:36,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6602 to 6164. [2021-07-13 19:50:36,737 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) [2021-07-13 19:50:36,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6164 states to 6164 states and 21542 transitions. [2021-07-13 19:50:36,750 INFO L78 Accepts]: Start accepts. Automaton has 6164 states and 21542 transitions. Word has length 47 [2021-07-13 19:50:36,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:50:36,750 INFO L482 AbstractCegarLoop]: Abstraction has 6164 states and 21542 transitions. [2021-07-13 19:50:36,751 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) [2021-07-13 19:50:36,751 INFO L276 IsEmpty]: Start isEmpty. Operand 6164 states and 21542 transitions. [2021-07-13 19:50:36,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:50:36,760 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:50:36,760 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] [2021-07-13 19:50:36,760 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2021-07-13 19:50:36,760 INFO L430 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:50:36,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:50:36,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1077697674, now seen corresponding path program 134 times [2021-07-13 19:50:36,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:50:36,761 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914281648] [2021-07-13 19:50:36,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:50:36,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:50:36,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:50:36,995 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:50:36,995 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914281648] [2021-07-13 19:50:36,995 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914281648] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:50:36,995 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:50:36,995 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:50:36,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714606407] [2021-07-13 19:50:36,996 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:50:36,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:50:36,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:50:36,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:50:36,996 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) [2021-07-13 19:50:38,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:50:38,035 INFO L93 Difference]: Finished difference Result 6867 states and 23807 transitions. [2021-07-13 19:50:38,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-07-13 19:50:38,035 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 [2021-07-13 19:50:38,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:50:38,051 INFO L225 Difference]: With dead ends: 6867 [2021-07-13 19:50:38,051 INFO L226 Difference]: Without dead ends: 6770 [2021-07-13 19:50:38,051 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 674.5ms TimeCoverageRelationStatistics Valid=168, Invalid=1638, Unknown=0, NotChecked=0, Total=1806 [2021-07-13 19:50:38,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6770 states. [2021-07-13 19:50:38,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6770 to 6170. [2021-07-13 19:50:38,151 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) [2021-07-13 19:50:38,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6170 states to 6170 states and 21557 transitions. [2021-07-13 19:50:38,210 INFO L78 Accepts]: Start accepts. Automaton has 6170 states and 21557 transitions. Word has length 47 [2021-07-13 19:50:38,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:50:38,210 INFO L482 AbstractCegarLoop]: Abstraction has 6170 states and 21557 transitions. [2021-07-13 19:50:38,210 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) [2021-07-13 19:50:38,211 INFO L276 IsEmpty]: Start isEmpty. Operand 6170 states and 21557 transitions. [2021-07-13 19:50:38,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:50:38,221 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:50:38,221 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] [2021-07-13 19:50:38,221 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2021-07-13 19:50:38,221 INFO L430 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:50:38,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:50:38,221 INFO L82 PathProgramCache]: Analyzing trace with hash -647722836, now seen corresponding path program 135 times [2021-07-13 19:50:38,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:50:38,221 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392496816] [2021-07-13 19:50:38,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:50:38,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:50:38,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:50:38,438 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:50:38,438 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392496816] [2021-07-13 19:50:38,438 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392496816] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:50:38,438 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:50:38,438 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:50:38,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654356214] [2021-07-13 19:50:38,438 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:50:38,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:50:38,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:50:38,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:50:38,439 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) [2021-07-13 19:50:39,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:50:39,411 INFO L93 Difference]: Finished difference Result 6768 states and 23502 transitions. [2021-07-13 19:50:39,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-07-13 19:50:39,411 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 [2021-07-13 19:50:39,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:50:39,425 INFO L225 Difference]: With dead ends: 6768 [2021-07-13 19:50:39,425 INFO L226 Difference]: Without dead ends: 6639 [2021-07-13 19:50:39,425 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 636.6ms TimeCoverageRelationStatistics Valid=159, Invalid=1563, Unknown=0, NotChecked=0, Total=1722 [2021-07-13 19:50:39,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6639 states. [2021-07-13 19:50:39,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6639 to 6132. [2021-07-13 19:50:39,509 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) [2021-07-13 19:50:39,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6132 states to 6132 states and 21468 transitions. [2021-07-13 19:50:39,522 INFO L78 Accepts]: Start accepts. Automaton has 6132 states and 21468 transitions. Word has length 47 [2021-07-13 19:50:39,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:50:39,522 INFO L482 AbstractCegarLoop]: Abstraction has 6132 states and 21468 transitions. [2021-07-13 19:50:39,523 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) [2021-07-13 19:50:39,523 INFO L276 IsEmpty]: Start isEmpty. Operand 6132 states and 21468 transitions. [2021-07-13 19:50:39,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:50:39,531 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:50:39,531 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] [2021-07-13 19:50:39,532 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2021-07-13 19:50:39,532 INFO L430 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:50:39,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:50:39,532 INFO L82 PathProgramCache]: Analyzing trace with hash -669605316, now seen corresponding path program 136 times [2021-07-13 19:50:39,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:50:39,532 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826210657] [2021-07-13 19:50:39,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:50:39,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:50:39,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:50:39,731 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:50:39,731 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826210657] [2021-07-13 19:50:39,731 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826210657] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:50:39,731 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:50:39,731 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 19:50:39,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733927312] [2021-07-13 19:50:39,731 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 19:50:39,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:50:39,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 19:50:39,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-07-13 19:50:39,732 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) [2021-07-13 19:50:40,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:50:40,618 INFO L93 Difference]: Finished difference Result 6669 states and 23217 transitions. [2021-07-13 19:50:40,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-13 19:50:40,619 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 [2021-07-13 19:50:40,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:50:40,633 INFO L225 Difference]: With dead ends: 6669 [2021-07-13 19:50:40,633 INFO L226 Difference]: Without dead ends: 6532 [2021-07-13 19:50:40,633 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 565.5ms TimeCoverageRelationStatistics Valid=143, Invalid=1263, Unknown=0, NotChecked=0, Total=1406 [2021-07-13 19:50:40,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6532 states. [2021-07-13 19:50:40,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6532 to 6148. [2021-07-13 19:50:40,722 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) [2021-07-13 19:50:40,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6148 states to 6148 states and 21516 transitions. [2021-07-13 19:50:40,735 INFO L78 Accepts]: Start accepts. Automaton has 6148 states and 21516 transitions. Word has length 47 [2021-07-13 19:50:40,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:50:40,735 INFO L482 AbstractCegarLoop]: Abstraction has 6148 states and 21516 transitions. [2021-07-13 19:50:40,735 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) [2021-07-13 19:50:40,735 INFO L276 IsEmpty]: Start isEmpty. Operand 6148 states and 21516 transitions. [2021-07-13 19:50:40,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:50:40,745 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:50:40,745 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] [2021-07-13 19:50:40,745 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2021-07-13 19:50:40,745 INFO L430 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:50:40,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:50:40,746 INFO L82 PathProgramCache]: Analyzing trace with hash 848090906, now seen corresponding path program 137 times [2021-07-13 19:50:40,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:50:40,746 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580847723] [2021-07-13 19:50:40,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:50:40,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:50:40,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:50:40,944 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:50:40,944 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580847723] [2021-07-13 19:50:40,944 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580847723] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:50:40,944 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:50:40,944 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:50:40,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874582958] [2021-07-13 19:50:40,944 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:50:40,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:50:40,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:50:40,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:50:40,944 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) [2021-07-13 19:50:41,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:50:41,882 INFO L93 Difference]: Finished difference Result 6728 states and 23376 transitions. [2021-07-13 19:50:41,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-07-13 19:50:41,882 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 [2021-07-13 19:50:41,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:50:41,932 INFO L225 Difference]: With dead ends: 6728 [2021-07-13 19:50:41,932 INFO L226 Difference]: Without dead ends: 6639 [2021-07-13 19:50:41,932 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 619.3ms TimeCoverageRelationStatistics Valid=159, Invalid=1481, Unknown=0, NotChecked=0, Total=1640 [2021-07-13 19:50:41,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6639 states. [2021-07-13 19:50:42,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6639 to 6212. [2021-07-13 19:50:42,024 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) [2021-07-13 19:50:42,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6212 states to 6212 states and 21732 transitions. [2021-07-13 19:50:42,037 INFO L78 Accepts]: Start accepts. Automaton has 6212 states and 21732 transitions. Word has length 47 [2021-07-13 19:50:42,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:50:42,037 INFO L482 AbstractCegarLoop]: Abstraction has 6212 states and 21732 transitions. [2021-07-13 19:50:42,037 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) [2021-07-13 19:50:42,038 INFO L276 IsEmpty]: Start isEmpty. Operand 6212 states and 21732 transitions. [2021-07-13 19:50:42,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:50:42,047 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:50:42,047 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] [2021-07-13 19:50:42,047 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2021-07-13 19:50:42,047 INFO L430 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:50:42,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:50:42,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1282120252, now seen corresponding path program 138 times [2021-07-13 19:50:42,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:50:42,048 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831489757] [2021-07-13 19:50:42,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:50:42,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:50:42,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:50:42,244 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:50:42,244 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831489757] [2021-07-13 19:50:42,244 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831489757] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:50:42,244 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:50:42,244 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:50:42,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253232208] [2021-07-13 19:50:42,245 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:50:42,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:50:42,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:50:42,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:50:42,245 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) [2021-07-13 19:50:43,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:50:43,181 INFO L93 Difference]: Finished difference Result 6637 states and 23105 transitions. [2021-07-13 19:50:43,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-07-13 19:50:43,181 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 [2021-07-13 19:50:43,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:50:43,194 INFO L225 Difference]: With dead ends: 6637 [2021-07-13 19:50:43,195 INFO L226 Difference]: Without dead ends: 6508 [2021-07-13 19:50:43,195 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 584.4ms TimeCoverageRelationStatistics Valid=151, Invalid=1409, Unknown=0, NotChecked=0, Total=1560 [2021-07-13 19:50:43,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6508 states. [2021-07-13 19:50:43,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6508 to 6212. [2021-07-13 19:50:43,288 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) [2021-07-13 19:50:43,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6212 states to 6212 states and 21708 transitions. [2021-07-13 19:50:43,303 INFO L78 Accepts]: Start accepts. Automaton has 6212 states and 21708 transitions. Word has length 47 [2021-07-13 19:50:43,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:50:43,303 INFO L482 AbstractCegarLoop]: Abstraction has 6212 states and 21708 transitions. [2021-07-13 19:50:43,303 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) [2021-07-13 19:50:43,303 INFO L276 IsEmpty]: Start isEmpty. Operand 6212 states and 21708 transitions. [2021-07-13 19:50:43,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:50:43,314 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:50:43,314 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] [2021-07-13 19:50:43,314 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2021-07-13 19:50:43,314 INFO L430 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:50:43,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:50:43,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1451413558, now seen corresponding path program 139 times [2021-07-13 19:50:43,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:50:43,314 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324693282] [2021-07-13 19:50:43,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:50:43,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:50:43,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:50:43,515 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:50:43,515 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324693282] [2021-07-13 19:50:43,515 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324693282] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:50:43,515 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:50:43,515 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:50:43,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129403623] [2021-07-13 19:50:43,515 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:50:43,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:50:43,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:50:43,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:50:43,516 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) [2021-07-13 19:50:44,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:50:44,464 INFO L93 Difference]: Finished difference Result 6680 states and 23216 transitions. [2021-07-13 19:50:44,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-07-13 19:50:44,464 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 [2021-07-13 19:50:44,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:50:44,479 INFO L225 Difference]: With dead ends: 6680 [2021-07-13 19:50:44,479 INFO L226 Difference]: Without dead ends: 6591 [2021-07-13 19:50:44,480 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 622.2ms TimeCoverageRelationStatistics Valid=160, Invalid=1480, Unknown=0, NotChecked=0, Total=1640 [2021-07-13 19:50:44,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6591 states. [2021-07-13 19:50:44,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6591 to 6212. [2021-07-13 19:50:44,574 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) [2021-07-13 19:50:44,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6212 states to 6212 states and 21708 transitions. [2021-07-13 19:50:44,587 INFO L78 Accepts]: Start accepts. Automaton has 6212 states and 21708 transitions. Word has length 47 [2021-07-13 19:50:44,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:50:44,587 INFO L482 AbstractCegarLoop]: Abstraction has 6212 states and 21708 transitions. [2021-07-13 19:50:44,587 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) [2021-07-13 19:50:44,587 INFO L276 IsEmpty]: Start isEmpty. Operand 6212 states and 21708 transitions. [2021-07-13 19:50:44,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:50:44,597 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:50:44,597 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] [2021-07-13 19:50:44,597 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2021-07-13 19:50:44,597 INFO L430 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:50:44,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:50:44,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1017384212, now seen corresponding path program 140 times [2021-07-13 19:50:44,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:50:44,597 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698913331] [2021-07-13 19:50:44,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:50:44,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:50:44,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:50:44,795 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:50:44,795 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698913331] [2021-07-13 19:50:44,795 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698913331] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:50:44,795 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:50:44,795 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:50:44,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447504818] [2021-07-13 19:50:44,795 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:50:44,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:50:44,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:50:44,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:50:44,796 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) [2021-07-13 19:50:45,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:50:45,725 INFO L93 Difference]: Finished difference Result 6688 states and 23244 transitions. [2021-07-13 19:50:45,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-07-13 19:50:45,725 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 [2021-07-13 19:50:45,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:50:45,740 INFO L225 Difference]: With dead ends: 6688 [2021-07-13 19:50:45,741 INFO L226 Difference]: Without dead ends: 6583 [2021-07-13 19:50:45,741 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 637.9ms TimeCoverageRelationStatistics Valid=155, Invalid=1405, Unknown=0, NotChecked=0, Total=1560 [2021-07-13 19:50:45,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6583 states. [2021-07-13 19:50:45,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6583 to 6228. [2021-07-13 19:50:45,833 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) [2021-07-13 19:50:45,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6228 states to 6228 states and 21756 transitions. [2021-07-13 19:50:45,846 INFO L78 Accepts]: Start accepts. Automaton has 6228 states and 21756 transitions. Word has length 47 [2021-07-13 19:50:45,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:50:45,846 INFO L482 AbstractCegarLoop]: Abstraction has 6228 states and 21756 transitions. [2021-07-13 19:50:45,846 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) [2021-07-13 19:50:45,846 INFO L276 IsEmpty]: Start isEmpty. Operand 6228 states and 21756 transitions. [2021-07-13 19:50:45,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:50:45,855 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:50:45,855 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] [2021-07-13 19:50:45,855 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2021-07-13 19:50:45,855 INFO L430 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:50:45,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:50:45,856 INFO L82 PathProgramCache]: Analyzing trace with hash 255549496, now seen corresponding path program 141 times [2021-07-13 19:50:45,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:50:45,856 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996732528] [2021-07-13 19:50:45,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:50:45,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:50:46,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:50:46,054 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:50:46,054 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996732528] [2021-07-13 19:50:46,054 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996732528] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:50:46,054 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:50:46,054 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:50:46,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078195954] [2021-07-13 19:50:46,054 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:50:46,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:50:46,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:50:46,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:50:46,055 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) [2021-07-13 19:50:46,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:50:46,930 INFO L93 Difference]: Finished difference Result 6581 states and 22917 transitions. [2021-07-13 19:50:46,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 19:50:46,930 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 [2021-07-13 19:50:46,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:50:46,944 INFO L225 Difference]: With dead ends: 6581 [2021-07-13 19:50:46,944 INFO L226 Difference]: Without dead ends: 6312 [2021-07-13 19:50:46,944 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 587.2ms TimeCoverageRelationStatistics Valid=143, Invalid=1263, Unknown=0, NotChecked=0, Total=1406 [2021-07-13 19:50:46,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6312 states. [2021-07-13 19:50:47,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6312 to 6104. [2021-07-13 19:50:47,034 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) [2021-07-13 19:50:47,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6104 states to 6104 states and 21388 transitions. [2021-07-13 19:50:47,049 INFO L78 Accepts]: Start accepts. Automaton has 6104 states and 21388 transitions. Word has length 47 [2021-07-13 19:50:47,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:50:47,049 INFO L482 AbstractCegarLoop]: Abstraction has 6104 states and 21388 transitions. [2021-07-13 19:50:47,049 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:50:47,049 INFO L276 IsEmpty]: Start isEmpty. Operand 6104 states and 21388 transitions. [2021-07-13 19:50:47,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:50:47,059 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:50:47,059 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] [2021-07-13 19:50:47,059 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2021-07-13 19:50:47,059 INFO L430 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:50:47,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:50:47,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1913602850, now seen corresponding path program 142 times [2021-07-13 19:50:47,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:50:47,059 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820454970] [2021-07-13 19:50:47,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:50:47,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:50:47,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:50:47,301 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:50:47,301 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820454970] [2021-07-13 19:50:47,301 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820454970] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:50:47,301 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:50:47,301 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:50:47,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713408299] [2021-07-13 19:50:47,302 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:50:47,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:50:47,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:50:47,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:50:47,302 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) [2021-07-13 19:50:50,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:50:50,385 INFO L93 Difference]: Finished difference Result 10135 states and 35578 transitions. [2021-07-13 19:50:50,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-07-13 19:50:50,385 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 [2021-07-13 19:50:50,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:50:50,408 INFO L225 Difference]: With dead ends: 10135 [2021-07-13 19:50:50,408 INFO L226 Difference]: Without dead ends: 9908 [2021-07-13 19:50:50,408 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1678 ImplicationChecksByTransitivity, 1791.6ms TimeCoverageRelationStatistics Valid=518, Invalid=5334, Unknown=0, NotChecked=0, Total=5852 [2021-07-13 19:50:50,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9908 states. [2021-07-13 19:50:50,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9908 to 6307. [2021-07-13 19:50:50,538 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) [2021-07-13 19:50:50,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6307 states to 6307 states and 22097 transitions. [2021-07-13 19:50:50,552 INFO L78 Accepts]: Start accepts. Automaton has 6307 states and 22097 transitions. Word has length 47 [2021-07-13 19:50:50,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:50:50,552 INFO L482 AbstractCegarLoop]: Abstraction has 6307 states and 22097 transitions. [2021-07-13 19:50:50,553 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) [2021-07-13 19:50:50,553 INFO L276 IsEmpty]: Start isEmpty. Operand 6307 states and 22097 transitions. [2021-07-13 19:50:50,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:50:50,563 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:50:50,563 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] [2021-07-13 19:50:50,563 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2021-07-13 19:50:50,563 INFO L430 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:50:50,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:50:50,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1030615842, now seen corresponding path program 143 times [2021-07-13 19:50:50,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:50:50,564 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128842421] [2021-07-13 19:50:50,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:50:50,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:50:50,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:50:50,763 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:50:50,763 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128842421] [2021-07-13 19:50:50,763 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128842421] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:50:50,763 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:50:50,763 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:50:50,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286887636] [2021-07-13 19:50:50,763 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:50:50,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:50:50,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:50:50,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:50:50,764 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) [2021-07-13 19:50:56,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:50:56,208 INFO L93 Difference]: Finished difference Result 12884 states and 45400 transitions. [2021-07-13 19:50:56,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2021-07-13 19:50:56,209 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 [2021-07-13 19:50:56,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:50:56,238 INFO L225 Difference]: With dead ends: 12884 [2021-07-13 19:50:56,238 INFO L226 Difference]: Without dead ends: 12525 [2021-07-13 19:50:56,239 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5304 ImplicationChecksByTransitivity, 3421.8ms TimeCoverageRelationStatistics Valid=1263, Invalid=13743, Unknown=0, NotChecked=0, Total=15006 [2021-07-13 19:50:56,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12525 states. [2021-07-13 19:50:56,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12525 to 7156. [2021-07-13 19:50:56,375 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) [2021-07-13 19:50:56,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7156 states to 7156 states and 25237 transitions. [2021-07-13 19:50:56,391 INFO L78 Accepts]: Start accepts. Automaton has 7156 states and 25237 transitions. Word has length 47 [2021-07-13 19:50:56,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:50:56,391 INFO L482 AbstractCegarLoop]: Abstraction has 7156 states and 25237 transitions. [2021-07-13 19:50:56,391 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) [2021-07-13 19:50:56,392 INFO L276 IsEmpty]: Start isEmpty. Operand 7156 states and 25237 transitions. [2021-07-13 19:50:56,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:50:56,403 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:50:56,403 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] [2021-07-13 19:50:56,403 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2021-07-13 19:50:56,403 INFO L430 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:50:56,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:50:56,403 INFO L82 PathProgramCache]: Analyzing trace with hash 179963934, now seen corresponding path program 144 times [2021-07-13 19:50:56,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:50:56,403 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952359302] [2021-07-13 19:50:56,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:50:56,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:50:56,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:50:56,624 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:50:56,625 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952359302] [2021-07-13 19:50:56,625 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952359302] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:50:56,625 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:50:56,625 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:50:56,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076113337] [2021-07-13 19:50:56,625 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:50:56,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:50:56,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:50:56,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:50:56,625 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) [2021-07-13 19:51:00,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:51:00,991 INFO L93 Difference]: Finished difference Result 12739 states and 45281 transitions. [2021-07-13 19:51:00,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2021-07-13 19:51:00,992 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-13 19:51:00,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:51:01,018 INFO L225 Difference]: With dead ends: 12739 [2021-07-13 19:51:01,019 INFO L226 Difference]: Without dead ends: 12536 [2021-07-13 19:51:01,019 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4008 ImplicationChecksByTransitivity, 2649.9ms TimeCoverageRelationStatistics Valid=943, Invalid=10829, Unknown=0, NotChecked=0, Total=11772 [2021-07-13 19:51:01,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12536 states. [2021-07-13 19:51:01,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12536 to 7188. [2021-07-13 19:51:01,160 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) [2021-07-13 19:51:01,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7188 states to 7188 states and 25371 transitions. [2021-07-13 19:51:01,178 INFO L78 Accepts]: Start accepts. Automaton has 7188 states and 25371 transitions. Word has length 47 [2021-07-13 19:51:01,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:51:01,178 INFO L482 AbstractCegarLoop]: Abstraction has 7188 states and 25371 transitions. [2021-07-13 19:51:01,178 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) [2021-07-13 19:51:01,178 INFO L276 IsEmpty]: Start isEmpty. Operand 7188 states and 25371 transitions. [2021-07-13 19:51:01,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:51:01,190 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:51:01,190 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] [2021-07-13 19:51:01,190 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2021-07-13 19:51:01,190 INFO L430 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:51:01,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:51:01,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1939195810, now seen corresponding path program 145 times [2021-07-13 19:51:01,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:51:01,191 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675986429] [2021-07-13 19:51:01,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:51:01,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:51:01,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:51:01,377 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:51:01,377 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675986429] [2021-07-13 19:51:01,377 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675986429] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:51:01,377 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:51:01,377 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 19:51:01,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371043598] [2021-07-13 19:51:01,377 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 19:51:01,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:51:01,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 19:51:01,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-07-13 19:51:01,378 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) [2021-07-13 19:51:05,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:51:05,613 INFO L93 Difference]: Finished difference Result 11886 states and 41418 transitions. [2021-07-13 19:51:05,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-07-13 19:51:05,613 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 [2021-07-13 19:51:05,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:51:05,637 INFO L225 Difference]: With dead ends: 11886 [2021-07-13 19:51:05,637 INFO L226 Difference]: Without dead ends: 11431 [2021-07-13 19:51:05,638 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3550 ImplicationChecksByTransitivity, 2540.4ms TimeCoverageRelationStatistics Valid=883, Invalid=9623, Unknown=0, NotChecked=0, Total=10506 [2021-07-13 19:51:05,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11431 states. [2021-07-13 19:51:05,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11431 to 7463. [2021-07-13 19:51:05,773 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) [2021-07-13 19:51:05,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7463 states to 7463 states and 26327 transitions. [2021-07-13 19:51:05,791 INFO L78 Accepts]: Start accepts. Automaton has 7463 states and 26327 transitions. Word has length 47 [2021-07-13 19:51:05,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:51:05,791 INFO L482 AbstractCegarLoop]: Abstraction has 7463 states and 26327 transitions. [2021-07-13 19:51:05,791 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) [2021-07-13 19:51:05,791 INFO L276 IsEmpty]: Start isEmpty. Operand 7463 states and 26327 transitions. [2021-07-13 19:51:05,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:51:05,803 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:51:05,803 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] [2021-07-13 19:51:05,804 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2021-07-13 19:51:05,804 INFO L430 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:51:05,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:51:05,804 INFO L82 PathProgramCache]: Analyzing trace with hash 376897024, now seen corresponding path program 146 times [2021-07-13 19:51:05,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:51:05,804 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868302598] [2021-07-13 19:51:05,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:51:05,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:51:06,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:51:06,001 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:51:06,001 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868302598] [2021-07-13 19:51:06,001 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868302598] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:51:06,001 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:51:06,001 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:51:06,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119481307] [2021-07-13 19:51:06,001 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:51:06,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:51:06,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:51:06,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:51:06,002 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) [2021-07-13 19:51:11,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:51:11,531 INFO L93 Difference]: Finished difference Result 13404 states and 47111 transitions. [2021-07-13 19:51:11,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2021-07-13 19:51:11,531 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 [2021-07-13 19:51:11,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:51:11,559 INFO L225 Difference]: With dead ends: 13404 [2021-07-13 19:51:11,559 INFO L226 Difference]: Without dead ends: 13078 [2021-07-13 19:51:11,560 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5184 ImplicationChecksByTransitivity, 3315.9ms TimeCoverageRelationStatistics Valid=1198, Invalid=13564, Unknown=0, NotChecked=0, Total=14762 [2021-07-13 19:51:11,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13078 states. [2021-07-13 19:51:11,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13078 to 7625. [2021-07-13 19:51:11,712 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) [2021-07-13 19:51:11,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7625 states to 7625 states and 26961 transitions. [2021-07-13 19:51:11,729 INFO L78 Accepts]: Start accepts. Automaton has 7625 states and 26961 transitions. Word has length 47 [2021-07-13 19:51:11,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:51:11,730 INFO L482 AbstractCegarLoop]: Abstraction has 7625 states and 26961 transitions. [2021-07-13 19:51:11,730 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) [2021-07-13 19:51:11,730 INFO L276 IsEmpty]: Start isEmpty. Operand 7625 states and 26961 transitions. [2021-07-13 19:51:11,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:51:11,742 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:51:11,742 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] [2021-07-13 19:51:11,742 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2021-07-13 19:51:11,742 INFO L430 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:51:11,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:51:11,743 INFO L82 PathProgramCache]: Analyzing trace with hash -473754884, now seen corresponding path program 147 times [2021-07-13 19:51:11,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:51:11,743 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286812821] [2021-07-13 19:51:11,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:51:11,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:51:11,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:51:11,941 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:51:11,941 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286812821] [2021-07-13 19:51:11,941 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286812821] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:51:11,941 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:51:11,941 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:51:11,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094364648] [2021-07-13 19:51:11,941 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:51:11,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:51:11,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:51:11,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:51:11,942 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) [2021-07-13 19:51:17,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:51:17,460 INFO L93 Difference]: Finished difference Result 13323 states and 47094 transitions. [2021-07-13 19:51:17,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2021-07-13 19:51:17,460 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 [2021-07-13 19:51:17,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:51:17,492 INFO L225 Difference]: With dead ends: 13323 [2021-07-13 19:51:17,493 INFO L226 Difference]: Without dead ends: 13076 [2021-07-13 19:51:17,493 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4525 ImplicationChecksByTransitivity, 3295.6ms TimeCoverageRelationStatistics Valid=1082, Invalid=12028, Unknown=0, NotChecked=0, Total=13110 [2021-07-13 19:51:17,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13076 states. [2021-07-13 19:51:17,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13076 to 7557. [2021-07-13 19:51:17,649 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) [2021-07-13 19:51:17,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7557 states to 7557 states and 26770 transitions. [2021-07-13 19:51:17,668 INFO L78 Accepts]: Start accepts. Automaton has 7557 states and 26770 transitions. Word has length 47 [2021-07-13 19:51:17,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:51:17,669 INFO L482 AbstractCegarLoop]: Abstraction has 7557 states and 26770 transitions. [2021-07-13 19:51:17,669 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) [2021-07-13 19:51:17,669 INFO L276 IsEmpty]: Start isEmpty. Operand 7557 states and 26770 transitions. [2021-07-13 19:51:17,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:51:17,681 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:51:17,681 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] [2021-07-13 19:51:17,682 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2021-07-13 19:51:17,682 INFO L430 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:51:17,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:51:17,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1813193950, now seen corresponding path program 148 times [2021-07-13 19:51:17,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:51:17,682 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066463672] [2021-07-13 19:51:17,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:51:17,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:51:17,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:51:17,934 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:51:17,934 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066463672] [2021-07-13 19:51:17,934 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066463672] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:51:17,934 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:51:17,934 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:51:17,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826231835] [2021-07-13 19:51:17,934 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:51:17,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:51:17,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:51:17,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:51:17,935 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) [2021-07-13 19:51:21,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:51:21,722 INFO L93 Difference]: Finished difference Result 12055 states and 42495 transitions. [2021-07-13 19:51:21,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-07-13 19:51:21,722 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 [2021-07-13 19:51:21,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:51:21,749 INFO L225 Difference]: With dead ends: 12055 [2021-07-13 19:51:21,749 INFO L226 Difference]: Without dead ends: 11928 [2021-07-13 19:51:21,750 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2179 ImplicationChecksByTransitivity, 2154.0ms TimeCoverageRelationStatistics Valid=605, Invalid=6705, Unknown=0, NotChecked=0, Total=7310 [2021-07-13 19:51:21,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11928 states. [2021-07-13 19:51:21,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11928 to 7585. [2021-07-13 19:51:21,929 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) [2021-07-13 19:51:21,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7585 states to 7585 states and 26846 transitions. [2021-07-13 19:51:21,947 INFO L78 Accepts]: Start accepts. Automaton has 7585 states and 26846 transitions. Word has length 47 [2021-07-13 19:51:21,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:51:21,948 INFO L482 AbstractCegarLoop]: Abstraction has 7585 states and 26846 transitions. [2021-07-13 19:51:21,948 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) [2021-07-13 19:51:21,948 INFO L276 IsEmpty]: Start isEmpty. Operand 7585 states and 26846 transitions. [2021-07-13 19:51:21,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:51:21,961 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:51:21,961 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] [2021-07-13 19:51:21,961 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2021-07-13 19:51:21,961 INFO L430 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:51:21,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:51:21,961 INFO L82 PathProgramCache]: Analyzing trace with hash 462445346, now seen corresponding path program 149 times [2021-07-13 19:51:21,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:51:21,961 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568476149] [2021-07-13 19:51:21,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:51:21,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:51:22,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:51:22,202 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:51:22,202 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568476149] [2021-07-13 19:51:22,202 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568476149] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:51:22,202 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:51:22,202 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:51:22,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837267321] [2021-07-13 19:51:22,202 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:51:22,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:51:22,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:51:22,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:51:22,202 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) [2021-07-13 19:51:27,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:51:27,739 INFO L93 Difference]: Finished difference Result 14119 states and 49890 transitions. [2021-07-13 19:51:27,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2021-07-13 19:51:27,740 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 [2021-07-13 19:51:27,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:51:27,774 INFO L225 Difference]: With dead ends: 14119 [2021-07-13 19:51:27,774 INFO L226 Difference]: Without dead ends: 14030 [2021-07-13 19:51:27,775 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5739 ImplicationChecksByTransitivity, 3452.4ms TimeCoverageRelationStatistics Valid=1316, Invalid=14940, Unknown=0, NotChecked=0, Total=16256 [2021-07-13 19:51:27,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14030 states. [2021-07-13 19:51:27,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14030 to 7583. [2021-07-13 19:51:27,968 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) [2021-07-13 19:51:27,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7583 states to 7583 states and 26852 transitions. [2021-07-13 19:51:27,989 INFO L78 Accepts]: Start accepts. Automaton has 7583 states and 26852 transitions. Word has length 47 [2021-07-13 19:51:27,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:51:27,989 INFO L482 AbstractCegarLoop]: Abstraction has 7583 states and 26852 transitions. [2021-07-13 19:51:27,990 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) [2021-07-13 19:51:27,990 INFO L276 IsEmpty]: Start isEmpty. Operand 7583 states and 26852 transitions. [2021-07-13 19:51:28,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:51:28,003 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:51:28,003 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] [2021-07-13 19:51:28,003 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2021-07-13 19:51:28,003 INFO L430 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:51:28,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:51:28,004 INFO L82 PathProgramCache]: Analyzing trace with hash -388206562, now seen corresponding path program 150 times [2021-07-13 19:51:28,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:51:28,004 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630695028] [2021-07-13 19:51:28,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:51:28,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:51:28,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:51:28,221 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:51:28,221 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630695028] [2021-07-13 19:51:28,221 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630695028] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:51:28,221 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:51:28,221 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:51:28,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6921784] [2021-07-13 19:51:28,221 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:51:28,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:51:28,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:51:28,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:51:28,222 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) [2021-07-13 19:51:33,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:51:33,105 INFO L93 Difference]: Finished difference Result 13896 states and 49472 transitions. [2021-07-13 19:51:33,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2021-07-13 19:51:33,106 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 [2021-07-13 19:51:33,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:51:33,141 INFO L225 Difference]: With dead ends: 13896 [2021-07-13 19:51:33,141 INFO L226 Difference]: Without dead ends: 13793 [2021-07-13 19:51:33,142 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4760 ImplicationChecksByTransitivity, 2899.6ms TimeCoverageRelationStatistics Valid=1039, Invalid=12767, Unknown=0, NotChecked=0, Total=13806 [2021-07-13 19:51:33,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13793 states. [2021-07-13 19:51:33,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13793 to 7563. [2021-07-13 19:51:33,298 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) [2021-07-13 19:51:33,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7563 states to 7563 states and 26796 transitions. [2021-07-13 19:51:33,315 INFO L78 Accepts]: Start accepts. Automaton has 7563 states and 26796 transitions. Word has length 47 [2021-07-13 19:51:33,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:51:33,315 INFO L482 AbstractCegarLoop]: Abstraction has 7563 states and 26796 transitions. [2021-07-13 19:51:33,315 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) [2021-07-13 19:51:33,315 INFO L276 IsEmpty]: Start isEmpty. Operand 7563 states and 26796 transitions. [2021-07-13 19:51:33,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:51:33,327 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:51:33,327 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] [2021-07-13 19:51:33,327 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2021-07-13 19:51:33,327 INFO L430 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:51:33,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:51:33,327 INFO L82 PathProgramCache]: Analyzing trace with hash 200978940, now seen corresponding path program 151 times [2021-07-13 19:51:33,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:51:33,328 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116050791] [2021-07-13 19:51:33,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:51:33,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:51:33,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:51:33,556 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:51:33,556 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116050791] [2021-07-13 19:51:33,556 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116050791] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:51:33,556 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:51:33,556 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:51:33,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280910277] [2021-07-13 19:51:33,557 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:51:33,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:51:33,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:51:33,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:51:33,557 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) [2021-07-13 19:51:36,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:51:36,466 INFO L93 Difference]: Finished difference Result 11395 states and 40165 transitions. [2021-07-13 19:51:36,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-07-13 19:51:36,466 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 [2021-07-13 19:51:36,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:51:36,493 INFO L225 Difference]: With dead ends: 11395 [2021-07-13 19:51:36,493 INFO L226 Difference]: Without dead ends: 11268 [2021-07-13 19:51:36,494 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1535 ImplicationChecksByTransitivity, 1610.6ms TimeCoverageRelationStatistics Valid=468, Invalid=5082, Unknown=0, NotChecked=0, Total=5550 [2021-07-13 19:51:36,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11268 states. [2021-07-13 19:51:36,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11268 to 7585. [2021-07-13 19:51:36,666 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) [2021-07-13 19:51:36,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7585 states to 7585 states and 26850 transitions. [2021-07-13 19:51:36,685 INFO L78 Accepts]: Start accepts. Automaton has 7585 states and 26850 transitions. Word has length 47 [2021-07-13 19:51:36,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:51:36,686 INFO L482 AbstractCegarLoop]: Abstraction has 7585 states and 26850 transitions. [2021-07-13 19:51:36,686 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) [2021-07-13 19:51:36,686 INFO L276 IsEmpty]: Start isEmpty. Operand 7585 states and 26850 transitions. [2021-07-13 19:51:36,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:51:36,698 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:51:36,698 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] [2021-07-13 19:51:36,699 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2021-07-13 19:51:36,699 INFO L430 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:51:36,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:51:36,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1170218466, now seen corresponding path program 152 times [2021-07-13 19:51:36,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:51:36,699 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649422557] [2021-07-13 19:51:36,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:51:36,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:51:36,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:51:36,923 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:51:36,924 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649422557] [2021-07-13 19:51:36,924 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649422557] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:51:36,924 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:51:36,924 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:51:36,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796102315] [2021-07-13 19:51:36,924 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:51:36,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:51:36,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:51:36,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:51:36,924 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) [2021-07-13 19:51:39,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:51:39,449 INFO L93 Difference]: Finished difference Result 11183 states and 39359 transitions. [2021-07-13 19:51:39,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-07-13 19:51:39,449 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 [2021-07-13 19:51:39,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:51:39,473 INFO L225 Difference]: With dead ends: 11183 [2021-07-13 19:51:39,473 INFO L226 Difference]: Without dead ends: 11083 [2021-07-13 19:51:39,473 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1327 ImplicationChecksByTransitivity, 1402.6ms TimeCoverageRelationStatistics Valid=430, Invalid=4400, Unknown=0, NotChecked=0, Total=4830 [2021-07-13 19:51:39,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11083 states. [2021-07-13 19:51:39,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11083 to 7594. [2021-07-13 19:51:39,613 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) [2021-07-13 19:51:39,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7594 states to 7594 states and 26872 transitions. [2021-07-13 19:51:39,632 INFO L78 Accepts]: Start accepts. Automaton has 7594 states and 26872 transitions. Word has length 47 [2021-07-13 19:51:39,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:51:39,632 INFO L482 AbstractCegarLoop]: Abstraction has 7594 states and 26872 transitions. [2021-07-13 19:51:39,632 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:51:39,632 INFO L276 IsEmpty]: Start isEmpty. Operand 7594 states and 26872 transitions. [2021-07-13 19:51:39,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:51:39,646 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:51:39,646 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] [2021-07-13 19:51:39,646 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2021-07-13 19:51:39,646 INFO L430 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:51:39,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:51:39,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1689681340, now seen corresponding path program 153 times [2021-07-13 19:51:39,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:51:39,646 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101803005] [2021-07-13 19:51:39,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:51:39,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:51:39,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:51:39,870 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:51:39,870 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101803005] [2021-07-13 19:51:39,870 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101803005] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:51:39,870 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:51:39,870 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:51:39,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46599151] [2021-07-13 19:51:39,870 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:51:39,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:51:39,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:51:39,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:51:39,871 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) [2021-07-13 19:51:42,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:51:42,933 INFO L93 Difference]: Finished difference Result 12148 states and 42969 transitions. [2021-07-13 19:51:42,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-07-13 19:51:42,934 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 [2021-07-13 19:51:42,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:51:42,961 INFO L225 Difference]: With dead ends: 12148 [2021-07-13 19:51:42,961 INFO L226 Difference]: Without dead ends: 12030 [2021-07-13 19:51:42,962 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1928 ImplicationChecksByTransitivity, 1699.5ms TimeCoverageRelationStatistics Valid=552, Invalid=6090, Unknown=0, NotChecked=0, Total=6642 [2021-07-13 19:51:42,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12030 states. [2021-07-13 19:51:43,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12030 to 7567. [2021-07-13 19:51:43,112 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) [2021-07-13 19:51:43,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7567 states to 7567 states and 26802 transitions. [2021-07-13 19:51:43,188 INFO L78 Accepts]: Start accepts. Automaton has 7567 states and 26802 transitions. Word has length 47 [2021-07-13 19:51:43,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:51:43,188 INFO L482 AbstractCegarLoop]: Abstraction has 7567 states and 26802 transitions. [2021-07-13 19:51:43,188 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) [2021-07-13 19:51:43,188 INFO L276 IsEmpty]: Start isEmpty. Operand 7567 states and 26802 transitions. [2021-07-13 19:51:43,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:51:43,200 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:51:43,200 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] [2021-07-13 19:51:43,200 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2021-07-13 19:51:43,201 INFO L430 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:51:43,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:51:43,201 INFO L82 PathProgramCache]: Analyzing trace with hash -2047419614, now seen corresponding path program 154 times [2021-07-13 19:51:43,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:51:43,201 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39372555] [2021-07-13 19:51:43,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:51:43,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:51:43,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:51:43,421 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:51:43,421 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39372555] [2021-07-13 19:51:43,421 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39372555] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:51:43,421 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:51:43,421 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:51:43,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994533056] [2021-07-13 19:51:43,421 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:51:43,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:51:43,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:51:43,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:51:43,422 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) [2021-07-13 19:51:46,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:51:46,884 INFO L93 Difference]: Finished difference Result 12460 states and 43711 transitions. [2021-07-13 19:51:46,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-07-13 19:51:46,884 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 [2021-07-13 19:51:46,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:51:46,912 INFO L225 Difference]: With dead ends: 12460 [2021-07-13 19:51:46,912 INFO L226 Difference]: Without dead ends: 12322 [2021-07-13 19:51:46,913 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2672 ImplicationChecksByTransitivity, 2147.6ms TimeCoverageRelationStatistics Valid=707, Invalid=7849, Unknown=0, NotChecked=0, Total=8556 [2021-07-13 19:51:46,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12322 states. [2021-07-13 19:51:47,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12322 to 7573. [2021-07-13 19:51:47,065 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) [2021-07-13 19:51:47,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7573 states to 7573 states and 26815 transitions. [2021-07-13 19:51:47,083 INFO L78 Accepts]: Start accepts. Automaton has 7573 states and 26815 transitions. Word has length 47 [2021-07-13 19:51:47,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:51:47,083 INFO L482 AbstractCegarLoop]: Abstraction has 7573 states and 26815 transitions. [2021-07-13 19:51:47,083 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) [2021-07-13 19:51:47,083 INFO L276 IsEmpty]: Start isEmpty. Operand 7573 states and 26815 transitions. [2021-07-13 19:51:47,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:51:47,096 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:51:47,096 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] [2021-07-13 19:51:47,096 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2021-07-13 19:51:47,096 INFO L430 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:51:47,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:51:47,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1083848734, now seen corresponding path program 155 times [2021-07-13 19:51:47,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:51:47,096 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848427676] [2021-07-13 19:51:47,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:51:47,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:51:47,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:51:47,311 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:51:47,311 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848427676] [2021-07-13 19:51:47,311 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848427676] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:51:47,311 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:51:47,311 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:51:47,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384571235] [2021-07-13 19:51:47,311 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:51:47,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:51:47,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:51:47,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:51:47,312 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) [2021-07-13 19:51:51,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:51:51,474 INFO L93 Difference]: Finished difference Result 13753 states and 48494 transitions. [2021-07-13 19:51:51,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-07-13 19:51:51,474 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 [2021-07-13 19:51:51,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:51:51,504 INFO L225 Difference]: With dead ends: 13753 [2021-07-13 19:51:51,504 INFO L226 Difference]: Without dead ends: 13658 [2021-07-13 19:51:51,505 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3421 ImplicationChecksByTransitivity, 2452.0ms TimeCoverageRelationStatistics Valid=827, Invalid=9679, Unknown=0, NotChecked=0, Total=10506 [2021-07-13 19:51:51,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13658 states. [2021-07-13 19:51:51,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13658 to 7575. [2021-07-13 19:51:51,667 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) [2021-07-13 19:51:51,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7575 states to 7575 states and 26826 transitions. [2021-07-13 19:51:51,686 INFO L78 Accepts]: Start accepts. Automaton has 7575 states and 26826 transitions. Word has length 47 [2021-07-13 19:51:51,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:51:51,686 INFO L482 AbstractCegarLoop]: Abstraction has 7575 states and 26826 transitions. [2021-07-13 19:51:51,686 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) [2021-07-13 19:51:51,686 INFO L276 IsEmpty]: Start isEmpty. Operand 7575 states and 26826 transitions. [2021-07-13 19:51:51,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:51:51,699 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:51:51,699 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] [2021-07-13 19:51:51,699 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2021-07-13 19:51:51,699 INFO L430 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:51:51,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:51:51,700 INFO L82 PathProgramCache]: Analyzing trace with hash -369181508, now seen corresponding path program 156 times [2021-07-13 19:51:51,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:51:51,700 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980734025] [2021-07-13 19:51:51,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:51:51,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:51:51,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:51:51,910 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:51:51,910 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980734025] [2021-07-13 19:51:51,910 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980734025] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:51:51,910 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:51:51,910 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:51:51,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249636278] [2021-07-13 19:51:51,910 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:51:51,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:51:51,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:51:51,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:51:51,911 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) [2021-07-13 19:51:54,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:51:54,584 INFO L93 Difference]: Finished difference Result 11987 states and 42145 transitions. [2021-07-13 19:51:54,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-07-13 19:51:54,584 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 [2021-07-13 19:51:54,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:51:54,610 INFO L225 Difference]: With dead ends: 11987 [2021-07-13 19:51:54,610 INFO L226 Difference]: Without dead ends: 11887 [2021-07-13 19:51:54,611 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1594 ImplicationChecksByTransitivity, 1525.7ms TimeCoverageRelationStatistics Valid=496, Invalid=5054, Unknown=0, NotChecked=0, Total=5550 [2021-07-13 19:51:54,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11887 states. [2021-07-13 19:51:54,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11887 to 7584. [2021-07-13 19:51:54,760 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) [2021-07-13 19:51:54,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7584 states to 7584 states and 26848 transitions. [2021-07-13 19:51:54,778 INFO L78 Accepts]: Start accepts. Automaton has 7584 states and 26848 transitions. Word has length 47 [2021-07-13 19:51:54,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:51:54,779 INFO L482 AbstractCegarLoop]: Abstraction has 7584 states and 26848 transitions. [2021-07-13 19:51:54,779 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:51:54,779 INFO L276 IsEmpty]: Start isEmpty. Operand 7584 states and 26848 transitions. [2021-07-13 19:51:54,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:51:54,791 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:51:54,792 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] [2021-07-13 19:51:54,792 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2021-07-13 19:51:54,792 INFO L430 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:51:54,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:51:54,792 INFO L82 PathProgramCache]: Analyzing trace with hash -435244066, now seen corresponding path program 157 times [2021-07-13 19:51:54,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:51:54,792 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698139826] [2021-07-13 19:51:54,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:51:54,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:51:55,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:51:55,009 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:51:55,009 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698139826] [2021-07-13 19:51:55,009 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698139826] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:51:55,009 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:51:55,009 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:51:55,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739329709] [2021-07-13 19:51:55,009 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:51:55,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:51:55,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:51:55,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:51:55,009 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) [2021-07-13 19:51:58,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:51:58,220 INFO L93 Difference]: Finished difference Result 12952 states and 45755 transitions. [2021-07-13 19:51:58,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-07-13 19:51:58,221 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 [2021-07-13 19:51:58,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:51:58,250 INFO L225 Difference]: With dead ends: 12952 [2021-07-13 19:51:58,251 INFO L226 Difference]: Without dead ends: 12846 [2021-07-13 19:51:58,251 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2321 ImplicationChecksByTransitivity, 1860.3ms TimeCoverageRelationStatistics Valid=629, Invalid=7027, Unknown=0, NotChecked=0, Total=7656 [2021-07-13 19:51:58,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12846 states. [2021-07-13 19:51:58,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12846 to 7569. [2021-07-13 19:51:58,403 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) [2021-07-13 19:51:58,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7569 states to 7569 states and 26813 transitions. [2021-07-13 19:51:58,423 INFO L78 Accepts]: Start accepts. Automaton has 7569 states and 26813 transitions. Word has length 47 [2021-07-13 19:51:58,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:51:58,423 INFO L482 AbstractCegarLoop]: Abstraction has 7569 states and 26813 transitions. [2021-07-13 19:51:58,423 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) [2021-07-13 19:51:58,423 INFO L276 IsEmpty]: Start isEmpty. Operand 7569 states and 26813 transitions. [2021-07-13 19:51:58,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:51:58,436 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:51:58,437 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] [2021-07-13 19:51:58,437 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2021-07-13 19:51:58,437 INFO L430 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:51:58,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:51:58,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1827442044, now seen corresponding path program 158 times [2021-07-13 19:51:58,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:51:58,437 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073023997] [2021-07-13 19:51:58,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:51:58,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:51:58,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:51:58,642 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:51:58,642 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073023997] [2021-07-13 19:51:58,642 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073023997] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:51:58,642 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:51:58,642 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:51:58,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49593669] [2021-07-13 19:51:58,642 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:51:58,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:51:58,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:51:58,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:51:58,643 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) [2021-07-13 19:52:01,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:52:01,304 INFO L93 Difference]: Finished difference Result 10540 states and 36856 transitions. [2021-07-13 19:52:01,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-07-13 19:52:01,304 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 [2021-07-13 19:52:01,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:52:01,327 INFO L225 Difference]: With dead ends: 10540 [2021-07-13 19:52:01,327 INFO L226 Difference]: Without dead ends: 10403 [2021-07-13 19:52:01,327 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1534 ImplicationChecksByTransitivity, 1498.9ms TimeCoverageRelationStatistics Valid=470, Invalid=4932, Unknown=0, NotChecked=0, Total=5402 [2021-07-13 19:52:01,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10403 states. [2021-07-13 19:52:01,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10403 to 7605. [2021-07-13 19:52:01,469 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) [2021-07-13 19:52:01,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7605 states to 7605 states and 26903 transitions. [2021-07-13 19:52:01,487 INFO L78 Accepts]: Start accepts. Automaton has 7605 states and 26903 transitions. Word has length 47 [2021-07-13 19:52:01,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:52:01,487 INFO L482 AbstractCegarLoop]: Abstraction has 7605 states and 26903 transitions. [2021-07-13 19:52:01,488 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) [2021-07-13 19:52:01,488 INFO L276 IsEmpty]: Start isEmpty. Operand 7605 states and 26903 transitions. [2021-07-13 19:52:01,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:52:01,500 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:52:01,500 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] [2021-07-13 19:52:01,500 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2021-07-13 19:52:01,500 INFO L430 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:52:01,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:52:01,501 INFO L82 PathProgramCache]: Analyzing trace with hash -832931524, now seen corresponding path program 159 times [2021-07-13 19:52:01,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:52:01,501 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266351962] [2021-07-13 19:52:01,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:52:01,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:52:01,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:52:01,714 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:52:01,714 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266351962] [2021-07-13 19:52:01,714 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266351962] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:52:01,714 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:52:01,714 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:52:01,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689737548] [2021-07-13 19:52:01,714 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:52:01,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:52:01,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:52:01,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:52:01,715 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) [2021-07-13 19:52:05,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:52:05,151 INFO L93 Difference]: Finished difference Result 11201 states and 39141 transitions. [2021-07-13 19:52:05,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-07-13 19:52:05,152 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 [2021-07-13 19:52:05,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:52:05,208 INFO L225 Difference]: With dead ends: 11201 [2021-07-13 19:52:05,209 INFO L226 Difference]: Without dead ends: 11061 [2021-07-13 19:52:05,209 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2810 ImplicationChecksByTransitivity, 2161.3ms TimeCoverageRelationStatistics Valid=722, Invalid=8208, Unknown=0, NotChecked=0, Total=8930 [2021-07-13 19:52:05,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11061 states. [2021-07-13 19:52:05,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11061 to 7587. [2021-07-13 19:52:05,336 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) [2021-07-13 19:52:05,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7587 states to 7587 states and 26852 transitions. [2021-07-13 19:52:05,355 INFO L78 Accepts]: Start accepts. Automaton has 7587 states and 26852 transitions. Word has length 47 [2021-07-13 19:52:05,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:52:05,355 INFO L482 AbstractCegarLoop]: Abstraction has 7587 states and 26852 transitions. [2021-07-13 19:52:05,355 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) [2021-07-13 19:52:05,355 INFO L276 IsEmpty]: Start isEmpty. Operand 7587 states and 26852 transitions. [2021-07-13 19:52:05,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:52:05,369 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:52:05,369 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] [2021-07-13 19:52:05,369 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2021-07-13 19:52:05,369 INFO L430 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:52:05,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:52:05,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1265956066, now seen corresponding path program 160 times [2021-07-13 19:52:05,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:52:05,369 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500276976] [2021-07-13 19:52:05,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:52:05,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:52:05,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:52:05,588 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:52:05,588 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500276976] [2021-07-13 19:52:05,588 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500276976] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:52:05,588 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:52:05,588 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:52:05,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802728672] [2021-07-13 19:52:05,588 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:52:05,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:52:05,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:52:05,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:52:05,589 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) [2021-07-13 19:52:11,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:52:11,728 INFO L93 Difference]: Finished difference Result 13812 states and 48433 transitions. [2021-07-13 19:52:11,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2021-07-13 19:52:11,728 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 [2021-07-13 19:52:11,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:52:11,759 INFO L225 Difference]: With dead ends: 13812 [2021-07-13 19:52:11,759 INFO L226 Difference]: Without dead ends: 13438 [2021-07-13 19:52:11,761 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6484 ImplicationChecksByTransitivity, 3791.2ms TimeCoverageRelationStatistics Valid=1374, Invalid=16716, Unknown=0, NotChecked=0, Total=18090 [2021-07-13 19:52:11,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13438 states. [2021-07-13 19:52:11,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13438 to 7810. [2021-07-13 19:52:11,925 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) [2021-07-13 19:52:11,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7810 states to 7810 states and 27625 transitions. [2021-07-13 19:52:11,944 INFO L78 Accepts]: Start accepts. Automaton has 7810 states and 27625 transitions. Word has length 47 [2021-07-13 19:52:11,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:52:11,944 INFO L482 AbstractCegarLoop]: Abstraction has 7810 states and 27625 transitions. [2021-07-13 19:52:11,944 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) [2021-07-13 19:52:11,944 INFO L276 IsEmpty]: Start isEmpty. Operand 7810 states and 27625 transitions. [2021-07-13 19:52:11,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:52:11,957 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:52:11,957 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] [2021-07-13 19:52:11,957 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2021-07-13 19:52:11,957 INFO L430 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:52:11,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:52:11,957 INFO L82 PathProgramCache]: Analyzing trace with hash -2116607974, now seen corresponding path program 161 times [2021-07-13 19:52:11,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:52:11,957 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211517318] [2021-07-13 19:52:11,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:52:11,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:52:12,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:52:12,167 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:52:12,167 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211517318] [2021-07-13 19:52:12,167 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211517318] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:52:12,167 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:52:12,167 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:52:12,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264008176] [2021-07-13 19:52:12,168 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:52:12,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:52:12,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:52:12,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:52:12,168 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) [2021-07-13 19:52:17,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:52:17,738 INFO L93 Difference]: Finished difference Result 13744 states and 48414 transitions. [2021-07-13 19:52:17,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2021-07-13 19:52:17,739 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 [2021-07-13 19:52:17,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:52:17,810 INFO L225 Difference]: With dead ends: 13744 [2021-07-13 19:52:17,810 INFO L226 Difference]: Without dead ends: 13521 [2021-07-13 19:52:17,811 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5433 ImplicationChecksByTransitivity, 3344.0ms TimeCoverageRelationStatistics Valid=1224, Invalid=14276, Unknown=0, NotChecked=0, Total=15500 [2021-07-13 19:52:17,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13521 states. [2021-07-13 19:52:17,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13521 to 7542. [2021-07-13 19:52:17,958 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) [2021-07-13 19:52:17,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7542 states to 7542 states and 26672 transitions. [2021-07-13 19:52:17,976 INFO L78 Accepts]: Start accepts. Automaton has 7542 states and 26672 transitions. Word has length 47 [2021-07-13 19:52:17,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:52:17,976 INFO L482 AbstractCegarLoop]: Abstraction has 7542 states and 26672 transitions. [2021-07-13 19:52:17,976 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) [2021-07-13 19:52:17,976 INFO L276 IsEmpty]: Start isEmpty. Operand 7542 states and 26672 transitions. [2021-07-13 19:52:17,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:52:17,989 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:52:17,989 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] [2021-07-13 19:52:17,989 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2021-07-13 19:52:17,989 INFO L430 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:52:17,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:52:17,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1088988800, now seen corresponding path program 162 times [2021-07-13 19:52:17,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:52:17,989 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041801587] [2021-07-13 19:52:17,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:52:17,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:52:18,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:52:18,205 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:52:18,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041801587] [2021-07-13 19:52:18,206 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041801587] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:52:18,206 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:52:18,206 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:52:18,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061197349] [2021-07-13 19:52:18,206 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:52:18,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:52:18,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:52:18,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:52:18,206 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) [2021-07-13 19:52:21,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:52:21,867 INFO L93 Difference]: Finished difference Result 12404 states and 43474 transitions. [2021-07-13 19:52:21,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-07-13 19:52:21,867 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 [2021-07-13 19:52:21,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:52:21,895 INFO L225 Difference]: With dead ends: 12404 [2021-07-13 19:52:21,895 INFO L226 Difference]: Without dead ends: 12282 [2021-07-13 19:52:21,896 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2949 ImplicationChecksByTransitivity, 2236.1ms TimeCoverageRelationStatistics Valid=752, Invalid=8560, Unknown=0, NotChecked=0, Total=9312 [2021-07-13 19:52:21,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12282 states. [2021-07-13 19:52:22,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12282 to 7548. [2021-07-13 19:52:22,056 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) [2021-07-13 19:52:22,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7548 states to 7548 states and 26685 transitions. [2021-07-13 19:52:22,074 INFO L78 Accepts]: Start accepts. Automaton has 7548 states and 26685 transitions. Word has length 47 [2021-07-13 19:52:22,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:52:22,074 INFO L482 AbstractCegarLoop]: Abstraction has 7548 states and 26685 transitions. [2021-07-13 19:52:22,074 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) [2021-07-13 19:52:22,074 INFO L276 IsEmpty]: Start isEmpty. Operand 7548 states and 26685 transitions. [2021-07-13 19:52:22,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:52:22,087 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:52:22,088 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] [2021-07-13 19:52:22,088 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2021-07-13 19:52:22,088 INFO L430 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:52:22,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:52:22,088 INFO L82 PathProgramCache]: Analyzing trace with hash -74710148, now seen corresponding path program 163 times [2021-07-13 19:52:22,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:52:22,088 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96442501] [2021-07-13 19:52:22,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:52:22,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:52:22,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:52:22,335 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:52:22,335 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96442501] [2021-07-13 19:52:22,335 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96442501] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:52:22,335 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:52:22,335 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:52:22,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875226269] [2021-07-13 19:52:22,335 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:52:22,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:52:22,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:52:22,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:52:22,335 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) [2021-07-13 19:52:26,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:52:26,426 INFO L93 Difference]: Finished difference Result 13260 states and 46655 transitions. [2021-07-13 19:52:26,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-07-13 19:52:26,426 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 [2021-07-13 19:52:26,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:52:26,457 INFO L225 Difference]: With dead ends: 13260 [2021-07-13 19:52:26,457 INFO L226 Difference]: Without dead ends: 13145 [2021-07-13 19:52:26,458 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3332 ImplicationChecksByTransitivity, 2411.6ms TimeCoverageRelationStatistics Valid=809, Invalid=9493, Unknown=0, NotChecked=0, Total=10302 [2021-07-13 19:52:26,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13145 states. [2021-07-13 19:52:26,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13145 to 7550. [2021-07-13 19:52:26,607 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) [2021-07-13 19:52:26,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7550 states to 7550 states and 26690 transitions. [2021-07-13 19:52:26,625 INFO L78 Accepts]: Start accepts. Automaton has 7550 states and 26690 transitions. Word has length 47 [2021-07-13 19:52:26,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:52:26,626 INFO L482 AbstractCegarLoop]: Abstraction has 7550 states and 26690 transitions. [2021-07-13 19:52:26,626 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) [2021-07-13 19:52:26,626 INFO L276 IsEmpty]: Start isEmpty. Operand 7550 states and 26690 transitions. [2021-07-13 19:52:26,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:52:26,638 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:52:26,638 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] [2021-07-13 19:52:26,638 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2021-07-13 19:52:26,638 INFO L430 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:52:26,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:52:26,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1527740390, now seen corresponding path program 164 times [2021-07-13 19:52:26,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:52:26,638 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470730745] [2021-07-13 19:52:26,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:52:26,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:52:26,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:52:26,841 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:52:26,841 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470730745] [2021-07-13 19:52:26,841 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470730745] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:52:26,841 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:52:26,841 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:52:26,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997885747] [2021-07-13 19:52:26,841 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:52:26,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:52:26,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:52:26,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:52:26,841 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) [2021-07-13 19:52:29,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:52:29,395 INFO L93 Difference]: Finished difference Result 11476 states and 40361 transitions. [2021-07-13 19:52:29,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-07-13 19:52:29,395 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 [2021-07-13 19:52:29,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:52:29,421 INFO L225 Difference]: With dead ends: 11476 [2021-07-13 19:52:29,421 INFO L226 Difference]: Without dead ends: 11376 [2021-07-13 19:52:29,422 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1477 ImplicationChecksByTransitivity, 1452.5ms TimeCoverageRelationStatistics Valid=472, Invalid=4784, Unknown=0, NotChecked=0, Total=5256 [2021-07-13 19:52:29,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11376 states. [2021-07-13 19:52:29,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11376 to 7559. [2021-07-13 19:52:29,571 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) [2021-07-13 19:52:29,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7559 states to 7559 states and 26712 transitions. [2021-07-13 19:52:29,589 INFO L78 Accepts]: Start accepts. Automaton has 7559 states and 26712 transitions. Word has length 47 [2021-07-13 19:52:29,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:52:29,589 INFO L482 AbstractCegarLoop]: Abstraction has 7559 states and 26712 transitions. [2021-07-13 19:52:29,589 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:52:29,589 INFO L276 IsEmpty]: Start isEmpty. Operand 7559 states and 26712 transitions. [2021-07-13 19:52:29,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:52:29,602 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:52:29,602 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] [2021-07-13 19:52:29,602 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2021-07-13 19:52:29,602 INFO L430 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:52:29,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:52:29,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1593802948, now seen corresponding path program 165 times [2021-07-13 19:52:29,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:52:29,602 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507279568] [2021-07-13 19:52:29,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:52:29,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:52:29,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:52:29,853 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:52:29,853 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507279568] [2021-07-13 19:52:29,853 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507279568] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:52:29,853 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:52:29,853 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:52:29,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502842342] [2021-07-13 19:52:29,854 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:52:29,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:52:29,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:52:29,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:52:29,854 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) [2021-07-13 19:52:32,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:52:32,843 INFO L93 Difference]: Finished difference Result 12033 states and 42383 transitions. [2021-07-13 19:52:32,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-07-13 19:52:32,843 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 [2021-07-13 19:52:32,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:52:32,869 INFO L225 Difference]: With dead ends: 12033 [2021-07-13 19:52:32,870 INFO L226 Difference]: Without dead ends: 11913 [2021-07-13 19:52:32,870 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1873 ImplicationChecksByTransitivity, 1713.2ms TimeCoverageRelationStatistics Valid=536, Invalid=5944, Unknown=0, NotChecked=0, Total=6480 [2021-07-13 19:52:32,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11913 states. [2021-07-13 19:52:33,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11913 to 7530. [2021-07-13 19:52:33,017 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) [2021-07-13 19:52:33,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7530 states to 7530 states and 26646 transitions. [2021-07-13 19:52:33,035 INFO L78 Accepts]: Start accepts. Automaton has 7530 states and 26646 transitions. Word has length 47 [2021-07-13 19:52:33,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:52:33,035 INFO L482 AbstractCegarLoop]: Abstraction has 7530 states and 26646 transitions. [2021-07-13 19:52:33,035 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) [2021-07-13 19:52:33,035 INFO L276 IsEmpty]: Start isEmpty. Operand 7530 states and 26646 transitions. [2021-07-13 19:52:33,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:52:33,048 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:52:33,048 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] [2021-07-13 19:52:33,048 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2021-07-13 19:52:33,048 INFO L430 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:52:33,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:52:33,048 INFO L82 PathProgramCache]: Analyzing trace with hash -758680900, now seen corresponding path program 166 times [2021-07-13 19:52:33,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:52:33,048 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090424502] [2021-07-13 19:52:33,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:52:33,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:52:33,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:52:33,245 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:52:33,245 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090424502] [2021-07-13 19:52:33,245 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090424502] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:52:33,245 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:52:33,245 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:52:33,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009370188] [2021-07-13 19:52:33,245 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:52:33,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:52:33,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:52:33,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:52:33,246 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) [2021-07-13 19:52:36,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:52:36,259 INFO L93 Difference]: Finished difference Result 10968 states and 38743 transitions. [2021-07-13 19:52:36,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-07-13 19:52:36,260 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 [2021-07-13 19:52:36,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:52:36,284 INFO L225 Difference]: With dead ends: 10968 [2021-07-13 19:52:36,284 INFO L226 Difference]: Without dead ends: 10735 [2021-07-13 19:52:36,285 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1866 ImplicationChecksByTransitivity, 1732.1ms TimeCoverageRelationStatistics Valid=551, Invalid=5769, Unknown=0, NotChecked=0, Total=6320 [2021-07-13 19:52:36,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10735 states. [2021-07-13 19:52:36,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10735 to 7640. [2021-07-13 19:52:36,428 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) [2021-07-13 19:52:36,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7640 states to 7640 states and 27021 transitions. [2021-07-13 19:52:36,446 INFO L78 Accepts]: Start accepts. Automaton has 7640 states and 27021 transitions. Word has length 47 [2021-07-13 19:52:36,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:52:36,446 INFO L482 AbstractCegarLoop]: Abstraction has 7640 states and 27021 transitions. [2021-07-13 19:52:36,446 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) [2021-07-13 19:52:36,446 INFO L276 IsEmpty]: Start isEmpty. Operand 7640 states and 27021 transitions. [2021-07-13 19:52:36,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:52:36,458 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:52:36,458 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] [2021-07-13 19:52:36,458 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2021-07-13 19:52:36,459 INFO L430 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:52:36,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:52:36,459 INFO L82 PathProgramCache]: Analyzing trace with hash -2109429504, now seen corresponding path program 167 times [2021-07-13 19:52:36,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:52:36,459 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744749861] [2021-07-13 19:52:36,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:52:36,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:52:36,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:52:36,658 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:52:36,658 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744749861] [2021-07-13 19:52:36,658 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744749861] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:52:36,658 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:52:36,659 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:52:36,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807220129] [2021-07-13 19:52:36,659 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:52:36,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:52:36,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:52:36,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:52:36,659 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) [2021-07-13 19:52:42,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:52:42,119 INFO L93 Difference]: Finished difference Result 14411 states and 50935 transitions. [2021-07-13 19:52:42,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2021-07-13 19:52:42,119 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 [2021-07-13 19:52:42,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:52:42,150 INFO L225 Difference]: With dead ends: 14411 [2021-07-13 19:52:42,150 INFO L226 Difference]: Without dead ends: 14023 [2021-07-13 19:52:42,151 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5831 ImplicationChecksByTransitivity, 3398.1ms TimeCoverageRelationStatistics Valid=1330, Invalid=14926, Unknown=0, NotChecked=0, Total=16256 [2021-07-13 19:52:42,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14023 states. [2021-07-13 19:52:42,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14023 to 8088. [2021-07-13 19:52:42,348 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) [2021-07-13 19:52:42,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8088 states to 8088 states and 28686 transitions. [2021-07-13 19:52:42,368 INFO L78 Accepts]: Start accepts. Automaton has 8088 states and 28686 transitions. Word has length 47 [2021-07-13 19:52:42,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:52:42,368 INFO L482 AbstractCegarLoop]: Abstraction has 8088 states and 28686 transitions. [2021-07-13 19:52:42,368 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) [2021-07-13 19:52:42,368 INFO L276 IsEmpty]: Start isEmpty. Operand 8088 states and 28686 transitions. [2021-07-13 19:52:42,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:52:42,382 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:52:42,382 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] [2021-07-13 19:52:42,382 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2021-07-13 19:52:42,382 INFO L430 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:52:42,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:52:42,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1334885884, now seen corresponding path program 168 times [2021-07-13 19:52:42,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:52:42,383 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212368918] [2021-07-13 19:52:42,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:52:42,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:52:42,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:52:42,579 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:52:42,579 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212368918] [2021-07-13 19:52:42,579 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212368918] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:52:42,579 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:52:42,579 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:52:42,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046090328] [2021-07-13 19:52:42,579 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:52:42,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:52:42,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:52:42,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:52:42,580 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) [2021-07-13 19:52:47,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:52:47,044 INFO L93 Difference]: Finished difference Result 14138 states and 50378 transitions. [2021-07-13 19:52:47,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-07-13 19:52:47,044 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 [2021-07-13 19:52:47,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:52:47,076 INFO L225 Difference]: With dead ends: 14138 [2021-07-13 19:52:47,076 INFO L226 Difference]: Without dead ends: 13929 [2021-07-13 19:52:47,077 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4288 ImplicationChecksByTransitivity, 2706.8ms TimeCoverageRelationStatistics Valid=977, Invalid=11455, Unknown=0, NotChecked=0, Total=12432 [2021-07-13 19:52:47,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13929 states. [2021-07-13 19:52:47,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13929 to 8086. [2021-07-13 19:52:47,268 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) [2021-07-13 19:52:47,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8086 states to 8086 states and 28702 transitions. [2021-07-13 19:52:47,288 INFO L78 Accepts]: Start accepts. Automaton has 8086 states and 28702 transitions. Word has length 47 [2021-07-13 19:52:47,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:52:47,288 INFO L482 AbstractCegarLoop]: Abstraction has 8086 states and 28702 transitions. [2021-07-13 19:52:47,288 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) [2021-07-13 19:52:47,288 INFO L276 IsEmpty]: Start isEmpty. Operand 8086 states and 28702 transitions. [2021-07-13 19:52:47,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:52:47,302 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:52:47,302 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] [2021-07-13 19:52:47,302 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2021-07-13 19:52:47,302 INFO L430 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:52:47,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:52:47,302 INFO L82 PathProgramCache]: Analyzing trace with hash -784273860, now seen corresponding path program 169 times [2021-07-13 19:52:47,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:52:47,302 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996387355] [2021-07-13 19:52:47,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:52:47,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:52:47,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:52:47,495 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:52:47,495 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996387355] [2021-07-13 19:52:47,496 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996387355] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:52:47,496 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:52:47,496 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-13 19:52:47,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593443963] [2021-07-13 19:52:47,496 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 19:52:47,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:52:47,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 19:52:47,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-07-13 19:52:47,496 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) [2021-07-13 19:52:51,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:52:51,990 INFO L93 Difference]: Finished difference Result 12863 states and 44759 transitions. [2021-07-13 19:52:51,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-07-13 19:52:51,990 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 [2021-07-13 19:52:51,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:52:52,018 INFO L225 Difference]: With dead ends: 12863 [2021-07-13 19:52:52,018 INFO L226 Difference]: Without dead ends: 12427 [2021-07-13 19:52:52,019 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3987 ImplicationChecksByTransitivity, 2643.9ms TimeCoverageRelationStatistics Valid=929, Invalid=10627, Unknown=0, NotChecked=0, Total=11556 [2021-07-13 19:52:52,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12427 states. [2021-07-13 19:52:52,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12427 to 8011. [2021-07-13 19:52:52,199 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) [2021-07-13 19:52:52,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8011 states to 8011 states and 28326 transitions. [2021-07-13 19:52:52,219 INFO L78 Accepts]: Start accepts. Automaton has 8011 states and 28326 transitions. Word has length 47 [2021-07-13 19:52:52,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:52:52,220 INFO L482 AbstractCegarLoop]: Abstraction has 8011 states and 28326 transitions. [2021-07-13 19:52:52,220 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:52:52,220 INFO L276 IsEmpty]: Start isEmpty. Operand 8011 states and 28326 transitions. [2021-07-13 19:52:52,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:52:52,233 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:52:52,233 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] [2021-07-13 19:52:52,233 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2021-07-13 19:52:52,233 INFO L430 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:52:52,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:52:52,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1531818974, now seen corresponding path program 170 times [2021-07-13 19:52:52,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:52:52,234 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046737678] [2021-07-13 19:52:52,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:52:52,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:52:52,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:52:52,431 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:52:52,431 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046737678] [2021-07-13 19:52:52,432 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046737678] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:52:52,432 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:52:52,432 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:52:52,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840487301] [2021-07-13 19:52:52,432 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:52:52,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:52:52,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:52:52,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:52:52,432 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) [2021-07-13 19:52:57,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:52:57,823 INFO L93 Difference]: Finished difference Result 14239 states and 50041 transitions. [2021-07-13 19:52:57,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2021-07-13 19:52:57,823 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 [2021-07-13 19:52:57,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:52:57,855 INFO L225 Difference]: With dead ends: 14239 [2021-07-13 19:52:57,856 INFO L226 Difference]: Without dead ends: 13996 [2021-07-13 19:52:57,856 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5216 ImplicationChecksByTransitivity, 3203.5ms TimeCoverageRelationStatistics Valid=1170, Invalid=13592, Unknown=0, NotChecked=0, Total=14762 [2021-07-13 19:52:57,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13996 states. [2021-07-13 19:52:58,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13996 to 7879. [2021-07-13 19:52:58,021 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) [2021-07-13 19:52:58,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7879 states to 7879 states and 27849 transitions. [2021-07-13 19:52:58,041 INFO L78 Accepts]: Start accepts. Automaton has 7879 states and 27849 transitions. Word has length 47 [2021-07-13 19:52:58,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:52:58,041 INFO L482 AbstractCegarLoop]: Abstraction has 7879 states and 27849 transitions. [2021-07-13 19:52:58,041 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:52:58,041 INFO L276 IsEmpty]: Start isEmpty. Operand 7879 states and 27849 transitions. [2021-07-13 19:52:58,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:52:58,054 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:52:58,054 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] [2021-07-13 19:52:58,054 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2021-07-13 19:52:58,054 INFO L430 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:52:58,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:52:58,054 INFO L82 PathProgramCache]: Analyzing trace with hash 681167066, now seen corresponding path program 171 times [2021-07-13 19:52:58,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:52:58,055 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85429308] [2021-07-13 19:52:58,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:52:58,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:52:58,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:52:58,270 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:52:58,270 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85429308] [2021-07-13 19:52:58,270 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85429308] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:52:58,270 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:52:58,270 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:52:58,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288689290] [2021-07-13 19:52:58,270 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:52:58,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:52:58,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:52:58,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:52:58,271 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) [2021-07-13 19:53:03,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:53:03,610 INFO L93 Difference]: Finished difference Result 14617 states and 51563 transitions. [2021-07-13 19:53:03,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2021-07-13 19:53:03,610 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 [2021-07-13 19:53:03,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:53:03,644 INFO L225 Difference]: With dead ends: 14617 [2021-07-13 19:53:03,644 INFO L226 Difference]: Without dead ends: 14356 [2021-07-13 19:53:03,645 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5019 ImplicationChecksByTransitivity, 3090.5ms TimeCoverageRelationStatistics Valid=1131, Invalid=13149, Unknown=0, NotChecked=0, Total=14280 [2021-07-13 19:53:03,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14356 states. [2021-07-13 19:53:03,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14356 to 7709. [2021-07-13 19:53:03,813 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) [2021-07-13 19:53:03,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7709 states to 7709 states and 27269 transitions. [2021-07-13 19:53:03,832 INFO L78 Accepts]: Start accepts. Automaton has 7709 states and 27269 transitions. Word has length 47 [2021-07-13 19:53:03,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:53:03,832 INFO L482 AbstractCegarLoop]: Abstraction has 7709 states and 27269 transitions. [2021-07-13 19:53:03,832 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) [2021-07-13 19:53:03,832 INFO L276 IsEmpty]: Start isEmpty. Operand 7709 states and 27269 transitions. [2021-07-13 19:53:03,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:53:03,845 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:53:03,845 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] [2021-07-13 19:53:03,845 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2021-07-13 19:53:03,845 INFO L430 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:53:03,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:53:03,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1104012510, now seen corresponding path program 172 times [2021-07-13 19:53:03,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:53:03,845 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397441313] [2021-07-13 19:53:03,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:53:03,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:53:04,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:53:04,068 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:53:04,068 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397441313] [2021-07-13 19:53:04,068 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397441313] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:53:04,068 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:53:04,068 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:53:04,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128812613] [2021-07-13 19:53:04,068 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:53:04,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:53:04,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:53:04,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:53:04,069 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) [2021-07-13 19:53:07,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:53:07,509 INFO L93 Difference]: Finished difference Result 11299 states and 39822 transitions. [2021-07-13 19:53:07,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-07-13 19:53:07,509 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 [2021-07-13 19:53:07,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:53:07,534 INFO L225 Difference]: With dead ends: 11299 [2021-07-13 19:53:07,534 INFO L226 Difference]: Without dead ends: 11172 [2021-07-13 19:53:07,535 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2384 ImplicationChecksByTransitivity, 2002.6ms TimeCoverageRelationStatistics Valid=630, Invalid=7202, Unknown=0, NotChecked=0, Total=7832 [2021-07-13 19:53:07,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11172 states. [2021-07-13 19:53:07,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11172 to 7723. [2021-07-13 19:53:07,679 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) [2021-07-13 19:53:07,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7723 states to 7723 states and 27307 transitions. [2021-07-13 19:53:07,698 INFO L78 Accepts]: Start accepts. Automaton has 7723 states and 27307 transitions. Word has length 47 [2021-07-13 19:53:07,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:53:07,698 INFO L482 AbstractCegarLoop]: Abstraction has 7723 states and 27307 transitions. [2021-07-13 19:53:07,698 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) [2021-07-13 19:53:07,698 INFO L276 IsEmpty]: Start isEmpty. Operand 7723 states and 27307 transitions. [2021-07-13 19:53:07,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:53:07,712 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:53:07,712 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] [2021-07-13 19:53:07,712 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2021-07-13 19:53:07,712 INFO L430 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:53:07,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:53:07,712 INFO L82 PathProgramCache]: Analyzing trace with hash -246736094, now seen corresponding path program 173 times [2021-07-13 19:53:07,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:53:07,712 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653801187] [2021-07-13 19:53:07,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:53:07,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:53:07,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:53:07,954 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:53:07,954 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653801187] [2021-07-13 19:53:07,955 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653801187] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:53:07,955 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:53:07,955 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:53:07,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571135553] [2021-07-13 19:53:07,955 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:53:07,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:53:07,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:53:07,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:53:07,955 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) [2021-07-13 19:53:13,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:53:13,822 INFO L93 Difference]: Finished difference Result 14753 states and 52239 transitions. [2021-07-13 19:53:13,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2021-07-13 19:53:13,822 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 [2021-07-13 19:53:13,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:53:13,856 INFO L225 Difference]: With dead ends: 14753 [2021-07-13 19:53:13,856 INFO L226 Difference]: Without dead ends: 14664 [2021-07-13 19:53:13,858 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6414 ImplicationChecksByTransitivity, 3570.7ms TimeCoverageRelationStatistics Valid=1380, Invalid=16442, Unknown=0, NotChecked=0, Total=17822 [2021-07-13 19:53:13,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14664 states. [2021-07-13 19:53:14,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14664 to 7739. [2021-07-13 19:53:14,031 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) [2021-07-13 19:53:14,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7739 states to 7739 states and 27353 transitions. [2021-07-13 19:53:14,050 INFO L78 Accepts]: Start accepts. Automaton has 7739 states and 27353 transitions. Word has length 47 [2021-07-13 19:53:14,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:53:14,050 INFO L482 AbstractCegarLoop]: Abstraction has 7739 states and 27353 transitions. [2021-07-13 19:53:14,050 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) [2021-07-13 19:53:14,050 INFO L276 IsEmpty]: Start isEmpty. Operand 7739 states and 27353 transitions. [2021-07-13 19:53:14,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:53:14,063 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:53:14,063 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] [2021-07-13 19:53:14,063 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2021-07-13 19:53:14,063 INFO L430 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:53:14,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:53:14,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1097388002, now seen corresponding path program 174 times [2021-07-13 19:53:14,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:53:14,063 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271108819] [2021-07-13 19:53:14,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:53:14,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:53:14,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:53:14,316 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:53:14,316 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271108819] [2021-07-13 19:53:14,316 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271108819] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:53:14,316 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:53:14,316 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:53:14,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322976511] [2021-07-13 19:53:14,316 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:53:14,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:53:14,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:53:14,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:53:14,317 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) [2021-07-13 19:53:19,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:53:19,213 INFO L93 Difference]: Finished difference Result 14273 states and 50778 transitions. [2021-07-13 19:53:19,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2021-07-13 19:53:19,214 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 [2021-07-13 19:53:19,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:53:19,248 INFO L225 Difference]: With dead ends: 14273 [2021-07-13 19:53:19,248 INFO L226 Difference]: Without dead ends: 14170 [2021-07-13 19:53:19,249 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5061 ImplicationChecksByTransitivity, 2982.6ms TimeCoverageRelationStatistics Valid=1067, Invalid=13453, Unknown=0, NotChecked=0, Total=14520 [2021-07-13 19:53:19,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14170 states. [2021-07-13 19:53:19,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14170 to 7719. [2021-07-13 19:53:19,452 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) [2021-07-13 19:53:19,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7719 states to 7719 states and 27301 transitions. [2021-07-13 19:53:19,471 INFO L78 Accepts]: Start accepts. Automaton has 7719 states and 27301 transitions. Word has length 47 [2021-07-13 19:53:19,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:53:19,471 INFO L482 AbstractCegarLoop]: Abstraction has 7719 states and 27301 transitions. [2021-07-13 19:53:19,471 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) [2021-07-13 19:53:19,471 INFO L276 IsEmpty]: Start isEmpty. Operand 7719 states and 27301 transitions. [2021-07-13 19:53:19,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:53:19,483 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:53:19,484 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] [2021-07-13 19:53:19,484 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2021-07-13 19:53:19,484 INFO L430 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:53:19,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:53:19,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1649031428, now seen corresponding path program 175 times [2021-07-13 19:53:19,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:53:19,484 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360121715] [2021-07-13 19:53:19,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:53:19,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:53:19,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:53:19,697 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:53:19,697 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360121715] [2021-07-13 19:53:19,698 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360121715] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:53:19,698 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:53:19,698 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:53:19,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821498460] [2021-07-13 19:53:19,698 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:53:19,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:53:19,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:53:19,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:53:19,698 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) [2021-07-13 19:53:22,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:53:22,530 INFO L93 Difference]: Finished difference Result 10633 states and 37445 transitions. [2021-07-13 19:53:22,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-07-13 19:53:22,531 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 [2021-07-13 19:53:22,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:53:22,553 INFO L225 Difference]: With dead ends: 10633 [2021-07-13 19:53:22,554 INFO L226 Difference]: Without dead ends: 10506 [2021-07-13 19:53:22,554 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1594 ImplicationChecksByTransitivity, 1536.6ms TimeCoverageRelationStatistics Valid=463, Invalid=5237, Unknown=0, NotChecked=0, Total=5700 [2021-07-13 19:53:22,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10506 states. [2021-07-13 19:53:22,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10506 to 7735. [2021-07-13 19:53:22,692 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) [2021-07-13 19:53:22,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7735 states to 7735 states and 27341 transitions. [2021-07-13 19:53:22,710 INFO L78 Accepts]: Start accepts. Automaton has 7735 states and 27341 transitions. Word has length 47 [2021-07-13 19:53:22,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:53:22,711 INFO L482 AbstractCegarLoop]: Abstraction has 7735 states and 27341 transitions. [2021-07-13 19:53:22,711 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) [2021-07-13 19:53:22,711 INFO L276 IsEmpty]: Start isEmpty. Operand 7735 states and 27341 transitions. [2021-07-13 19:53:22,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:53:22,723 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:53:22,723 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] [2021-07-13 19:53:22,723 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2021-07-13 19:53:22,723 INFO L430 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:53:22,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:53:22,724 INFO L82 PathProgramCache]: Analyzing trace with hash 178339832, now seen corresponding path program 176 times [2021-07-13 19:53:22,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:53:22,724 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035462110] [2021-07-13 19:53:22,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:53:22,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:53:22,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:53:22,928 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:53:22,928 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035462110] [2021-07-13 19:53:22,928 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035462110] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:53:22,928 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:53:22,928 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:53:22,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911486266] [2021-07-13 19:53:22,928 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:53:22,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:53:22,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:53:22,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:53:22,929 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) [2021-07-13 19:53:25,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:53:25,333 INFO L93 Difference]: Finished difference Result 9833 states and 34722 transitions. [2021-07-13 19:53:25,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-07-13 19:53:25,334 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 [2021-07-13 19:53:25,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:53:25,355 INFO L225 Difference]: With dead ends: 9833 [2021-07-13 19:53:25,356 INFO L226 Difference]: Without dead ends: 9736 [2021-07-13 19:53:25,356 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1383 ImplicationChecksByTransitivity, 1383.9ms TimeCoverageRelationStatistics Valid=425, Invalid=4545, Unknown=0, NotChecked=0, Total=4970 [2021-07-13 19:53:25,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9736 states. [2021-07-13 19:53:25,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9736 to 7741. [2021-07-13 19:53:25,486 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) [2021-07-13 19:53:25,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7741 states to 7741 states and 27356 transitions. [2021-07-13 19:53:25,505 INFO L78 Accepts]: Start accepts. Automaton has 7741 states and 27356 transitions. Word has length 47 [2021-07-13 19:53:25,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:53:25,505 INFO L482 AbstractCegarLoop]: Abstraction has 7741 states and 27356 transitions. [2021-07-13 19:53:25,505 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) [2021-07-13 19:53:25,505 INFO L276 IsEmpty]: Start isEmpty. Operand 7741 states and 27356 transitions. [2021-07-13 19:53:25,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:53:25,518 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:53:25,518 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] [2021-07-13 19:53:25,518 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2021-07-13 19:53:25,518 INFO L430 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:53:25,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:53:25,518 INFO L82 PathProgramCache]: Analyzing trace with hash 181013658, now seen corresponding path program 177 times [2021-07-13 19:53:25,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:53:25,518 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128611646] [2021-07-13 19:53:25,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:53:25,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:53:25,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:53:25,733 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:53:25,733 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128611646] [2021-07-13 19:53:25,733 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128611646] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:53:25,733 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:53:25,733 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:53:25,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045586999] [2021-07-13 19:53:25,733 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:53:25,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:53:25,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:53:25,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:53:25,734 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) [2021-07-13 19:53:28,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:53:28,645 INFO L93 Difference]: Finished difference Result 10505 states and 37061 transitions. [2021-07-13 19:53:28,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-07-13 19:53:28,645 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 [2021-07-13 19:53:28,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:53:28,668 INFO L225 Difference]: With dead ends: 10505 [2021-07-13 19:53:28,668 INFO L226 Difference]: Without dead ends: 10396 [2021-07-13 19:53:28,669 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1928 ImplicationChecksByTransitivity, 1681.0ms TimeCoverageRelationStatistics Valid=547, Invalid=6095, Unknown=0, NotChecked=0, Total=6642 [2021-07-13 19:53:28,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10396 states. [2021-07-13 19:53:28,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10396 to 7723. [2021-07-13 19:53:28,809 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) [2021-07-13 19:53:28,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7723 states to 7723 states and 27307 transitions. [2021-07-13 19:53:28,827 INFO L78 Accepts]: Start accepts. Automaton has 7723 states and 27307 transitions. Word has length 47 [2021-07-13 19:53:28,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:53:28,827 INFO L482 AbstractCegarLoop]: Abstraction has 7723 states and 27307 transitions. [2021-07-13 19:53:28,827 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) [2021-07-13 19:53:28,827 INFO L276 IsEmpty]: Start isEmpty. Operand 7723 states and 27307 transitions. [2021-07-13 19:53:28,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:53:28,840 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:53:28,840 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] [2021-07-13 19:53:28,840 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2021-07-13 19:53:28,840 INFO L430 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:53:28,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:53:28,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1127458014, now seen corresponding path program 178 times [2021-07-13 19:53:28,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:53:28,841 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037660487] [2021-07-13 19:53:28,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:53:28,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:53:29,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:53:29,107 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:53:29,107 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037660487] [2021-07-13 19:53:29,107 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037660487] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:53:29,107 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:53:29,107 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:53:29,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044512872] [2021-07-13 19:53:29,107 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:53:29,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:53:29,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:53:29,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:53:29,107 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) [2021-07-13 19:53:33,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:53:33,977 INFO L93 Difference]: Finished difference Result 12486 states and 43792 transitions. [2021-07-13 19:53:33,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2021-07-13 19:53:33,978 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 [2021-07-13 19:53:33,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:53:34,005 INFO L225 Difference]: With dead ends: 12486 [2021-07-13 19:53:34,005 INFO L226 Difference]: Without dead ends: 12268 [2021-07-13 19:53:34,007 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5343 ImplicationChecksByTransitivity, 3162.8ms TimeCoverageRelationStatistics Valid=1183, Invalid=14069, Unknown=0, NotChecked=0, Total=15252 [2021-07-13 19:53:34,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12268 states. [2021-07-13 19:53:34,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12268 to 8026. [2021-07-13 19:53:34,183 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) [2021-07-13 19:53:34,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8026 states to 8026 states and 28423 transitions. [2021-07-13 19:53:34,202 INFO L78 Accepts]: Start accepts. Automaton has 8026 states and 28423 transitions. Word has length 47 [2021-07-13 19:53:34,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:53:34,202 INFO L482 AbstractCegarLoop]: Abstraction has 8026 states and 28423 transitions. [2021-07-13 19:53:34,202 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) [2021-07-13 19:53:34,202 INFO L276 IsEmpty]: Start isEmpty. Operand 8026 states and 28423 transitions. [2021-07-13 19:53:34,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:53:34,215 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:53:34,215 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] [2021-07-13 19:53:34,216 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2021-07-13 19:53:34,216 INFO L430 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:53:34,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:53:34,216 INFO L82 PathProgramCache]: Analyzing trace with hash 443963422, now seen corresponding path program 179 times [2021-07-13 19:53:34,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:53:34,216 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850842685] [2021-07-13 19:53:34,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:53:34,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:53:34,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:53:34,427 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:53:34,427 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850842685] [2021-07-13 19:53:34,427 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850842685] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:53:34,427 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:53:34,427 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:53:34,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664828599] [2021-07-13 19:53:34,427 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:53:34,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:53:34,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:53:34,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:53:34,428 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) [2021-07-13 19:53:40,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:53:40,208 INFO L93 Difference]: Finished difference Result 14219 states and 50372 transitions. [2021-07-13 19:53:40,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2021-07-13 19:53:40,208 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 [2021-07-13 19:53:40,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:53:40,239 INFO L225 Difference]: With dead ends: 14219 [2021-07-13 19:53:40,239 INFO L226 Difference]: Without dead ends: 14124 [2021-07-13 19:53:40,240 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7407 ImplicationChecksByTransitivity, 3641.5ms TimeCoverageRelationStatistics Valid=1427, Invalid=18879, Unknown=0, NotChecked=0, Total=20306 [2021-07-13 19:53:40,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14124 states. [2021-07-13 19:53:40,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14124 to 8026. [2021-07-13 19:53:40,407 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) [2021-07-13 19:53:40,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8026 states to 8026 states and 28423 transitions. [2021-07-13 19:53:40,426 INFO L78 Accepts]: Start accepts. Automaton has 8026 states and 28423 transitions. Word has length 47 [2021-07-13 19:53:40,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:53:40,427 INFO L482 AbstractCegarLoop]: Abstraction has 8026 states and 28423 transitions. [2021-07-13 19:53:40,427 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) [2021-07-13 19:53:40,427 INFO L276 IsEmpty]: Start isEmpty. Operand 8026 states and 28423 transitions. [2021-07-13 19:53:40,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:53:40,440 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:53:40,440 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] [2021-07-13 19:53:40,440 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2021-07-13 19:53:40,440 INFO L430 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:53:40,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:53:40,440 INFO L82 PathProgramCache]: Analyzing trace with hash 742855100, now seen corresponding path program 180 times [2021-07-13 19:53:40,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:53:40,441 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331535327] [2021-07-13 19:53:40,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:53:40,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:53:40,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:53:40,648 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:53:40,648 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331535327] [2021-07-13 19:53:40,648 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331535327] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:53:40,648 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:53:40,648 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:53:40,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833294690] [2021-07-13 19:53:40,648 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:53:40,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:53:40,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:53:40,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:53:40,648 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) [2021-07-13 19:53:43,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:53:43,857 INFO L93 Difference]: Finished difference Result 11464 states and 40386 transitions. [2021-07-13 19:53:43,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-07-13 19:53:43,857 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-13 19:53:43,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:53:43,917 INFO L225 Difference]: With dead ends: 11464 [2021-07-13 19:53:43,917 INFO L226 Difference]: Without dead ends: 11367 [2021-07-13 19:53:43,918 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2673 ImplicationChecksByTransitivity, 1926.4ms TimeCoverageRelationStatistics Valid=647, Invalid=7725, Unknown=0, NotChecked=0, Total=8372 [2021-07-13 19:53:43,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11367 states. [2021-07-13 19:53:44,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11367 to 8034. [2021-07-13 19:53:44,050 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) [2021-07-13 19:53:44,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8034 states to 8034 states and 28441 transitions. [2021-07-13 19:53:44,069 INFO L78 Accepts]: Start accepts. Automaton has 8034 states and 28441 transitions. Word has length 47 [2021-07-13 19:53:44,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:53:44,069 INFO L482 AbstractCegarLoop]: Abstraction has 8034 states and 28441 transitions. [2021-07-13 19:53:44,069 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) [2021-07-13 19:53:44,069 INFO L276 IsEmpty]: Start isEmpty. Operand 8034 states and 28441 transitions. [2021-07-13 19:53:44,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:53:44,082 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:53:44,082 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] [2021-07-13 19:53:44,082 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2021-07-13 19:53:44,083 INFO L430 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:53:44,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:53:44,083 INFO L82 PathProgramCache]: Analyzing trace with hash -982565410, now seen corresponding path program 181 times [2021-07-13 19:53:44,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:53:44,083 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266455003] [2021-07-13 19:53:44,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:53:44,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:53:44,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:53:44,296 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:53:44,296 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266455003] [2021-07-13 19:53:44,296 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266455003] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:53:44,296 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:53:44,296 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:53:44,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605715886] [2021-07-13 19:53:44,296 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:53:44,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:53:44,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:53:44,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:53:44,297 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) [2021-07-13 19:53:48,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:53:48,328 INFO L93 Difference]: Finished difference Result 11873 states and 41988 transitions. [2021-07-13 19:53:48,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-07-13 19:53:48,329 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 [2021-07-13 19:53:48,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:53:48,357 INFO L225 Difference]: With dead ends: 11873 [2021-07-13 19:53:48,357 INFO L226 Difference]: Without dead ends: 11770 [2021-07-13 19:53:48,359 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3798 ImplicationChecksByTransitivity, 2545.9ms TimeCoverageRelationStatistics Valid=953, Invalid=10603, Unknown=0, NotChecked=0, Total=11556 [2021-07-13 19:53:48,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11770 states. [2021-07-13 19:53:48,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11770 to 8022. [2021-07-13 19:53:48,554 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) [2021-07-13 19:53:48,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8022 states to 8022 states and 28413 transitions. [2021-07-13 19:53:48,573 INFO L78 Accepts]: Start accepts. Automaton has 8022 states and 28413 transitions. Word has length 47 [2021-07-13 19:53:48,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:53:48,574 INFO L482 AbstractCegarLoop]: Abstraction has 8022 states and 28413 transitions. [2021-07-13 19:53:48,574 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) [2021-07-13 19:53:48,574 INFO L276 IsEmpty]: Start isEmpty. Operand 8022 states and 28413 transitions. [2021-07-13 19:53:48,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:53:48,587 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:53:48,587 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] [2021-07-13 19:53:48,587 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2021-07-13 19:53:48,587 INFO L430 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:53:48,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:53:48,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1088045692, now seen corresponding path program 182 times [2021-07-13 19:53:48,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:53:48,588 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242775851] [2021-07-13 19:53:48,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:53:48,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:53:48,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:53:48,790 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:53:48,790 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242775851] [2021-07-13 19:53:48,790 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242775851] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:53:48,790 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:53:48,790 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:53:48,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686708360] [2021-07-13 19:53:48,790 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:53:48,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:53:48,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:53:48,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:53:48,790 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) [2021-07-13 19:53:52,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:53:52,814 INFO L93 Difference]: Finished difference Result 11696 states and 41074 transitions. [2021-07-13 19:53:52,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-07-13 19:53:52,815 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-07-13 19:53:52,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:53:52,840 INFO L225 Difference]: With dead ends: 11696 [2021-07-13 19:53:52,841 INFO L226 Difference]: Without dead ends: 11462 [2021-07-13 19:53:52,842 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3751 ImplicationChecksByTransitivity, 2482.8ms TimeCoverageRelationStatistics Valid=899, Invalid=10231, Unknown=0, NotChecked=0, Total=11130 [2021-07-13 19:53:52,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11462 states. [2021-07-13 19:53:52,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11462 to 8168. [2021-07-13 19:53:53,007 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) [2021-07-13 19:53:53,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8168 states to 8168 states and 28954 transitions. [2021-07-13 19:53:53,027 INFO L78 Accepts]: Start accepts. Automaton has 8168 states and 28954 transitions. Word has length 47 [2021-07-13 19:53:53,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:53:53,027 INFO L482 AbstractCegarLoop]: Abstraction has 8168 states and 28954 transitions. [2021-07-13 19:53:53,027 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) [2021-07-13 19:53:53,027 INFO L276 IsEmpty]: Start isEmpty. Operand 8168 states and 28954 transitions. [2021-07-13 19:53:53,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:53:53,040 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:53:53,040 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] [2021-07-13 19:53:53,041 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2021-07-13 19:53:53,041 INFO L430 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:53:53,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:53:53,041 INFO L82 PathProgramCache]: Analyzing trace with hash 279105084, now seen corresponding path program 183 times [2021-07-13 19:53:53,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:53:53,041 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347214029] [2021-07-13 19:53:53,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:53:53,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:53:53,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:53:53,305 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:53:53,305 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347214029] [2021-07-13 19:53:53,305 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347214029] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:53:53,306 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:53:53,306 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:53:53,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408564183] [2021-07-13 19:53:53,306 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:53:53,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:53:53,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:53:53,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:53:53,306 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) [2021-07-13 19:53:57,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:53:57,564 INFO L93 Difference]: Finished difference Result 11561 states and 40520 transitions. [2021-07-13 19:53:57,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-07-13 19:53:57,565 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 [2021-07-13 19:53:57,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:53:57,590 INFO L225 Difference]: With dead ends: 11561 [2021-07-13 19:53:57,590 INFO L226 Difference]: Without dead ends: 11416 [2021-07-13 19:53:57,591 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4113 ImplicationChecksByTransitivity, 2641.8ms TimeCoverageRelationStatistics Valid=936, Invalid=11274, Unknown=0, NotChecked=0, Total=12210 [2021-07-13 19:53:57,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11416 states. [2021-07-13 19:53:57,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11416 to 8168. [2021-07-13 19:53:57,741 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) [2021-07-13 19:53:57,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8168 states to 8168 states and 28948 transitions. [2021-07-13 19:53:57,762 INFO L78 Accepts]: Start accepts. Automaton has 8168 states and 28948 transitions. Word has length 47 [2021-07-13 19:53:57,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:53:57,762 INFO L482 AbstractCegarLoop]: Abstraction has 8168 states and 28948 transitions. [2021-07-13 19:53:57,762 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) [2021-07-13 19:53:57,762 INFO L276 IsEmpty]: Start isEmpty. Operand 8168 states and 28948 transitions. [2021-07-13 19:53:57,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:53:57,775 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:53:57,775 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] [2021-07-13 19:53:57,775 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2021-07-13 19:53:57,775 INFO L430 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:53:57,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:53:57,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1179000862, now seen corresponding path program 184 times [2021-07-13 19:53:57,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:53:57,776 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24101593] [2021-07-13 19:53:57,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:53:57,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:53:57,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:53:57,989 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:53:57,989 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24101593] [2021-07-13 19:53:57,989 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24101593] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:53:57,989 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:53:57,989 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:53:57,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716725674] [2021-07-13 19:53:57,990 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:53:57,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:53:57,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:53:57,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:53:57,990 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) [2021-07-13 19:54:05,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:54:05,152 INFO L93 Difference]: Finished difference Result 17145 states and 60671 transitions. [2021-07-13 19:54:05,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2021-07-13 19:54:05,153 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 [2021-07-13 19:54:05,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:54:05,193 INFO L225 Difference]: With dead ends: 17145 [2021-07-13 19:54:05,193 INFO L226 Difference]: Without dead ends: 16701 [2021-07-13 19:54:05,195 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9514 ImplicationChecksByTransitivity, 4445.6ms TimeCoverageRelationStatistics Valid=1677, Invalid=23445, Unknown=0, NotChecked=0, Total=25122 [2021-07-13 19:54:05,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16701 states. [2021-07-13 19:54:05,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16701 to 8664. [2021-07-13 19:54:05,405 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) [2021-07-13 19:54:05,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8664 states to 8664 states and 30828 transitions. [2021-07-13 19:54:05,427 INFO L78 Accepts]: Start accepts. Automaton has 8664 states and 30828 transitions. Word has length 47 [2021-07-13 19:54:05,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:54:05,427 INFO L482 AbstractCegarLoop]: Abstraction has 8664 states and 30828 transitions. [2021-07-13 19:54:05,427 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) [2021-07-13 19:54:05,428 INFO L276 IsEmpty]: Start isEmpty. Operand 8664 states and 30828 transitions. [2021-07-13 19:54:05,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:54:05,442 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:54:05,443 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] [2021-07-13 19:54:05,443 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2021-07-13 19:54:05,443 INFO L430 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:54:05,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:54:05,443 INFO L82 PathProgramCache]: Analyzing trace with hash 328348954, now seen corresponding path program 185 times [2021-07-13 19:54:05,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:54:05,443 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026780228] [2021-07-13 19:54:05,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:54:05,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:54:05,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:54:05,677 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:54:05,677 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026780228] [2021-07-13 19:54:05,677 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026780228] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:54:05,677 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:54:05,677 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:54:05,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481462873] [2021-07-13 19:54:05,677 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:54:05,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:54:05,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:54:05,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:54:05,677 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) [2021-07-13 19:54:12,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:54:12,610 INFO L93 Difference]: Finished difference Result 16952 states and 60088 transitions. [2021-07-13 19:54:12,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2021-07-13 19:54:12,611 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 [2021-07-13 19:54:12,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:54:12,648 INFO L225 Difference]: With dead ends: 16952 [2021-07-13 19:54:12,648 INFO L226 Difference]: Without dead ends: 16744 [2021-07-13 19:54:12,649 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8465 ImplicationChecksByTransitivity, 4176.8ms TimeCoverageRelationStatistics Valid=1544, Invalid=21106, Unknown=0, NotChecked=0, Total=22650 [2021-07-13 19:54:12,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16744 states. [2021-07-13 19:54:12,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16744 to 8619. [2021-07-13 19:54:12,845 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) [2021-07-13 19:54:12,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8619 states to 8619 states and 30694 transitions. [2021-07-13 19:54:12,866 INFO L78 Accepts]: Start accepts. Automaton has 8619 states and 30694 transitions. Word has length 47 [2021-07-13 19:54:12,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:54:12,866 INFO L482 AbstractCegarLoop]: Abstraction has 8619 states and 30694 transitions. [2021-07-13 19:54:12,866 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) [2021-07-13 19:54:12,866 INFO L276 IsEmpty]: Start isEmpty. Operand 8619 states and 30694 transitions. [2021-07-13 19:54:12,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:54:12,881 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:54:12,881 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] [2021-07-13 19:54:12,881 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2021-07-13 19:54:12,881 INFO L430 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:54:12,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:54:12,881 INFO L82 PathProgramCache]: Analyzing trace with hash 2008950400, now seen corresponding path program 186 times [2021-07-13 19:54:12,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:54:12,881 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279066283] [2021-07-13 19:54:12,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:54:12,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:54:13,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:54:13,088 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:54:13,088 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279066283] [2021-07-13 19:54:13,088 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279066283] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:54:13,088 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:54:13,088 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:54:13,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082689755] [2021-07-13 19:54:13,088 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:54:13,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:54:13,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:54:13,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:54:13,089 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) [2021-07-13 19:54:18,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:54:18,185 INFO L93 Difference]: Finished difference Result 13187 states and 46449 transitions. [2021-07-13 19:54:18,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2021-07-13 19:54:18,185 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 [2021-07-13 19:54:18,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:54:18,215 INFO L225 Difference]: With dead ends: 13187 [2021-07-13 19:54:18,216 INFO L226 Difference]: Without dead ends: 13066 [2021-07-13 19:54:18,217 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5677 ImplicationChecksByTransitivity, 3260.4ms TimeCoverageRelationStatistics Valid=1222, Invalid=14780, Unknown=0, NotChecked=0, Total=16002 [2021-07-13 19:54:18,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13066 states. [2021-07-13 19:54:18,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13066 to 8619. [2021-07-13 19:54:18,471 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) [2021-07-13 19:54:18,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8619 states to 8619 states and 30694 transitions. [2021-07-13 19:54:18,492 INFO L78 Accepts]: Start accepts. Automaton has 8619 states and 30694 transitions. Word has length 47 [2021-07-13 19:54:18,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:54:18,492 INFO L482 AbstractCegarLoop]: Abstraction has 8619 states and 30694 transitions. [2021-07-13 19:54:18,492 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) [2021-07-13 19:54:18,492 INFO L276 IsEmpty]: Start isEmpty. Operand 8619 states and 30694 transitions. [2021-07-13 19:54:18,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:54:18,506 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:54:18,506 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] [2021-07-13 19:54:18,506 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2021-07-13 19:54:18,507 INFO L430 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:54:18,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:54:18,507 INFO L82 PathProgramCache]: Analyzing trace with hash -714595460, now seen corresponding path program 187 times [2021-07-13 19:54:18,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:54:18,507 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187830745] [2021-07-13 19:54:18,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:54:18,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:54:18,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:54:18,721 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:54:18,721 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187830745] [2021-07-13 19:54:18,721 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187830745] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:54:18,721 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:54:18,721 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:54:18,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224919672] [2021-07-13 19:54:18,721 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:54:18,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:54:18,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:54:18,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:54:18,721 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) [2021-07-13 19:54:25,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:54:25,151 INFO L93 Difference]: Finished difference Result 16101 states and 57229 transitions. [2021-07-13 19:54:25,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2021-07-13 19:54:25,151 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 [2021-07-13 19:54:25,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:54:25,191 INFO L225 Difference]: With dead ends: 16101 [2021-07-13 19:54:25,191 INFO L226 Difference]: Without dead ends: 15857 [2021-07-13 19:54:25,192 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7709 ImplicationChecksByTransitivity, 3976.6ms TimeCoverageRelationStatistics Valid=1488, Invalid=19392, Unknown=0, NotChecked=0, Total=20880 [2021-07-13 19:54:25,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15857 states. [2021-07-13 19:54:25,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15857 to 8790. [2021-07-13 19:54:25,385 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) [2021-07-13 19:54:25,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8790 states to 8790 states and 31353 transitions. [2021-07-13 19:54:25,406 INFO L78 Accepts]: Start accepts. Automaton has 8790 states and 31353 transitions. Word has length 47 [2021-07-13 19:54:25,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:54:25,406 INFO L482 AbstractCegarLoop]: Abstraction has 8790 states and 31353 transitions. [2021-07-13 19:54:25,407 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) [2021-07-13 19:54:25,407 INFO L276 IsEmpty]: Start isEmpty. Operand 8790 states and 31353 transitions. [2021-07-13 19:54:25,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:54:25,421 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:54:25,421 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] [2021-07-13 19:54:25,421 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2021-07-13 19:54:25,421 INFO L430 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:54:25,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:54:25,421 INFO L82 PathProgramCache]: Analyzing trace with hash -415703782, now seen corresponding path program 188 times [2021-07-13 19:54:25,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:54:25,422 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956748033] [2021-07-13 19:54:25,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:54:25,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:54:25,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:54:25,656 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:54:25,656 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956748033] [2021-07-13 19:54:25,656 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956748033] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:54:25,656 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:54:25,656 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:54:25,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355501616] [2021-07-13 19:54:25,656 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:54:25,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:54:25,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:54:25,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:54:25,657 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) [2021-07-13 19:54:29,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:54:29,907 INFO L93 Difference]: Finished difference Result 13159 states and 46549 transitions. [2021-07-13 19:54:29,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-07-13 19:54:29,907 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 [2021-07-13 19:54:29,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:54:29,937 INFO L225 Difference]: With dead ends: 13159 [2021-07-13 19:54:29,937 INFO L226 Difference]: Without dead ends: 13062 [2021-07-13 19:54:29,938 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3490 ImplicationChecksByTransitivity, 2639.5ms TimeCoverageRelationStatistics Valid=883, Invalid=9623, Unknown=0, NotChecked=0, Total=10506 [2021-07-13 19:54:29,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13062 states. [2021-07-13 19:54:30,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13062 to 8804. [2021-07-13 19:54:30,108 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) [2021-07-13 19:54:30,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8804 states to 8804 states and 31380 transitions. [2021-07-13 19:54:30,131 INFO L78 Accepts]: Start accepts. Automaton has 8804 states and 31380 transitions. Word has length 47 [2021-07-13 19:54:30,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:54:30,131 INFO L482 AbstractCegarLoop]: Abstraction has 8804 states and 31380 transitions. [2021-07-13 19:54:30,131 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) [2021-07-13 19:54:30,131 INFO L276 IsEmpty]: Start isEmpty. Operand 8804 states and 31380 transitions. [2021-07-13 19:54:30,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:54:30,146 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:54:30,146 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] [2021-07-13 19:54:30,146 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2021-07-13 19:54:30,146 INFO L430 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:54:30,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:54:30,146 INFO L82 PathProgramCache]: Analyzing trace with hash -2141124292, now seen corresponding path program 189 times [2021-07-13 19:54:30,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:54:30,146 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487943662] [2021-07-13 19:54:30,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:54:30,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:54:30,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:54:30,360 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:54:30,360 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487943662] [2021-07-13 19:54:30,360 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487943662] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:54:30,360 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:54:30,360 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:54:30,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091069225] [2021-07-13 19:54:30,361 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:54:30,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:54:30,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:54:30,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:54:30,361 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) [2021-07-13 19:54:34,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:54:34,630 INFO L93 Difference]: Finished difference Result 13458 states and 47653 transitions. [2021-07-13 19:54:34,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-07-13 19:54:34,631 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 [2021-07-13 19:54:34,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:54:34,662 INFO L225 Difference]: With dead ends: 13458 [2021-07-13 19:54:34,662 INFO L226 Difference]: Without dead ends: 13341 [2021-07-13 19:54:34,663 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4019 ImplicationChecksByTransitivity, 2637.8ms TimeCoverageRelationStatistics Valid=983, Invalid=11007, Unknown=0, NotChecked=0, Total=11990 [2021-07-13 19:54:34,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13341 states. [2021-07-13 19:54:34,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13341 to 8778. [2021-07-13 19:54:34,830 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) [2021-07-13 19:54:34,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8778 states to 8778 states and 31315 transitions. [2021-07-13 19:54:34,852 INFO L78 Accepts]: Start accepts. Automaton has 8778 states and 31315 transitions. Word has length 47 [2021-07-13 19:54:34,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:54:34,852 INFO L482 AbstractCegarLoop]: Abstraction has 8778 states and 31315 transitions. [2021-07-13 19:54:34,852 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) [2021-07-13 19:54:34,852 INFO L276 IsEmpty]: Start isEmpty. Operand 8778 states and 31315 transitions. [2021-07-13 19:54:34,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:54:34,866 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:54:34,866 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] [2021-07-13 19:54:34,866 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2021-07-13 19:54:34,867 INFO L430 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:54:34,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:54:34,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1066695164, now seen corresponding path program 190 times [2021-07-13 19:54:34,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:54:34,867 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595557498] [2021-07-13 19:54:34,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:54:34,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:54:35,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:54:35,083 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:54:35,083 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595557498] [2021-07-13 19:54:35,083 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595557498] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:54:35,083 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:54:35,083 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:54:35,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132713499] [2021-07-13 19:54:35,083 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:54:35,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:54:35,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:54:35,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:54:35,084 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) [2021-07-13 19:54:38,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:54:38,231 INFO L93 Difference]: Finished difference Result 13381 states and 47217 transitions. [2021-07-13 19:54:38,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-07-13 19:54:38,232 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 [2021-07-13 19:54:38,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:54:38,264 INFO L225 Difference]: With dead ends: 13381 [2021-07-13 19:54:38,265 INFO L226 Difference]: Without dead ends: 13254 [2021-07-13 19:54:38,265 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2057 ImplicationChecksByTransitivity, 1723.4ms TimeCoverageRelationStatistics Valid=572, Invalid=6400, Unknown=0, NotChecked=0, Total=6972 [2021-07-13 19:54:38,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13254 states. [2021-07-13 19:54:38,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13254 to 8810. [2021-07-13 19:54:38,431 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) [2021-07-13 19:54:38,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8810 states to 8810 states and 31409 transitions. [2021-07-13 19:54:38,518 INFO L78 Accepts]: Start accepts. Automaton has 8810 states and 31409 transitions. Word has length 47 [2021-07-13 19:54:38,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:54:38,518 INFO L482 AbstractCegarLoop]: Abstraction has 8810 states and 31409 transitions. [2021-07-13 19:54:38,518 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) [2021-07-13 19:54:38,518 INFO L276 IsEmpty]: Start isEmpty. Operand 8810 states and 31409 transitions. [2021-07-13 19:54:38,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:54:38,533 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:54:38,533 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] [2021-07-13 19:54:38,533 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2021-07-13 19:54:38,533 INFO L430 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:54:38,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:54:38,534 INFO L82 PathProgramCache]: Analyzing trace with hash -304502242, now seen corresponding path program 191 times [2021-07-13 19:54:38,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:54:38,534 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025766234] [2021-07-13 19:54:38,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:54:38,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:54:38,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:54:38,751 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:54:38,751 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025766234] [2021-07-13 19:54:38,751 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025766234] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:54:38,751 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:54:38,751 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:54:38,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072553576] [2021-07-13 19:54:38,751 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:54:38,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:54:38,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:54:38,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:54:38,752 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) [2021-07-13 19:54:41,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:54:41,749 INFO L93 Difference]: Finished difference Result 13062 states and 46105 transitions. [2021-07-13 19:54:41,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-07-13 19:54:41,749 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 [2021-07-13 19:54:41,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:54:41,782 INFO L225 Difference]: With dead ends: 13062 [2021-07-13 19:54:41,782 INFO L226 Difference]: Without dead ends: 12962 [2021-07-13 19:54:41,782 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1882 ImplicationChecksByTransitivity, 1711.9ms TimeCoverageRelationStatistics Valid=557, Invalid=5923, Unknown=0, NotChecked=0, Total=6480 [2021-07-13 19:54:41,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12962 states. [2021-07-13 19:54:41,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12962 to 8837. [2021-07-13 19:54:41,954 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) [2021-07-13 19:54:41,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8837 states to 8837 states and 31475 transitions. [2021-07-13 19:54:41,976 INFO L78 Accepts]: Start accepts. Automaton has 8837 states and 31475 transitions. Word has length 47 [2021-07-13 19:54:41,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:54:41,977 INFO L482 AbstractCegarLoop]: Abstraction has 8837 states and 31475 transitions. [2021-07-13 19:54:41,977 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) [2021-07-13 19:54:41,977 INFO L276 IsEmpty]: Start isEmpty. Operand 8837 states and 31475 transitions. [2021-07-13 19:54:41,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:54:41,992 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:54:41,992 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] [2021-07-13 19:54:41,992 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2021-07-13 19:54:41,992 INFO L430 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:54:41,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:54:41,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1739569732, now seen corresponding path program 192 times [2021-07-13 19:54:41,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:54:41,993 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584419582] [2021-07-13 19:54:41,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:54:41,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:54:42,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:54:42,211 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:54:42,212 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584419582] [2021-07-13 19:54:42,212 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584419582] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:54:42,212 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:54:42,212 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:54:42,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018251339] [2021-07-13 19:54:42,212 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:54:42,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:54:42,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:54:42,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:54:42,212 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) [2021-07-13 19:54:45,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:54:45,693 INFO L93 Difference]: Finished difference Result 13918 states and 49230 transitions. [2021-07-13 19:54:45,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-07-13 19:54:45,694 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 [2021-07-13 19:54:45,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:54:45,727 INFO L225 Difference]: With dead ends: 13918 [2021-07-13 19:54:45,727 INFO L226 Difference]: Without dead ends: 13800 [2021-07-13 19:54:45,727 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2533 ImplicationChecksByTransitivity, 1905.0ms TimeCoverageRelationStatistics Valid=652, Invalid=7538, Unknown=0, NotChecked=0, Total=8190 [2021-07-13 19:54:45,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13800 states. [2021-07-13 19:54:45,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13800 to 8810. [2021-07-13 19:54:45,895 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) [2021-07-13 19:54:45,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8810 states to 8810 states and 31405 transitions. [2021-07-13 19:54:45,917 INFO L78 Accepts]: Start accepts. Automaton has 8810 states and 31405 transitions. Word has length 47 [2021-07-13 19:54:45,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:54:45,917 INFO L482 AbstractCegarLoop]: Abstraction has 8810 states and 31405 transitions. [2021-07-13 19:54:45,917 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) [2021-07-13 19:54:45,917 INFO L276 IsEmpty]: Start isEmpty. Operand 8810 states and 31405 transitions. [2021-07-13 19:54:45,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:54:45,932 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:54:45,933 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] [2021-07-13 19:54:45,933 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2021-07-13 19:54:45,933 INFO L430 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:54:45,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:54:45,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1181703390, now seen corresponding path program 193 times [2021-07-13 19:54:45,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:54:45,933 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576380704] [2021-07-13 19:54:45,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:54:45,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:54:46,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:54:46,151 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:54:46,151 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576380704] [2021-07-13 19:54:46,151 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576380704] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:54:46,151 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:54:46,152 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:54:46,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345786437] [2021-07-13 19:54:46,152 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:54:46,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:54:46,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:54:46,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:54:46,152 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) [2021-07-13 19:54:49,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:54:49,727 INFO L93 Difference]: Finished difference Result 13889 states and 49051 transitions. [2021-07-13 19:54:49,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-07-13 19:54:49,728 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 [2021-07-13 19:54:49,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:54:49,762 INFO L225 Difference]: With dead ends: 13889 [2021-07-13 19:54:49,762 INFO L226 Difference]: Without dead ends: 13800 [2021-07-13 19:54:49,763 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2744 ImplicationChecksByTransitivity, 2146.2ms TimeCoverageRelationStatistics Valid=704, Invalid=8038, Unknown=0, NotChecked=0, Total=8742 [2021-07-13 19:54:49,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13800 states. [2021-07-13 19:54:49,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13800 to 8818. [2021-07-13 19:54:49,993 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) [2021-07-13 19:54:50,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8818 states to 8818 states and 31425 transitions. [2021-07-13 19:54:50,017 INFO L78 Accepts]: Start accepts. Automaton has 8818 states and 31425 transitions. Word has length 47 [2021-07-13 19:54:50,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:54:50,017 INFO L482 AbstractCegarLoop]: Abstraction has 8818 states and 31425 transitions. [2021-07-13 19:54:50,017 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) [2021-07-13 19:54:50,017 INFO L276 IsEmpty]: Start isEmpty. Operand 8818 states and 31425 transitions. [2021-07-13 19:54:50,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:54:50,032 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:54:50,032 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] [2021-07-13 19:54:50,032 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2021-07-13 19:54:50,032 INFO L430 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:54:50,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:54:50,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1703636190, now seen corresponding path program 194 times [2021-07-13 19:54:50,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:54:50,033 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595131355] [2021-07-13 19:54:50,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:54:50,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:54:50,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:54:50,248 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:54:50,248 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595131355] [2021-07-13 19:54:50,249 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595131355] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:54:50,249 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:54:50,249 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:54:50,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761258182] [2021-07-13 19:54:50,249 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:54:50,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:54:50,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:54:50,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:54:50,249 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) [2021-07-13 19:54:53,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:54:53,378 INFO L93 Difference]: Finished difference Result 13367 states and 47168 transitions. [2021-07-13 19:54:53,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-07-13 19:54:53,378 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 [2021-07-13 19:54:53,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:54:53,410 INFO L225 Difference]: With dead ends: 13367 [2021-07-13 19:54:53,410 INFO L226 Difference]: Without dead ends: 13261 [2021-07-13 19:54:53,411 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1875 ImplicationChecksByTransitivity, 1821.9ms TimeCoverageRelationStatistics Valid=584, Invalid=5896, Unknown=0, NotChecked=0, Total=6480 [2021-07-13 19:54:53,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13261 states. [2021-07-13 19:54:53,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13261 to 8812. [2021-07-13 19:54:53,586 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) [2021-07-13 19:54:53,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8812 states to 8812 states and 31408 transitions. [2021-07-13 19:54:53,608 INFO L78 Accepts]: Start accepts. Automaton has 8812 states and 31408 transitions. Word has length 47 [2021-07-13 19:54:53,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:54:53,608 INFO L482 AbstractCegarLoop]: Abstraction has 8812 states and 31408 transitions. [2021-07-13 19:54:53,608 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) [2021-07-13 19:54:53,608 INFO L276 IsEmpty]: Start isEmpty. Operand 8812 states and 31408 transitions. [2021-07-13 19:54:53,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:54:53,623 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:54:53,623 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] [2021-07-13 19:54:53,624 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2021-07-13 19:54:53,624 INFO L430 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:54:53,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:54:53,624 INFO L82 PathProgramCache]: Analyzing trace with hash 496534716, now seen corresponding path program 195 times [2021-07-13 19:54:53,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:54:53,624 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915190008] [2021-07-13 19:54:53,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:54:53,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:54:53,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:54:53,846 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:54:53,847 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915190008] [2021-07-13 19:54:53,847 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915190008] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:54:53,847 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:54:53,847 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:54:53,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009326592] [2021-07-13 19:54:53,847 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:54:53,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:54:53,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:54:53,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:54:53,847 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) [2021-07-13 19:54:57,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:54:57,192 INFO L93 Difference]: Finished difference Result 13612 states and 48120 transitions. [2021-07-13 19:54:57,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-07-13 19:54:57,193 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 [2021-07-13 19:54:57,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:54:57,225 INFO L225 Difference]: With dead ends: 13612 [2021-07-13 19:54:57,225 INFO L226 Difference]: Without dead ends: 13512 [2021-07-13 19:54:57,226 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2185 ImplicationChecksByTransitivity, 1963.5ms TimeCoverageRelationStatistics Valid=635, Invalid=6675, Unknown=0, NotChecked=0, Total=7310 [2021-07-13 19:54:57,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13512 states. [2021-07-13 19:54:57,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13512 to 8821. [2021-07-13 19:54:57,400 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) [2021-07-13 19:54:57,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8821 states to 8821 states and 31430 transitions. [2021-07-13 19:54:57,422 INFO L78 Accepts]: Start accepts. Automaton has 8821 states and 31430 transitions. Word has length 47 [2021-07-13 19:54:57,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:54:57,422 INFO L482 AbstractCegarLoop]: Abstraction has 8821 states and 31430 transitions. [2021-07-13 19:54:57,423 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) [2021-07-13 19:54:57,423 INFO L276 IsEmpty]: Start isEmpty. Operand 8821 states and 31430 transitions. [2021-07-13 19:54:57,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:54:57,437 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:54:57,438 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] [2021-07-13 19:54:57,438 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2021-07-13 19:54:57,438 INFO L430 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:54:57,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:54:57,438 INFO L82 PathProgramCache]: Analyzing trace with hash 430472158, now seen corresponding path program 196 times [2021-07-13 19:54:57,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:54:57,438 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192800044] [2021-07-13 19:54:57,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:54:57,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:54:57,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:54:57,656 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:54:57,656 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192800044] [2021-07-13 19:54:57,656 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192800044] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:54:57,656 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:54:57,656 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:54:57,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691735306] [2021-07-13 19:54:57,656 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:54:57,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:54:57,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:54:57,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:54:57,657 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) [2021-07-13 19:55:01,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:55:01,253 INFO L93 Difference]: Finished difference Result 14468 states and 51245 transitions. [2021-07-13 19:55:01,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-07-13 19:55:01,253 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 [2021-07-13 19:55:01,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:55:01,290 INFO L225 Difference]: With dead ends: 14468 [2021-07-13 19:55:01,290 INFO L226 Difference]: Without dead ends: 14362 [2021-07-13 19:55:01,291 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2884 ImplicationChecksByTransitivity, 2113.5ms TimeCoverageRelationStatistics Valid=724, Invalid=8396, Unknown=0, NotChecked=0, Total=9120 [2021-07-13 19:55:01,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14362 states. [2021-07-13 19:55:01,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14362 to 8806. [2021-07-13 19:55:01,513 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) [2021-07-13 19:55:01,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8806 states to 8806 states and 31395 transitions. [2021-07-13 19:55:01,536 INFO L78 Accepts]: Start accepts. Automaton has 8806 states and 31395 transitions. Word has length 47 [2021-07-13 19:55:01,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:55:01,536 INFO L482 AbstractCegarLoop]: Abstraction has 8806 states and 31395 transitions. [2021-07-13 19:55:01,536 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) [2021-07-13 19:55:01,536 INFO L276 IsEmpty]: Start isEmpty. Operand 8806 states and 31395 transitions. [2021-07-13 19:55:01,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:55:01,551 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:55:01,551 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] [2021-07-13 19:55:01,551 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2021-07-13 19:55:01,551 INFO L430 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:55:01,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:55:01,551 INFO L82 PathProgramCache]: Analyzing trace with hash 2094935804, now seen corresponding path program 197 times [2021-07-13 19:55:01,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:55:01,552 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278165484] [2021-07-13 19:55:01,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:55:01,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:55:01,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:55:01,778 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:55:01,778 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278165484] [2021-07-13 19:55:01,778 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278165484] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:55:01,778 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:55:01,778 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:55:01,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609377777] [2021-07-13 19:55:01,779 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:55:01,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:55:01,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:55:01,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:55:01,779 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) [2021-07-13 19:55:05,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:55:05,163 INFO L93 Difference]: Finished difference Result 12311 states and 43489 transitions. [2021-07-13 19:55:05,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-07-13 19:55:05,164 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 [2021-07-13 19:55:05,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:55:05,194 INFO L225 Difference]: With dead ends: 12311 [2021-07-13 19:55:05,194 INFO L226 Difference]: Without dead ends: 12184 [2021-07-13 19:55:05,195 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2045 ImplicationChecksByTransitivity, 1913.7ms TimeCoverageRelationStatistics Valid=586, Invalid=6386, Unknown=0, NotChecked=0, Total=6972 [2021-07-13 19:55:05,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12184 states. [2021-07-13 19:55:05,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12184 to 8828. [2021-07-13 19:55:05,373 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) [2021-07-13 19:55:05,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8828 states to 8828 states and 31459 transitions. [2021-07-13 19:55:05,396 INFO L78 Accepts]: Start accepts. Automaton has 8828 states and 31459 transitions. Word has length 47 [2021-07-13 19:55:05,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:55:05,396 INFO L482 AbstractCegarLoop]: Abstraction has 8828 states and 31459 transitions. [2021-07-13 19:55:05,396 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) [2021-07-13 19:55:05,396 INFO L276 IsEmpty]: Start isEmpty. Operand 8828 states and 31459 transitions. [2021-07-13 19:55:05,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:55:05,412 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:55:05,412 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] [2021-07-13 19:55:05,412 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2021-07-13 19:55:05,412 INFO L430 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:55:05,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:55:05,413 INFO L82 PathProgramCache]: Analyzing trace with hash -372660232, now seen corresponding path program 198 times [2021-07-13 19:55:05,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:55:05,413 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244463016] [2021-07-13 19:55:05,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:55:05,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:55:05,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:55:05,671 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:55:05,671 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244463016] [2021-07-13 19:55:05,671 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244463016] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:55:05,671 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:55:05,671 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:55:05,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988699552] [2021-07-13 19:55:05,671 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:55:05,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:55:05,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:55:05,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:55:05,672 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) [2021-07-13 19:55:08,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:55:08,988 INFO L93 Difference]: Finished difference Result 11360 states and 40284 transitions. [2021-07-13 19:55:08,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-07-13 19:55:08,988 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 [2021-07-13 19:55:08,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:55:09,014 INFO L225 Difference]: With dead ends: 11360 [2021-07-13 19:55:09,014 INFO L226 Difference]: Without dead ends: 11263 [2021-07-13 19:55:09,014 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2059 ImplicationChecksByTransitivity, 2032.1ms TimeCoverageRelationStatistics Valid=585, Invalid=6387, Unknown=0, NotChecked=0, Total=6972 [2021-07-13 19:55:09,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11263 states. [2021-07-13 19:55:09,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11263 to 8846. [2021-07-13 19:55:09,169 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) [2021-07-13 19:55:09,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8846 states to 8846 states and 31504 transitions. [2021-07-13 19:55:09,192 INFO L78 Accepts]: Start accepts. Automaton has 8846 states and 31504 transitions. Word has length 47 [2021-07-13 19:55:09,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:55:09,192 INFO L482 AbstractCegarLoop]: Abstraction has 8846 states and 31504 transitions. [2021-07-13 19:55:09,192 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) [2021-07-13 19:55:09,192 INFO L276 IsEmpty]: Start isEmpty. Operand 8846 states and 31504 transitions. [2021-07-13 19:55:09,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:55:09,207 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:55:09,207 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] [2021-07-13 19:55:09,208 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2021-07-13 19:55:09,208 INFO L430 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:55:09,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:55:09,208 INFO L82 PathProgramCache]: Analyzing trace with hash -369986406, now seen corresponding path program 199 times [2021-07-13 19:55:09,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:55:09,208 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715998829] [2021-07-13 19:55:09,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:55:09,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:55:09,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:55:09,433 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:55:09,433 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715998829] [2021-07-13 19:55:09,433 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715998829] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:55:09,433 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:55:09,433 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:55:09,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937779536] [2021-07-13 19:55:09,433 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:55:09,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:55:09,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:55:09,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:55:09,434 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) [2021-07-13 19:55:12,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:55:12,762 INFO L93 Difference]: Finished difference Result 12189 states and 43128 transitions. [2021-07-13 19:55:12,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-07-13 19:55:12,763 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 [2021-07-13 19:55:12,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:55:12,791 INFO L225 Difference]: With dead ends: 12189 [2021-07-13 19:55:12,791 INFO L226 Difference]: Without dead ends: 12080 [2021-07-13 19:55:12,792 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2368 ImplicationChecksByTransitivity, 1990.4ms TimeCoverageRelationStatistics Valid=648, Invalid=7184, Unknown=0, NotChecked=0, Total=7832 [2021-07-13 19:55:12,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12080 states. [2021-07-13 19:55:12,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12080 to 8828. [2021-07-13 19:55:12,977 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) [2021-07-13 19:55:13,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8828 states to 8828 states and 31455 transitions. [2021-07-13 19:55:13,062 INFO L78 Accepts]: Start accepts. Automaton has 8828 states and 31455 transitions. Word has length 47 [2021-07-13 19:55:13,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:55:13,062 INFO L482 AbstractCegarLoop]: Abstraction has 8828 states and 31455 transitions. [2021-07-13 19:55:13,062 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) [2021-07-13 19:55:13,062 INFO L276 IsEmpty]: Start isEmpty. Operand 8828 states and 31455 transitions. [2021-07-13 19:55:13,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:55:13,077 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:55:13,077 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] [2021-07-13 19:55:13,078 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2021-07-13 19:55:13,078 INFO L430 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:55:13,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:55:13,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1678458078, now seen corresponding path program 200 times [2021-07-13 19:55:13,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:55:13,078 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990947422] [2021-07-13 19:55:13,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:55:13,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:55:13,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:55:13,299 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:55:13,299 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990947422] [2021-07-13 19:55:13,299 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990947422] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:55:13,299 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:55:13,299 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:55:13,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50117991] [2021-07-13 19:55:13,300 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:55:13,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:55:13,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:55:13,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:55:13,300 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) [2021-07-13 19:55:18,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:55:18,757 INFO L93 Difference]: Finished difference Result 13768 states and 48693 transitions. [2021-07-13 19:55:18,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2021-07-13 19:55:18,757 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 [2021-07-13 19:55:18,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:55:18,789 INFO L225 Difference]: With dead ends: 13768 [2021-07-13 19:55:18,789 INFO L226 Difference]: Without dead ends: 13647 [2021-07-13 19:55:18,790 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5965 ImplicationChecksByTransitivity, 3561.4ms TimeCoverageRelationStatistics Valid=1266, Invalid=15504, Unknown=0, NotChecked=0, Total=16770 [2021-07-13 19:55:18,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13647 states. [2021-07-13 19:55:18,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13647 to 8828. [2021-07-13 19:55:18,960 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) [2021-07-13 19:55:18,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8828 states to 8828 states and 31455 transitions. [2021-07-13 19:55:18,981 INFO L78 Accepts]: Start accepts. Automaton has 8828 states and 31455 transitions. Word has length 47 [2021-07-13 19:55:18,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:55:18,981 INFO L482 AbstractCegarLoop]: Abstraction has 8828 states and 31455 transitions. [2021-07-13 19:55:18,981 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) [2021-07-13 19:55:18,981 INFO L276 IsEmpty]: Start isEmpty. Operand 8828 states and 31455 transitions. [2021-07-13 19:55:18,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:55:18,996 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:55:18,996 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] [2021-07-13 19:55:18,996 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2021-07-13 19:55:18,996 INFO L430 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:55:18,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:55:18,996 INFO L82 PathProgramCache]: Analyzing trace with hash -107036642, now seen corresponding path program 201 times [2021-07-13 19:55:18,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:55:18,996 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397769505] [2021-07-13 19:55:18,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:55:18,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:55:19,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:55:19,207 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:55:19,207 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397769505] [2021-07-13 19:55:19,207 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397769505] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:55:19,207 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:55:19,208 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:55:19,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857578598] [2021-07-13 19:55:19,208 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:55:19,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:55:19,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:55:19,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:55:19,208 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) [2021-07-13 19:55:25,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:55:25,997 INFO L93 Difference]: Finished difference Result 16125 states and 57332 transitions. [2021-07-13 19:55:25,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2021-07-13 19:55:25,998 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 [2021-07-13 19:55:25,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:55:26,038 INFO L225 Difference]: With dead ends: 16125 [2021-07-13 19:55:26,038 INFO L226 Difference]: Without dead ends: 15933 [2021-07-13 19:55:26,039 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8957 ImplicationChecksByTransitivity, 4282.7ms TimeCoverageRelationStatistics Valid=1602, Invalid=22268, Unknown=0, NotChecked=0, Total=23870 [2021-07-13 19:55:26,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15933 states. [2021-07-13 19:55:26,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15933 to 8837. [2021-07-13 19:55:26,235 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) [2021-07-13 19:55:26,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8837 states to 8837 states and 31491 transitions. [2021-07-13 19:55:26,257 INFO L78 Accepts]: Start accepts. Automaton has 8837 states and 31491 transitions. Word has length 47 [2021-07-13 19:55:26,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:55:26,257 INFO L482 AbstractCegarLoop]: Abstraction has 8837 states and 31491 transitions. [2021-07-13 19:55:26,257 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) [2021-07-13 19:55:26,257 INFO L276 IsEmpty]: Start isEmpty. Operand 8837 states and 31491 transitions. [2021-07-13 19:55:26,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:55:26,273 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:55:26,273 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] [2021-07-13 19:55:26,274 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2021-07-13 19:55:26,274 INFO L430 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:55:26,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:55:26,274 INFO L82 PathProgramCache]: Analyzing trace with hash 191855036, now seen corresponding path program 202 times [2021-07-13 19:55:26,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:55:26,274 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594412759] [2021-07-13 19:55:26,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:55:26,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:55:26,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:55:26,507 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:55:26,507 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594412759] [2021-07-13 19:55:26,507 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594412759] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:55:26,507 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:55:26,507 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:55:26,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495617394] [2021-07-13 19:55:26,507 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:55:26,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:55:26,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:55:26,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:55:26,508 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) [2021-07-13 19:55:30,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:55:30,679 INFO L93 Difference]: Finished difference Result 12966 states and 45709 transitions. [2021-07-13 19:55:30,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-07-13 19:55:30,679 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 [2021-07-13 19:55:30,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:55:30,710 INFO L225 Difference]: With dead ends: 12966 [2021-07-13 19:55:30,710 INFO L226 Difference]: Without dead ends: 12869 [2021-07-13 19:55:30,711 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3663 ImplicationChecksByTransitivity, 2579.7ms TimeCoverageRelationStatistics Valid=847, Invalid=10283, Unknown=0, NotChecked=0, Total=11130 [2021-07-13 19:55:30,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12869 states. [2021-07-13 19:55:30,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12869 to 8845. [2021-07-13 19:55:30,882 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) [2021-07-13 19:55:30,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8845 states to 8845 states and 31509 transitions. [2021-07-13 19:55:30,904 INFO L78 Accepts]: Start accepts. Automaton has 8845 states and 31509 transitions. Word has length 47 [2021-07-13 19:55:30,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:55:30,905 INFO L482 AbstractCegarLoop]: Abstraction has 8845 states and 31509 transitions. [2021-07-13 19:55:30,905 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) [2021-07-13 19:55:30,905 INFO L276 IsEmpty]: Start isEmpty. Operand 8845 states and 31509 transitions. [2021-07-13 19:55:30,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:55:30,920 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:55:30,920 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] [2021-07-13 19:55:30,920 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2021-07-13 19:55:30,920 INFO L430 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:55:30,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:55:30,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1533565474, now seen corresponding path program 203 times [2021-07-13 19:55:30,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:55:30,920 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361447332] [2021-07-13 19:55:30,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:55:30,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:55:31,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:55:31,139 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:55:31,139 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361447332] [2021-07-13 19:55:31,139 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361447332] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:55:31,139 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:55:31,139 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:55:31,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157293317] [2021-07-13 19:55:31,139 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:55:31,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:55:31,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:55:31,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:55:31,140 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) [2021-07-13 19:55:35,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:55:35,767 INFO L93 Difference]: Finished difference Result 13193 states and 46752 transitions. [2021-07-13 19:55:35,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2021-07-13 19:55:35,767 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 [2021-07-13 19:55:35,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:55:35,799 INFO L225 Difference]: With dead ends: 13193 [2021-07-13 19:55:35,799 INFO L226 Difference]: Without dead ends: 13090 [2021-07-13 19:55:35,800 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4591 ImplicationChecksByTransitivity, 2940.9ms TimeCoverageRelationStatistics Valid=1091, Invalid=12481, Unknown=0, NotChecked=0, Total=13572 [2021-07-13 19:55:35,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13090 states. [2021-07-13 19:55:35,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13090 to 8833. [2021-07-13 19:55:35,967 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) [2021-07-13 19:55:35,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8833 states to 8833 states and 31483 transitions. [2021-07-13 19:55:35,989 INFO L78 Accepts]: Start accepts. Automaton has 8833 states and 31483 transitions. Word has length 47 [2021-07-13 19:55:35,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:55:35,989 INFO L482 AbstractCegarLoop]: Abstraction has 8833 states and 31483 transitions. [2021-07-13 19:55:35,989 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) [2021-07-13 19:55:35,989 INFO L276 IsEmpty]: Start isEmpty. Operand 8833 states and 31483 transitions. [2021-07-13 19:55:36,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:55:36,005 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:55:36,005 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] [2021-07-13 19:55:36,005 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2021-07-13 19:55:36,005 INFO L430 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:55:36,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:55:36,005 INFO L82 PathProgramCache]: Analyzing trace with hash -279872324, now seen corresponding path program 204 times [2021-07-13 19:55:36,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:55:36,005 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452396800] [2021-07-13 19:55:36,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:55:36,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:55:36,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:55:36,254 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:55:36,254 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452396800] [2021-07-13 19:55:36,254 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452396800] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:55:36,254 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:55:36,254 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:55:36,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585073986] [2021-07-13 19:55:36,254 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:55:36,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:55:36,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:55:36,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:55:36,254 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) [2021-07-13 19:55:39,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:55:39,499 INFO L93 Difference]: Finished difference Result 12744 states and 45096 transitions. [2021-07-13 19:55:39,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-07-13 19:55:39,499 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 [2021-07-13 19:55:39,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:55:39,530 INFO L225 Difference]: With dead ends: 12744 [2021-07-13 19:55:39,530 INFO L226 Difference]: Without dead ends: 12644 [2021-07-13 19:55:39,530 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1822 ImplicationChecksByTransitivity, 1856.3ms TimeCoverageRelationStatistics Valid=534, Invalid=5786, Unknown=0, NotChecked=0, Total=6320 [2021-07-13 19:55:39,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12644 states. [2021-07-13 19:55:39,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12644 to 8842. [2021-07-13 19:55:39,695 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) [2021-07-13 19:55:39,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8842 states to 8842 states and 31505 transitions. [2021-07-13 19:55:39,717 INFO L78 Accepts]: Start accepts. Automaton has 8842 states and 31505 transitions. Word has length 47 [2021-07-13 19:55:39,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:55:39,717 INFO L482 AbstractCegarLoop]: Abstraction has 8842 states and 31505 transitions. [2021-07-13 19:55:39,717 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) [2021-07-13 19:55:39,717 INFO L276 IsEmpty]: Start isEmpty. Operand 8842 states and 31505 transitions. [2021-07-13 19:55:39,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:55:39,732 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:55:39,732 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] [2021-07-13 19:55:39,732 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2021-07-13 19:55:39,733 INFO L430 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:55:39,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:55:39,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1714939814, now seen corresponding path program 205 times [2021-07-13 19:55:39,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:55:39,733 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994840343] [2021-07-13 19:55:39,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:55:39,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:55:39,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:55:39,949 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:55:39,949 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994840343] [2021-07-13 19:55:39,949 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994840343] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:55:39,949 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:55:39,949 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:55:39,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016123516] [2021-07-13 19:55:39,950 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:55:39,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:55:39,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:55:39,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:55:39,950 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) [2021-07-13 19:55:42,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:55:42,822 INFO L93 Difference]: Finished difference Result 11532 states and 40861 transitions. [2021-07-13 19:55:42,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-07-13 19:55:42,823 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 [2021-07-13 19:55:42,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:55:42,849 INFO L225 Difference]: With dead ends: 11532 [2021-07-13 19:55:42,849 INFO L226 Difference]: Without dead ends: 11414 [2021-07-13 19:55:42,850 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1531 ImplicationChecksByTransitivity, 1523.1ms TimeCoverageRelationStatistics Valid=482, Invalid=5068, Unknown=0, NotChecked=0, Total=5550 [2021-07-13 19:55:42,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11414 states. [2021-07-13 19:55:43,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11414 to 8842. [2021-07-13 19:55:43,014 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) [2021-07-13 19:55:43,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8842 states to 8842 states and 31499 transitions. [2021-07-13 19:55:43,037 INFO L78 Accepts]: Start accepts. Automaton has 8842 states and 31499 transitions. Word has length 47 [2021-07-13 19:55:43,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:55:43,038 INFO L482 AbstractCegarLoop]: Abstraction has 8842 states and 31499 transitions. [2021-07-13 19:55:43,038 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) [2021-07-13 19:55:43,038 INFO L276 IsEmpty]: Start isEmpty. Operand 8842 states and 31499 transitions. [2021-07-13 19:55:43,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:55:43,053 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:55:43,053 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] [2021-07-13 19:55:43,053 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2021-07-13 19:55:43,054 INFO L430 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:55:43,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:55:43,054 INFO L82 PathProgramCache]: Analyzing trace with hash 771909014, now seen corresponding path program 206 times [2021-07-13 19:55:43,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:55:43,054 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715626664] [2021-07-13 19:55:43,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:55:43,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:55:43,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:55:43,283 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:55:43,283 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715626664] [2021-07-13 19:55:43,283 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715626664] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:55:43,283 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:55:43,283 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:55:43,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299603863] [2021-07-13 19:55:43,284 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:55:43,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:55:43,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:55:43,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:55:43,284 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) [2021-07-13 19:55:46,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:55:46,457 INFO L93 Difference]: Finished difference Result 11390 states and 40435 transitions. [2021-07-13 19:55:46,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-07-13 19:55:46,458 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 [2021-07-13 19:55:46,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:55:46,485 INFO L225 Difference]: With dead ends: 11390 [2021-07-13 19:55:46,486 INFO L226 Difference]: Without dead ends: 11293 [2021-07-13 19:55:46,486 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1873 ImplicationChecksByTransitivity, 1789.0ms TimeCoverageRelationStatistics Valid=543, Invalid=5937, Unknown=0, NotChecked=0, Total=6480 [2021-07-13 19:55:46,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11293 states. [2021-07-13 19:55:46,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11293 to 8848. [2021-07-13 19:55:46,649 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) [2021-07-13 19:55:46,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8848 states to 8848 states and 31514 transitions. [2021-07-13 19:55:46,672 INFO L78 Accepts]: Start accepts. Automaton has 8848 states and 31514 transitions. Word has length 47 [2021-07-13 19:55:46,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:55:46,672 INFO L482 AbstractCegarLoop]: Abstraction has 8848 states and 31514 transitions. [2021-07-13 19:55:46,672 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) [2021-07-13 19:55:46,672 INFO L276 IsEmpty]: Start isEmpty. Operand 8848 states and 31514 transitions. [2021-07-13 19:55:46,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:55:46,688 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:55:46,688 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] [2021-07-13 19:55:46,688 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2021-07-13 19:55:46,688 INFO L430 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:55:46,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:55:46,688 INFO L82 PathProgramCache]: Analyzing trace with hash 774582840, now seen corresponding path program 207 times [2021-07-13 19:55:46,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:55:46,688 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235485278] [2021-07-13 19:55:46,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:55:46,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:55:46,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:55:46,913 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:55:46,913 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235485278] [2021-07-13 19:55:46,913 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235485278] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:55:46,913 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:55:46,913 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:55:46,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221955633] [2021-07-13 19:55:46,913 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:55:46,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:55:46,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:55:46,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:55:46,914 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) [2021-07-13 19:55:49,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:55:49,567 INFO L93 Difference]: Finished difference Result 10683 states and 37856 transitions. [2021-07-13 19:55:49,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-07-13 19:55:49,567 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 [2021-07-13 19:55:49,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:55:49,593 INFO L225 Difference]: With dead ends: 10683 [2021-07-13 19:55:49,593 INFO L226 Difference]: Without dead ends: 10574 [2021-07-13 19:55:49,594 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1315 ImplicationChecksByTransitivity, 1496.7ms TimeCoverageRelationStatistics Valid=456, Invalid=4514, Unknown=0, NotChecked=0, Total=4970 [2021-07-13 19:55:49,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10574 states. [2021-07-13 19:55:49,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10574 to 8830. [2021-07-13 19:55:49,744 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) [2021-07-13 19:55:49,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8830 states to 8830 states and 31463 transitions. [2021-07-13 19:55:49,767 INFO L78 Accepts]: Start accepts. Automaton has 8830 states and 31463 transitions. Word has length 47 [2021-07-13 19:55:49,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:55:49,767 INFO L482 AbstractCegarLoop]: Abstraction has 8830 states and 31463 transitions. [2021-07-13 19:55:49,767 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) [2021-07-13 19:55:49,767 INFO L276 IsEmpty]: Start isEmpty. Operand 8830 states and 31463 transitions. [2021-07-13 19:55:49,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:55:49,782 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:55:49,783 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] [2021-07-13 19:55:49,783 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2021-07-13 19:55:49,783 INFO L430 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:55:49,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:55:49,783 INFO L82 PathProgramCache]: Analyzing trace with hash -482580522, now seen corresponding path program 208 times [2021-07-13 19:55:49,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:55:49,783 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029700989] [2021-07-13 19:55:49,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:55:49,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:55:50,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:55:50,012 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:55:50,012 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029700989] [2021-07-13 19:55:50,012 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029700989] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:55:50,012 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:55:50,012 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:55:50,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999652580] [2021-07-13 19:55:50,012 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:55:50,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:55:50,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:55:50,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:55:50,012 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) [2021-07-13 19:55:53,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:55:53,174 INFO L93 Difference]: Finished difference Result 12830 states and 45389 transitions. [2021-07-13 19:55:53,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-07-13 19:55:53,174 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 [2021-07-13 19:55:53,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:55:53,206 INFO L225 Difference]: With dead ends: 12830 [2021-07-13 19:55:53,206 INFO L226 Difference]: Without dead ends: 12730 [2021-07-13 19:55:53,207 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1641 ImplicationChecksByTransitivity, 1726.7ms TimeCoverageRelationStatistics Valid=506, Invalid=5194, Unknown=0, NotChecked=0, Total=5700 [2021-07-13 19:55:53,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12730 states. [2021-07-13 19:55:53,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12730 to 8833. [2021-07-13 19:55:53,375 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) [2021-07-13 19:55:53,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8833 states to 8833 states and 31475 transitions. [2021-07-13 19:55:53,398 INFO L78 Accepts]: Start accepts. Automaton has 8833 states and 31475 transitions. Word has length 47 [2021-07-13 19:55:53,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:55:53,398 INFO L482 AbstractCegarLoop]: Abstraction has 8833 states and 31475 transitions. [2021-07-13 19:55:53,398 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) [2021-07-13 19:55:53,398 INFO L276 IsEmpty]: Start isEmpty. Operand 8833 states and 31475 transitions. [2021-07-13 19:55:53,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:55:53,413 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:55:53,414 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] [2021-07-13 19:55:53,414 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2021-07-13 19:55:53,414 INFO L430 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:55:53,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:55:53,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1892548664, now seen corresponding path program 209 times [2021-07-13 19:55:53,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:55:53,414 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512298513] [2021-07-13 19:55:53,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:55:53,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:55:53,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:55:53,620 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:55:53,620 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512298513] [2021-07-13 19:55:53,620 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512298513] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:55:53,620 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:55:53,620 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:55:53,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339223548] [2021-07-13 19:55:53,621 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:55:53,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:55:53,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:55:53,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:55:53,621 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) [2021-07-13 19:55:56,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:55:56,492 INFO L93 Difference]: Finished difference Result 11794 states and 41896 transitions. [2021-07-13 19:55:56,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-07-13 19:55:56,493 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 [2021-07-13 19:55:56,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:55:56,520 INFO L225 Difference]: With dead ends: 11794 [2021-07-13 19:55:56,520 INFO L226 Difference]: Without dead ends: 11688 [2021-07-13 19:55:56,520 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1807 ImplicationChecksByTransitivity, 1621.0ms TimeCoverageRelationStatistics Valid=528, Invalid=5634, Unknown=0, NotChecked=0, Total=6162 [2021-07-13 19:55:56,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11688 states. [2021-07-13 19:55:56,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11688 to 8836. [2021-07-13 19:55:56,684 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) [2021-07-13 19:55:56,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8836 states to 8836 states and 31484 transitions. [2021-07-13 19:55:56,707 INFO L78 Accepts]: Start accepts. Automaton has 8836 states and 31484 transitions. Word has length 47 [2021-07-13 19:55:56,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:55:56,707 INFO L482 AbstractCegarLoop]: Abstraction has 8836 states and 31484 transitions. [2021-07-13 19:55:56,707 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) [2021-07-13 19:55:56,707 INFO L276 IsEmpty]: Start isEmpty. Operand 8836 states and 31484 transitions. [2021-07-13 19:55:56,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:55:56,722 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:55:56,722 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] [2021-07-13 19:55:56,722 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2021-07-13 19:55:56,722 INFO L430 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:55:56,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:55:56,722 INFO L82 PathProgramCache]: Analyzing trace with hash 2086966264, now seen corresponding path program 210 times [2021-07-13 19:55:56,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:55:56,722 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74870472] [2021-07-13 19:55:56,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:55:56,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:55:56,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:55:56,985 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:55:56,985 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74870472] [2021-07-13 19:55:56,985 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74870472] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:55:56,985 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:55:56,985 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:55:56,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825376192] [2021-07-13 19:55:56,985 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:55:56,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:55:56,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:55:56,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:55:56,986 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) [2021-07-13 19:56:00,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:56:00,134 INFO L93 Difference]: Finished difference Result 13289 states and 47160 transitions. [2021-07-13 19:56:00,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-07-13 19:56:00,134 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 [2021-07-13 19:56:00,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:56:00,167 INFO L225 Difference]: With dead ends: 13289 [2021-07-13 19:56:00,167 INFO L226 Difference]: Without dead ends: 13189 [2021-07-13 19:56:00,168 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1938 ImplicationChecksByTransitivity, 1808.1ms TimeCoverageRelationStatistics Valid=555, Invalid=6087, Unknown=0, NotChecked=0, Total=6642 [2021-07-13 19:56:00,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13189 states. [2021-07-13 19:56:00,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13189 to 8836. [2021-07-13 19:56:00,356 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) [2021-07-13 19:56:00,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8836 states to 8836 states and 31484 transitions. [2021-07-13 19:56:00,377 INFO L78 Accepts]: Start accepts. Automaton has 8836 states and 31484 transitions. Word has length 47 [2021-07-13 19:56:00,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:56:00,378 INFO L482 AbstractCegarLoop]: Abstraction has 8836 states and 31484 transitions. [2021-07-13 19:56:00,378 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) [2021-07-13 19:56:00,378 INFO L276 IsEmpty]: Start isEmpty. Operand 8836 states and 31484 transitions. [2021-07-13 19:56:00,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:56:00,392 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:56:00,392 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] [2021-07-13 19:56:00,392 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2021-07-13 19:56:00,392 INFO L430 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:56:00,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:56:00,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1544083320, now seen corresponding path program 211 times [2021-07-13 19:56:00,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:56:00,393 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991804192] [2021-07-13 19:56:00,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:56:00,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:56:00,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:56:00,609 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:56:00,609 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991804192] [2021-07-13 19:56:00,609 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991804192] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:56:00,609 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:56:00,609 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:56:00,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938301651] [2021-07-13 19:56:00,609 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:56:00,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:56:00,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:56:00,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:56:00,610 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) [2021-07-13 19:56:03,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:56:03,446 INFO L93 Difference]: Finished difference Result 12138 states and 43268 transitions. [2021-07-13 19:56:03,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-07-13 19:56:03,446 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 [2021-07-13 19:56:03,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:56:03,511 INFO L225 Difference]: With dead ends: 12138 [2021-07-13 19:56:03,512 INFO L226 Difference]: Without dead ends: 12038 [2021-07-13 19:56:03,512 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1694 ImplicationChecksByTransitivity, 1565.6ms TimeCoverageRelationStatistics Valid=511, Invalid=5495, Unknown=0, NotChecked=0, Total=6006 [2021-07-13 19:56:03,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12038 states. [2021-07-13 19:56:03,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12038 to 8836. [2021-07-13 19:56:03,662 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) [2021-07-13 19:56:03,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8836 states to 8836 states and 31481 transitions. [2021-07-13 19:56:03,684 INFO L78 Accepts]: Start accepts. Automaton has 8836 states and 31481 transitions. Word has length 47 [2021-07-13 19:56:03,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:56:03,685 INFO L482 AbstractCegarLoop]: Abstraction has 8836 states and 31481 transitions. [2021-07-13 19:56:03,685 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) [2021-07-13 19:56:03,685 INFO L276 IsEmpty]: Start isEmpty. Operand 8836 states and 31481 transitions. [2021-07-13 19:56:03,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:56:03,700 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:56:03,700 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] [2021-07-13 19:56:03,700 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2021-07-13 19:56:03,700 INFO L430 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:56:03,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:56:03,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1826486106, now seen corresponding path program 212 times [2021-07-13 19:56:03,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:56:03,700 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645113085] [2021-07-13 19:56:03,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:56:03,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:56:03,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:56:03,914 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:56:03,914 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645113085] [2021-07-13 19:56:03,914 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645113085] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:56:03,914 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:56:03,914 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:56:03,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76348410] [2021-07-13 19:56:03,914 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:56:03,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:56:03,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:56:03,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:56:03,915 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) [2021-07-13 19:56:07,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:56:07,178 INFO L93 Difference]: Finished difference Result 12247 states and 43654 transitions. [2021-07-13 19:56:07,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-07-13 19:56:07,178 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 [2021-07-13 19:56:07,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:56:07,209 INFO L225 Difference]: With dead ends: 12247 [2021-07-13 19:56:07,209 INFO L226 Difference]: Without dead ends: 12150 [2021-07-13 19:56:07,210 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2121 ImplicationChecksByTransitivity, 1796.3ms TimeCoverageRelationStatistics Valid=577, Invalid=6563, Unknown=0, NotChecked=0, Total=7140 [2021-07-13 19:56:07,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12150 states. [2021-07-13 19:56:07,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12150 to 8842. [2021-07-13 19:56:07,381 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) [2021-07-13 19:56:07,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8842 states to 8842 states and 31496 transitions. [2021-07-13 19:56:07,403 INFO L78 Accepts]: Start accepts. Automaton has 8842 states and 31496 transitions. Word has length 47 [2021-07-13 19:56:07,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:56:07,403 INFO L482 AbstractCegarLoop]: Abstraction has 8842 states and 31496 transitions. [2021-07-13 19:56:07,403 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) [2021-07-13 19:56:07,403 INFO L276 IsEmpty]: Start isEmpty. Operand 8842 states and 31496 transitions. [2021-07-13 19:56:07,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:56:07,418 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:56:07,418 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] [2021-07-13 19:56:07,418 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2021-07-13 19:56:07,418 INFO L430 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:56:07,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:56:07,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1909374712, now seen corresponding path program 213 times [2021-07-13 19:56:07,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:56:07,419 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484122669] [2021-07-13 19:56:07,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:56:07,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:56:07,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:56:07,688 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:56:07,688 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484122669] [2021-07-13 19:56:07,688 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484122669] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:56:07,688 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:56:07,688 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:56:07,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825463786] [2021-07-13 19:56:07,688 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:56:07,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:56:07,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:56:07,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:56:07,689 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) [2021-07-13 19:56:10,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:56:10,438 INFO L93 Difference]: Finished difference Result 11540 states and 41075 transitions. [2021-07-13 19:56:10,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-07-13 19:56:10,438 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 [2021-07-13 19:56:10,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:56:10,463 INFO L225 Difference]: With dead ends: 11540 [2021-07-13 19:56:10,464 INFO L226 Difference]: Without dead ends: 11434 [2021-07-13 19:56:10,464 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1474 ImplicationChecksByTransitivity, 1532.5ms TimeCoverageRelationStatistics Valid=476, Invalid=4926, Unknown=0, NotChecked=0, Total=5402 [2021-07-13 19:56:10,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11434 states. [2021-07-13 19:56:10,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11434 to 8827. [2021-07-13 19:56:10,617 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) [2021-07-13 19:56:10,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8827 states to 8827 states and 31461 transitions. [2021-07-13 19:56:10,639 INFO L78 Accepts]: Start accepts. Automaton has 8827 states and 31461 transitions. Word has length 47 [2021-07-13 19:56:10,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:56:10,639 INFO L482 AbstractCegarLoop]: Abstraction has 8827 states and 31461 transitions. [2021-07-13 19:56:10,639 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) [2021-07-13 19:56:10,639 INFO L276 IsEmpty]: Start isEmpty. Operand 8827 states and 31461 transitions. [2021-07-13 19:56:10,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:56:10,653 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:56:10,654 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] [2021-07-13 19:56:10,654 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2021-07-13 19:56:10,654 INFO L430 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:56:10,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:56:10,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1446911198, now seen corresponding path program 214 times [2021-07-13 19:56:10,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:56:10,654 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793686267] [2021-07-13 19:56:10,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:56:10,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:56:10,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:56:10,866 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:56:10,866 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793686267] [2021-07-13 19:56:10,866 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793686267] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:56:10,866 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:56:10,866 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:56:10,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835906920] [2021-07-13 19:56:10,867 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:56:10,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:56:10,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:56:10,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:56:10,867 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) [2021-07-13 19:56:17,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:56:17,803 INFO L93 Difference]: Finished difference Result 21470 states and 75784 transitions. [2021-07-13 19:56:17,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2021-07-13 19:56:17,803 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 [2021-07-13 19:56:17,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:56:17,855 INFO L225 Difference]: With dead ends: 21470 [2021-07-13 19:56:17,855 INFO L226 Difference]: Without dead ends: 20925 [2021-07-13 19:56:17,857 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11174 ImplicationChecksByTransitivity, 4421.2ms TimeCoverageRelationStatistics Valid=1872, Invalid=26858, Unknown=0, NotChecked=0, Total=28730 [2021-07-13 19:56:17,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20925 states. [2021-07-13 19:56:18,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20925 to 9629. [2021-07-13 19:56:18,116 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) [2021-07-13 19:56:18,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9629 states to 9629 states and 34456 transitions. [2021-07-13 19:56:18,141 INFO L78 Accepts]: Start accepts. Automaton has 9629 states and 34456 transitions. Word has length 47 [2021-07-13 19:56:18,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:56:18,141 INFO L482 AbstractCegarLoop]: Abstraction has 9629 states and 34456 transitions. [2021-07-13 19:56:18,141 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) [2021-07-13 19:56:18,141 INFO L276 IsEmpty]: Start isEmpty. Operand 9629 states and 34456 transitions. [2021-07-13 19:56:18,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:56:18,157 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:56:18,157 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] [2021-07-13 19:56:18,158 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2021-07-13 19:56:18,158 INFO L430 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:56:18,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:56:18,158 INFO L82 PathProgramCache]: Analyzing trace with hash 735434624, now seen corresponding path program 215 times [2021-07-13 19:56:18,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:56:18,158 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125252984] [2021-07-13 19:56:18,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:56:18,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:56:18,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:56:18,428 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:56:18,428 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125252984] [2021-07-13 19:56:18,428 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125252984] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:56:18,428 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:56:18,428 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:56:18,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818765944] [2021-07-13 19:56:18,428 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:56:18,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:56:18,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:56:18,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:56:18,429 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) [2021-07-13 19:56:25,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:56:25,602 INFO L93 Difference]: Finished difference Result 21062 states and 74515 transitions. [2021-07-13 19:56:25,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2021-07-13 19:56:25,602 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 [2021-07-13 19:56:25,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:56:25,651 INFO L225 Difference]: With dead ends: 21062 [2021-07-13 19:56:25,651 INFO L226 Difference]: Without dead ends: 20574 [2021-07-13 19:56:25,652 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11784 ImplicationChecksByTransitivity, 4625.9ms TimeCoverageRelationStatistics Valid=1970, Invalid=28132, Unknown=0, NotChecked=0, Total=30102 [2021-07-13 19:56:25,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20574 states. [2021-07-13 19:56:25,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20574 to 10092. [2021-07-13 19:56:25,900 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) [2021-07-13 19:56:25,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10092 states to 10092 states and 36177 transitions. [2021-07-13 19:56:25,925 INFO L78 Accepts]: Start accepts. Automaton has 10092 states and 36177 transitions. Word has length 47 [2021-07-13 19:56:25,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:56:25,926 INFO L482 AbstractCegarLoop]: Abstraction has 10092 states and 36177 transitions. [2021-07-13 19:56:25,926 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) [2021-07-13 19:56:25,926 INFO L276 IsEmpty]: Start isEmpty. Operand 10092 states and 36177 transitions. [2021-07-13 19:56:25,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:56:25,943 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:56:25,943 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] [2021-07-13 19:56:25,943 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2021-07-13 19:56:25,943 INFO L430 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:56:25,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:56:25,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1280726080, now seen corresponding path program 216 times [2021-07-13 19:56:25,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:56:25,943 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174373394] [2021-07-13 19:56:25,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:56:25,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:56:26,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:56:26,158 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:56:26,158 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174373394] [2021-07-13 19:56:26,158 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174373394] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:56:26,158 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:56:26,158 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:56:26,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314077662] [2021-07-13 19:56:26,158 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:56:26,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:56:26,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:56:26,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:56:26,158 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) [2021-07-13 19:56:33,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:56:33,570 INFO L93 Difference]: Finished difference Result 22066 states and 78190 transitions. [2021-07-13 19:56:33,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2021-07-13 19:56:33,570 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 [2021-07-13 19:56:33,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:56:33,625 INFO L225 Difference]: With dead ends: 22066 [2021-07-13 19:56:33,625 INFO L226 Difference]: Without dead ends: 21548 [2021-07-13 19:56:33,626 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10007 ImplicationChecksByTransitivity, 4775.3ms TimeCoverageRelationStatistics Valid=1698, Invalid=24384, Unknown=0, NotChecked=0, Total=26082 [2021-07-13 19:56:33,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21548 states. [2021-07-13 19:56:33,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21548 to 10307. [2021-07-13 19:56:33,999 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) [2021-07-13 19:56:34,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10307 states to 10307 states and 36957 transitions. [2021-07-13 19:56:34,024 INFO L78 Accepts]: Start accepts. Automaton has 10307 states and 36957 transitions. Word has length 47 [2021-07-13 19:56:34,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:56:34,024 INFO L482 AbstractCegarLoop]: Abstraction has 10307 states and 36957 transitions. [2021-07-13 19:56:34,024 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) [2021-07-13 19:56:34,024 INFO L276 IsEmpty]: Start isEmpty. Operand 10307 states and 36957 transitions. [2021-07-13 19:56:34,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:56:34,041 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:56:34,041 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] [2021-07-13 19:56:34,041 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2021-07-13 19:56:34,041 INFO L430 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:56:34,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:56:34,041 INFO L82 PathProgramCache]: Analyzing trace with hash -28463940, now seen corresponding path program 217 times [2021-07-13 19:56:34,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:56:34,042 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38212055] [2021-07-13 19:56:34,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:56:34,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:56:34,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:56:34,304 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:56:34,304 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38212055] [2021-07-13 19:56:34,304 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38212055] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:56:34,304 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:56:34,304 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:56:34,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126498528] [2021-07-13 19:56:34,305 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:56:34,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:56:34,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:56:34,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:56:34,305 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) [2021-07-13 19:56:40,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:56:40,418 INFO L93 Difference]: Finished difference Result 21218 states and 75598 transitions. [2021-07-13 19:56:40,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2021-07-13 19:56:40,419 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 [2021-07-13 19:56:40,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:56:40,469 INFO L225 Difference]: With dead ends: 21218 [2021-07-13 19:56:40,469 INFO L226 Difference]: Without dead ends: 20996 [2021-07-13 19:56:40,471 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7869 ImplicationChecksByTransitivity, 4007.2ms TimeCoverageRelationStatistics Valid=1464, Invalid=19706, Unknown=0, NotChecked=0, Total=21170 [2021-07-13 19:56:40,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20996 states. [2021-07-13 19:56:40,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20996 to 10857. [2021-07-13 19:56:40,770 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) [2021-07-13 19:56:40,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10857 states to 10857 states and 38991 transitions. [2021-07-13 19:56:40,797 INFO L78 Accepts]: Start accepts. Automaton has 10857 states and 38991 transitions. Word has length 47 [2021-07-13 19:56:40,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:56:40,797 INFO L482 AbstractCegarLoop]: Abstraction has 10857 states and 38991 transitions. [2021-07-13 19:56:40,797 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) [2021-07-13 19:56:40,797 INFO L276 IsEmpty]: Start isEmpty. Operand 10857 states and 38991 transitions. [2021-07-13 19:56:40,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:56:40,815 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:56:40,815 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] [2021-07-13 19:56:40,815 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2021-07-13 19:56:40,815 INFO L430 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:56:40,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:56:40,816 INFO L82 PathProgramCache]: Analyzing trace with hash -94526498, now seen corresponding path program 218 times [2021-07-13 19:56:40,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:56:40,816 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850612183] [2021-07-13 19:56:40,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:56:40,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:56:41,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:56:41,028 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:56:41,028 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850612183] [2021-07-13 19:56:41,028 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850612183] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:56:41,028 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:56:41,029 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:56:41,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701569025] [2021-07-13 19:56:41,029 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:56:41,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:56:41,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:56:41,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:56:41,029 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) [2021-07-13 19:56:47,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:56:47,169 INFO L93 Difference]: Finished difference Result 22737 states and 81208 transitions. [2021-07-13 19:56:47,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2021-07-13 19:56:47,169 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 [2021-07-13 19:56:47,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:56:47,291 INFO L225 Difference]: With dead ends: 22737 [2021-07-13 19:56:47,291 INFO L226 Difference]: Without dead ends: 22467 [2021-07-13 19:56:47,292 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9190 ImplicationChecksByTransitivity, 3888.3ms TimeCoverageRelationStatistics Valid=1568, Invalid=22612, Unknown=0, NotChecked=0, Total=24180 [2021-07-13 19:56:47,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22467 states. [2021-07-13 19:56:47,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22467 to 10976. [2021-07-13 19:56:47,564 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) [2021-07-13 19:56:47,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10976 states to 10976 states and 39406 transitions. [2021-07-13 19:56:47,593 INFO L78 Accepts]: Start accepts. Automaton has 10976 states and 39406 transitions. Word has length 47 [2021-07-13 19:56:47,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:56:47,594 INFO L482 AbstractCegarLoop]: Abstraction has 10976 states and 39406 transitions. [2021-07-13 19:56:47,594 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) [2021-07-13 19:56:47,594 INFO L276 IsEmpty]: Start isEmpty. Operand 10976 states and 39406 transitions. [2021-07-13 19:56:47,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:56:47,613 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:56:47,613 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] [2021-07-13 19:56:47,613 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2021-07-13 19:56:47,613 INFO L430 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:56:47,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:56:47,613 INFO L82 PathProgramCache]: Analyzing trace with hash -239209186, now seen corresponding path program 219 times [2021-07-13 19:56:47,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:56:47,614 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435677232] [2021-07-13 19:56:47,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:56:47,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:56:47,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:56:47,829 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:56:47,829 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435677232] [2021-07-13 19:56:47,829 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435677232] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:56:47,829 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:56:47,829 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:56:47,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780574541] [2021-07-13 19:56:47,829 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:56:47,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:56:47,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:56:47,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:56:47,830 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) [2021-07-13 19:56:55,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:56:55,504 INFO L93 Difference]: Finished difference Result 22963 states and 81306 transitions. [2021-07-13 19:56:55,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2021-07-13 19:56:55,504 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 [2021-07-13 19:56:55,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:56:55,561 INFO L225 Difference]: With dead ends: 22963 [2021-07-13 19:56:55,562 INFO L226 Difference]: Without dead ends: 22717 [2021-07-13 19:56:55,563 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12973 ImplicationChecksByTransitivity, 4938.9ms TimeCoverageRelationStatistics Valid=1984, Invalid=30958, Unknown=0, NotChecked=0, Total=32942 [2021-07-13 19:56:55,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22717 states. [2021-07-13 19:56:55,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22717 to 11160. [2021-07-13 19:56:55,884 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) [2021-07-13 19:56:55,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11160 states to 11160 states and 40103 transitions. [2021-07-13 19:56:55,914 INFO L78 Accepts]: Start accepts. Automaton has 11160 states and 40103 transitions. Word has length 47 [2021-07-13 19:56:55,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:56:55,914 INFO L482 AbstractCegarLoop]: Abstraction has 11160 states and 40103 transitions. [2021-07-13 19:56:55,914 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) [2021-07-13 19:56:55,914 INFO L276 IsEmpty]: Start isEmpty. Operand 11160 states and 40103 transitions. [2021-07-13 19:56:55,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:56:55,934 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:56:55,934 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] [2021-07-13 19:56:55,934 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2021-07-13 19:56:55,934 INFO L430 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:56:55,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:56:55,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1792754108, now seen corresponding path program 220 times [2021-07-13 19:56:55,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:56:55,935 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047971947] [2021-07-13 19:56:55,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:56:55,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:56:56,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:56:56,162 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:56:56,162 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047971947] [2021-07-13 19:56:56,162 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047971947] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:56:56,162 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:56:56,162 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:56:56,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702715217] [2021-07-13 19:56:56,162 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:56:56,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:56:56,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:56:56,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:56:56,163 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) [2021-07-13 19:57:03,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:57:03,583 INFO L93 Difference]: Finished difference Result 22773 states and 81052 transitions. [2021-07-13 19:57:03,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2021-07-13 19:57:03,583 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 [2021-07-13 19:57:03,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:57:03,675 INFO L225 Difference]: With dead ends: 22773 [2021-07-13 19:57:03,675 INFO L226 Difference]: Without dead ends: 22676 [2021-07-13 19:57:03,676 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11392 ImplicationChecksByTransitivity, 4639.1ms TimeCoverageRelationStatistics Valid=1905, Invalid=27507, Unknown=0, NotChecked=0, Total=29412 [2021-07-13 19:57:03,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22676 states. [2021-07-13 19:57:03,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22676 to 11209. [2021-07-13 19:57:03,982 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) [2021-07-13 19:57:04,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11209 states to 11209 states and 40264 transitions. [2021-07-13 19:57:04,009 INFO L78 Accepts]: Start accepts. Automaton has 11209 states and 40264 transitions. Word has length 47 [2021-07-13 19:57:04,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:57:04,009 INFO L482 AbstractCegarLoop]: Abstraction has 11209 states and 40264 transitions. [2021-07-13 19:57:04,009 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) [2021-07-13 19:57:04,009 INFO L276 IsEmpty]: Start isEmpty. Operand 11209 states and 40264 transitions. [2021-07-13 19:57:04,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:57:04,027 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:57:04,027 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] [2021-07-13 19:57:04,027 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2021-07-13 19:57:04,027 INFO L430 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:57:04,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:57:04,027 INFO L82 PathProgramCache]: Analyzing trace with hash 67333598, now seen corresponding path program 221 times [2021-07-13 19:57:04,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:57:04,028 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215886043] [2021-07-13 19:57:04,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:57:04,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:57:04,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:57:04,245 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:57:04,246 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215886043] [2021-07-13 19:57:04,246 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215886043] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:57:04,246 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:57:04,246 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:57:04,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375318364] [2021-07-13 19:57:04,246 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:57:04,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:57:04,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:57:04,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:57:04,246 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) [2021-07-13 19:57:11,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:57:11,441 INFO L93 Difference]: Finished difference Result 23042 states and 82015 transitions. [2021-07-13 19:57:11,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2021-07-13 19:57:11,442 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 [2021-07-13 19:57:11,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:57:11,498 INFO L225 Difference]: With dead ends: 23042 [2021-07-13 19:57:11,498 INFO L226 Difference]: Without dead ends: 22757 [2021-07-13 19:57:11,500 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11097 ImplicationChecksByTransitivity, 4400.6ms TimeCoverageRelationStatistics Valid=1794, Invalid=26936, Unknown=0, NotChecked=0, Total=28730 [2021-07-13 19:57:11,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22757 states. [2021-07-13 19:57:11,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22757 to 11188. [2021-07-13 19:57:11,801 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) [2021-07-13 19:57:11,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11188 states to 11188 states and 40220 transitions. [2021-07-13 19:57:11,830 INFO L78 Accepts]: Start accepts. Automaton has 11188 states and 40220 transitions. Word has length 47 [2021-07-13 19:57:11,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:57:11,830 INFO L482 AbstractCegarLoop]: Abstraction has 11188 states and 40220 transitions. [2021-07-13 19:57:11,830 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) [2021-07-13 19:57:11,830 INFO L276 IsEmpty]: Start isEmpty. Operand 11188 states and 40220 transitions. [2021-07-13 19:57:11,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:57:11,849 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:57:11,849 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] [2021-07-13 19:57:11,849 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2021-07-13 19:57:11,849 INFO L430 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:57:11,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:57:11,849 INFO L82 PathProgramCache]: Analyzing trace with hash -941021158, now seen corresponding path program 222 times [2021-07-13 19:57:11,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:57:11,849 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399380563] [2021-07-13 19:57:11,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:57:11,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:57:12,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:57:12,054 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:57:12,054 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399380563] [2021-07-13 19:57:12,054 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399380563] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:57:12,054 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:57:12,054 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:57:12,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505144871] [2021-07-13 19:57:12,054 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:57:12,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:57:12,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:57:12,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:57:12,055 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) [2021-07-13 19:57:12,501 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 18 [2021-07-13 19:57:17,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:57:17,092 INFO L93 Difference]: Finished difference Result 20086 states and 72142 transitions. [2021-07-13 19:57:17,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2021-07-13 19:57:17,093 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 [2021-07-13 19:57:17,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:57:17,146 INFO L225 Difference]: With dead ends: 20086 [2021-07-13 19:57:17,147 INFO L226 Difference]: Without dead ends: 19748 [2021-07-13 19:57:17,148 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5482 ImplicationChecksByTransitivity, 2950.1ms TimeCoverageRelationStatistics Valid=1105, Invalid=14147, Unknown=0, NotChecked=0, Total=15252 [2021-07-13 19:57:17,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19748 states. [2021-07-13 19:57:17,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19748 to 12554. [2021-07-13 19:57:17,447 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) [2021-07-13 19:57:17,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12554 states to 12554 states and 45357 transitions. [2021-07-13 19:57:17,481 INFO L78 Accepts]: Start accepts. Automaton has 12554 states and 45357 transitions. Word has length 47 [2021-07-13 19:57:17,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:57:17,481 INFO L482 AbstractCegarLoop]: Abstraction has 12554 states and 45357 transitions. [2021-07-13 19:57:17,481 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) [2021-07-13 19:57:17,481 INFO L276 IsEmpty]: Start isEmpty. Operand 12554 states and 45357 transitions. [2021-07-13 19:57:17,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:57:17,504 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:57:17,504 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] [2021-07-13 19:57:17,504 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2021-07-13 19:57:17,504 INFO L430 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:57:17,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:57:17,504 INFO L82 PathProgramCache]: Analyzing trace with hash 693572570, now seen corresponding path program 223 times [2021-07-13 19:57:17,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:57:17,504 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017163827] [2021-07-13 19:57:17,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:57:17,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:57:17,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:57:17,727 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:57:17,727 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017163827] [2021-07-13 19:57:17,727 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017163827] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:57:17,727 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:57:17,727 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:57:17,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287561357] [2021-07-13 19:57:17,727 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:57:17,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:57:17,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:57:17,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:57:17,728 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) [2021-07-13 19:57:24,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:57:24,629 INFO L93 Difference]: Finished difference Result 22418 states and 80247 transitions. [2021-07-13 19:57:24,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2021-07-13 19:57:24,629 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 [2021-07-13 19:57:24,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:57:24,689 INFO L225 Difference]: With dead ends: 22418 [2021-07-13 19:57:24,689 INFO L226 Difference]: Without dead ends: 21923 [2021-07-13 19:57:24,691 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10790 ImplicationChecksByTransitivity, 4449.8ms TimeCoverageRelationStatistics Valid=1776, Invalid=25946, Unknown=0, NotChecked=0, Total=27722 [2021-07-13 19:57:24,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21923 states. [2021-07-13 19:57:25,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21923 to 12811. [2021-07-13 19:57:25,059 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) [2021-07-13 19:57:25,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12811 states to 12811 states and 46221 transitions. [2021-07-13 19:57:25,094 INFO L78 Accepts]: Start accepts. Automaton has 12811 states and 46221 transitions. Word has length 47 [2021-07-13 19:57:25,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:57:25,094 INFO L482 AbstractCegarLoop]: Abstraction has 12811 states and 46221 transitions. [2021-07-13 19:57:25,094 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) [2021-07-13 19:57:25,094 INFO L276 IsEmpty]: Start isEmpty. Operand 12811 states and 46221 transitions. [2021-07-13 19:57:25,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:57:25,118 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:57:25,119 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] [2021-07-13 19:57:25,119 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2021-07-13 19:57:25,119 INFO L430 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:57:25,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:57:25,119 INFO L82 PathProgramCache]: Analyzing trace with hash -2007777412, now seen corresponding path program 224 times [2021-07-13 19:57:25,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:57:25,119 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163438595] [2021-07-13 19:57:25,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:57:25,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:57:25,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:57:25,330 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:57:25,330 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163438595] [2021-07-13 19:57:25,330 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163438595] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:57:25,330 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:57:25,330 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-07-13 19:57:25,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397615894] [2021-07-13 19:57:25,330 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 19:57:25,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:57:25,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 19:57:25,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:57:25,330 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) [2021-07-13 19:57:30,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:57:30,991 INFO L93 Difference]: Finished difference Result 20084 states and 71937 transitions. [2021-07-13 19:57:30,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2021-07-13 19:57:30,991 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 [2021-07-13 19:57:30,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:57:31,042 INFO L225 Difference]: With dead ends: 20084 [2021-07-13 19:57:31,042 INFO L226 Difference]: Without dead ends: 19746 [2021-07-13 19:57:31,043 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6674 ImplicationChecksByTransitivity, 3136.9ms TimeCoverageRelationStatistics Valid=1257, Invalid=16833, Unknown=0, NotChecked=0, Total=18090 [2021-07-13 19:57:31,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19746 states. [2021-07-13 19:57:31,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19746 to 12826. [2021-07-13 19:57:31,335 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) [2021-07-13 19:57:31,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12826 states to 12826 states and 46278 transitions. [2021-07-13 19:57:31,369 INFO L78 Accepts]: Start accepts. Automaton has 12826 states and 46278 transitions. Word has length 47 [2021-07-13 19:57:31,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:57:31,369 INFO L482 AbstractCegarLoop]: Abstraction has 12826 states and 46278 transitions. [2021-07-13 19:57:31,369 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) [2021-07-13 19:57:31,369 INFO L276 IsEmpty]: Start isEmpty. Operand 12826 states and 46278 transitions. [2021-07-13 19:57:31,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:57:31,394 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:57:31,394 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] [2021-07-13 19:57:31,394 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2021-07-13 19:57:31,394 INFO L430 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:57:31,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:57:31,394 INFO L82 PathProgramCache]: Analyzing trace with hash -639347750, now seen corresponding path program 225 times [2021-07-13 19:57:31,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:57:31,394 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913243433] [2021-07-13 19:57:31,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:57:31,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:57:31,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:57:31,614 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:57:31,614 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913243433] [2021-07-13 19:57:31,614 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913243433] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:57:31,614 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:57:31,614 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:57:31,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705029586] [2021-07-13 19:57:31,614 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:57:31,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:57:31,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:57:31,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:57:31,615 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) [2021-07-13 19:57:39,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:57:39,325 INFO L93 Difference]: Finished difference Result 23699 states and 84833 transitions. [2021-07-13 19:57:39,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2021-07-13 19:57:39,325 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 [2021-07-13 19:57:39,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:57:39,385 INFO L225 Difference]: With dead ends: 23699 [2021-07-13 19:57:39,386 INFO L226 Difference]: Without dead ends: 23018 [2021-07-13 19:57:39,388 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11818 ImplicationChecksByTransitivity, 4450.9ms TimeCoverageRelationStatistics Valid=1872, Invalid=28230, Unknown=0, NotChecked=0, Total=30102 [2021-07-13 19:57:39,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23018 states. [2021-07-13 19:57:39,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23018 to 13332. [2021-07-13 19:57:39,783 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) [2021-07-13 19:57:39,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13332 states to 13332 states and 48138 transitions. [2021-07-13 19:57:39,819 INFO L78 Accepts]: Start accepts. Automaton has 13332 states and 48138 transitions. Word has length 47 [2021-07-13 19:57:39,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:57:39,819 INFO L482 AbstractCegarLoop]: Abstraction has 13332 states and 48138 transitions. [2021-07-13 19:57:39,819 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) [2021-07-13 19:57:39,819 INFO L276 IsEmpty]: Start isEmpty. Operand 13332 states and 48138 transitions. [2021-07-13 19:57:39,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:57:39,845 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:57:39,845 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] [2021-07-13 19:57:39,845 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2021-07-13 19:57:39,845 INFO L430 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:57:39,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:57:39,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1143056098, now seen corresponding path program 226 times [2021-07-13 19:57:39,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:57:39,845 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45572950] [2021-07-13 19:57:39,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:57:39,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:57:40,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:57:40,076 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:57:40,076 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45572950] [2021-07-13 19:57:40,076 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45572950] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:57:40,076 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:57:40,076 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:57:40,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489611122] [2021-07-13 19:57:40,076 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:57:40,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:57:40,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:57:40,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:57:40,077 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) [2021-07-13 19:57:47,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:57:47,073 INFO L93 Difference]: Finished difference Result 24381 states and 87583 transitions. [2021-07-13 19:57:47,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2021-07-13 19:57:47,073 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 [2021-07-13 19:57:47,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:57:47,142 INFO L225 Difference]: With dead ends: 24381 [2021-07-13 19:57:47,142 INFO L226 Difference]: Without dead ends: 23914 [2021-07-13 19:57:47,144 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10081 ImplicationChecksByTransitivity, 4420.9ms TimeCoverageRelationStatistics Valid=1693, Invalid=24389, Unknown=0, NotChecked=0, Total=26082 [2021-07-13 19:57:47,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23914 states. [2021-07-13 19:57:47,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23914 to 13748. [2021-07-13 19:57:47,515 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) [2021-07-13 19:57:47,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13748 states to 13748 states and 49631 transitions. [2021-07-13 19:57:47,552 INFO L78 Accepts]: Start accepts. Automaton has 13748 states and 49631 transitions. Word has length 47 [2021-07-13 19:57:47,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:57:47,552 INFO L482 AbstractCegarLoop]: Abstraction has 13748 states and 49631 transitions. [2021-07-13 19:57:47,552 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) [2021-07-13 19:57:47,552 INFO L276 IsEmpty]: Start isEmpty. Operand 13748 states and 49631 transitions. [2021-07-13 19:57:47,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:57:47,578 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:57:47,578 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] [2021-07-13 19:57:47,578 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2021-07-13 19:57:47,578 INFO L430 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:57:47,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:57:47,578 INFO L82 PathProgramCache]: Analyzing trace with hash 535182008, now seen corresponding path program 227 times [2021-07-13 19:57:47,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:57:47,579 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433910607] [2021-07-13 19:57:47,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:57:47,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:57:47,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:57:47,897 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:57:47,897 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433910607] [2021-07-13 19:57:47,897 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433910607] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:57:47,897 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:57:47,897 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:57:47,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022246005] [2021-07-13 19:57:47,897 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:57:47,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:57:47,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:57:47,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:57:47,898 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) [2021-07-13 19:57:53,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:57:53,635 INFO L93 Difference]: Finished difference Result 23835 states and 85249 transitions. [2021-07-13 19:57:53,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2021-07-13 19:57:53,635 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 [2021-07-13 19:57:53,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:57:53,696 INFO L225 Difference]: With dead ends: 23835 [2021-07-13 19:57:53,697 INFO L226 Difference]: Without dead ends: 23310 [2021-07-13 19:57:53,698 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5876 ImplicationChecksByTransitivity, 3480.1ms TimeCoverageRelationStatistics Valid=1211, Invalid=15301, Unknown=0, NotChecked=0, Total=16512 [2021-07-13 19:57:53,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23310 states. [2021-07-13 19:57:54,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23310 to 14261. [2021-07-13 19:57:54,127 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) [2021-07-13 19:57:54,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14261 states to 14261 states and 51544 transitions. [2021-07-13 19:57:54,168 INFO L78 Accepts]: Start accepts. Automaton has 14261 states and 51544 transitions. Word has length 47 [2021-07-13 19:57:54,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:57:54,168 INFO L482 AbstractCegarLoop]: Abstraction has 14261 states and 51544 transitions. [2021-07-13 19:57:54,168 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) [2021-07-13 19:57:54,168 INFO L276 IsEmpty]: Start isEmpty. Operand 14261 states and 51544 transitions. [2021-07-13 19:57:54,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:57:54,195 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:57:54,196 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] [2021-07-13 19:57:54,196 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2021-07-13 19:57:54,196 INFO L430 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:57:54,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:57:54,196 INFO L82 PathProgramCache]: Analyzing trace with hash 469119450, now seen corresponding path program 228 times [2021-07-13 19:57:54,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:57:54,196 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542045011] [2021-07-13 19:57:54,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:57:54,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:57:54,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:57:54,413 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:57:54,413 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542045011] [2021-07-13 19:57:54,413 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542045011] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:57:54,413 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:57:54,413 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:57:54,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947610071] [2021-07-13 19:57:54,413 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:57:54,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:57:54,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:57:54,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:57:54,414 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) [2021-07-13 19:57:56,501 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 24 [2021-07-13 19:58:00,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:58:00,643 INFO L93 Difference]: Finished difference Result 24200 states and 86642 transitions. [2021-07-13 19:58:00,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2021-07-13 19:58:00,643 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 [2021-07-13 19:58:00,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:58:00,703 INFO L225 Difference]: With dead ends: 24200 [2021-07-13 19:58:00,703 INFO L226 Difference]: Without dead ends: 23649 [2021-07-13 19:58:00,704 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6934 ImplicationChecksByTransitivity, 3713.7ms TimeCoverageRelationStatistics Valid=1270, Invalid=17636, Unknown=0, NotChecked=0, Total=18906 [2021-07-13 19:58:00,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23649 states. [2021-07-13 19:58:01,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23649 to 14486. [2021-07-13 19:58:01,066 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) [2021-07-13 19:58:01,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14486 states to 14486 states and 52290 transitions. [2021-07-13 19:58:01,109 INFO L78 Accepts]: Start accepts. Automaton has 14486 states and 52290 transitions. Word has length 47 [2021-07-13 19:58:01,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:58:01,109 INFO L482 AbstractCegarLoop]: Abstraction has 14486 states and 52290 transitions. [2021-07-13 19:58:01,109 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) [2021-07-13 19:58:01,109 INFO L276 IsEmpty]: Start isEmpty. Operand 14486 states and 52290 transitions. [2021-07-13 19:58:01,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:58:01,138 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:58:01,139 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] [2021-07-13 19:58:01,139 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2021-07-13 19:58:01,139 INFO L430 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:58:01,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:58:01,139 INFO L82 PathProgramCache]: Analyzing trace with hash -788534788, now seen corresponding path program 229 times [2021-07-13 19:58:01,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:58:01,139 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24848730] [2021-07-13 19:58:01,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:58:01,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:58:01,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:58:01,367 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:58:01,367 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24848730] [2021-07-13 19:58:01,367 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24848730] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:58:01,367 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:58:01,367 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:58:01,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228875991] [2021-07-13 19:58:01,367 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:58:01,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:58:01,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:58:01,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:58:01,367 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) [2021-07-13 19:58:09,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:58:09,581 INFO L93 Difference]: Finished difference Result 26456 states and 94786 transitions. [2021-07-13 19:58:09,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2021-07-13 19:58:09,581 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 [2021-07-13 19:58:09,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:58:09,657 INFO L225 Difference]: With dead ends: 26456 [2021-07-13 19:58:09,657 INFO L226 Difference]: Without dead ends: 25973 [2021-07-13 19:58:09,659 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12688 ImplicationChecksByTransitivity, 4861.8ms TimeCoverageRelationStatistics Valid=1977, Invalid=30243, Unknown=0, NotChecked=0, Total=32220 [2021-07-13 19:58:09,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25973 states. [2021-07-13 19:58:10,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25973 to 14845. [2021-07-13 19:58:10,088 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) [2021-07-13 19:58:10,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14845 states to 14845 states and 53641 transitions. [2021-07-13 19:58:10,129 INFO L78 Accepts]: Start accepts. Automaton has 14845 states and 53641 transitions. Word has length 47 [2021-07-13 19:58:10,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:58:10,129 INFO L482 AbstractCegarLoop]: Abstraction has 14845 states and 53641 transitions. [2021-07-13 19:58:10,129 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) [2021-07-13 19:58:10,129 INFO L276 IsEmpty]: Start isEmpty. Operand 14845 states and 53641 transitions. [2021-07-13 19:58:10,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:58:10,158 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:58:10,158 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] [2021-07-13 19:58:10,158 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2021-07-13 19:58:10,158 INFO L430 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:58:10,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:58:10,158 INFO L82 PathProgramCache]: Analyzing trace with hash -519871458, now seen corresponding path program 230 times [2021-07-13 19:58:10,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:58:10,158 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009772873] [2021-07-13 19:58:10,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:58:10,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:58:10,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:58:10,379 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:58:10,379 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009772873] [2021-07-13 19:58:10,379 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009772873] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:58:10,379 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:58:10,379 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:58:10,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655601439] [2021-07-13 19:58:10,379 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:58:10,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:58:10,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:58:10,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:58:10,380 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) [2021-07-13 19:58:12,914 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 18 [2021-07-13 19:58:19,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:58:19,511 INFO L93 Difference]: Finished difference Result 30319 states and 108230 transitions. [2021-07-13 19:58:19,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2021-07-13 19:58:19,512 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 [2021-07-13 19:58:19,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:58:19,597 INFO L225 Difference]: With dead ends: 30319 [2021-07-13 19:58:19,597 INFO L226 Difference]: Without dead ends: 29715 [2021-07-13 19:58:19,598 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16816 ImplicationChecksByTransitivity, 5736.5ms TimeCoverageRelationStatistics Valid=2284, Invalid=39128, Unknown=0, NotChecked=0, Total=41412 [2021-07-13 19:58:19,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29715 states. [2021-07-13 19:58:20,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29715 to 14990. [2021-07-13 19:58:20,067 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) [2021-07-13 19:58:20,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14990 states to 14990 states and 54180 transitions. [2021-07-13 19:58:20,109 INFO L78 Accepts]: Start accepts. Automaton has 14990 states and 54180 transitions. Word has length 47 [2021-07-13 19:58:20,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:58:20,109 INFO L482 AbstractCegarLoop]: Abstraction has 14990 states and 54180 transitions. [2021-07-13 19:58:20,109 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) [2021-07-13 19:58:20,109 INFO L276 IsEmpty]: Start isEmpty. Operand 14990 states and 54180 transitions. [2021-07-13 19:58:20,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:58:20,138 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:58:20,138 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] [2021-07-13 19:58:20,138 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2021-07-13 19:58:20,138 INFO L430 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:58:20,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:58:20,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1051549978, now seen corresponding path program 231 times [2021-07-13 19:58:20,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:58:20,139 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167715208] [2021-07-13 19:58:20,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:58:20,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:58:20,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:58:20,361 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:58:20,361 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167715208] [2021-07-13 19:58:20,361 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167715208] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:58:20,361 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:58:20,361 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:58:20,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027197189] [2021-07-13 19:58:20,361 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:58:20,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:58:20,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:58:20,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:58:20,362 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) [2021-07-13 19:58:21,087 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 17 [2021-07-13 19:58:30,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:58:30,256 INFO L93 Difference]: Finished difference Result 31990 states and 115051 transitions. [2021-07-13 19:58:30,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2021-07-13 19:58:30,256 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 [2021-07-13 19:58:30,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:58:30,355 INFO L225 Difference]: With dead ends: 31990 [2021-07-13 19:58:30,355 INFO L226 Difference]: Without dead ends: 31267 [2021-07-13 19:58:30,356 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14894 ImplicationChecksByTransitivity, 5946.2ms TimeCoverageRelationStatistics Valid=2194, Invalid=34862, Unknown=0, NotChecked=0, Total=37056 [2021-07-13 19:58:30,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31267 states. [2021-07-13 19:58:30,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31267 to 15966. [2021-07-13 19:58:30,823 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) [2021-07-13 19:58:30,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15966 states to 15966 states and 57852 transitions. [2021-07-13 19:58:30,865 INFO L78 Accepts]: Start accepts. Automaton has 15966 states and 57852 transitions. Word has length 47 [2021-07-13 19:58:30,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:58:30,865 INFO L482 AbstractCegarLoop]: Abstraction has 15966 states and 57852 transitions. [2021-07-13 19:58:30,865 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) [2021-07-13 19:58:30,865 INFO L276 IsEmpty]: Start isEmpty. Operand 15966 states and 57852 transitions. [2021-07-13 19:58:30,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:58:30,896 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:58:30,896 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] [2021-07-13 19:58:30,896 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2021-07-13 19:58:30,896 INFO L430 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:58:30,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:58:30,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1350441656, now seen corresponding path program 232 times [2021-07-13 19:58:30,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:58:30,897 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104502342] [2021-07-13 19:58:30,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:58:30,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:58:31,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:58:31,128 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:58:31,128 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104502342] [2021-07-13 19:58:31,128 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104502342] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:58:31,128 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:58:31,128 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:58:31,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460338524] [2021-07-13 19:58:31,128 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:58:31,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:58:31,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:58:31,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:58:31,128 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) [2021-07-13 19:58:31,833 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 18 [2021-07-13 19:58:39,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:58:39,762 INFO L93 Difference]: Finished difference Result 32336 states and 115883 transitions. [2021-07-13 19:58:39,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2021-07-13 19:58:39,762 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 [2021-07-13 19:58:39,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:58:39,858 INFO L225 Difference]: With dead ends: 32336 [2021-07-13 19:58:39,858 INFO L226 Difference]: Without dead ends: 31756 [2021-07-13 19:58:39,859 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13831 ImplicationChecksByTransitivity, 5422.8ms TimeCoverageRelationStatistics Valid=2096, Invalid=32686, Unknown=0, NotChecked=0, Total=34782 [2021-07-13 19:58:39,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31756 states. [2021-07-13 19:58:40,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31756 to 16713. [2021-07-13 19:58:40,358 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) [2021-07-13 19:58:40,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16713 states to 16713 states and 60651 transitions. [2021-07-13 19:58:40,407 INFO L78 Accepts]: Start accepts. Automaton has 16713 states and 60651 transitions. Word has length 47 [2021-07-13 19:58:40,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:58:40,408 INFO L482 AbstractCegarLoop]: Abstraction has 16713 states and 60651 transitions. [2021-07-13 19:58:40,408 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) [2021-07-13 19:58:40,408 INFO L276 IsEmpty]: Start isEmpty. Operand 16713 states and 60651 transitions. [2021-07-13 19:58:40,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:58:40,442 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:58:40,442 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] [2021-07-13 19:58:40,442 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2021-07-13 19:58:40,442 INFO L430 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:58:40,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:58:40,442 INFO L82 PathProgramCache]: Analyzing trace with hash -374978854, now seen corresponding path program 233 times [2021-07-13 19:58:40,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:58:40,443 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907986588] [2021-07-13 19:58:40,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:58:40,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:58:40,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:58:40,773 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:58:40,773 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907986588] [2021-07-13 19:58:40,773 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907986588] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:58:40,773 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:58:40,773 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:58:40,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124933864] [2021-07-13 19:58:40,773 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:58:40,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:58:40,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:58:40,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:58:40,774 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) [2021-07-13 19:58:48,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:58:48,560 INFO L93 Difference]: Finished difference Result 31575 states and 113377 transitions. [2021-07-13 19:58:48,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2021-07-13 19:58:48,561 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 [2021-07-13 19:58:48,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:58:48,656 INFO L225 Difference]: With dead ends: 31575 [2021-07-13 19:58:48,656 INFO L226 Difference]: Without dead ends: 30915 [2021-07-13 19:58:48,658 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11354 ImplicationChecksByTransitivity, 4618.4ms TimeCoverageRelationStatistics Valid=1745, Invalid=27325, Unknown=0, NotChecked=0, Total=29070 [2021-07-13 19:58:48,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30915 states. [2021-07-13 19:58:49,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30915 to 16871. [2021-07-13 19:58:49,124 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) [2021-07-13 19:58:49,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16871 states to 16871 states and 61191 transitions. [2021-07-13 19:58:49,171 INFO L78 Accepts]: Start accepts. Automaton has 16871 states and 61191 transitions. Word has length 47 [2021-07-13 19:58:49,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:58:49,171 INFO L482 AbstractCegarLoop]: Abstraction has 16871 states and 61191 transitions. [2021-07-13 19:58:49,171 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) [2021-07-13 19:58:49,172 INFO L276 IsEmpty]: Start isEmpty. Operand 16871 states and 61191 transitions. [2021-07-13 19:58:49,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:58:49,205 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:58:49,206 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] [2021-07-13 19:58:49,206 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2021-07-13 19:58:49,206 INFO L430 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:58:49,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:58:49,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1869500160, now seen corresponding path program 234 times [2021-07-13 19:58:49,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:58:49,206 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715216234] [2021-07-13 19:58:49,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:58:49,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:58:49,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:58:49,490 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:58:49,490 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715216234] [2021-07-13 19:58:49,490 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715216234] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:58:49,490 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:58:49,490 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:58:49,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777420528] [2021-07-13 19:58:49,490 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:58:49,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:58:49,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:58:49,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:58:49,491 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) [2021-07-13 19:58:57,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:58:57,729 INFO L93 Difference]: Finished difference Result 33481 states and 119699 transitions. [2021-07-13 19:58:57,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2021-07-13 19:58:57,729 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 [2021-07-13 19:58:57,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:58:57,830 INFO L225 Difference]: With dead ends: 33481 [2021-07-13 19:58:57,830 INFO L226 Difference]: Without dead ends: 32789 [2021-07-13 19:58:57,832 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14532 ImplicationChecksByTransitivity, 5313.7ms TimeCoverageRelationStatistics Valid=2200, Invalid=34090, Unknown=0, NotChecked=0, Total=36290 [2021-07-13 19:58:57,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32789 states. [2021-07-13 19:58:58,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32789 to 17317. [2021-07-13 19:58:58,338 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) [2021-07-13 19:58:58,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17317 states to 17317 states and 62858 transitions. [2021-07-13 19:58:58,389 INFO L78 Accepts]: Start accepts. Automaton has 17317 states and 62858 transitions. Word has length 47 [2021-07-13 19:58:58,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:58:58,389 INFO L482 AbstractCegarLoop]: Abstraction has 17317 states and 62858 transitions. [2021-07-13 19:58:58,389 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) [2021-07-13 19:58:58,389 INFO L276 IsEmpty]: Start isEmpty. Operand 17317 states and 62858 transitions. [2021-07-13 19:58:58,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:58:58,426 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:58:58,426 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] [2021-07-13 19:58:58,426 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2021-07-13 19:58:58,426 INFO L430 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:58:58,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:58:58,426 INFO L82 PathProgramCache]: Analyzing trace with hash 2035685278, now seen corresponding path program 235 times [2021-07-13 19:58:58,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:58:58,426 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961702732] [2021-07-13 19:58:58,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:58:58,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:58:58,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:58:58,649 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:58:58,649 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961702732] [2021-07-13 19:58:58,649 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961702732] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:58:58,649 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:58:58,649 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:58:58,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668390324] [2021-07-13 19:58:58,650 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:58:58,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:58:58,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:58:58,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:58:58,650 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) [2021-07-13 19:59:00,283 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 18 [2021-07-13 19:59:04,728 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 23 [2021-07-13 19:59:06,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:59:06,388 INFO L93 Difference]: Finished difference Result 31648 states and 113603 transitions. [2021-07-13 19:59:06,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2021-07-13 19:59:06,388 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 [2021-07-13 19:59:06,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:59:06,479 INFO L225 Difference]: With dead ends: 31648 [2021-07-13 19:59:06,479 INFO L226 Difference]: Without dead ends: 31499 [2021-07-13 19:59:06,481 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12115 ImplicationChecksByTransitivity, 4989.8ms TimeCoverageRelationStatistics Valid=1907, Invalid=28893, Unknown=0, NotChecked=0, Total=30800 [2021-07-13 19:59:06,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31499 states. [2021-07-13 19:59:06,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31499 to 17338. [2021-07-13 19:59:06,974 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) [2021-07-13 19:59:07,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17338 states to 17338 states and 62919 transitions. [2021-07-13 19:59:07,022 INFO L78 Accepts]: Start accepts. Automaton has 17338 states and 62919 transitions. Word has length 47 [2021-07-13 19:59:07,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:59:07,022 INFO L482 AbstractCegarLoop]: Abstraction has 17338 states and 62919 transitions. [2021-07-13 19:59:07,022 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) [2021-07-13 19:59:07,022 INFO L276 IsEmpty]: Start isEmpty. Operand 17338 states and 62919 transitions. [2021-07-13 19:59:07,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-13 19:59:07,056 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:59:07,057 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] [2021-07-13 19:59:07,057 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2021-07-13 19:59:07,057 INFO L430 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:59:07,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:59:07,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1007019878, now seen corresponding path program 236 times [2021-07-13 19:59:07,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:59:07,057 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708773867] [2021-07-13 19:59:07,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:59:07,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:59:07,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:59:07,274 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:59:07,274 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708773867] [2021-07-13 19:59:07,274 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708773867] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:59:07,274 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:59:07,274 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-07-13 19:59:07,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249001520] [2021-07-13 19:59:07,275 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:59:07,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:59:07,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:59:07,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:59:07,275 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... [2021-07-13 19:59:13,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2021-07-13 19:59:13,975 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2021-07-13 19:59:13,975 WARN L547 AbstractCegarLoop]: Verification canceled [2021-07-13 19:59:13,975 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was TIMEOUT (2/3) [2021-07-13 19:59:13,977 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-07-13 19:59:13,977 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-13 19:59:13,977 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-13 19:59:13,977 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-13 19:59:13,977 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-13 19:59:13,977 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-13 19:59:13,977 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-13 19:59:13,977 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-13 19:59:13,977 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == thread1Thread1of1ForFork2======== [2021-07-13 19:59:13,978 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 80 places, 65 transitions, 202 flow [2021-07-13 19:59:13,978 WARN L547 AbstractCegarLoop]: Verification canceled [2021-07-13 19:59:13,979 INFO L301 ceAbstractionStarter]: Result for error location thread1Thread1of1ForFork2 was TIMEOUT (3/3) [2021-07-13 19:59:13,979 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-13 19:59:13,980 WARN L196 ceAbstractionStarter]: Timeout [2021-07-13 19:59:13,980 INFO L202 PluginConnector]: Adding new model barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 07:59:13 BasicIcfg [2021-07-13 19:59:13,980 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-13 19:59:13,981 INFO L168 Benchmark]: Toolchain (without parser) took 750636.80 ms. Allocated memory was 197.1 MB in the beginning and 2.0 GB in the end (delta: 1.8 GB). Free memory was 177.2 MB in the beginning and 1.1 GB in the end (delta: -957.7 MB). Peak memory consumption was 803.1 MB. Max. memory is 8.0 GB. [2021-07-13 19:59:13,981 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.09 ms. Allocated memory is still 197.1 MB. Free memory is still 178.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-13 19:59:13,981 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.83 ms. Allocated memory is still 197.1 MB. Free memory was 177.2 MB in the beginning and 175.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-13 19:59:13,981 INFO L168 Benchmark]: Boogie Preprocessor took 18.20 ms. Allocated memory is still 197.1 MB. Free memory was 175.7 MB in the beginning and 174.8 MB in the end (delta: 878.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-07-13 19:59:13,981 INFO L168 Benchmark]: RCFGBuilder took 269.21 ms. Allocated memory is still 197.1 MB. Free memory was 174.6 MB in the beginning and 161.0 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-07-13 19:59:13,981 INFO L168 Benchmark]: TraceAbstraction took 750314.47 ms. Allocated memory was 197.1 MB in the beginning and 2.0 GB in the end (delta: 1.8 GB). Free memory was 160.6 MB in the beginning and 1.1 GB in the end (delta: -974.3 MB). Peak memory consumption was 786.3 MB. Max. memory is 8.0 GB. [2021-07-13 19:59:13,981 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 0.09 ms. Allocated memory is still 197.1 MB. Free memory is still 178.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 30.83 ms. Allocated memory is still 197.1 MB. Free memory was 177.2 MB in the beginning and 175.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 18.20 ms. Allocated memory is still 197.1 MB. Free memory was 175.7 MB in the beginning and 174.8 MB in the end (delta: 878.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * RCFGBuilder took 269.21 ms. Allocated memory is still 197.1 MB. Free memory was 174.6 MB in the beginning and 161.0 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 750314.47 ms. Allocated memory was 197.1 MB in the beginning and 2.0 GB in the end (delta: 1.8 GB). Free memory was 160.6 MB in the beginning and 1.1 GB in the end (delta: -974.3 MB). Peak memory consumption was 786.3 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 153 states, 19 states before enhancement),while ReachableStatesComputation was computing reachable states (28532 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: thread4Thread1of1ForFork4 with 1 thread instances CFG has 13 procedures, 112 locations, 11 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 98.3ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 20.9ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 74.8ms, 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: 750079.5ms, OverallIterations: 236, TraceHistogramMax: 1, EmptinessCheckTime: 3015.0ms, AutomataDifference: 653623.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 183.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 70760 SDtfs, 163264 SDslu, 841629 SDs, 0 SdLazy, 651500 SolverSat, 30169 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 217014.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17963 GetRequests, 271 SyntacticMatches, 284 SemanticMatches, 17408 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572898 ImplicationChecksByTransitivity, 396414.9ms 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: 38743.5ms AutomataMinimizationTime, 235 MinimizatonAttempts, 718316 StatesRemovedByMinimization, 233 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 182.5ms SsaConstructionTime, 458.6ms SatisfiabilityAnalysisTime, 52948.8ms 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: 1.5ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1.2ms, 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