/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label14.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 13:20:46,683 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 13:20:46,686 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 13:20:46,733 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 13:20:46,734 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 13:20:46,743 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 13:20:46,746 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 13:20:46,751 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 13:20:46,754 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 13:20:46,757 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 13:20:46,759 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 13:20:46,760 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 13:20:46,760 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 13:20:46,764 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 13:20:46,768 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 13:20:46,770 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 13:20:46,772 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 13:20:46,773 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 13:20:46,775 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 13:20:46,785 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 13:20:46,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 13:20:46,789 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 13:20:46,790 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 13:20:46,791 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 13:20:46,806 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 13:20:46,806 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 13:20:46,807 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 13:20:46,809 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 13:20:46,810 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 13:20:46,817 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 13:20:46,817 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 13:20:46,818 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 13:20:46,819 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 13:20:46,820 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 13:20:46,820 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 13:20:46,821 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 13:20:46,827 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 13:20:46,827 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 13:20:46,828 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 13:20:46,829 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 13:20:46,830 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 13:20:46,832 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 13:20:46,884 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 13:20:46,885 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 13:20:46,887 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 13:20:46,887 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 13:20:46,887 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 13:20:46,887 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 13:20:46,888 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 13:20:46,888 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 13:20:46,888 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 13:20:46,888 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 13:20:46,890 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 13:20:46,890 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 13:20:46,890 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 13:20:46,891 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 13:20:46,891 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 13:20:46,891 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 13:20:46,891 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 13:20:46,892 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 13:20:46,892 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 13:20:46,892 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 13:20:46,893 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 13:20:46,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 13:20:46,893 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 13:20:46,893 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 13:20:46,894 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 13:20:46,894 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 13:20:46,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 13:20:46,894 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 13:20:46,894 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 13:20:46,894 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 13:20:47,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 13:20:47,239 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 13:20:47,244 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 13:20:47,246 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 13:20:47,246 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 13:20:47,247 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label14.c [2020-10-12 13:20:47,345 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6dcceb5ab/ac402e57972a4dd5b0aad0c69e95fa02/FLAGed76edadf [2020-10-12 13:20:48,249 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 13:20:48,250 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label14.c [2020-10-12 13:20:48,293 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6dcceb5ab/ac402e57972a4dd5b0aad0c69e95fa02/FLAGed76edadf [2020-10-12 13:20:48,764 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6dcceb5ab/ac402e57972a4dd5b0aad0c69e95fa02 [2020-10-12 13:20:48,778 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 13:20:48,781 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 13:20:48,783 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 13:20:48,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 13:20:48,787 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 13:20:48,789 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:20:48" (1/1) ... [2020-10-12 13:20:48,793 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ee4d01a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:20:48, skipping insertion in model container [2020-10-12 13:20:48,794 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:20:48" (1/1) ... [2020-10-12 13:20:48,804 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 13:20:48,959 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 13:20:50,697 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:20:50,706 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 13:20:51,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:20:51,614 INFO L208 MainTranslator]: Completed translation [2020-10-12 13:20:51,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:20:51 WrapperNode [2020-10-12 13:20:51,616 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 13:20:51,617 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 13:20:51,618 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 13:20:51,618 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 13:20:51,636 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:20:51" (1/1) ... [2020-10-12 13:20:51,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:20:51" (1/1) ... [2020-10-12 13:20:51,715 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:20:51" (1/1) ... [2020-10-12 13:20:51,715 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:20:51" (1/1) ... [2020-10-12 13:20:51,852 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:20:51" (1/1) ... [2020-10-12 13:20:51,909 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:20:51" (1/1) ... [2020-10-12 13:20:51,949 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:20:51" (1/1) ... [2020-10-12 13:20:52,003 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 13:20:52,004 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 13:20:52,005 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 13:20:52,005 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 13:20:52,006 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:20:51" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 13:20:52,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 13:20:52,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 13:20:52,094 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 13:20:52,094 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 13:20:52,095 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 13:20:52,095 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 13:20:52,095 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 13:20:52,095 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 13:20:52,096 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 13:20:52,097 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 13:20:52,097 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 13:20:52,097 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 13:20:52,097 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 13:20:52,097 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 13:20:52,098 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 13:20:52,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 13:20:52,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 13:20:58,374 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 13:20:58,375 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 13:20:58,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:20:58 BoogieIcfgContainer [2020-10-12 13:20:58,394 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 13:20:58,397 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 13:20:58,397 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 13:20:58,401 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 13:20:58,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 01:20:48" (1/3) ... [2020-10-12 13:20:58,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4db2fee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:20:58, skipping insertion in model container [2020-10-12 13:20:58,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:20:51" (2/3) ... [2020-10-12 13:20:58,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4db2fee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:20:58, skipping insertion in model container [2020-10-12 13:20:58,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:20:58" (3/3) ... [2020-10-12 13:20:58,411 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label14.c [2020-10-12 13:20:58,425 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 13:20:58,441 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 13:20:58,454 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 13:20:58,491 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 13:20:58,491 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 13:20:58,491 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 13:20:58,492 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 13:20:58,492 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 13:20:58,492 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 13:20:58,492 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 13:20:58,492 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 13:20:58,535 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-12 13:20:58,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-12 13:20:58,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:20:58,547 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:20:58,547 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:20:58,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:20:58,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1880403285, now seen corresponding path program 1 times [2020-10-12 13:20:58,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:20:58,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066400392] [2020-10-12 13:20:58,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:20:58,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:20:58,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:59,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:20:59,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 13:20:59,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:20:59,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 434 [2020-10-12 13:20:59,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:20:59,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:20:59,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:20:59,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 13:20:59,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-12 13:20:59,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:20:59,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:20:59,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:59,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:20:59,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:20:59,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:20:59,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 13:20:59,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:20:59,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:20:59,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:20:59,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:20:59,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 13:20:59,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:20:59,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066400392] [2020-10-12 13:20:59,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:20:59,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 13:20:59,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430829755] [2020-10-12 13:20:59,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:20:59,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:20:59,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:20:59,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:20:59,545 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 5 states. [2020-10-12 13:21:14,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:21:14,949 INFO L93 Difference]: Finished difference Result 3253 states and 6293 transitions. [2020-10-12 13:21:14,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:21:14,952 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2020-10-12 13:21:14,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:21:14,995 INFO L225 Difference]: With dead ends: 3253 [2020-10-12 13:21:14,995 INFO L226 Difference]: Without dead ends: 2346 [2020-10-12 13:21:15,009 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:21:15,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2346 states. [2020-10-12 13:21:15,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2346 to 2331. [2020-10-12 13:21:15,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2331 states. [2020-10-12 13:21:15,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2331 states to 2331 states and 3834 transitions. [2020-10-12 13:21:15,228 INFO L78 Accepts]: Start accepts. Automaton has 2331 states and 3834 transitions. Word has length 54 [2020-10-12 13:21:15,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:21:15,231 INFO L479 AbstractCegarLoop]: Abstraction has 2331 states and 3834 transitions. [2020-10-12 13:21:15,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:21:15,232 INFO L276 IsEmpty]: Start isEmpty. Operand 2331 states and 3834 transitions. [2020-10-12 13:21:15,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-12 13:21:15,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:21:15,251 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:21:15,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 13:21:15,253 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:21:15,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:21:15,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1159987324, now seen corresponding path program 1 times [2020-10-12 13:21:15,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:21:15,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1582254387] [2020-10-12 13:21:15,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:21:15,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:21:15,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:15,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:15,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:16,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:21:16,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-12 13:21:16,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:21:16,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1530 [2020-10-12 13:21:16,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:21:16,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:21:16,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:21:16,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-12 13:21:16,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 13:21:16,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:21:16,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:21:16,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:16,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:21:16,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:21:16,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:21:16,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 13:21:16,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:21:16,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:21:16,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:21:16,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:21:16,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:21:17,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:21:17,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:21:17,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:17,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:17,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:21:17,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 13:21:17,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:21:17,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-12 13:21:17,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:21:17,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:21:17,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:21:17,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-12 13:21:17,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:21:17,377 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 13:21:17,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1582254387] [2020-10-12 13:21:17,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:21:17,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:21:17,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261226370] [2020-10-12 13:21:17,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:21:17,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:21:17,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:21:17,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:21:17,383 INFO L87 Difference]: Start difference. First operand 2331 states and 3834 transitions. Second operand 6 states. [2020-10-12 13:21:29,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:21:29,156 INFO L93 Difference]: Finished difference Result 7032 states and 11659 transitions. [2020-10-12 13:21:29,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:21:29,157 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2020-10-12 13:21:29,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:21:29,185 INFO L225 Difference]: With dead ends: 7032 [2020-10-12 13:21:29,185 INFO L226 Difference]: Without dead ends: 4707 [2020-10-12 13:21:29,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:21:29,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4707 states. [2020-10-12 13:21:29,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4707 to 4689. [2020-10-12 13:21:29,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4689 states. [2020-10-12 13:21:29,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4689 states to 4689 states and 6768 transitions. [2020-10-12 13:21:29,326 INFO L78 Accepts]: Start accepts. Automaton has 4689 states and 6768 transitions. Word has length 132 [2020-10-12 13:21:29,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:21:29,330 INFO L479 AbstractCegarLoop]: Abstraction has 4689 states and 6768 transitions. [2020-10-12 13:21:29,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 13:21:29,330 INFO L276 IsEmpty]: Start isEmpty. Operand 4689 states and 6768 transitions. [2020-10-12 13:21:29,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-12 13:21:29,338 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:21:29,338 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:21:29,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 13:21:29,339 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:21:29,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:21:29,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1915529153, now seen corresponding path program 1 times [2020-10-12 13:21:29,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:21:29,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1426785355] [2020-10-12 13:21:29,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:21:29,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:21:29,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:29,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:30,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:31,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:34,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:21:34,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-12 13:21:34,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:21:34,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4897 [2020-10-12 13:21:34,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:21:34,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:21:34,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:21:34,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-12 13:21:34,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:21:34,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:21:34,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:21:34,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:34,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:21:34,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:21:34,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:21:34,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 13:21:34,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:21:34,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:21:34,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:21:34,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:21:34,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:21:34,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:21:34,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:21:34,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:34,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:34,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:21:34,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 13:21:34,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:21:34,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-12 13:21:34,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:21:34,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:21:34,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:21:34,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-12 13:21:34,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:21:34,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-12 13:21:34,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:21:34,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:34,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:21:34,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:21:34,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:21:34,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-12 13:21:34,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:21:34,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:21:34,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:21:34,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 13:21:34,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:21:35,021 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 95 proven. 68 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 13:21:35,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1426785355] [2020-10-12 13:21:35,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:21:35,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:21:35,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571216312] [2020-10-12 13:21:35,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:21:35,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:21:35,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:21:35,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:21:35,026 INFO L87 Difference]: Start difference. First operand 4689 states and 6768 transitions. Second operand 8 states. [2020-10-12 13:21:50,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:21:50,888 INFO L93 Difference]: Finished difference Result 14568 states and 22710 transitions. [2020-10-12 13:21:50,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 13:21:50,889 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 206 [2020-10-12 13:21:50,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:21:50,964 INFO L225 Difference]: With dead ends: 14568 [2020-10-12 13:21:50,964 INFO L226 Difference]: Without dead ends: 9885 [2020-10-12 13:21:50,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-12 13:21:51,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9885 states. [2020-10-12 13:21:51,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9885 to 9568. [2020-10-12 13:21:51,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9568 states. [2020-10-12 13:21:51,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9568 states to 9568 states and 12582 transitions. [2020-10-12 13:21:51,369 INFO L78 Accepts]: Start accepts. Automaton has 9568 states and 12582 transitions. Word has length 206 [2020-10-12 13:21:51,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:21:51,371 INFO L479 AbstractCegarLoop]: Abstraction has 9568 states and 12582 transitions. [2020-10-12 13:21:51,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:21:51,372 INFO L276 IsEmpty]: Start isEmpty. Operand 9568 states and 12582 transitions. [2020-10-12 13:21:51,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-12 13:21:51,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:21:51,376 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1] [2020-10-12 13:21:51,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 13:21:51,377 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:21:51,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:21:51,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1497466029, now seen corresponding path program 1 times [2020-10-12 13:21:51,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:21:51,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1503414254] [2020-10-12 13:21:51,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:21:51,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:21:51,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:51,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:52,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:54,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:21:54,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-12 13:21:54,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:21:54,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3562 [2020-10-12 13:21:54,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:21:54,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:21:54,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:21:54,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-12 13:21:54,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:21:55,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:21:55,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:21:55,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:55,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:21:55,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:21:55,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:21:55,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 13:21:55,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:21:55,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:21:55,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:21:55,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:21:55,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:21:55,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:21:55,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:21:55,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:55,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:21:55,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 13:21:55,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:21:55,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-12 13:21:55,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:21:55,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:21:55,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:21:55,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-12 13:21:55,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:21:55,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-12 13:21:55,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:21:55,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:55,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:21:55,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:21:55,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:21:55,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-12 13:21:55,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:21:55,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:21:55,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-12 13:21:55,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:21:55,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:21:55,622 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 94 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 13:21:55,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1503414254] [2020-10-12 13:21:55,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:21:55,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:21:55,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059903142] [2020-10-12 13:21:55,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:21:55,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:21:55,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:21:55,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:21:55,631 INFO L87 Difference]: Start difference. First operand 9568 states and 12582 transitions. Second operand 7 states. [2020-10-12 13:22:11,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:22:11,864 INFO L93 Difference]: Finished difference Result 27447 states and 37587 transitions. [2020-10-12 13:22:11,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:22:11,868 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 212 [2020-10-12 13:22:11,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:22:11,959 INFO L225 Difference]: With dead ends: 27447 [2020-10-12 13:22:11,959 INFO L226 Difference]: Without dead ends: 17885 [2020-10-12 13:22:12,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:22:12,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17885 states. [2020-10-12 13:22:12,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17885 to 16202. [2020-10-12 13:22:12,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16202 states. [2020-10-12 13:22:12,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16202 states to 16202 states and 21049 transitions. [2020-10-12 13:22:12,596 INFO L78 Accepts]: Start accepts. Automaton has 16202 states and 21049 transitions. Word has length 212 [2020-10-12 13:22:12,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:22:12,598 INFO L479 AbstractCegarLoop]: Abstraction has 16202 states and 21049 transitions. [2020-10-12 13:22:12,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:22:12,598 INFO L276 IsEmpty]: Start isEmpty. Operand 16202 states and 21049 transitions. [2020-10-12 13:22:12,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-12 13:22:12,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:22:12,604 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:22:12,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 13:22:12,604 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:22:12,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:22:12,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1859101400, now seen corresponding path program 1 times [2020-10-12 13:22:12,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:22:12,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [916411496] [2020-10-12 13:22:12,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:22:12,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:12,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:12,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:13,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:14,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:14,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-12 13:22:14,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:22:14,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1344 [2020-10-12 13:22:14,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:14,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:22:14,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-12 13:22:14,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-12 13:22:14,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:22:14,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:22:14,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:14,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:14,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:14,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:22:14,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:22:14,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:22:14,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:14,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:22:14,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:22:14,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:22:14,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:22:14,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:22:14,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:14,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:14,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:14,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:22:14,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:22:14,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-12 13:22:14,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:14,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:22:14,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:22:14,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 13:22:14,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:22:14,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 13:22:14,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:14,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:14,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:14,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-12 13:22:14,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:22:14,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-12 13:22:14,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:14,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:22:14,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:22:14,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-12 13:22:14,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:22:14,815 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 166 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 13:22:14,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [916411496] [2020-10-12 13:22:14,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:22:14,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:22:14,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629823054] [2020-10-12 13:22:14,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:22:14,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:22:14,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:22:14,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:22:14,819 INFO L87 Difference]: Start difference. First operand 16202 states and 21049 transitions. Second operand 7 states. [2020-10-12 13:22:32,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:22:32,353 INFO L93 Difference]: Finished difference Result 30371 states and 42260 transitions. [2020-10-12 13:22:32,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:22:32,359 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 253 [2020-10-12 13:22:32,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:22:32,408 INFO L225 Difference]: With dead ends: 30371 [2020-10-12 13:22:32,408 INFO L226 Difference]: Without dead ends: 12501 [2020-10-12 13:22:32,459 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-12 13:22:32,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12501 states. [2020-10-12 13:22:32,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12501 to 12140. [2020-10-12 13:22:32,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12140 states. [2020-10-12 13:22:32,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12140 states to 12140 states and 15204 transitions. [2020-10-12 13:22:32,772 INFO L78 Accepts]: Start accepts. Automaton has 12140 states and 15204 transitions. Word has length 253 [2020-10-12 13:22:32,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:22:32,773 INFO L479 AbstractCegarLoop]: Abstraction has 12140 states and 15204 transitions. [2020-10-12 13:22:32,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:22:32,773 INFO L276 IsEmpty]: Start isEmpty. Operand 12140 states and 15204 transitions. [2020-10-12 13:22:32,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-10-12 13:22:32,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:22:32,779 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:22:32,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 13:22:32,779 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:22:32,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:22:32,780 INFO L82 PathProgramCache]: Analyzing trace with hash -2111470586, now seen corresponding path program 1 times [2020-10-12 13:22:32,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:22:32,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1408954419] [2020-10-12 13:22:32,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:22:32,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:32,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:33,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:35,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:35,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 13:22:35,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:22:35,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2691 [2020-10-12 13:22:35,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:35,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:22:35,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:22:35,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-12 13:22:35,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:22:35,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:22:35,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:35,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:35,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:35,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:22:35,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:22:35,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 13:22:35,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:35,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:22:35,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:22:35,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:22:35,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:22:35,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:22:35,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:35,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:36,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:36,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-12 13:22:36,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:22:36,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-10-12 13:22:36,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:36,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:22:36,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:22:36,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-12 13:22:36,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:22:36,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-12 13:22:36,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:36,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:36,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:36,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:22:36,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:22:36,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-12 13:22:36,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:36,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:22:36,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-12 13:22:36,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:22:36,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:22:37,034 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 94 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 13:22:37,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1408954419] [2020-10-12 13:22:37,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:22:37,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:22:37,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420964497] [2020-10-12 13:22:37,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:22:37,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:22:37,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:22:37,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:22:37,038 INFO L87 Difference]: Start difference. First operand 12140 states and 15204 transitions. Second operand 7 states. [2020-10-12 13:22:53,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:22:53,460 INFO L93 Difference]: Finished difference Result 30113 states and 37534 transitions. [2020-10-12 13:22:53,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:22:53,462 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 275 [2020-10-12 13:22:53,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:22:53,521 INFO L225 Difference]: With dead ends: 30113 [2020-10-12 13:22:53,521 INFO L226 Difference]: Without dead ends: 17971 [2020-10-12 13:22:53,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:22:53,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17971 states. [2020-10-12 13:22:53,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17971 to 16969. [2020-10-12 13:22:53,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16969 states. [2020-10-12 13:22:53,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16969 states to 16969 states and 20494 transitions. [2020-10-12 13:22:53,892 INFO L78 Accepts]: Start accepts. Automaton has 16969 states and 20494 transitions. Word has length 275 [2020-10-12 13:22:53,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:22:53,892 INFO L479 AbstractCegarLoop]: Abstraction has 16969 states and 20494 transitions. [2020-10-12 13:22:53,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:22:53,893 INFO L276 IsEmpty]: Start isEmpty. Operand 16969 states and 20494 transitions. [2020-10-12 13:22:53,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-10-12 13:22:53,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:22:53,898 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:22:53,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 13:22:53,899 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:22:53,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:22:53,899 INFO L82 PathProgramCache]: Analyzing trace with hash 858191561, now seen corresponding path program 1 times [2020-10-12 13:22:53,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:22:53,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [407466763] [2020-10-12 13:22:53,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:22:53,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:54,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:54,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:54,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-12 13:22:54,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:22:54,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 494 [2020-10-12 13:22:54,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:54,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:22:54,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 260 [2020-10-12 13:22:54,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-12 13:22:54,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:22:54,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:22:54,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:54,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:54,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:54,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:22:54,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:22:54,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:22:54,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:54,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:22:54,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:22:54,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:22:54,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:22:54,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:22:54,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:54,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:54,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:54,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 13:22:54,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:22:54,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-12 13:22:54,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:54,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:22:54,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:22:54,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:22:54,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:22:54,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-12 13:22:54,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:54,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:54,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:54,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-12 13:22:54,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:22:54,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-12 13:22:54,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:54,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:22:54,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:22:54,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-12 13:22:54,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:22:55,093 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-12 13:22:55,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [407466763] [2020-10-12 13:22:55,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:22:55,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:22:55,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227281955] [2020-10-12 13:22:55,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:22:55,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:22:55,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:22:55,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:22:55,099 INFO L87 Difference]: Start difference. First operand 16969 states and 20494 transitions. Second operand 5 states. [2020-10-12 13:23:09,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:23:09,383 INFO L93 Difference]: Finished difference Result 38690 states and 48778 transitions. [2020-10-12 13:23:09,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:23:09,384 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 302 [2020-10-12 13:23:09,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:23:09,457 INFO L225 Difference]: With dead ends: 38690 [2020-10-12 13:23:09,457 INFO L226 Difference]: Without dead ends: 21727 [2020-10-12 13:23:09,482 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:23:09,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21727 states. [2020-10-12 13:23:09,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21727 to 21684. [2020-10-12 13:23:09,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21684 states. [2020-10-12 13:23:09,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21684 states to 21684 states and 26264 transitions. [2020-10-12 13:23:09,855 INFO L78 Accepts]: Start accepts. Automaton has 21684 states and 26264 transitions. Word has length 302 [2020-10-12 13:23:09,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:23:09,857 INFO L479 AbstractCegarLoop]: Abstraction has 21684 states and 26264 transitions. [2020-10-12 13:23:09,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:23:09,857 INFO L276 IsEmpty]: Start isEmpty. Operand 21684 states and 26264 transitions. [2020-10-12 13:23:09,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2020-10-12 13:23:09,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:23:09,867 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:23:09,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 13:23:09,868 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:23:09,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:23:09,868 INFO L82 PathProgramCache]: Analyzing trace with hash -645000463, now seen corresponding path program 1 times [2020-10-12 13:23:09,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:23:09,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1098128267] [2020-10-12 13:23:09,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:23:09,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:10,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:10,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:12,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:12,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 407 [2020-10-12 13:23:12,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:23:12,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2911 [2020-10-12 13:23:12,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:12,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:23:12,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 353 [2020-10-12 13:23:12,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-12 13:23:12,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:13,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:23:13,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:13,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:13,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:13,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:23:13,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:13,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:23:13,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:13,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:23:13,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:23:13,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:23:13,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:13,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:23:13,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:13,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:13,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:13,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 13:23:13,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:13,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-12 13:23:13,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:13,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:23:13,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:23:13,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:23:13,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:23:13,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-12 13:23:13,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:13,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:13,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:13,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 13:23:13,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:13,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-12 13:23:13,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:13,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:23:13,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:23:13,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:23:13,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:13,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-10-12 13:23:13,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:13,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:13,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:13,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:23:13,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:13,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-12 13:23:13,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:13,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:23:13,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:23:13,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 13:23:13,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:23:13,621 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 144 proven. 3 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2020-10-12 13:23:13,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1098128267] [2020-10-12 13:23:13,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:23:13,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:23:13,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301688438] [2020-10-12 13:23:13,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:23:13,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:23:13,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:23:13,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:23:13,625 INFO L87 Difference]: Start difference. First operand 21684 states and 26264 transitions. Second operand 5 states. [2020-10-12 13:23:27,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:23:27,288 INFO L93 Difference]: Finished difference Result 63066 states and 79147 transitions. [2020-10-12 13:23:27,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:23:27,290 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 393 [2020-10-12 13:23:27,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:23:27,428 INFO L225 Difference]: With dead ends: 63066 [2020-10-12 13:23:27,429 INFO L226 Difference]: Without dead ends: 40616 [2020-10-12 13:23:27,471 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:23:27,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40616 states. [2020-10-12 13:23:28,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40616 to 39829. [2020-10-12 13:23:28,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39829 states. [2020-10-12 13:23:30,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39829 states to 39829 states and 49294 transitions. [2020-10-12 13:23:30,046 INFO L78 Accepts]: Start accepts. Automaton has 39829 states and 49294 transitions. Word has length 393 [2020-10-12 13:23:30,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:23:30,048 INFO L479 AbstractCegarLoop]: Abstraction has 39829 states and 49294 transitions. [2020-10-12 13:23:30,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:23:30,048 INFO L276 IsEmpty]: Start isEmpty. Operand 39829 states and 49294 transitions. [2020-10-12 13:23:30,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2020-10-12 13:23:30,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:23:30,061 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:23:30,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 13:23:30,062 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:23:30,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:23:30,063 INFO L82 PathProgramCache]: Analyzing trace with hash 724915696, now seen corresponding path program 1 times [2020-10-12 13:23:30,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:23:30,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1709549209] [2020-10-12 13:23:30,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:23:30,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:30,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:30,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:31,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:33,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:33,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 426 [2020-10-12 13:23:33,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:23:33,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2986 [2020-10-12 13:23:33,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:33,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:23:33,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-12 13:23:33,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-12 13:23:33,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:33,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:23:33,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:33,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:33,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:33,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:23:33,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:33,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:23:33,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:33,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:23:33,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:23:33,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:23:33,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:33,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:23:33,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:33,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:33,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:33,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 13:23:33,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:33,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-12 13:23:33,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:33,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:23:33,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:23:33,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-12 13:23:33,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:33,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-12 13:23:33,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:33,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:33,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:33,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:33,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 13:23:33,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:23:33,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-12 13:23:33,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:33,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:23:33,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:23:33,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-12 13:23:33,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:33,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-12 13:23:34,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:34,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:34,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:34,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-12 13:23:34,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:34,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-12 13:23:34,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:34,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:23:34,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:23:34,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-12 13:23:34,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:34,676 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 348 proven. 88 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-12 13:23:34,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1709549209] [2020-10-12 13:23:34,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:23:34,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 13:23:34,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215034764] [2020-10-12 13:23:34,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:23:34,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:23:34,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:23:34,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:23:34,682 INFO L87 Difference]: Start difference. First operand 39829 states and 49294 transitions. Second operand 8 states. [2020-10-12 13:23:59,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:23:59,969 INFO L93 Difference]: Finished difference Result 96170 states and 125229 transitions. [2020-10-12 13:23:59,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 13:23:59,977 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 412 [2020-10-12 13:23:59,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:24:00,202 INFO L225 Difference]: With dead ends: 96170 [2020-10-12 13:24:00,203 INFO L226 Difference]: Without dead ends: 55578 [2020-10-12 13:24:00,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2020-10-12 13:24:00,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55578 states. [2020-10-12 13:24:01,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55578 to 55412. [2020-10-12 13:24:01,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55412 states. [2020-10-12 13:24:01,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55412 states to 55412 states and 70176 transitions. [2020-10-12 13:24:01,794 INFO L78 Accepts]: Start accepts. Automaton has 55412 states and 70176 transitions. Word has length 412 [2020-10-12 13:24:01,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:24:01,794 INFO L479 AbstractCegarLoop]: Abstraction has 55412 states and 70176 transitions. [2020-10-12 13:24:01,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:24:01,795 INFO L276 IsEmpty]: Start isEmpty. Operand 55412 states and 70176 transitions. [2020-10-12 13:24:01,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2020-10-12 13:24:01,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:24:01,814 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:24:01,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 13:24:01,815 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:24:01,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:24:01,815 INFO L82 PathProgramCache]: Analyzing trace with hash 774449030, now seen corresponding path program 1 times [2020-10-12 13:24:01,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:24:01,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1357855703] [2020-10-12 13:24:01,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:24:01,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:01,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:02,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:02,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:02,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:03,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:06,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:06,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:06,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 457 [2020-10-12 13:24:06,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 13:24:06,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-12 13:24:06,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:06,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:24:06,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-12 13:24:06,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 245 [2020-10-12 13:24:06,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:24:07,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:24:07,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:07,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:07,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:07,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:24:07,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:24:07,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:24:07,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:07,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:24:07,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:24:07,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:24:07,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:24:07,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:24:07,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:07,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:07,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:07,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-12 13:24:07,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:24:07,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-12 13:24:07,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:07,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:24:07,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:24:07,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-12 13:24:07,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:24:07,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-12 13:24:07,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:07,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:07,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:07,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:07,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 13:24:07,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:24:07,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-12 13:24:07,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:07,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:24:07,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:24:07,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-12 13:24:07,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:24:07,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-12 13:24:07,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:07,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:07,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:07,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 13:24:07,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:24:07,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-12 13:24:07,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:07,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:24:07,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:24:07,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-12 13:24:07,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:24:07,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2020-10-12 13:24:07,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:07,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:07,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:07,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 13:24:07,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:24:07,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-12 13:24:07,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:07,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:24:07,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:24:07,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 13:24:07,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:24:08,020 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 417 proven. 10 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2020-10-12 13:24:08,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1357855703] [2020-10-12 13:24:08,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:24:08,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:24:08,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921503890] [2020-10-12 13:24:08,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:24:08,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:24:08,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:24:08,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:24:08,025 INFO L87 Difference]: Start difference. First operand 55412 states and 70176 transitions. Second operand 7 states.