/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/reducercommutativity/sep05-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 18:30:21,947 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 18:30:21,949 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 18:30:21,973 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 18:30:21,973 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 18:30:21,974 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 18:30:21,976 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 18:30:21,977 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 18:30:21,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 18:30:21,980 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 18:30:21,981 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 18:30:21,982 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 18:30:21,982 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 18:30:21,983 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 18:30:21,984 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 18:30:21,985 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 18:30:21,986 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 18:30:21,987 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 18:30:21,989 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 18:30:21,991 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 18:30:21,992 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 18:30:21,993 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 18:30:21,994 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 18:30:21,995 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 18:30:22,001 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 18:30:22,004 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 18:30:22,004 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 18:30:22,005 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 18:30:22,005 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 18:30:22,006 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 18:30:22,007 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 18:30:22,011 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 18:30:22,012 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 18:30:22,012 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 18:30:22,013 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 18:30:22,013 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 18:30:22,016 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 18:30:22,016 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 18:30:22,016 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 18:30:22,017 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 18:30:22,018 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 18:30:22,019 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 18:30:22,060 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 18:30:22,060 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 18:30:22,062 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 18:30:22,062 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 18:30:22,063 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 18:30:22,063 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 18:30:22,063 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 18:30:22,063 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 18:30:22,063 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 18:30:22,064 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 18:30:22,064 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 18:30:22,065 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 18:30:22,065 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 18:30:22,065 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 18:30:22,065 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 18:30:22,066 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 18:30:22,066 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 18:30:22,066 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 18:30:22,066 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 18:30:22,066 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 18:30:22,067 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 18:30:22,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 18:30:22,067 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 18:30:22,067 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 18:30:22,068 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 18:30:22,068 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 18:30:22,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 18:30:22,068 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 18:30:22,068 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 18:30:22,068 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 18:30:22,376 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 18:30:22,388 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 18:30:22,391 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 18:30:22,392 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 18:30:22,393 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 18:30:22,393 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sep05-1.i [2020-10-12 18:30:22,447 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/845fd2c13/51f1e74d1bd240158f93a0d8f494a9dc/FLAGa4cf4e1e6 [2020-10-12 18:30:22,880 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 18:30:22,880 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/sep05-1.i [2020-10-12 18:30:22,886 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/845fd2c13/51f1e74d1bd240158f93a0d8f494a9dc/FLAGa4cf4e1e6 [2020-10-12 18:30:23,279 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/845fd2c13/51f1e74d1bd240158f93a0d8f494a9dc [2020-10-12 18:30:23,287 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 18:30:23,289 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 18:30:23,290 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 18:30:23,290 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 18:30:23,293 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 18:30:23,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:30:23" (1/1) ... [2020-10-12 18:30:23,298 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bee2e87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:30:23, skipping insertion in model container [2020-10-12 18:30:23,298 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:30:23" (1/1) ... [2020-10-12 18:30:23,306 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 18:30:23,327 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 18:30:23,529 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 18:30:23,537 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 18:30:23,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 18:30:23,575 INFO L208 MainTranslator]: Completed translation [2020-10-12 18:30:23,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:30:23 WrapperNode [2020-10-12 18:30:23,576 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 18:30:23,577 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 18:30:23,577 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 18:30:23,577 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 18:30:23,670 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:30:23" (1/1) ... [2020-10-12 18:30:23,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:30:23" (1/1) ... [2020-10-12 18:30:23,679 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:30:23" (1/1) ... [2020-10-12 18:30:23,679 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:30:23" (1/1) ... [2020-10-12 18:30:23,688 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:30:23" (1/1) ... [2020-10-12 18:30:23,693 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:30:23" (1/1) ... [2020-10-12 18:30:23,694 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:30:23" (1/1) ... [2020-10-12 18:30:23,697 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 18:30:23,697 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 18:30:23,698 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 18:30:23,698 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 18:30:23,699 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:30:23" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-12 18:30:23,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 18:30:23,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 18:30:23,756 INFO L138 BoogieDeclarations]: Found implementation of procedure sep [2020-10-12 18:30:23,756 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 18:30:23,756 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 18:30:23,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 18:30:23,757 INFO L130 BoogieDeclarations]: Found specification of procedure sep [2020-10-12 18:30:23,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 18:30:23,757 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 18:30:23,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 18:30:23,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 18:30:23,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 18:30:23,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 18:30:23,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 18:30:24,075 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 18:30:24,076 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-12 18:30:24,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:30:24 BoogieIcfgContainer [2020-10-12 18:30:24,079 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 18:30:24,081 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 18:30:24,081 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 18:30:24,084 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 18:30:24,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 06:30:23" (1/3) ... [2020-10-12 18:30:24,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c7c7935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:30:24, skipping insertion in model container [2020-10-12 18:30:24,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:30:23" (2/3) ... [2020-10-12 18:30:24,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c7c7935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:30:24, skipping insertion in model container [2020-10-12 18:30:24,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:30:24" (3/3) ... [2020-10-12 18:30:24,087 INFO L109 eAbstractionObserver]: Analyzing ICFG sep05-1.i [2020-10-12 18:30:24,096 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 18:30:24,101 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 18:30:24,115 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 18:30:24,135 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 18:30:24,135 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 18:30:24,135 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 18:30:24,136 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 18:30:24,136 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 18:30:24,136 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 18:30:24,136 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 18:30:24,136 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 18:30:24,151 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-10-12 18:30:24,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-12 18:30:24,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:30:24,158 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:30:24,158 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:30:24,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:30:24,164 INFO L82 PathProgramCache]: Analyzing trace with hash 794343521, now seen corresponding path program 1 times [2020-10-12 18:30:24,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:30:24,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1454543425] [2020-10-12 18:30:24,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:30:24,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:24,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:24,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:24,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:24,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:24,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:24,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:25,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:25,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 18:30:25,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 18:30:25,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1039 [2020-10-12 18:30:25,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:25,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 18:30:25,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:30:25,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 18:30:25,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 18:30:25,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:30:25,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:25,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:25,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:25,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:30:25,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:30:25,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:30:25,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:25,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:30:25,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:30:25,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:30:25,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:30:25,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:30:25,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:25,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:25,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:25,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:25,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:30:25,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:25,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 18:30:25,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:25,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:30:25,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:30:25,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:30:25,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:30:25,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-12 18:30:25,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:25,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:25,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:25,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:25,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:30:25,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:25,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-12 18:30:25,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:25,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:30:25,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:30:25,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:30:25,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:30:25,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 18:30:25,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:25,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:25,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:25,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:25,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:30:25,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:25,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-12 18:30:25,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:25,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:30:25,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:30:25,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:30:25,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:25,876 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-12 18:30:25,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1454543425] [2020-10-12 18:30:25,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:30:25,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 18:30:25,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031795200] [2020-10-12 18:30:25,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 18:30:25,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:30:25,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 18:30:25,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-12 18:30:25,905 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 11 states. [2020-10-12 18:30:26,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:30:26,237 INFO L93 Difference]: Finished difference Result 86 states and 126 transitions. [2020-10-12 18:30:26,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 18:30:26,239 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2020-10-12 18:30:26,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:30:26,250 INFO L225 Difference]: With dead ends: 86 [2020-10-12 18:30:26,250 INFO L226 Difference]: Without dead ends: 52 [2020-10-12 18:30:26,255 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-10-12 18:30:26,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-12 18:30:26,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 38. [2020-10-12 18:30:26,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-12 18:30:26,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 50 transitions. [2020-10-12 18:30:26,308 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 50 transitions. Word has length 32 [2020-10-12 18:30:26,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:30:26,309 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 50 transitions. [2020-10-12 18:30:26,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 18:30:26,309 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 50 transitions. [2020-10-12 18:30:26,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-12 18:30:26,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:30:26,313 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:30:26,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 18:30:26,313 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:30:26,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:30:26,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1764294835, now seen corresponding path program 1 times [2020-10-12 18:30:26,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:30:26,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1650272369] [2020-10-12 18:30:26,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:30:26,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:26,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:26,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:26,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:26,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:26,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:27,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:27,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-12 18:30:27,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:30:27,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1042 [2020-10-12 18:30:27,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:27,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:30:27,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-12 18:30:27,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 18:30:27,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:27,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:30:27,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:27,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:27,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:27,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:30:27,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:30:27,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:30:27,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:27,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:30:27,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:30:27,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:30:27,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:27,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:30:27,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:27,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:27,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:27,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:27,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:30:27,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:27,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 18:30:27,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:27,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:30:27,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:27,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 18:30:27,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:27,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-12 18:30:27,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:27,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:27,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:27,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:27,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:30:27,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:27,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 18:30:27,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:27,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:30:27,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:27,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 18:30:27,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:30:27,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 18:30:27,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:27,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:27,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:27,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 18:30:27,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:30:27,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 18:30:27,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:27,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:30:27,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:27,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 18:30:27,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:30:27,473 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-12 18:30:27,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1650272369] [2020-10-12 18:30:27,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:30:27,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 18:30:27,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171579714] [2020-10-12 18:30:27,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 18:30:27,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:30:27,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 18:30:27,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 18:30:27,481 INFO L87 Difference]: Start difference. First operand 38 states and 50 transitions. Second operand 5 states. [2020-10-12 18:30:27,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:30:27,602 INFO L93 Difference]: Finished difference Result 62 states and 86 transitions. [2020-10-12 18:30:27,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 18:30:27,602 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-10-12 18:30:27,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:30:27,604 INFO L225 Difference]: With dead ends: 62 [2020-10-12 18:30:27,604 INFO L226 Difference]: Without dead ends: 33 [2020-10-12 18:30:27,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-12 18:30:27,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-12 18:30:27,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2020-10-12 18:30:27,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-12 18:30:27,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2020-10-12 18:30:27,622 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 35 [2020-10-12 18:30:27,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:30:27,623 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2020-10-12 18:30:27,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 18:30:27,623 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2020-10-12 18:30:27,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-12 18:30:27,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:30:27,629 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:30:27,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 18:30:27,630 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:30:27,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:30:27,630 INFO L82 PathProgramCache]: Analyzing trace with hash -738945770, now seen corresponding path program 2 times [2020-10-12 18:30:27,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:30:27,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285401362] [2020-10-12 18:30:27,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:30:27,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:27,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:27,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:27,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:27,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:28,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:32,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:32,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 18:30:32,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:30:32,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 18:30:32,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:32,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:30:32,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-12 18:30:32,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:30:32,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:32,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:30:32,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:32,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:32,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:32,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:30:32,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:30:32,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 18:30:32,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:32,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:30:32,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:30:32,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:30:32,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:32,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:30:32,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:32,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:32,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:32,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:32,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 18:30:32,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:32,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-12 18:30:32,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:32,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:30:32,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:32,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:30:32,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:30:32,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 18:30:32,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:32,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:32,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:32,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 18:30:32,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:30:32,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 18:30:32,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:32,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:30:32,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:32,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:30:32,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:30:32,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 18:30:32,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:32,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:32,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:32,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:32,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 18:30:32,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:32,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-12 18:30:32,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:32,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:30:32,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:32,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:30:32,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:30:32,930 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-12 18:30:32,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1285401362] [2020-10-12 18:30:32,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:30:32,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 18:30:32,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205664671] [2020-10-12 18:30:32,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 18:30:32,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:30:32,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 18:30:32,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 18:30:32,935 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand 6 states. [2020-10-12 18:30:33,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:30:33,069 INFO L93 Difference]: Finished difference Result 58 states and 74 transitions. [2020-10-12 18:30:33,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 18:30:33,070 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2020-10-12 18:30:33,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:30:33,071 INFO L225 Difference]: With dead ends: 58 [2020-10-12 18:30:33,071 INFO L226 Difference]: Without dead ends: 36 [2020-10-12 18:30:33,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 18:30:33,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-12 18:30:33,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-10-12 18:30:33,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-12 18:30:33,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2020-10-12 18:30:33,084 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 50 [2020-10-12 18:30:33,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:30:33,085 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2020-10-12 18:30:33,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 18:30:33,085 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2020-10-12 18:30:33,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-12 18:30:33,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:30:33,089 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:30:33,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 18:30:33,089 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:30:33,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:30:33,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1066977793, now seen corresponding path program 3 times [2020-10-12 18:30:33,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:30:33,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194542943] [2020-10-12 18:30:33,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:30:33,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:33,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:33,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:33,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:33,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:37,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:37,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:38,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:38,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 18:30:38,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 18:30:38,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-12 18:30:38,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:38,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 18:30:38,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:30:38,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 18:30:38,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:38,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:30:38,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:38,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:38,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:38,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:30:38,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:30:38,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:30:38,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:38,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:30:38,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:30:38,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:30:38,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 18:30:38,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:30:38,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:38,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:38,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:38,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:38,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 18:30:38,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:38,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-10-12 18:30:38,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:38,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:30:38,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:30:38,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 18:30:38,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:38,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 18:30:38,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:38,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:38,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:39,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:39,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 18:30:39,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:39,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 348 [2020-10-12 18:30:39,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:39,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:30:39,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:30:39,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 18:30:39,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:39,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-12 18:30:39,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:39,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:39,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:39,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:39,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 18:30:39,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:39,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 341 [2020-10-12 18:30:39,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:39,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:30:39,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:30:39,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 18:30:39,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:39,771 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-12 18:30:39,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194542943] [2020-10-12 18:30:39,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:30:39,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 18:30:39,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729621167] [2020-10-12 18:30:39,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 18:30:39,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:30:39,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 18:30:39,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-12 18:30:39,777 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand 14 states. [2020-10-12 18:30:40,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:30:40,489 INFO L93 Difference]: Finished difference Result 89 states and 127 transitions. [2020-10-12 18:30:40,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 18:30:40,490 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 59 [2020-10-12 18:30:40,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:30:40,493 INFO L225 Difference]: With dead ends: 89 [2020-10-12 18:30:40,493 INFO L226 Difference]: Without dead ends: 85 [2020-10-12 18:30:40,494 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2020-10-12 18:30:40,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-12 18:30:40,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 63. [2020-10-12 18:30:40,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-12 18:30:40,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 85 transitions. [2020-10-12 18:30:40,532 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 85 transitions. Word has length 59 [2020-10-12 18:30:40,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:30:40,534 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 85 transitions. [2020-10-12 18:30:40,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 18:30:40,535 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 85 transitions. [2020-10-12 18:30:40,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-12 18:30:40,539 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:30:40,539 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:30:40,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 18:30:40,539 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:30:40,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:30:40,540 INFO L82 PathProgramCache]: Analyzing trace with hash -386919423, now seen corresponding path program 1 times [2020-10-12 18:30:40,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:30:40,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [84371384] [2020-10-12 18:30:40,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:30:40,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:40,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:40,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:40,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:40,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:41,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:42,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:45,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:45,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 18:30:45,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 18:30:45,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 18:30:45,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:45,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 18:30:45,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 18:30:45,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-12 18:30:45,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:45,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:30:45,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:45,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:45,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:45,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:30:45,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:30:45,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:30:45,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:45,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:30:45,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:30:45,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:30:45,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:45,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:30:45,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:45,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:45,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:45,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:45,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 18:30:45,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:45,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-12 18:30:45,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:45,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:30:45,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:30:45,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 18:30:45,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:45,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 18:30:45,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:45,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:45,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:45,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:46,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:46,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 18:30:46,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 18:30:46,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-12 18:30:46,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:46,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:30:46,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:30:46,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 18:30:46,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:46,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-12 18:30:46,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:46,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:46,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:46,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:46,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 18:30:46,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:46,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-12 18:30:46,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:46,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:30:46,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:46,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 18:30:46,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:30:46,328 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 118 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-12 18:30:46,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [84371384] [2020-10-12 18:30:46,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:30:46,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 18:30:46,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599882749] [2020-10-12 18:30:46,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 18:30:46,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:30:46,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 18:30:46,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-12 18:30:46,331 INFO L87 Difference]: Start difference. First operand 63 states and 85 transitions. Second operand 10 states. [2020-10-12 18:30:47,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:30:47,056 INFO L93 Difference]: Finished difference Result 176 states and 254 transitions. [2020-10-12 18:30:47,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 18:30:47,056 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-10-12 18:30:47,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:30:47,059 INFO L225 Difference]: With dead ends: 176 [2020-10-12 18:30:47,059 INFO L226 Difference]: Without dead ends: 126 [2020-10-12 18:30:47,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2020-10-12 18:30:47,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-12 18:30:47,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 117. [2020-10-12 18:30:47,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-12 18:30:47,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 171 transitions. [2020-10-12 18:30:47,096 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 171 transitions. Word has length 59 [2020-10-12 18:30:47,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:30:47,096 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 171 transitions. [2020-10-12 18:30:47,096 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 18:30:47,097 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 171 transitions. [2020-10-12 18:30:47,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-12 18:30:47,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:30:47,100 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:30:47,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 18:30:47,100 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:30:47,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:30:47,101 INFO L82 PathProgramCache]: Analyzing trace with hash -808812355, now seen corresponding path program 2 times [2020-10-12 18:30:47,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:30:47,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [607703052] [2020-10-12 18:30:47,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:30:47,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:47,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:47,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:47,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:47,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:48,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:48,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:52,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:52,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 18:30:52,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 18:30:52,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 18:30:52,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:52,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:30:52,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-12 18:30:52,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 18:30:52,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:52,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:30:52,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:52,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:52,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:52,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:30:52,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:30:52,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:30:52,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:52,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:30:52,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:30:52,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:30:52,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:52,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:30:52,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:52,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:52,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:52,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:52,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 18:30:52,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:52,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-12 18:30:52,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:52,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:30:52,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:52,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 18:30:52,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:52,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 18:30:52,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:52,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:52,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:52,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:52,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 18:30:52,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:52,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-12 18:30:52,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:52,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:30:52,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:30:52,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 18:30:52,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:52,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-12 18:30:52,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:52,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:52,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:52,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:52,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 18:30:52,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:52,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-12 18:30:52,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:52,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:30:52,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:52,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 18:30:52,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:52,692 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 26 proven. 112 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-12 18:30:52,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [607703052] [2020-10-12 18:30:52,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:30:52,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 18:30:52,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885734102] [2020-10-12 18:30:52,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 18:30:52,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:30:52,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 18:30:52,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-12 18:30:52,694 INFO L87 Difference]: Start difference. First operand 117 states and 171 transitions. Second operand 13 states. [2020-10-12 18:30:53,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:30:53,301 INFO L93 Difference]: Finished difference Result 325 states and 516 transitions. [2020-10-12 18:30:53,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 18:30:53,301 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 59 [2020-10-12 18:30:53,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:30:53,305 INFO L225 Difference]: With dead ends: 325 [2020-10-12 18:30:53,305 INFO L226 Difference]: Without dead ends: 220 [2020-10-12 18:30:53,309 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=502, Unknown=0, NotChecked=0, Total=650 [2020-10-12 18:30:53,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-12 18:30:53,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 197. [2020-10-12 18:30:53,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-12 18:30:53,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 297 transitions. [2020-10-12 18:30:53,341 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 297 transitions. Word has length 59 [2020-10-12 18:30:53,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:30:53,341 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 297 transitions. [2020-10-12 18:30:53,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 18:30:53,341 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 297 transitions. [2020-10-12 18:30:53,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 18:30:53,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:30:53,344 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:30:53,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 18:30:53,344 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:30:53,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:30:53,345 INFO L82 PathProgramCache]: Analyzing trace with hash -65292490, now seen corresponding path program 4 times [2020-10-12 18:30:53,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:30:53,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1522377061] [2020-10-12 18:30:53,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:30:53,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:53,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:53,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:53,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:53,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:58,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:58,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:58,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 18:30:58,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:30:58,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 18:30:58,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:58,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:30:58,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:30:58,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 18:30:58,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:58,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:30:58,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:58,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:58,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:58,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:30:58,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:30:58,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:30:58,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:58,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:30:58,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:30:58,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:30:58,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:58,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:30:58,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:58,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:58,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:58,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 18:30:58,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:30:58,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-12 18:30:58,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:58,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:30:58,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:58,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 18:30:58,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:58,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 18:30:58,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:58,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:58,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:58,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:58,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 18:30:58,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:58,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-12 18:30:58,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:58,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:30:58,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:58,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 18:30:58,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:58,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-12 18:30:58,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:58,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:58,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:58,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:58,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 18:30:58,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:58,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-12 18:30:58,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:58,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:30:58,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:58,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 18:30:58,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:58,598 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 66 proven. 132 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-12 18:30:58,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1522377061] [2020-10-12 18:30:58,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:30:58,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 18:30:58,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530517150] [2020-10-12 18:30:58,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 18:30:58,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:30:58,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 18:30:58,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 18:30:58,601 INFO L87 Difference]: Start difference. First operand 197 states and 297 transitions. Second operand 8 states. [2020-10-12 18:30:58,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:30:58,785 INFO L93 Difference]: Finished difference Result 390 states and 608 transitions. [2020-10-12 18:30:58,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 18:30:58,786 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 68 [2020-10-12 18:30:58,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:30:58,789 INFO L225 Difference]: With dead ends: 390 [2020-10-12 18:30:58,789 INFO L226 Difference]: Without dead ends: 222 [2020-10-12 18:30:58,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-12 18:30:58,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-10-12 18:30:58,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2020-10-12 18:30:58,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-10-12 18:30:58,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 329 transitions. [2020-10-12 18:30:58,822 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 329 transitions. Word has length 68 [2020-10-12 18:30:58,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:30:58,823 INFO L479 AbstractCegarLoop]: Abstraction has 222 states and 329 transitions. [2020-10-12 18:30:58,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 18:30:58,823 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 329 transitions. [2020-10-12 18:30:58,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-12 18:30:58,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:30:58,827 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:30:58,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 18:30:58,827 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:30:58,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:30:58,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1783214881, now seen corresponding path program 5 times [2020-10-12 18:30:58,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:30:58,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900402211] [2020-10-12 18:30:58,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:30:58,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:58,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:58,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:59,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:00,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:00,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-12 18:31:00,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 18:31:00,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2106 [2020-10-12 18:31:00,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:00,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 18:31:00,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:31:00,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 18:31:00,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:01,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:31:01,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:01,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:01,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:01,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:31:01,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:01,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:31:01,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:01,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:01,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:01,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:01,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:01,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:31:01,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:01,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:01,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:01,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:31:01,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:01,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-12 18:31:01,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:01,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:31:01,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:01,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 18:31:01,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:01,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 18:31:01,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:01,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:01,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:01,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:31:01,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:01,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-12 18:31:01,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:01,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:31:01,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:01,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 18:31:01,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:01,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-12 18:31:01,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:01,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:01,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:01,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:31:01,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:01,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-12 18:31:01,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:01,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:31:01,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:01,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 18:31:01,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:01,631 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 0 proven. 315 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-12 18:31:01,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1900402211] [2020-10-12 18:31:01,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:31:01,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 18:31:01,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67460441] [2020-10-12 18:31:01,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 18:31:01,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:31:01,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 18:31:01,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-10-12 18:31:01,633 INFO L87 Difference]: Start difference. First operand 222 states and 329 transitions. Second operand 16 states. [2020-10-12 18:31:02,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:31:02,554 INFO L93 Difference]: Finished difference Result 381 states and 856 transitions. [2020-10-12 18:31:02,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 18:31:02,554 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 77 [2020-10-12 18:31:02,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:31:02,567 INFO L225 Difference]: With dead ends: 381 [2020-10-12 18:31:02,567 INFO L226 Difference]: Without dead ends: 377 [2020-10-12 18:31:02,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 16 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=529, Unknown=0, NotChecked=0, Total=600 [2020-10-12 18:31:02,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2020-10-12 18:31:02,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 307. [2020-10-12 18:31:02,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2020-10-12 18:31:02,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 513 transitions. [2020-10-12 18:31:02,696 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 513 transitions. Word has length 77 [2020-10-12 18:31:02,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:31:02,698 INFO L479 AbstractCegarLoop]: Abstraction has 307 states and 513 transitions. [2020-10-12 18:31:02,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 18:31:02,698 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 513 transitions. [2020-10-12 18:31:02,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-12 18:31:02,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:31:02,705 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:31:02,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 18:31:02,706 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:31:02,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:31:02,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1103156511, now seen corresponding path program 3 times [2020-10-12 18:31:02,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:31:02,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1431737337] [2020-10-12 18:31:02,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:31:02,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:02,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:02,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:02,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:02,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:03,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:05,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:07,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:07,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-12 18:31:07,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 18:31:07,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 18:31:07,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:07,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 18:31:07,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 18:31:07,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-12 18:31:07,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:31:07,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:31:07,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:07,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:07,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:07,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:31:07,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:07,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:31:07,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:07,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:07,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:07,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:07,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:07,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:31:07,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:07,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:07,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:07,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:07,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:31:07,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:07,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-12 18:31:07,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:07,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:31:07,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:07,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 18:31:07,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:08,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 18:31:08,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:08,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:08,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:08,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:08,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:31:08,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:08,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-12 18:31:08,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:08,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:31:08,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:08,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 18:31:08,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:08,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-12 18:31:08,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:08,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:08,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:08,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:08,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:31:08,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:08,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-12 18:31:08,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:08,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:31:08,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:08,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 18:31:08,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:08,822 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 25 proven. 320 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-12 18:31:08,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1431737337] [2020-10-12 18:31:08,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:31:08,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-12 18:31:08,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363224364] [2020-10-12 18:31:08,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-12 18:31:08,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:31:08,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-12 18:31:08,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2020-10-12 18:31:08,825 INFO L87 Difference]: Start difference. First operand 307 states and 513 transitions. Second operand 26 states. [2020-10-12 18:31:10,504 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2020-10-12 18:31:23,836 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2020-10-12 18:31:29,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:31:29,606 INFO L93 Difference]: Finished difference Result 1179 states and 2843 transitions. [2020-10-12 18:31:29,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2020-10-12 18:31:29,607 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 77 [2020-10-12 18:31:29,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:31:29,625 INFO L225 Difference]: With dead ends: 1179 [2020-10-12 18:31:29,625 INFO L226 Difference]: Without dead ends: 881 [2020-10-12 18:31:29,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17967 ImplicationChecksByTransitivity, 18.7s TimeCoverageRelationStatistics Valid=5343, Invalid=41529, Unknown=0, NotChecked=0, Total=46872 [2020-10-12 18:31:29,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2020-10-12 18:31:29,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 455. [2020-10-12 18:31:29,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2020-10-12 18:31:29,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 881 transitions. [2020-10-12 18:31:29,770 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 881 transitions. Word has length 77 [2020-10-12 18:31:29,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:31:29,771 INFO L479 AbstractCegarLoop]: Abstraction has 455 states and 881 transitions. [2020-10-12 18:31:29,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-12 18:31:29,772 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 881 transitions. [2020-10-12 18:31:29,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-12 18:31:29,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:31:29,783 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:31:29,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 18:31:29,783 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:31:29,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:31:29,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1525049443, now seen corresponding path program 4 times [2020-10-12 18:31:29,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:31:29,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1085261439] [2020-10-12 18:31:29,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:31:29,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:29,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:29,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:29,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:29,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:29,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:30,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:31,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:33,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:34,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:34,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-12 18:31:34,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 18:31:34,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 18:31:34,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:34,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 18:31:34,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 18:31:34,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 18:31:34,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:34,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:31:34,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:34,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:34,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:34,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:31:34,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:34,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:31:34,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:34,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:34,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:34,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:34,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:34,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:31:34,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:34,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:34,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:34,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:35,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:35,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:31:35,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 18:31:35,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 454 [2020-10-12 18:31:35,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:35,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:31:35,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:35,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 18:31:35,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:35,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 18:31:35,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:35,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:35,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:35,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:35,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:36,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:36,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:31:36,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:31:36,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 354 [2020-10-12 18:31:36,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:36,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:31:36,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:36,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 18:31:36,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:36,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-12 18:31:36,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:36,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:36,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:36,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:36,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:31:36,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:36,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-12 18:31:36,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:36,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:31:36,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:36,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 18:31:36,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:36,488 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 15 proven. 258 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-10-12 18:31:36,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1085261439] [2020-10-12 18:31:36,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:31:36,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 18:31:36,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810661204] [2020-10-12 18:31:36,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 18:31:36,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:31:36,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 18:31:36,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-10-12 18:31:36,490 INFO L87 Difference]: Start difference. First operand 455 states and 881 transitions. Second operand 19 states. [2020-10-12 18:31:37,499 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 46 [2020-10-12 18:31:40,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:31:40,729 INFO L93 Difference]: Finished difference Result 1294 states and 2496 transitions. [2020-10-12 18:31:40,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-12 18:31:40,730 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 77 [2020-10-12 18:31:40,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:31:40,740 INFO L225 Difference]: With dead ends: 1294 [2020-10-12 18:31:40,740 INFO L226 Difference]: Without dead ends: 854 [2020-10-12 18:31:40,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=669, Invalid=2411, Unknown=0, NotChecked=0, Total=3080 [2020-10-12 18:31:40,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2020-10-12 18:31:40,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 834. [2020-10-12 18:31:40,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 834 states. [2020-10-12 18:31:40,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1636 transitions. [2020-10-12 18:31:40,863 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1636 transitions. Word has length 77 [2020-10-12 18:31:40,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:31:40,864 INFO L479 AbstractCegarLoop]: Abstraction has 834 states and 1636 transitions. [2020-10-12 18:31:40,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 18:31:40,864 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1636 transitions. [2020-10-12 18:31:40,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-12 18:31:40,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:31:40,879 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:31:40,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 18:31:40,880 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:31:40,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:31:40,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1855601439, now seen corresponding path program 5 times [2020-10-12 18:31:40,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:31:40,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [182566997] [2020-10-12 18:31:40,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:31:40,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:40,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:40,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:40,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:41,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:41,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:41,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:45,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:45,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-12 18:31:45,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 18:31:45,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 18:31:45,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:45,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 18:31:45,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 18:31:45,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 18:31:45,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:45,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:31:45,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:45,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:45,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:45,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:31:45,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:45,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:31:45,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:45,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:45,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:45,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:45,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:45,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:31:45,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:45,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:45,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:46,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:46,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:31:46,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:46,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-12 18:31:46,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:46,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:31:46,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:46,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 18:31:46,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:46,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 18:31:46,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:46,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:46,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:46,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:46,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:31:46,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:46,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-12 18:31:46,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:46,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:31:46,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:46,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 18:31:46,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:46,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-12 18:31:46,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:46,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:46,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:46,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:31:46,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:46,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 18:31:46,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:46,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:46,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 18:31:46,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:46,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:46,522 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 22 proven. 314 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 18:31:46,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [182566997] [2020-10-12 18:31:46,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:31:46,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 18:31:46,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623780356] [2020-10-12 18:31:46,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 18:31:46,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:31:46,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 18:31:46,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-10-12 18:31:46,524 INFO L87 Difference]: Start difference. First operand 834 states and 1636 transitions. Second operand 17 states. [2020-10-12 18:31:47,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:31:47,879 INFO L93 Difference]: Finished difference Result 1962 states and 3820 transitions. [2020-10-12 18:31:47,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 18:31:47,880 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 77 [2020-10-12 18:31:47,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:31:47,893 INFO L225 Difference]: With dead ends: 1962 [2020-10-12 18:31:47,894 INFO L226 Difference]: Without dead ends: 1185 [2020-10-12 18:31:47,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=219, Invalid=903, Unknown=0, NotChecked=0, Total=1122 [2020-10-12 18:31:47,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1185 states. [2020-10-12 18:31:48,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1185 to 1008. [2020-10-12 18:31:48,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1008 states. [2020-10-12 18:31:48,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1895 transitions. [2020-10-12 18:31:48,089 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1895 transitions. Word has length 77 [2020-10-12 18:31:48,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:31:48,090 INFO L479 AbstractCegarLoop]: Abstraction has 1008 states and 1895 transitions. [2020-10-12 18:31:48,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 18:31:48,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1895 transitions. [2020-10-12 18:31:48,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-12 18:31:48,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:31:48,107 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:31:48,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 18:31:48,108 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:31:48,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:31:48,108 INFO L82 PathProgramCache]: Analyzing trace with hash -396429471, now seen corresponding path program 6 times [2020-10-12 18:31:48,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:31:48,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1901139915] [2020-10-12 18:31:48,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:31:48,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:48,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:48,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:48,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:48,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:48,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:48,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:53,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:53,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-12 18:31:53,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 18:31:53,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 18:31:53,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:53,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 18:31:53,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 18:31:53,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 18:31:53,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:53,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:31:53,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:53,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:53,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:53,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:31:53,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:53,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:31:53,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:53,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:53,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:53,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:53,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:53,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:31:53,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:53,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:53,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:53,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:53,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:31:53,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:53,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-12 18:31:53,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:53,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:31:53,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:53,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 18:31:53,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:53,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 18:31:53,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:53,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:53,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:53,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:53,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:31:53,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:53,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-12 18:31:53,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:53,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:31:53,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:53,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 18:31:53,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:53,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-12 18:31:53,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:53,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:53,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:53,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:31:53,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:53,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 18:31:53,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:53,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:53,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 18:31:53,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:53,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:53,694 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 66 proven. 257 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-10-12 18:31:53,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1901139915] [2020-10-12 18:31:53,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:31:53,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 18:31:53,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843773939] [2020-10-12 18:31:53,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 18:31:53,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:31:53,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 18:31:53,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-12 18:31:53,697 INFO L87 Difference]: Start difference. First operand 1008 states and 1895 transitions. Second operand 12 states. [2020-10-12 18:31:54,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:31:54,710 INFO L93 Difference]: Finished difference Result 2038 states and 3326 transitions. [2020-10-12 18:31:54,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 18:31:54,711 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 77 [2020-10-12 18:31:54,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:31:54,723 INFO L225 Difference]: With dead ends: 2038 [2020-10-12 18:31:54,723 INFO L226 Difference]: Without dead ends: 1343 [2020-10-12 18:31:54,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=207, Invalid=495, Unknown=0, NotChecked=0, Total=702 [2020-10-12 18:31:54,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states. [2020-10-12 18:31:54,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 1266. [2020-10-12 18:31:54,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1266 states. [2020-10-12 18:31:54,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1266 states to 1266 states and 2038 transitions. [2020-10-12 18:31:54,909 INFO L78 Accepts]: Start accepts. Automaton has 1266 states and 2038 transitions. Word has length 77 [2020-10-12 18:31:54,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:31:54,909 INFO L479 AbstractCegarLoop]: Abstraction has 1266 states and 2038 transitions. [2020-10-12 18:31:54,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 18:31:54,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1266 states and 2038 transitions. [2020-10-12 18:31:54,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-12 18:31:54,924 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:31:54,924 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 13, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:31:54,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 18:31:54,924 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:31:54,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:31:54,925 INFO L82 PathProgramCache]: Analyzing trace with hash -468816029, now seen corresponding path program 7 times [2020-10-12 18:31:54,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:31:54,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [91661657] [2020-10-12 18:31:54,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:31:54,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:54,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:54,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:55,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:55,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-12 18:31:55,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:55,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-12 18:31:55,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:55,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:31:55,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-12 18:31:55,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 18:31:55,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:55,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:31:55,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:55,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:55,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:55,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:31:55,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:55,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:31:55,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:55,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:55,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:55,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:55,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:55,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:31:55,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:55,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:55,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:55,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:31:55,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:55,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 18:31:55,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:55,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:55,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:55,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:55,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:55,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 18:31:55,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:55,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:55,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:55,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:31:55,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:55,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 18:31:55,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:55,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:55,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:55,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:55,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:55,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-12 18:31:55,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:55,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:55,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:55,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:31:55,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:55,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 18:31:55,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:55,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:55,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 18:31:55,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:55,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:55,270 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2020-10-12 18:31:55,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [91661657] [2020-10-12 18:31:55,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:31:55,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 18:31:55,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378710838] [2020-10-12 18:31:55,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 18:31:55,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:31:55,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 18:31:55,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 18:31:55,272 INFO L87 Difference]: Start difference. First operand 1266 states and 2038 transitions. Second operand 4 states. [2020-10-12 18:31:55,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:31:55,425 INFO L93 Difference]: Finished difference Result 1707 states and 2580 transitions. [2020-10-12 18:31:55,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 18:31:55,426 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 77 [2020-10-12 18:31:55,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:31:55,434 INFO L225 Difference]: With dead ends: 1707 [2020-10-12 18:31:55,434 INFO L226 Difference]: Without dead ends: 1066 [2020-10-12 18:31:55,439 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 18:31:55,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2020-10-12 18:31:55,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1034. [2020-10-12 18:31:55,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1034 states. [2020-10-12 18:31:55,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1598 transitions. [2020-10-12 18:31:55,600 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1598 transitions. Word has length 77 [2020-10-12 18:31:55,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:31:55,600 INFO L479 AbstractCegarLoop]: Abstraction has 1034 states and 1598 transitions. [2020-10-12 18:31:55,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 18:31:55,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1598 transitions. [2020-10-12 18:31:55,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-12 18:31:55,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:31:55,612 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:31:55,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 18:31:55,612 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:31:55,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:31:55,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1860632735, now seen corresponding path program 1 times [2020-10-12 18:31:55,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:31:55,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1719399463] [2020-10-12 18:31:55,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:31:55,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:55,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:55,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:55,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:55,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:55,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:56,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:56,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:56,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:56,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:56,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:58,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:59,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:00,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:00,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:00,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 18:32:00,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 18:32:00,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 18:32:00,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:00,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 18:32:00,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 18:32:00,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 18:32:00,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:00,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:32:00,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:00,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:00,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:00,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:32:00,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:00,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:32:00,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:00,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:00,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:00,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:00,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:00,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:32:00,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:00,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:00,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:00,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:01,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:01,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:32:01,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 18:32:01,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 445 [2020-10-12 18:32:01,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:01,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:32:01,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:01,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 18:32:01,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:01,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 18:32:01,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:01,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:01,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:01,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:01,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:01,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:01,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:01,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:32:01,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:32:01,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 391 [2020-10-12 18:32:01,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:01,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 18:32:01,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:01,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 18:32:01,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:02,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-12 18:32:02,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:02,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:02,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:02,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:02,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:32:02,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:02,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-12 18:32:02,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:02,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:32:02,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:02,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 18:32:02,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:02,869 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 79 proven. 253 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-12 18:32:02,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1719399463] [2020-10-12 18:32:02,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:32:02,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-12 18:32:02,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738474263] [2020-10-12 18:32:02,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-12 18:32:02,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:32:02,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-12 18:32:02,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=730, Unknown=0, NotChecked=0, Total=870 [2020-10-12 18:32:02,871 INFO L87 Difference]: Start difference. First operand 1034 states and 1598 transitions. Second operand 30 states. [2020-10-12 18:32:06,134 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 54 [2020-10-12 18:32:10,642 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 55 [2020-10-12 18:32:11,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:32:11,522 INFO L93 Difference]: Finished difference Result 1924 states and 3312 transitions. [2020-10-12 18:32:11,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2020-10-12 18:32:11,524 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 79 [2020-10-12 18:32:11,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:32:11,534 INFO L225 Difference]: With dead ends: 1924 [2020-10-12 18:32:11,534 INFO L226 Difference]: Without dead ends: 1135 [2020-10-12 18:32:11,547 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 6 SyntacticMatches, 4 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3728 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=2091, Invalid=10565, Unknown=0, NotChecked=0, Total=12656 [2020-10-12 18:32:11,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1135 states. [2020-10-12 18:32:11,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1135 to 1005. [2020-10-12 18:32:11,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1005 states. [2020-10-12 18:32:11,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1005 states to 1005 states and 1591 transitions. [2020-10-12 18:32:11,679 INFO L78 Accepts]: Start accepts. Automaton has 1005 states and 1591 transitions. Word has length 79 [2020-10-12 18:32:11,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:32:11,680 INFO L479 AbstractCegarLoop]: Abstraction has 1005 states and 1591 transitions. [2020-10-12 18:32:11,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-12 18:32:11,680 INFO L276 IsEmpty]: Start isEmpty. Operand 1005 states and 1591 transitions. [2020-10-12 18:32:11,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-12 18:32:11,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:32:11,694 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:32:11,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 18:32:11,694 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:32:11,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:32:11,695 INFO L82 PathProgramCache]: Analyzing trace with hash 322603619, now seen corresponding path program 2 times [2020-10-12 18:32:11,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:32:11,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [883924011] [2020-10-12 18:32:11,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:32:11,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:11,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:11,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:11,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:11,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:12,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:12,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:12,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:14,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:14,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:16,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:16,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:16,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:16,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 18:32:16,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 18:32:16,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 18:32:16,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:16,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 18:32:16,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 18:32:16,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-12 18:32:16,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:16,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:32:16,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:16,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:16,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:16,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:32:16,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:16,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:32:16,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:16,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:16,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:16,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:16,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:16,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:32:16,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:16,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:16,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:16,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:17,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:17,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:32:17,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 18:32:17,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 438 [2020-10-12 18:32:17,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:17,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:32:17,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:17,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 18:32:17,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:17,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 18:32:17,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:17,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:17,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:17,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:17,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:17,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:17,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:17,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:18,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:18,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:32:18,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 18:32:18,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 564 [2020-10-12 18:32:18,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:18,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 18:32:18,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:18,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 18:32:18,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:18,752 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-10-12 18:32:19,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-12 18:32:19,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:19,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:19,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:19,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:19,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:32:19,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:19,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-12 18:32:19,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:19,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:32:19,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:19,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 18:32:19,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:19,799 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 40 proven. 285 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-12 18:32:19,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [883924011] [2020-10-12 18:32:19,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:32:19,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-12 18:32:19,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294381485] [2020-10-12 18:32:19,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-12 18:32:19,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:32:19,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-12 18:32:19,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=933, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 18:32:19,801 INFO L87 Difference]: Start difference. First operand 1005 states and 1591 transitions. Second operand 33 states. [2020-10-12 18:32:20,073 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 48 [2020-10-12 18:32:20,246 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 47 [2020-10-12 18:32:20,415 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 46 [2020-10-12 18:32:20,801 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 49 [2020-10-12 18:32:21,144 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 53 [2020-10-12 18:32:21,505 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 56 [2020-10-12 18:32:21,764 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 59 [2020-10-12 18:32:22,071 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 44 [2020-10-12 18:32:22,244 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 57 [2020-10-12 18:32:24,062 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 62 [2020-10-12 18:32:24,823 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 52 [2020-10-12 18:32:24,996 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 52 [2020-10-12 18:32:25,203 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 59 [2020-10-12 18:32:25,383 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 55 [2020-10-12 18:32:25,608 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 63 [2020-10-12 18:32:25,785 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 59 [2020-10-12 18:32:26,702 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 50 [2020-10-12 18:32:26,902 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 50 [2020-10-12 18:32:27,070 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 48 [2020-10-12 18:32:27,253 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 48 [2020-10-12 18:32:27,410 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 52 [2020-10-12 18:32:27,593 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 52 [2020-10-12 18:32:27,772 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 50 [2020-10-12 18:32:27,950 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 39 [2020-10-12 18:32:28,132 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 43 [2020-10-12 18:32:28,401 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 44 [2020-10-12 18:32:28,598 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 53 [2020-10-12 18:32:28,924 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 49 [2020-10-12 18:32:29,206 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 49 [2020-10-12 18:32:29,394 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 58 [2020-10-12 18:32:29,564 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 47 [2020-10-12 18:32:29,753 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 52 [2020-10-12 18:32:30,046 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 52 [2020-10-12 18:32:30,248 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 61 [2020-10-12 18:32:30,416 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 51 [2020-10-12 18:32:30,621 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 53 [2020-10-12 18:32:30,893 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 54 [2020-10-12 18:32:31,108 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 61 [2020-10-12 18:32:31,337 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 50 [2020-10-12 18:32:31,561 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 53 [2020-10-12 18:32:31,748 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 53 [2020-10-12 18:32:32,282 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 62 [2020-10-12 18:32:32,476 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 51 [2020-10-12 18:32:32,671 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 58 [2020-10-12 18:32:33,088 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 67 [2020-10-12 18:32:33,291 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 56 [2020-10-12 18:32:33,478 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 62 [2020-10-12 18:32:33,640 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-12 18:32:34,056 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 70 [2020-10-12 18:32:34,270 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 60 [2020-10-12 18:32:34,527 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 59 [2020-10-12 18:32:34,849 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 67 [2020-10-12 18:32:35,349 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 61 [2020-10-12 18:32:35,627 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 70 [2020-10-12 18:32:36,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:32:36,977 INFO L93 Difference]: Finished difference Result 1615 states and 2554 transitions. [2020-10-12 18:32:36,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2020-10-12 18:32:36,979 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 79 [2020-10-12 18:32:36,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:32:36,990 INFO L225 Difference]: With dead ends: 1615 [2020-10-12 18:32:36,990 INFO L226 Difference]: Without dead ends: 1379 [2020-10-12 18:32:36,995 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 6 SyntacticMatches, 4 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4263 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=2343, Invalid=11463, Unknown=0, NotChecked=0, Total=13806 [2020-10-12 18:32:36,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1379 states. [2020-10-12 18:32:37,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1379 to 1139. [2020-10-12 18:32:37,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2020-10-12 18:32:37,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1918 transitions. [2020-10-12 18:32:37,154 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1918 transitions. Word has length 79 [2020-10-12 18:32:37,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:32:37,154 INFO L479 AbstractCegarLoop]: Abstraction has 1139 states and 1918 transitions. [2020-10-12 18:32:37,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-12 18:32:37,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1918 transitions. [2020-10-12 18:32:37,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-12 18:32:37,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:32:37,169 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:32:37,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 18:32:37,169 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:32:37,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:32:37,170 INFO L82 PathProgramCache]: Analyzing trace with hash -391677409, now seen corresponding path program 3 times [2020-10-12 18:32:37,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:32:37,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [923109897] [2020-10-12 18:32:37,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:32:37,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:37,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:37,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:37,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:37,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:37,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:37,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:37,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:37,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:38,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:39,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:39,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:39,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:39,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:41,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:41,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:41,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:41,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:41,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:42,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:42,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:42,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 18:32:42,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-12 18:32:42,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 18:32:42,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:42,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 18:32:42,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 18:32:42,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 18:32:42,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:42,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:32:42,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:42,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:42,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:42,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:32:42,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:42,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:32:42,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:42,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:42,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:42,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:42,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:42,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:32:42,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:42,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:42,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:42,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:42,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:42,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:32:42,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 18:32:42,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 410 [2020-10-12 18:32:42,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:42,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 18:32:42,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:42,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 18:32:42,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:32:42,941 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 21 [2020-10-12 18:32:43,213 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 32 [2020-10-12 18:32:43,520 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 23 [2020-10-12 18:32:44,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 18:32:44,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:44,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:44,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:44,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:44,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:44,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:44,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:44,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:32:44,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:32:44,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 598 [2020-10-12 18:32:44,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:44,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 18:32:44,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:44,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 18:32:44,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:45,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-12 18:32:45,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:45,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:45,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:45,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:45,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:32:45,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:45,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-12 18:32:45,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:45,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:32:45,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:45,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 18:32:45,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:46,193 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 22 proven. 330 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-12 18:32:46,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [923109897] [2020-10-12 18:32:46,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:32:46,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-12 18:32:46,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357430024] [2020-10-12 18:32:46,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-12 18:32:46,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:32:46,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-12 18:32:46,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1085, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 18:32:46,196 INFO L87 Difference]: Start difference. First operand 1139 states and 1918 transitions. Second operand 35 states. [2020-10-12 18:32:46,607 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 52 [2020-10-12 18:32:46,879 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 51 [2020-10-12 18:32:47,116 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 44 [2020-10-12 18:32:47,356 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 34 [2020-10-12 18:32:47,564 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 46 [2020-10-12 18:32:47,757 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 39 [2020-10-12 18:32:47,980 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 50 [2020-10-12 18:32:48,267 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 45 [2020-10-12 18:32:48,539 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 51 [2020-10-12 18:32:48,775 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 55 [2020-10-12 18:32:49,076 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 46 [2020-10-12 18:32:49,311 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 48 [2020-10-12 18:32:49,760 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 56 [2020-10-12 18:32:50,132 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 43 [2020-10-12 18:32:50,338 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2020-10-12 18:32:50,494 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 48 [2020-10-12 18:32:50,657 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 51 [2020-10-12 18:32:50,901 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 44 [2020-10-12 18:32:51,129 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 49 [2020-10-12 18:32:51,362 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 55 [2020-10-12 18:32:51,593 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 57 [2020-10-12 18:32:51,790 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 49 [2020-10-12 18:32:51,962 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 52 [2020-10-12 18:32:52,496 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2020-10-12 18:32:53,674 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 49 [2020-10-12 18:32:54,020 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 48 [2020-10-12 18:32:54,235 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 51 [2020-10-12 18:32:54,418 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2020-10-12 18:32:54,598 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2020-10-12 18:32:54,764 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2020-10-12 18:32:55,131 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 50 [2020-10-12 18:32:55,314 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2020-10-12 18:32:55,897 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 49 [2020-10-12 18:32:56,130 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 52 [2020-10-12 18:32:56,356 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 52 [2020-10-12 18:32:56,572 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 54 [2020-10-12 18:32:56,793 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 55 [2020-10-12 18:32:56,996 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 58 [2020-10-12 18:32:57,205 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2020-10-12 18:32:57,406 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2020-10-12 18:32:57,599 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2020-10-12 18:32:57,789 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-12 18:32:57,965 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-12 18:32:58,133 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-12 18:32:58,379 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 52 [2020-10-12 18:32:58,638 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 56 [2020-10-12 18:32:59,566 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 58 [2020-10-12 18:32:59,791 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2020-10-12 18:33:00,321 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2020-10-12 18:33:01,844 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 65 [2020-10-12 18:33:02,123 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 60 [2020-10-12 18:33:02,379 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 64 [2020-10-12 18:33:02,628 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 57 [2020-10-12 18:33:02,893 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2020-10-12 18:33:03,185 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 68 [2020-10-12 18:33:03,515 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-10-12 18:33:03,820 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 77 [2020-10-12 18:33:04,156 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 64 [2020-10-12 18:33:04,646 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 75 [2020-10-12 18:33:04,893 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 66 [2020-10-12 18:33:05,245 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 78 [2020-10-12 18:33:05,480 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 58 [2020-10-12 18:33:05,852 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 78 [2020-10-12 18:33:06,139 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 75 [2020-10-12 18:33:06,563 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 87 [2020-10-12 18:33:08,781 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 50 [2020-10-12 18:33:09,070 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 49 [2020-10-12 18:33:09,278 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 42 [2020-10-12 18:33:09,593 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 43 [2020-10-12 18:33:09,835 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 43 [2020-10-12 18:33:10,085 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 46 [2020-10-12 18:33:10,349 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 47 [2020-10-12 18:33:10,716 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 51 [2020-10-12 18:33:11,011 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 48 [2020-10-12 18:33:11,377 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 52 [2020-10-12 18:33:11,720 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 52 [2020-10-12 18:33:12,141 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 54 [2020-10-12 18:33:12,540 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 53 [2020-10-12 18:33:13,037 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 55 [2020-10-12 18:33:13,360 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 53 [2020-10-12 18:33:13,585 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 57 [2020-10-12 18:33:13,889 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 51 [2020-10-12 18:33:14,314 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 60 [2020-10-12 18:33:14,680 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 54 [2020-10-12 18:33:14,965 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 58 [2020-10-12 18:33:15,268 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 52 [2020-10-12 18:33:15,690 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 61 [2020-10-12 18:33:16,177 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2020-10-12 18:33:16,540 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 62 [2020-10-12 18:33:16,778 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 59 [2020-10-12 18:33:17,029 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2020-10-12 18:33:17,313 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 66 [2020-10-12 18:33:17,603 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 60 [2020-10-12 18:33:17,920 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 64 [2020-10-12 18:33:18,342 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 58 [2020-10-12 18:33:18,636 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2020-10-12 18:33:18,962 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 61 [2020-10-12 18:33:19,312 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 54 [2020-10-12 18:33:19,623 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 67 [2020-10-12 18:33:20,098 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 63 [2020-10-12 18:33:20,439 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2020-10-12 18:33:20,877 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 65 [2020-10-12 18:33:21,094 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2020-10-12 18:33:21,434 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2020-10-12 18:33:21,760 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 55 [2020-10-12 18:33:22,011 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 52 [2020-10-12 18:33:22,408 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 64 [2020-10-12 18:33:22,826 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 63 [2020-10-12 18:33:23,158 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 60 [2020-10-12 18:33:23,706 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 69 [2020-10-12 18:33:24,110 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 64 [2020-10-12 18:33:24,563 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 66 [2020-10-12 18:33:24,854 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2020-10-12 18:33:25,221 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 67 [2020-10-12 18:33:25,535 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 63 [2020-10-12 18:33:26,054 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 70 [2020-10-12 18:33:26,395 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-12 18:33:26,837 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 62 [2020-10-12 18:33:27,511 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 69 [2020-10-12 18:33:27,886 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 66 [2020-10-12 18:33:28,561 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 61 [2020-10-12 18:33:29,047 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 72 [2020-10-12 18:33:29,941 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 72 [2020-10-12 18:33:32,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:33:32,881 INFO L93 Difference]: Finished difference Result 1789 states and 2881 transitions. [2020-10-12 18:33:32,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2020-10-12 18:33:32,885 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 79 [2020-10-12 18:33:32,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:33:32,895 INFO L225 Difference]: With dead ends: 1789 [2020-10-12 18:33:32,895 INFO L226 Difference]: Without dead ends: 1408 [2020-10-12 18:33:32,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13647 ImplicationChecksByTransitivity, 38.2s TimeCoverageRelationStatistics Valid=3545, Invalid=34675, Unknown=0, NotChecked=0, Total=38220 [2020-10-12 18:33:32,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1408 states. [2020-10-12 18:33:33,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1408 to 1272. [2020-10-12 18:33:33,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1272 states. [2020-10-12 18:33:33,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 2214 transitions. [2020-10-12 18:33:33,107 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 2214 transitions. Word has length 79 [2020-10-12 18:33:33,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:33:33,108 INFO L479 AbstractCegarLoop]: Abstraction has 1272 states and 2214 transitions. [2020-10-12 18:33:33,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-12 18:33:33,108 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 2214 transitions. [2020-10-12 18:33:33,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-12 18:33:33,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:33:33,121 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 13, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:33:33,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 18:33:33,121 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:33:33,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:33:33,122 INFO L82 PathProgramCache]: Analyzing trace with hash 2019379045, now seen corresponding path program 4 times [2020-10-12 18:33:33,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:33:33,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1573557838] [2020-10-12 18:33:33,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:33:33,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:33,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:33,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:33,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:33,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:33,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:33,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:38,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:38,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 18:33:38,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 18:33:38,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 18:33:38,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:38,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 18:33:38,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 18:33:38,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 18:33:38,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:38,330 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 22 [2020-10-12 18:33:38,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:33:38,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:38,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:38,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:38,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:33:38,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:33:38,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:33:38,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:38,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:33:38,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:33:38,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:33:38,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:38,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:33:38,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:38,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:38,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:38,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:38,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:33:38,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:33:38,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-12 18:33:38,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:38,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:33:38,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:33:38,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 18:33:38,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:39,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 18:33:39,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:39,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:39,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:39,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:39,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:39,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:33:39,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 18:33:39,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 313 [2020-10-12 18:33:39,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:39,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:33:39,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:33:39,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 18:33:39,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:33:39,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-12 18:33:39,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:39,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:39,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:39,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:40,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:40,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:33:40,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 18:33:40,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 442 [2020-10-12 18:33:40,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:40,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:33:40,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:40,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 18:33:40,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:41,324 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 61 proven. 301 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-12 18:33:41,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1573557838] [2020-10-12 18:33:41,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:33:41,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-12 18:33:41,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150886565] [2020-10-12 18:33:41,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-12 18:33:41,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:33:41,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-12 18:33:41,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=635, Unknown=0, NotChecked=0, Total=756 [2020-10-12 18:33:41,326 INFO L87 Difference]: Start difference. First operand 1272 states and 2214 transitions. Second operand 28 states. [2020-10-12 18:33:43,233 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 39 [2020-10-12 18:33:43,517 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 42 [2020-10-12 18:33:44,376 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 36 [2020-10-12 18:33:44,560 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2020-10-12 18:33:44,820 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 47 [2020-10-12 18:33:46,852 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2020-10-12 18:33:47,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:33:47,910 INFO L93 Difference]: Finished difference Result 1330 states and 2421 transitions. [2020-10-12 18:33:47,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-12 18:33:47,912 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 79 [2020-10-12 18:33:47,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:33:47,923 INFO L225 Difference]: With dead ends: 1330 [2020-10-12 18:33:47,923 INFO L226 Difference]: Without dead ends: 1326 [2020-10-12 18:33:47,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1207 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=762, Invalid=4068, Unknown=0, NotChecked=0, Total=4830 [2020-10-12 18:33:47,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2020-10-12 18:33:48,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 1314. [2020-10-12 18:33:48,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1314 states. [2020-10-12 18:33:48,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1314 states to 1314 states and 2248 transitions. [2020-10-12 18:33:48,158 INFO L78 Accepts]: Start accepts. Automaton has 1314 states and 2248 transitions. Word has length 79 [2020-10-12 18:33:48,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:33:48,159 INFO L479 AbstractCegarLoop]: Abstraction has 1314 states and 2248 transitions. [2020-10-12 18:33:48,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-12 18:33:48,159 INFO L276 IsEmpty]: Start isEmpty. Operand 1314 states and 2248 transitions. [2020-10-12 18:33:48,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-12 18:33:48,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:33:48,177 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 12, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:33:48,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 18:33:48,177 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:33:48,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:33:48,178 INFO L82 PathProgramCache]: Analyzing trace with hash -2017422813, now seen corresponding path program 5 times [2020-10-12 18:33:48,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:33:48,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907250835] [2020-10-12 18:33:48,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:33:48,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:48,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:48,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:48,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:48,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:48,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:49,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:49,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:49,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:49,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:53,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:53,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 18:33:53,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 18:33:53,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 18:33:53,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:53,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 18:33:53,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 18:33:53,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 18:33:53,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:53,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:33:53,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:53,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:53,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:53,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:33:53,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:33:53,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:33:53,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:53,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:33:53,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:33:53,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:33:53,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:53,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:33:53,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:53,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:53,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:53,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:53,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:33:53,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:33:53,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 449 [2020-10-12 18:33:53,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:53,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:33:53,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:33:53,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 18:33:53,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:33:54,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 18:33:54,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:54,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:54,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:54,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:54,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:54,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:54,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:54,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:33:54,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:33:54,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 672 [2020-10-12 18:33:54,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:54,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:33:54,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:33:54,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 18:33:54,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:55,138 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 26 [2020-10-12 18:33:55,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-12 18:33:55,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:55,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:55,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:55,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:55,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:33:55,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:33:55,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-12 18:33:55,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:55,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:33:55,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:55,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 18:33:55,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:56,510 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 7 proven. 320 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-12 18:33:56,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907250835] [2020-10-12 18:33:56,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:33:56,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-12 18:33:56,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585582728] [2020-10-12 18:33:56,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-12 18:33:56,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:33:56,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-12 18:33:56,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=560, Unknown=0, NotChecked=0, Total=650 [2020-10-12 18:33:56,512 INFO L87 Difference]: Start difference. First operand 1314 states and 2248 transitions. Second operand 26 states. [2020-10-12 18:33:57,642 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 40 [2020-10-12 18:33:58,103 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 44 [2020-10-12 18:33:58,803 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 40 [2020-10-12 18:33:59,277 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 44 [2020-10-12 18:33:59,965 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 41 [2020-10-12 18:34:00,150 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 33 [2020-10-12 18:34:00,517 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2020-10-12 18:34:00,701 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2020-10-12 18:34:00,979 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2020-10-12 18:34:01,501 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 48 [2020-10-12 18:34:01,708 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-10-12 18:34:01,937 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 43 [2020-10-12 18:34:02,218 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 46 [2020-10-12 18:34:02,426 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-10-12 18:34:02,627 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-10-12 18:34:03,093 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-10-12 18:34:03,471 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 40 [2020-10-12 18:34:04,685 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 39 [2020-10-12 18:34:04,895 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2020-10-12 18:34:05,444 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 40 [2020-10-12 18:34:05,643 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2020-10-12 18:34:05,825 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 43 [2020-10-12 18:34:06,036 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2020-10-12 18:34:06,770 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 39 [2020-10-12 18:34:06,964 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2020-10-12 18:34:07,155 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2020-10-12 18:34:07,495 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2020-10-12 18:34:07,986 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 35 [2020-10-12 18:34:08,215 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 46 [2020-10-12 18:34:09,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:34:09,426 INFO L93 Difference]: Finished difference Result 1618 states and 2655 transitions. [2020-10-12 18:34:09,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2020-10-12 18:34:09,431 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 79 [2020-10-12 18:34:09,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:34:09,443 INFO L225 Difference]: With dead ends: 1618 [2020-10-12 18:34:09,443 INFO L226 Difference]: Without dead ends: 1376 [2020-10-12 18:34:09,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2178 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=1098, Invalid=7092, Unknown=0, NotChecked=0, Total=8190 [2020-10-12 18:34:09,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2020-10-12 18:34:09,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1296. [2020-10-12 18:34:09,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1296 states. [2020-10-12 18:34:09,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1296 states to 1296 states and 2209 transitions. [2020-10-12 18:34:09,671 INFO L78 Accepts]: Start accepts. Automaton has 1296 states and 2209 transitions. Word has length 79 [2020-10-12 18:34:09,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:34:09,671 INFO L479 AbstractCegarLoop]: Abstraction has 1296 states and 2209 transitions. [2020-10-12 18:34:09,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-12 18:34:09,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1296 states and 2209 transitions. [2020-10-12 18:34:09,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-12 18:34:09,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:34:09,681 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:34:09,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 18:34:09,682 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:34:09,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:34:09,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1804291231, now seen corresponding path program 6 times [2020-10-12 18:34:09,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:34:09,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [514214013] [2020-10-12 18:34:09,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:34:09,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:09,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:09,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:09,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:09,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:09,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:10,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking...