/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 SingleStatement --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=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/Ackermann04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:11:33,932 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:11:33,936 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:11:33,983 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:11:33,985 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:11:33,996 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:11:33,997 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:11:34,001 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:11:34,004 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:11:34,006 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:11:34,008 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:11:34,010 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:11:34,010 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:11:34,015 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:11:34,018 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:11:34,020 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:11:34,021 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:11:34,022 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:11:34,024 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:11:34,032 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:11:34,034 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:11:34,035 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:11:34,036 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:11:34,037 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:11:34,042 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:11:34,042 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:11:34,042 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:11:34,046 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:11:34,046 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:11:34,049 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:11:34,049 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:11:34,051 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:11:34,052 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:11:34,052 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:11:34,054 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:11:34,054 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:11:34,055 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:11:34,056 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:11:34,056 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:11:34,057 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:11:34,059 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:11:34,060 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 [2020-09-24 18:11:34,110 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:11:34,110 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:11:34,112 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:11:34,112 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:11:34,113 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:11:34,113 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:11:34,113 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:11:34,114 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:11:34,114 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:11:34,114 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:11:34,115 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:11:34,115 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:11:34,116 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:11:34,116 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:11:34,116 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:11:34,116 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:11:34,117 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:11:34,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:11:34,117 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:11:34,117 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:11:34,118 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:11:34,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:11:34,118 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:11:34,118 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:11:34,119 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:11:34,119 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:11:34,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:11:34,119 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:11:34,119 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:11:34,120 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 -> SingleStatement 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=SMALLEST;log-additional-information=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=SMALLEST;log-additional-information=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=SMALLEST;log-additional-information=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=SMALLEST;log-additional-information=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=SMALLEST;log-additional-information=true; [2020-09-24 18:11:34,584 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:11:34,610 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:11:34,616 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:11:34,619 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:11:34,619 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:11:34,621 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Ackermann04.c [2020-09-24 18:11:34,711 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a94b62960/6f6236d559624c228bae15d987969a8f/FLAG540230b58 [2020-09-24 18:11:35,228 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:11:35,229 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Ackermann04.c [2020-09-24 18:11:35,237 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a94b62960/6f6236d559624c228bae15d987969a8f/FLAG540230b58 [2020-09-24 18:11:35,572 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a94b62960/6f6236d559624c228bae15d987969a8f [2020-09-24 18:11:35,588 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:11:35,594 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:11:35,595 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:11:35,596 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:11:35,600 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:11:35,601 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:11:35" (1/1) ... [2020-09-24 18:11:35,606 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f80c2a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:35, skipping insertion in model container [2020-09-24 18:11:35,606 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:11:35" (1/1) ... [2020-09-24 18:11:35,615 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:11:35,639 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:11:35,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:11:35,884 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:11:35,903 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:11:35,920 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:11:35,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:35 WrapperNode [2020-09-24 18:11:35,920 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:11:35,921 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:11:35,921 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:11:35,922 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:11:35,935 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:35" (1/1) ... [2020-09-24 18:11:35,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:35" (1/1) ... [2020-09-24 18:11:35,941 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:35" (1/1) ... [2020-09-24 18:11:35,942 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:35" (1/1) ... [2020-09-24 18:11:35,946 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:35" (1/1) ... [2020-09-24 18:11:35,948 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:35" (1/1) ... [2020-09-24 18:11:35,950 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:35" (1/1) ... [2020-09-24 18:11:35,952 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:11:35,952 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:11:35,953 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:11:35,953 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:11:35,954 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:35" (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 [2020-09-24 18:11:36,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:11:36,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:11:36,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2020-09-24 18:11:36,118 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:11:36,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:11:36,119 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:11:36,119 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2020-09-24 18:11:36,119 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:11:36,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:11:36,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:11:36,392 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:11:36,393 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 18:11:36,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:11:36 BoogieIcfgContainer [2020-09-24 18:11:36,399 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:11:36,401 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:11:36,401 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:11:36,405 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:11:36,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:11:35" (1/3) ... [2020-09-24 18:11:36,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47812473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:11:36, skipping insertion in model container [2020-09-24 18:11:36,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:35" (2/3) ... [2020-09-24 18:11:36,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47812473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:11:36, skipping insertion in model container [2020-09-24 18:11:36,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:11:36" (3/3) ... [2020-09-24 18:11:36,426 INFO L109 eAbstractionObserver]: Analyzing ICFG Ackermann04.c [2020-09-24 18:11:36,448 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:11:36,460 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:11:36,481 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:11:36,511 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:11:36,511 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:11:36,511 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:11:36,511 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:11:36,512 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:11:36,512 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:11:36,512 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:11:36,512 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:11:36,532 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-09-24 18:11:36,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-24 18:11:36,540 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:11:36,541 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:11:36,542 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:11:36,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:11:36,548 INFO L82 PathProgramCache]: Analyzing trace with hash -852610024, now seen corresponding path program 1 times [2020-09-24 18:11:36,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:11:36,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019022528] [2020-09-24 18:11:36,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:11:36,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:36,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:36,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:36,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 18:11:36,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:36,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-09-24 18:11:36,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:36,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:11:36,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 18:11:36,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 18:11:36,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-24 18:11:37,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:11:37,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:37,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:37,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:37,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:11:37,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:37,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:11:37,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:37,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:37,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:37,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:37,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:11:37,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 18:11:37,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:37,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:37,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:37,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:11:37,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:37,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 18:11:37,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:37,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:11:37,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:37,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:11:37,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:11:37,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:11:37,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1019022528] [2020-09-24 18:11:37,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:11:37,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:11:37,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862017500] [2020-09-24 18:11:37,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:11:37,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:11:37,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:11:37,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:11:37,147 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 5 states. [2020-09-24 18:11:37,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:11:37,321 INFO L93 Difference]: Finished difference Result 88 states and 110 transitions. [2020-09-24 18:11:37,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:11:37,324 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-09-24 18:11:37,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:11:37,341 INFO L225 Difference]: With dead ends: 88 [2020-09-24 18:11:37,341 INFO L226 Difference]: Without dead ends: 45 [2020-09-24 18:11:37,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:11:37,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-24 18:11:37,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-09-24 18:11:37,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-24 18:11:37,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2020-09-24 18:11:37,414 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 24 [2020-09-24 18:11:37,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:11:37,415 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2020-09-24 18:11:37,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:11:37,415 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2020-09-24 18:11:37,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 18:11:37,419 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:11:37,419 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:11:37,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:11:37,420 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:11:37,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:11:37,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1574290279, now seen corresponding path program 1 times [2020-09-24 18:11:37,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:11:37,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [62068455] [2020-09-24 18:11:37,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:11:37,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:37,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:37,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:37,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:37,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 18:11:37,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:11:37,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 409 [2020-09-24 18:11:37,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:37,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:11:37,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 18:11:37,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 18:11:37,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:11:37,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:11:37,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:37,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:37,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:37,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:11:37,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:37,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:11:37,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:37,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:37,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:37,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:37,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 13 [2020-09-24 18:11:37,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 18:11:37,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:37,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:37,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:37,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 18:11:37,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:37,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-24 18:11:37,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:37,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:11:37,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:37,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 18:11:37,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:37,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:11:37,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:37,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:37,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:37,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:11:37,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:37,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:11:37,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:37,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:11:37,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:37,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:11:37,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:38,003 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 18:11:38,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [62068455] [2020-09-24 18:11:38,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:11:38,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:11:38,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140704727] [2020-09-24 18:11:38,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:11:38,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:11:38,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:11:38,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:11:38,010 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 5 states. [2020-09-24 18:11:38,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:11:38,129 INFO L93 Difference]: Finished difference Result 83 states and 108 transitions. [2020-09-24 18:11:38,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:11:38,130 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-09-24 18:11:38,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:11:38,133 INFO L225 Difference]: With dead ends: 83 [2020-09-24 18:11:38,133 INFO L226 Difference]: Without dead ends: 47 [2020-09-24 18:11:38,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:11:38,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-24 18:11:38,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-09-24 18:11:38,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-24 18:11:38,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 56 transitions. [2020-09-24 18:11:38,156 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 56 transitions. Word has length 34 [2020-09-24 18:11:38,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:11:38,158 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 56 transitions. [2020-09-24 18:11:38,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:11:38,158 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 56 transitions. [2020-09-24 18:11:38,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-24 18:11:38,161 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:11:38,162 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:11:38,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:11:38,162 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:11:38,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:11:38,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1685750542, now seen corresponding path program 1 times [2020-09-24 18:11:38,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:11:38,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [396078916] [2020-09-24 18:11:38,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:11:38,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:38,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:38,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:38,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:41,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:41,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 18:11:41,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:11:41,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3285 [2020-09-24 18:11:41,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:41,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:11:41,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 18:11:41,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-24 18:11:41,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:11:41,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:11:41,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:41,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:41,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:41,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:11:41,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:41,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:11:41,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:41,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:41,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:41,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:41,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:11:41,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 18:11:41,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:41,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:41,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:42,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:42,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 18:11:42,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:11:42,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 523 [2020-09-24 18:11:42,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:42,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:11:42,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:42,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 18:11:42,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:42,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:11:42,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:42,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:42,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:42,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 18:11:42,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:42,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 18:11:42,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:42,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:11:42,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:42,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 18:11:42,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:42,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:11:42,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:42,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:42,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:42,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:11:42,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:42,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:11:42,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:42,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:42,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:42,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:42,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:42,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 18:11:42,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:42,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:42,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:42,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:11:42,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:42,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 18:11:42,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:42,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:11:42,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:42,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:11:42,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-24 18:11:42,240 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-24 18:11:42,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [396078916] [2020-09-24 18:11:42,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:11:42,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:11:42,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729386259] [2020-09-24 18:11:42,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:11:42,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:11:42,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:11:42,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:11:42,246 INFO L87 Difference]: Start difference. First operand 47 states and 56 transitions. Second operand 7 states. [2020-09-24 18:11:42,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:11:42,440 INFO L93 Difference]: Finished difference Result 72 states and 94 transitions. [2020-09-24 18:11:42,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 18:11:42,441 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 53 [2020-09-24 18:11:42,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:11:42,454 INFO L225 Difference]: With dead ends: 72 [2020-09-24 18:11:42,454 INFO L226 Difference]: Without dead ends: 66 [2020-09-24 18:11:42,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-24 18:11:42,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-24 18:11:42,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-09-24 18:11:42,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-24 18:11:42,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 88 transitions. [2020-09-24 18:11:42,488 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 88 transitions. Word has length 53 [2020-09-24 18:11:42,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:11:42,490 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 88 transitions. [2020-09-24 18:11:42,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:11:42,490 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 88 transitions. [2020-09-24 18:11:42,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-09-24 18:11:42,501 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:11:42,504 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:11:42,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:11:42,505 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:11:42,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:11:42,505 INFO L82 PathProgramCache]: Analyzing trace with hash 990403329, now seen corresponding path program 2 times [2020-09-24 18:11:42,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:11:42,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2043244638] [2020-09-24 18:11:42,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:11:42,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:42,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:42,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:46,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:46,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-24 18:11:46,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:11:46,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3625 [2020-09-24 18:11:46,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:46,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:11:46,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 18:11:46,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-24 18:11:46,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:46,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:11:46,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:46,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:46,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:46,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:11:46,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:46,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:11:46,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:46,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:46,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:46,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:46,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:46,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 18:11:46,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:46,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:46,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:48,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:48,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-24 18:11:48,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:11:48,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2756 [2020-09-24 18:11:48,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:48,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:11:48,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:48,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-24 18:11:48,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:49,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:11:49,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:49,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:49,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:49,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 18:11:49,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:49,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-24 18:11:49,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:49,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:11:49,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:49,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-24 18:11:49,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:11:49,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:11:49,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:49,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:49,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:49,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 18:11:49,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:49,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-24 18:11:49,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:49,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:11:49,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:49,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-24 18:11:49,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:11:49,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:11:49,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:49,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:49,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:49,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 18:11:49,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:49,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:11:49,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:49,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:49,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:49,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:49,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:11:49,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:11:49,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:49,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:49,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:49,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:11:49,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:49,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:11:49,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:49,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:49,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:49,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:49,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:11:49,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 18:11:49,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:49,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:49,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:49,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:11:49,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:49,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:11:49,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:49,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:49,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:49,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:49,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:11:49,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 18:11:49,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:49,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:49,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:49,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 18:11:49,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:49,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 18:11:49,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:49,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:11:49,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:49,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 18:11:49,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:11:49,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:11:49,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:49,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:49,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:49,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:11:49,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:49,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:11:49,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:49,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:49,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:49,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:49,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:49,339 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 31 proven. 30 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-09-24 18:11:49,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2043244638] [2020-09-24 18:11:49,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:11:49,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:11:49,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418768799] [2020-09-24 18:11:49,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:11:49,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:11:49,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:11:49,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:11:49,349 INFO L87 Difference]: Start difference. First operand 66 states and 88 transitions. Second operand 7 states. [2020-09-24 18:11:49,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:11:49,518 INFO L93 Difference]: Finished difference Result 111 states and 163 transitions. [2020-09-24 18:11:49,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 18:11:49,519 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 92 [2020-09-24 18:11:49,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:11:49,524 INFO L225 Difference]: With dead ends: 111 [2020-09-24 18:11:49,524 INFO L226 Difference]: Without dead ends: 105 [2020-09-24 18:11:49,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-09-24 18:11:49,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-09-24 18:11:49,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 101. [2020-09-24 18:11:49,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-09-24 18:11:49,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 153 transitions. [2020-09-24 18:11:49,555 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 153 transitions. Word has length 92 [2020-09-24 18:11:49,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:11:49,555 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 153 transitions. [2020-09-24 18:11:49,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:11:49,556 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 153 transitions. [2020-09-24 18:11:49,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-24 18:11:49,559 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:11:49,560 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 11, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:11:49,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:11:49,560 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:11:49,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:11:49,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1454565455, now seen corresponding path program 3 times [2020-09-24 18:11:49,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:11:49,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [850843270] [2020-09-24 18:11:49,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:11:49,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:49,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:49,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:49,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:49,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:54,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:54,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-09-24 18:11:54,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:11:54,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-24 18:11:54,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:54,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 18:11:54,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-24 18:11:54,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 18:11:54,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:54,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:11:54,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:54,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:54,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:54,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:11:54,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:54,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:11:54,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:54,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:54,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:54,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:54,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:11:54,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 18:11:54,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:54,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:54,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:54,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:54,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:59,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:59,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-09-24 18:11:59,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:11:59,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-24 18:11:59,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:59,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 18:11:59,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 18:11:59,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 18:11:59,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:59,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:11:59,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:59,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:59,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:59,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:00,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:00,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:00,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:04,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:04,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-09-24 18:12:04,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:12:04,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 18:12:04,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:04,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 18:12:04,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 18:12:04,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 18:12:04,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:12:04,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:04,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:04,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:04,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:05,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:05,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 18:12:05,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:12:05,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 702 [2020-09-24 18:12:05,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:05,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 18:12:05,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:05,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-24 18:12:05,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:05,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:05,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:05,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:05,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:05,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:05,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 18:12:05,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:12:05,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 403 [2020-09-24 18:12:05,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:05,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:12:05,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:05,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 18:12:05,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:05,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:05,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:05,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:05,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:05,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 18:12:05,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:05,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 18:12:05,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:05,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:12:05,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:05,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 18:12:05,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:12:05,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:05,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:05,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:05,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:05,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:12:05,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:05,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:12:05,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:05,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:12:05,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:05,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:12:05,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:05,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 18:12:05,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:05,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:06,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:06,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:12:06,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:06,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 18:12:06,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:06,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:12:06,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:06,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:12:06,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:06,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 18:12:06,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:06,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:06,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:06,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:06,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:07,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:07,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 18:12:07,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:12:07,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1131 [2020-09-24 18:12:07,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:07,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:12:07,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:12:07,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-24 18:12:07,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:07,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:07,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:07,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:07,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:07,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:07,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:07,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:07,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 18:12:07,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:12:07,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 494 [2020-09-24 18:12:07,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:07,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:12:07,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:07,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 18:12:07,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:07,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:07,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:07,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:07,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:07,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 18:12:07,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:07,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 18:12:07,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:07,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:12:07,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:07,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 18:12:07,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:07,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:07,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:07,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:07,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:07,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:12:07,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:07,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:12:07,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:07,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:12:07,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:07,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:12:07,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:12:07,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 18:12:07,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:07,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:07,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:07,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:12:07,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:07,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:12:07,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:07,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:12:07,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:07,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:12:07,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:12:07,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-09-24 18:12:07,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:07,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:07,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:07,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 18:12:07,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:07,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 18:12:07,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:07,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:12:07,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-09-24 18:12:07,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:12:07,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:12:07,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:07,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:07,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:07,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:07,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 18:12:07,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:07,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:12:07,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:07,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:12:07,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:07,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:12:07,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:12:07,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:07,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:07,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:07,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:07,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 18:12:07,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:07,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:12:07,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:07,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:12:07,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:07,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:12:07,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:12:07,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:07,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:07,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:07,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:07,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:12:07,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:07,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:12:07,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:07,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:12:07,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:07,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:12:07,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:07,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 18:12:07,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:07,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:07,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:07,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:12:07,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:07,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:12:07,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:07,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:12:07,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:07,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:12:07,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:12:08,035 INFO L134 CoverageAnalysis]: Checked inductivity of 880 backedges. 165 proven. 277 refuted. 0 times theorem prover too weak. 438 trivial. 0 not checked. [2020-09-24 18:12:08,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [850843270] [2020-09-24 18:12:08,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:12:08,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 18:12:08,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348783577] [2020-09-24 18:12:08,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 18:12:08,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:12:08,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 18:12:08,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-09-24 18:12:08,038 INFO L87 Difference]: Start difference. First operand 101 states and 153 transitions. Second operand 10 states. [2020-09-24 18:12:08,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:12:08,372 INFO L93 Difference]: Finished difference Result 205 states and 367 transitions. [2020-09-24 18:12:08,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:12:08,374 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 179 [2020-09-24 18:12:08,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:12:08,383 INFO L225 Difference]: With dead ends: 205 [2020-09-24 18:12:08,383 INFO L226 Difference]: Without dead ends: 117 [2020-09-24 18:12:08,385 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-09-24 18:12:08,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-09-24 18:12:08,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2020-09-24 18:12:08,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-09-24 18:12:08,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 161 transitions. [2020-09-24 18:12:08,422 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 161 transitions. Word has length 179 [2020-09-24 18:12:08,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:12:08,423 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 161 transitions. [2020-09-24 18:12:08,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 18:12:08,423 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 161 transitions. [2020-09-24 18:12:08,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-09-24 18:12:08,425 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:12:08,425 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:12:08,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:12:08,428 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:12:08,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:12:08,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1778048969, now seen corresponding path program 4 times [2020-09-24 18:12:08,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:12:08,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [490232541] [2020-09-24 18:12:08,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:12:08,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:08,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:08,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:13,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:13,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-24 18:12:13,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:12:13,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-24 18:12:13,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:13,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 18:12:13,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-09-24 18:12:13,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 18:12:13,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:13,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:12:13,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:13,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:13,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:13,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:12:13,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:13,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:12:13,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:13,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:12:13,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:13,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:12:13,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:13,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 18:12:13,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:13,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:13,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:18,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:18,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-09-24 18:12:18,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:12:18,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4841 [2020-09-24 18:12:18,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:18,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 18:12:18,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-24 18:12:18,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 18:12:18,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:18,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:18,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:18,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:18,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:21,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:21,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-24 18:12:21,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:12:21,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3034 [2020-09-24 18:12:21,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:21,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 18:12:21,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:21,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-24 18:12:21,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:21,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:21,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:21,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:21,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:21,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 18:12:21,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:21,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 18:12:21,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:21,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:12:21,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:21,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:12:21,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:21,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:21,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:21,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:21,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:21,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 18:12:21,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:21,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:12:21,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:21,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:12:21,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:21,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:12:21,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:21,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:21,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:21,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:21,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:21,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 18:12:21,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:21,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:12:21,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:21,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:12:21,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:21,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:12:21,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:21,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:21,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:21,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:21,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:21,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:12:21,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:21,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:12:21,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:21,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:12:21,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:21,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:12:21,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:21,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 18:12:21,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:21,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:21,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:21,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:12:21,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:21,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:12:21,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:21,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:12:21,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:21,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:12:21,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:21,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 18:12:21,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:21,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:21,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:21,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 18:12:21,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:21,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 18:12:21,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:21,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:12:21,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:21,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 18:12:21,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:21,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:21,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:21,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:21,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:21,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:12:21,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:21,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:12:21,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:21,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:12:21,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:21,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:12:21,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:21,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-24 18:12:21,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:21,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:21,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:21,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 18:12:21,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:21,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 18:12:21,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:21,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:12:21,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 18:12:21,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 18:12:21,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:21,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:12:21,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:21,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:21,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:21,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:12:21,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:21,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:12:21,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:21,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:12:21,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:21,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:12:21,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:21,686 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 117 proven. 23 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2020-09-24 18:12:21,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [490232541] [2020-09-24 18:12:21,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:12:21,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 18:12:21,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749781127] [2020-09-24 18:12:21,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 18:12:21,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:12:21,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 18:12:21,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-24 18:12:21,689 INFO L87 Difference]: Start difference. First operand 117 states and 161 transitions. Second operand 10 states. [2020-09-24 18:12:22,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:12:22,167 INFO L93 Difference]: Finished difference Result 278 states and 447 transitions. [2020-09-24 18:12:22,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 18:12:22,168 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 121 [2020-09-24 18:12:22,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:12:22,172 INFO L225 Difference]: With dead ends: 278 [2020-09-24 18:12:22,172 INFO L226 Difference]: Without dead ends: 177 [2020-09-24 18:12:22,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2020-09-24 18:12:22,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-09-24 18:12:22,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 154. [2020-09-24 18:12:22,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-09-24 18:12:22,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 239 transitions. [2020-09-24 18:12:22,200 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 239 transitions. Word has length 121 [2020-09-24 18:12:22,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:12:22,201 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 239 transitions. [2020-09-24 18:12:22,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 18:12:22,201 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 239 transitions. [2020-09-24 18:12:22,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-24 18:12:22,204 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:12:22,204 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 8, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:12:22,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:12:22,204 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:12:22,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:12:22,205 INFO L82 PathProgramCache]: Analyzing trace with hash 456662988, now seen corresponding path program 5 times [2020-09-24 18:12:22,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:12:22,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [291068461] [2020-09-24 18:12:22,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:12:22,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:22,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:22,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:27,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:27,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-24 18:12:27,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:12:27,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 18:12:27,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:27,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 18:12:27,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-09-24 18:12:27,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 18:12:27,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:27,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:12:27,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:27,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:27,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:27,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:12:27,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:27,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:12:27,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:27,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:12:27,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:27,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:12:27,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:27,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 18:12:27,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:27,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:27,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking...