/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/array-examples/standard_copy5_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 09:51:03,745 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 09:51:03,747 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 09:51:03,770 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 09:51:03,771 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 09:51:03,772 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 09:51:03,773 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 09:51:03,775 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 09:51:03,777 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 09:51:03,777 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 09:51:03,778 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 09:51:03,779 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 09:51:03,780 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 09:51:03,781 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 09:51:03,782 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 09:51:03,783 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 09:51:03,783 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 09:51:03,784 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 09:51:03,786 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 09:51:03,788 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 09:51:03,789 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 09:51:03,790 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 09:51:03,791 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 09:51:03,792 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 09:51:03,794 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 09:51:03,795 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 09:51:03,795 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 09:51:03,796 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 09:51:03,796 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 09:51:03,797 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 09:51:03,797 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 09:51:03,798 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 09:51:03,799 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 09:51:03,799 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 09:51:03,800 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 09:51:03,801 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 09:51:03,801 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 09:51:03,801 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 09:51:03,802 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 09:51:03,802 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 09:51:03,803 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 09:51:03,804 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 09:51:03,825 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 09:51:03,826 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 09:51:03,827 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 09:51:03,830 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 09:51:03,830 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 09:51:03,831 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 09:51:03,831 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 09:51:03,831 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 09:51:03,831 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 09:51:03,831 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 09:51:03,832 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 09:51:03,832 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 09:51:03,832 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 09:51:03,832 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 09:51:03,832 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 09:51:03,833 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 09:51:03,833 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 09:51:03,836 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 09:51:03,836 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 09:51:03,836 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 09:51:03,837 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 09:51:03,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 09:51:03,837 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 09:51:03,837 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 09:51:03,837 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 09:51:03,838 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 09:51:03,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 09:51:03,838 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 09:51:03,838 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 09:51:03,838 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 09:51:04,120 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 09:51:04,134 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 09:51:04,138 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 09:51:04,140 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 09:51:04,142 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 09:51:04,143 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copy5_ground-1.i [2020-10-12 09:51:04,214 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5f6afad4b/bd672b04682e40ad9da82d60faf8ec5e/FLAG6e15b0419 [2020-10-12 09:51:04,662 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 09:51:04,663 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_copy5_ground-1.i [2020-10-12 09:51:04,670 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5f6afad4b/bd672b04682e40ad9da82d60faf8ec5e/FLAG6e15b0419 [2020-10-12 09:51:05,053 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5f6afad4b/bd672b04682e40ad9da82d60faf8ec5e [2020-10-12 09:51:05,063 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 09:51:05,064 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 09:51:05,065 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 09:51:05,065 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 09:51:05,069 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 09:51:05,070 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:51:05" (1/1) ... [2020-10-12 09:51:05,073 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@743cee4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:51:05, skipping insertion in model container [2020-10-12 09:51:05,073 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:51:05" (1/1) ... [2020-10-12 09:51:05,082 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 09:51:05,103 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 09:51:05,328 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 09:51:05,332 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 09:51:05,356 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 09:51:05,373 INFO L208 MainTranslator]: Completed translation [2020-10-12 09:51:05,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:51:05 WrapperNode [2020-10-12 09:51:05,374 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 09:51:05,375 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 09:51:05,375 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 09:51:05,375 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 09:51:05,476 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:51:05" (1/1) ... [2020-10-12 09:51:05,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:51:05" (1/1) ... [2020-10-12 09:51:05,488 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:51:05" (1/1) ... [2020-10-12 09:51:05,488 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:51:05" (1/1) ... [2020-10-12 09:51:05,498 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:51:05" (1/1) ... [2020-10-12 09:51:05,505 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:51:05" (1/1) ... [2020-10-12 09:51:05,507 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:51:05" (1/1) ... [2020-10-12 09:51:05,510 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 09:51:05,510 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 09:51:05,510 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 09:51:05,511 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 09:51:05,512 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:51:05" (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 09:51:05,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 09:51:05,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 09:51:05,574 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-12 09:51:05,574 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 09:51:05,574 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 09:51:05,574 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 09:51:05,574 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 09:51:05,575 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 09:51:05,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 09:51:05,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 09:51:05,575 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 09:51:05,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 09:51:05,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 09:51:05,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 09:51:05,879 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 09:51:05,880 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-12 09:51:05,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:51:05 BoogieIcfgContainer [2020-10-12 09:51:05,884 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 09:51:05,886 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 09:51:05,886 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 09:51:05,889 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 09:51:05,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 09:51:05" (1/3) ... [2020-10-12 09:51:05,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f9c0229 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:51:05, skipping insertion in model container [2020-10-12 09:51:05,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:51:05" (2/3) ... [2020-10-12 09:51:05,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f9c0229 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:51:05, skipping insertion in model container [2020-10-12 09:51:05,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:51:05" (3/3) ... [2020-10-12 09:51:05,893 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_copy5_ground-1.i [2020-10-12 09:51:05,906 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 09:51:05,916 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 09:51:05,936 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 09:51:05,970 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 09:51:05,970 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 09:51:05,970 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 09:51:05,971 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 09:51:05,971 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 09:51:05,971 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 09:51:05,971 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 09:51:05,971 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 09:51:05,996 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-10-12 09:51:06,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-12 09:51:06,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:51:06,005 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] [2020-10-12 09:51:06,005 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:51:06,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:51:06,013 INFO L82 PathProgramCache]: Analyzing trace with hash -2095174276, now seen corresponding path program 1 times [2020-10-12 09:51:06,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:51:06,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285788938] [2020-10-12 09:51:06,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:51:06,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:06,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:06,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:06,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:06,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:06,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:06,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:07,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:07,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 09:51:07,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 09:51:07,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1625 [2020-10-12 09:51:07,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:07,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 09:51:07,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 09:51:07,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 09:51:07,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 09:51:07,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:51:07,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:07,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:07,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:07,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:51:07,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:07,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 09:51:07,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:07,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:07,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:51:07,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:07,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 09:51:07,884 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 09:51:07,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1285788938] [2020-10-12 09:51:07,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 09:51:07,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 09:51:07,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171297496] [2020-10-12 09:51:07,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 09:51:07,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:51:07,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 09:51:07,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 09:51:07,919 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 4 states. [2020-10-12 09:51:08,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:51:08,142 INFO L93 Difference]: Finished difference Result 80 states and 117 transitions. [2020-10-12 09:51:08,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 09:51:08,146 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-12 09:51:08,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:51:08,160 INFO L225 Difference]: With dead ends: 80 [2020-10-12 09:51:08,161 INFO L226 Difference]: Without dead ends: 44 [2020-10-12 09:51:08,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 09:51:08,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-12 09:51:08,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 39. [2020-10-12 09:51:08,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-12 09:51:08,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2020-10-12 09:51:08,218 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 23 [2020-10-12 09:51:08,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:51:08,219 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2020-10-12 09:51:08,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 09:51:08,220 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2020-10-12 09:51:08,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-12 09:51:08,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:51:08,222 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] [2020-10-12 09:51:08,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 09:51:08,223 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:51:08,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:51:08,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1810379444, now seen corresponding path program 1 times [2020-10-12 09:51:08,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:51:08,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [297749996] [2020-10-12 09:51:08,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:51:08,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:08,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:08,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:08,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:08,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:08,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:08,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:13,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:13,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-12 09:51:13,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 09:51:13,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 09:51:13,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:13,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 09:51:13,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 09:51:13,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 09:51:13,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:13,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:51:13,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:13,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:13,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:13,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:51:13,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:13,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 09:51:13,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:13,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:13,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:51:13,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:13,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:51:13,319 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 09:51:13,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [297749996] [2020-10-12 09:51:13,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:51:13,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 09:51:13,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128940318] [2020-10-12 09:51:13,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 09:51:13,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:51:13,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 09:51:13,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 09:51:13,329 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 5 states. [2020-10-12 09:51:13,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:51:13,515 INFO L93 Difference]: Finished difference Result 81 states and 96 transitions. [2020-10-12 09:51:13,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 09:51:13,516 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-10-12 09:51:13,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:51:13,517 INFO L225 Difference]: With dead ends: 81 [2020-10-12 09:51:13,517 INFO L226 Difference]: Without dead ends: 54 [2020-10-12 09:51:13,519 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 09:51:13,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-12 09:51:13,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 49. [2020-10-12 09:51:13,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-12 09:51:13,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions. [2020-10-12 09:51:13,529 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 33 [2020-10-12 09:51:13,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:51:13,529 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions. [2020-10-12 09:51:13,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 09:51:13,530 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2020-10-12 09:51:13,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-12 09:51:13,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:51:13,531 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 09:51:13,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 09:51:13,532 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:51:13,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:51:13,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1571360162, now seen corresponding path program 2 times [2020-10-12 09:51:13,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:51:13,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [501036318] [2020-10-12 09:51:13,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:51:13,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:13,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:13,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:13,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:13,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:13,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:17,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:18,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:18,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-12 09:51:18,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 09:51:18,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 09:51:18,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:18,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 09:51:18,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-12 09:51:18,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:51:18,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:51:18,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:51:18,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:18,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:18,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:18,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:51:18,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:18,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 09:51:18,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:18,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:18,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:51:18,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:18,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:51:18,625 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-12 09:51:18,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [501036318] [2020-10-12 09:51:18,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:51:18,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 09:51:18,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860455167] [2020-10-12 09:51:18,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 09:51:18,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:51:18,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 09:51:18,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 09:51:18,631 INFO L87 Difference]: Start difference. First operand 49 states and 55 transitions. Second operand 6 states. [2020-10-12 09:51:18,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:51:18,838 INFO L93 Difference]: Finished difference Result 99 states and 114 transitions. [2020-10-12 09:51:18,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 09:51:18,839 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2020-10-12 09:51:18,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:51:18,840 INFO L225 Difference]: With dead ends: 99 [2020-10-12 09:51:18,840 INFO L226 Difference]: Without dead ends: 64 [2020-10-12 09:51:18,841 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 09:51:18,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-12 09:51:18,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 59. [2020-10-12 09:51:18,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-12 09:51:18,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 65 transitions. [2020-10-12 09:51:18,851 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 65 transitions. Word has length 43 [2020-10-12 09:51:18,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:51:18,851 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 65 transitions. [2020-10-12 09:51:18,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 09:51:18,852 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 65 transitions. [2020-10-12 09:51:18,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-12 09:51:18,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:51:18,853 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:51:18,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 09:51:18,854 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:51:18,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:51:18,854 INFO L82 PathProgramCache]: Analyzing trace with hash 2002852472, now seen corresponding path program 3 times [2020-10-12 09:51:18,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:51:18,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973745939] [2020-10-12 09:51:18,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:51:18,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:18,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:18,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:18,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:18,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:18,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:23,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:23,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-12 09:51:23,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:51:23,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 09:51:23,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:23,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 09:51:23,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 09:51:23,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 09:51:23,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 09:51:23,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:51:23,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:23,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:23,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:23,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:51:23,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:23,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 09:51:23,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:23,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:23,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:51:23,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:23,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:23,933 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-12 09:51:23,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [973745939] [2020-10-12 09:51:23,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:51:23,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 09:51:23,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383202350] [2020-10-12 09:51:23,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 09:51:23,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:51:23,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 09:51:23,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-12 09:51:23,939 INFO L87 Difference]: Start difference. First operand 59 states and 65 transitions. Second operand 7 states. [2020-10-12 09:51:24,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:51:24,145 INFO L93 Difference]: Finished difference Result 117 states and 132 transitions. [2020-10-12 09:51:24,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 09:51:24,146 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 53 [2020-10-12 09:51:24,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:51:24,147 INFO L225 Difference]: With dead ends: 117 [2020-10-12 09:51:24,147 INFO L226 Difference]: Without dead ends: 74 [2020-10-12 09:51:24,148 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-12 09:51:24,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-12 09:51:24,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 69. [2020-10-12 09:51:24,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-12 09:51:24,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 75 transitions. [2020-10-12 09:51:24,157 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 75 transitions. Word has length 53 [2020-10-12 09:51:24,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:51:24,157 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 75 transitions. [2020-10-12 09:51:24,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 09:51:24,157 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 75 transitions. [2020-10-12 09:51:24,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-12 09:51:24,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:51:24,159 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:51:24,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 09:51:24,160 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:51:24,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:51:24,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1230132174, now seen corresponding path program 4 times [2020-10-12 09:51:24,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:51:24,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72859931] [2020-10-12 09:51:24,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:51:24,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:24,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:24,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:24,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:24,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:24,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:29,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:29,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 09:51:29,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:51:29,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 09:51:29,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:29,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 09:51:29,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-12 09:51:29,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 09:51:29,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:29,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:51:29,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:29,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:29,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:29,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:51:29,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:29,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:51:29,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:29,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:29,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:51:29,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:29,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:29,252 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-10-12 09:51:29,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72859931] [2020-10-12 09:51:29,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:51:29,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 09:51:29,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112642611] [2020-10-12 09:51:29,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 09:51:29,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:51:29,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 09:51:29,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 09:51:29,256 INFO L87 Difference]: Start difference. First operand 69 states and 75 transitions. Second operand 8 states. [2020-10-12 09:51:29,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:51:29,485 INFO L93 Difference]: Finished difference Result 135 states and 150 transitions. [2020-10-12 09:51:29,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 09:51:29,485 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-10-12 09:51:29,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:51:29,486 INFO L225 Difference]: With dead ends: 135 [2020-10-12 09:51:29,486 INFO L226 Difference]: Without dead ends: 84 [2020-10-12 09:51:29,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 09:51:29,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-12 09:51:29,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 79. [2020-10-12 09:51:29,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-12 09:51:29,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 85 transitions. [2020-10-12 09:51:29,499 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 85 transitions. Word has length 63 [2020-10-12 09:51:29,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:51:29,499 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 85 transitions. [2020-10-12 09:51:29,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 09:51:29,500 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 85 transitions. [2020-10-12 09:51:29,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-12 09:51:29,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:51:29,501 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:51:29,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 09:51:29,501 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:51:29,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:51:29,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1642653276, now seen corresponding path program 5 times [2020-10-12 09:51:29,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:51:29,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377376505] [2020-10-12 09:51:29,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:51:29,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:29,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:29,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:29,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:29,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:30,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:34,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:34,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 09:51:34,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:51:34,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 09:51:34,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:34,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 09:51:34,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-12 09:51:34,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 09:51:34,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:34,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:51:34,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:34,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:34,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:34,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:51:34,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:34,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:51:34,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:34,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:34,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:51:34,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:34,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:34,615 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-12 09:51:34,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1377376505] [2020-10-12 09:51:34,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:51:34,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 09:51:34,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936782074] [2020-10-12 09:51:34,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 09:51:34,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:51:34,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 09:51:34,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 09:51:34,619 INFO L87 Difference]: Start difference. First operand 79 states and 85 transitions. Second operand 9 states. [2020-10-12 09:51:34,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:51:34,854 INFO L93 Difference]: Finished difference Result 153 states and 168 transitions. [2020-10-12 09:51:34,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 09:51:34,855 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 73 [2020-10-12 09:51:34,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:51:34,856 INFO L225 Difference]: With dead ends: 153 [2020-10-12 09:51:34,856 INFO L226 Difference]: Without dead ends: 94 [2020-10-12 09:51:34,857 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 09:51:34,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-12 09:51:34,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 89. [2020-10-12 09:51:34,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-12 09:51:34,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 95 transitions. [2020-10-12 09:51:34,865 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 95 transitions. Word has length 73 [2020-10-12 09:51:34,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:51:34,866 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 95 transitions. [2020-10-12 09:51:34,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 09:51:34,866 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 95 transitions. [2020-10-12 09:51:34,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-12 09:51:34,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:51:34,868 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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 09:51:34,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 09:51:34,868 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:51:34,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:51:34,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1731081222, now seen corresponding path program 6 times [2020-10-12 09:51:34,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:51:34,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1927368219] [2020-10-12 09:51:34,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:51:34,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:34,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:34,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:34,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:34,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:36,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:39,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:39,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 09:51:39,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:51:39,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 09:51:39,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:39,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 09:51:39,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 09:51:39,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 09:51:39,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:39,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:51:39,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:39,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:39,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:39,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:51:39,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:39,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 09:51:39,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:39,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:39,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:51:39,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:39,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:40,008 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-12 09:51:40,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1927368219] [2020-10-12 09:51:40,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:51:40,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 09:51:40,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168812865] [2020-10-12 09:51:40,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 09:51:40,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:51:40,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 09:51:40,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-12 09:51:40,012 INFO L87 Difference]: Start difference. First operand 89 states and 95 transitions. Second operand 10 states. [2020-10-12 09:51:40,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:51:40,324 INFO L93 Difference]: Finished difference Result 171 states and 186 transitions. [2020-10-12 09:51:40,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 09:51:40,325 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 83 [2020-10-12 09:51:40,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:51:40,326 INFO L225 Difference]: With dead ends: 171 [2020-10-12 09:51:40,326 INFO L226 Difference]: Without dead ends: 104 [2020-10-12 09:51:40,327 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-12 09:51:40,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-12 09:51:40,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 99. [2020-10-12 09:51:40,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-12 09:51:40,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 105 transitions. [2020-10-12 09:51:40,345 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 105 transitions. Word has length 83 [2020-10-12 09:51:40,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:51:40,345 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 105 transitions. [2020-10-12 09:51:40,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 09:51:40,345 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 105 transitions. [2020-10-12 09:51:40,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-12 09:51:40,348 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:51:40,348 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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 09:51:40,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 09:51:40,348 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:51:40,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:51:40,349 INFO L82 PathProgramCache]: Analyzing trace with hash 724355792, now seen corresponding path program 7 times [2020-10-12 09:51:40,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:51:40,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1094586399] [2020-10-12 09:51:40,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:51:40,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:40,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:40,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:40,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:40,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:42,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:45,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:45,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 09:51:45,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:51:45,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-12 09:51:45,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:45,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 09:51:45,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-12 09:51:45,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 09:51:45,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:45,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:51:45,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:45,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:45,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:45,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:51:45,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:45,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:51:45,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:45,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:45,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:51:45,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:45,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:45,491 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2020-10-12 09:51:45,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1094586399] [2020-10-12 09:51:45,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:51:45,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 09:51:45,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992736776] [2020-10-12 09:51:45,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 09:51:45,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:51:45,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 09:51:45,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-12 09:51:45,493 INFO L87 Difference]: Start difference. First operand 99 states and 105 transitions. Second operand 11 states. [2020-10-12 09:51:45,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:51:45,806 INFO L93 Difference]: Finished difference Result 189 states and 204 transitions. [2020-10-12 09:51:45,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 09:51:45,807 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-10-12 09:51:45,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:51:45,808 INFO L225 Difference]: With dead ends: 189 [2020-10-12 09:51:45,808 INFO L226 Difference]: Without dead ends: 114 [2020-10-12 09:51:45,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-12 09:51:45,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-12 09:51:45,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 109. [2020-10-12 09:51:45,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-12 09:51:45,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 115 transitions. [2020-10-12 09:51:45,826 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 115 transitions. Word has length 93 [2020-10-12 09:51:45,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:51:45,826 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 115 transitions. [2020-10-12 09:51:45,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 09:51:45,826 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 115 transitions. [2020-10-12 09:51:45,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-12 09:51:45,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:51:45,832 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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 09:51:45,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 09:51:45,833 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:51:45,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:51:45,835 INFO L82 PathProgramCache]: Analyzing trace with hash 190477862, now seen corresponding path program 8 times [2020-10-12 09:51:45,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:51:45,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1052649789] [2020-10-12 09:51:45,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:51:45,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:45,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:45,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:45,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:45,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:50,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:50,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 09:51:50,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:51:50,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-12 09:51:50,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:50,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 09:51:50,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-12 09:51:50,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 09:51:50,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:50,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:51:50,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:51,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:51,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:51,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:51:51,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:51,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:51:51,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:51,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:51,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:51:51,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:51,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:51:51,024 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2020-10-12 09:51:51,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1052649789] [2020-10-12 09:51:51,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:51:51,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 09:51:51,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108790335] [2020-10-12 09:51:51,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 09:51:51,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:51:51,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 09:51:51,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-12 09:51:51,038 INFO L87 Difference]: Start difference. First operand 109 states and 115 transitions. Second operand 12 states. [2020-10-12 09:51:51,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:51:51,446 INFO L93 Difference]: Finished difference Result 207 states and 222 transitions. [2020-10-12 09:51:51,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 09:51:51,447 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 103 [2020-10-12 09:51:51,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:51:51,449 INFO L225 Difference]: With dead ends: 207 [2020-10-12 09:51:51,449 INFO L226 Difference]: Without dead ends: 124 [2020-10-12 09:51:51,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-12 09:51:51,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-12 09:51:51,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 119. [2020-10-12 09:51:51,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-12 09:51:51,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 125 transitions. [2020-10-12 09:51:51,470 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 125 transitions. Word has length 103 [2020-10-12 09:51:51,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:51:51,471 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 125 transitions. [2020-10-12 09:51:51,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 09:51:51,471 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 125 transitions. [2020-10-12 09:51:51,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-12 09:51:51,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:51:51,474 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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 09:51:51,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 09:51:51,474 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:51:51,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:51:51,475 INFO L82 PathProgramCache]: Analyzing trace with hash 706031100, now seen corresponding path program 9 times [2020-10-12 09:51:51,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:51:51,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1524320449] [2020-10-12 09:51:51,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:51:51,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:51,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:51,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:51,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:51,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:56,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:56,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:56,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-12 09:51:56,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:51:56,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-12 09:51:56,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:56,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 09:51:56,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-12 09:51:56,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 09:51:56,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:56,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:51:56,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:56,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:56,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:56,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:51:56,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:56,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:51:56,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:56,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:56,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:51:56,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:56,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:56,647 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2020-10-12 09:51:56,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1524320449] [2020-10-12 09:51:56,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:51:56,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 09:51:56,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260898711] [2020-10-12 09:51:56,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 09:51:56,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:51:56,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 09:51:56,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-12 09:51:56,650 INFO L87 Difference]: Start difference. First operand 119 states and 125 transitions. Second operand 13 states. [2020-10-12 09:51:57,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:51:57,008 INFO L93 Difference]: Finished difference Result 225 states and 240 transitions. [2020-10-12 09:51:57,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 09:51:57,008 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 113 [2020-10-12 09:51:57,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:51:57,009 INFO L225 Difference]: With dead ends: 225 [2020-10-12 09:51:57,009 INFO L226 Difference]: Without dead ends: 134 [2020-10-12 09:51:57,010 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-12 09:51:57,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-12 09:51:57,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 129. [2020-10-12 09:51:57,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-12 09:51:57,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 135 transitions. [2020-10-12 09:51:57,018 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 135 transitions. Word has length 113 [2020-10-12 09:51:57,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:51:57,018 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 135 transitions. [2020-10-12 09:51:57,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 09:51:57,018 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 135 transitions. [2020-10-12 09:51:57,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-12 09:51:57,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:51:57,020 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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 09:51:57,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 09:51:57,020 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:51:57,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:51:57,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1465953710, now seen corresponding path program 10 times [2020-10-12 09:51:57,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:51:57,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1888020250] [2020-10-12 09:51:57,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:51:57,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:57,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:57,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:57,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:57,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:52:02,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:52:02,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-12 09:52:02,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:52:02,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-12 09:52:02,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:52:02,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 09:52:02,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 09:52:02,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 09:52:02,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:52:02,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:52:02,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:52:02,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:52:02,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:52:02,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:52:02,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:52:02,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:52:02,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:52:02,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:52:02,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:52:02,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:52:02,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:52:02,235 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2020-10-12 09:52:02,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1888020250] [2020-10-12 09:52:02,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:52:02,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 09:52:02,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205005313] [2020-10-12 09:52:02,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 09:52:02,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:52:02,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 09:52:02,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-12 09:52:02,239 INFO L87 Difference]: Start difference. First operand 129 states and 135 transitions. Second operand 14 states. [2020-10-12 09:52:02,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:52:02,632 INFO L93 Difference]: Finished difference Result 243 states and 258 transitions. [2020-10-12 09:52:02,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 09:52:02,633 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 123 [2020-10-12 09:52:02,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:52:02,635 INFO L225 Difference]: With dead ends: 243 [2020-10-12 09:52:02,635 INFO L226 Difference]: Without dead ends: 144 [2020-10-12 09:52:02,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-12 09:52:02,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-12 09:52:02,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 139. [2020-10-12 09:52:02,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-12 09:52:02,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 145 transitions. [2020-10-12 09:52:02,646 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 145 transitions. Word has length 123 [2020-10-12 09:52:02,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:52:02,646 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 145 transitions. [2020-10-12 09:52:02,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 09:52:02,646 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 145 transitions. [2020-10-12 09:52:02,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-12 09:52:02,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:52:02,648 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 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 09:52:02,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 09:52:02,648 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:52:02,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:52:02,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1321419560, now seen corresponding path program 11 times [2020-10-12 09:52:02,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:52:02,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [399589389] [2020-10-12 09:52:02,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:52:02,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:52:02,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:52:02,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:52:02,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:52:02,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:52:07,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:52:07,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-12 09:52:07,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:52:07,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-12 09:52:07,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:52:07,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 09:52:07,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-12 09:52:07,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 09:52:07,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:52:07,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:52:07,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:52:07,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:52:07,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:52:07,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:52:07,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:52:07,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:52:07,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:52:07,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:52:07,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:52:07,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:52:07,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:52:07,840 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2020-10-12 09:52:07,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [399589389] [2020-10-12 09:52:07,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:52:07,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 09:52:07,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133761125] [2020-10-12 09:52:07,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 09:52:07,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:52:07,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 09:52:07,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-12 09:52:07,842 INFO L87 Difference]: Start difference. First operand 139 states and 145 transitions. Second operand 15 states. [2020-10-12 09:52:08,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:52:08,256 INFO L93 Difference]: Finished difference Result 261 states and 276 transitions. [2020-10-12 09:52:08,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 09:52:08,257 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 133 [2020-10-12 09:52:08,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:52:08,259 INFO L225 Difference]: With dead ends: 261 [2020-10-12 09:52:08,259 INFO L226 Difference]: Without dead ends: 154 [2020-10-12 09:52:08,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-12 09:52:08,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-12 09:52:08,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 149. [2020-10-12 09:52:08,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-12 09:52:08,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 155 transitions. [2020-10-12 09:52:08,267 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 155 transitions. Word has length 133 [2020-10-12 09:52:08,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:52:08,268 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 155 transitions. [2020-10-12 09:52:08,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 09:52:08,268 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 155 transitions. [2020-10-12 09:52:08,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-12 09:52:08,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:52:08,269 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 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 09:52:08,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 09:52:08,270 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:52:08,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:52:08,270 INFO L82 PathProgramCache]: Analyzing trace with hash -2133630850, now seen corresponding path program 12 times [2020-10-12 09:52:08,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:52:08,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11964244] [2020-10-12 09:52:08,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:52:08,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:52:08,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:52:08,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:52:08,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:52:08,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:52:13,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:52:13,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-12 09:52:13,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:52:13,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-12 09:52:13,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:52:13,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 09:52:13,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-12 09:52:13,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 09:52:13,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:52:13,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:52:13,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:52:13,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:52:13,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:52:13,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:52:13,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:52:13,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:52:13,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:52:13,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:52:13,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:52:13,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:52:13,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:52:13,482 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2020-10-12 09:52:13,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11964244] [2020-10-12 09:52:13,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:52:13,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 09:52:13,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166203988] [2020-10-12 09:52:13,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 09:52:13,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:52:13,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 09:52:13,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-12 09:52:13,484 INFO L87 Difference]: Start difference. First operand 149 states and 155 transitions. Second operand 16 states. [2020-10-12 09:52:13,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:52:13,865 INFO L93 Difference]: Finished difference Result 279 states and 294 transitions. [2020-10-12 09:52:13,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 09:52:13,866 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 143 [2020-10-12 09:52:13,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:52:13,868 INFO L225 Difference]: With dead ends: 279 [2020-10-12 09:52:13,868 INFO L226 Difference]: Without dead ends: 164 [2020-10-12 09:52:13,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-12 09:52:13,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-12 09:52:13,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 159. [2020-10-12 09:52:13,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-12 09:52:13,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 165 transitions. [2020-10-12 09:52:13,876 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 165 transitions. Word has length 143 [2020-10-12 09:52:13,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:52:13,876 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 165 transitions. [2020-10-12 09:52:13,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 09:52:13,876 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 165 transitions. [2020-10-12 09:52:13,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-12 09:52:13,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:52:13,878 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 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 09:52:13,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 09:52:13,878 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:52:13,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:52:13,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1247147436, now seen corresponding path program 13 times [2020-10-12 09:52:13,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:52:13,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000568347] [2020-10-12 09:52:13,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:52:13,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:52:13,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:52:13,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:52:13,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:52:13,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:52:18,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:52:18,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-12 09:52:18,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:52:18,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-12 09:52:18,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:52:18,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 09:52:18,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 09:52:18,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 09:52:18,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:52:19,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:52:19,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:52:19,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:52:19,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:52:19,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:52:19,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:52:19,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:52:19,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:52:19,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:52:19,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:52:19,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:52:19,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:52:19,132 INFO L134 CoverageAnalysis]: Checked inductivity of 845 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 676 trivial. 0 not checked. [2020-10-12 09:52:19,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000568347] [2020-10-12 09:52:19,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:52:19,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 09:52:19,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159043206] [2020-10-12 09:52:19,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 09:52:19,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:52:19,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 09:52:19,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-12 09:52:19,135 INFO L87 Difference]: Start difference. First operand 159 states and 165 transitions. Second operand 17 states. [2020-10-12 09:52:19,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:52:19,522 INFO L93 Difference]: Finished difference Result 297 states and 312 transitions. [2020-10-12 09:52:19,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 09:52:19,522 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 153 [2020-10-12 09:52:19,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:52:19,524 INFO L225 Difference]: With dead ends: 297 [2020-10-12 09:52:19,525 INFO L226 Difference]: Without dead ends: 174 [2020-10-12 09:52:19,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-12 09:52:19,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-12 09:52:19,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 169. [2020-10-12 09:52:19,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-12 09:52:19,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 175 transitions. [2020-10-12 09:52:19,533 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 175 transitions. Word has length 153 [2020-10-12 09:52:19,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:52:19,534 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 175 transitions. [2020-10-12 09:52:19,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 09:52:19,534 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 175 transitions. [2020-10-12 09:52:19,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-12 09:52:19,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:52:19,536 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 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 09:52:19,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 09:52:19,536 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:52:19,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:52:19,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1823056042, now seen corresponding path program 14 times [2020-10-12 09:52:19,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:52:19,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308378907] [2020-10-12 09:52:19,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:52:19,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:52:19,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:52:19,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:52:19,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:52:19,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:52:24,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:52:24,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-12 09:52:24,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:52:24,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 09:52:24,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:52:24,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 09:52:24,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-12 09:52:24,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 09:52:24,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:52:24,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:52:24,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:52:24,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:52:24,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:52:24,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:52:24,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:52:24,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:52:24,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:52:24,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:52:24,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:52:24,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:52:24,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:52:24,774 INFO L134 CoverageAnalysis]: Checked inductivity of 980 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2020-10-12 09:52:24,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308378907] [2020-10-12 09:52:24,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:52:24,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 09:52:24,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848848074] [2020-10-12 09:52:24,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 09:52:24,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:52:24,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 09:52:24,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-12 09:52:24,776 INFO L87 Difference]: Start difference. First operand 169 states and 175 transitions. Second operand 18 states. [2020-10-12 09:52:25,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:52:25,234 INFO L93 Difference]: Finished difference Result 315 states and 330 transitions. [2020-10-12 09:52:25,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 09:52:25,234 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 163 [2020-10-12 09:52:25,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:52:25,235 INFO L225 Difference]: With dead ends: 315 [2020-10-12 09:52:25,235 INFO L226 Difference]: Without dead ends: 184 [2020-10-12 09:52:25,236 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-12 09:52:25,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-12 09:52:25,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 179. [2020-10-12 09:52:25,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-10-12 09:52:25,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 185 transitions. [2020-10-12 09:52:25,248 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 185 transitions. Word has length 163 [2020-10-12 09:52:25,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:52:25,248 INFO L479 AbstractCegarLoop]: Abstraction has 179 states and 185 transitions. [2020-10-12 09:52:25,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 09:52:25,248 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 185 transitions. [2020-10-12 09:52:25,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-12 09:52:25,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:52:25,250 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 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 09:52:25,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 09:52:25,251 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:52:25,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:52:25,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1547926656, now seen corresponding path program 15 times [2020-10-12 09:52:25,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:52:25,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [534841185] [2020-10-12 09:52:25,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:52:25,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:52:25,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:52:25,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:52:25,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:52:25,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:52:30,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:52:30,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-12 09:52:30,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:52:30,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5081 [2020-10-12 09:52:30,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:52:30,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 09:52:30,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-12 09:52:30,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 09:52:30,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:52:30,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:52:30,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:52:30,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:52:30,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:52:30,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:52:30,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:52:30,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:52:30,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:52:30,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:52:30,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:52:30,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:52:30,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:52:30,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1125 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2020-10-12 09:52:30,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [534841185] [2020-10-12 09:52:30,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:52:30,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 09:52:30,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091425321] [2020-10-12 09:52:30,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 09:52:30,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:52:30,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 09:52:30,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-12 09:52:30,609 INFO L87 Difference]: Start difference. First operand 179 states and 185 transitions. Second operand 19 states. [2020-10-12 09:52:31,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:52:31,135 INFO L93 Difference]: Finished difference Result 333 states and 348 transitions. [2020-10-12 09:52:31,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 09:52:31,136 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 173 [2020-10-12 09:52:31,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:52:31,137 INFO L225 Difference]: With dead ends: 333 [2020-10-12 09:52:31,138 INFO L226 Difference]: Without dead ends: 194 [2020-10-12 09:52:31,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-12 09:52:31,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-12 09:52:31,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 189. [2020-10-12 09:52:31,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-12 09:52:31,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 195 transitions. [2020-10-12 09:52:31,146 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 195 transitions. Word has length 173 [2020-10-12 09:52:31,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:52:31,146 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 195 transitions. [2020-10-12 09:52:31,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 09:52:31,147 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 195 transitions. [2020-10-12 09:52:31,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-12 09:52:31,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:52:31,148 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 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 09:52:31,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 09:52:31,149 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:52:31,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:52:31,149 INFO L82 PathProgramCache]: Analyzing trace with hash -850062634, now seen corresponding path program 16 times [2020-10-12 09:52:31,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:52:31,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1401315943] [2020-10-12 09:52:31,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:52:31,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:52:31,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:52:31,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:52:31,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:52:31,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:52:36,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:52:36,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-12 09:52:36,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:52:36,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-12 09:52:36,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:52:36,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 09:52:36,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 09:52:36,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 09:52:36,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:52:36,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:52:36,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:52:36,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:52:36,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:52:36,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:52:36,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:52:36,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:52:36,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:52:36,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:52:36,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:52:36,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:52:36,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:52:36,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1280 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2020-10-12 09:52:36,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1401315943] [2020-10-12 09:52:36,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:52:36,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-12 09:52:36,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367660734] [2020-10-12 09:52:36,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 09:52:36,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:52:36,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 09:52:36,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-12 09:52:36,503 INFO L87 Difference]: Start difference. First operand 189 states and 195 transitions. Second operand 20 states. [2020-10-12 09:52:37,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:52:37,037 INFO L93 Difference]: Finished difference Result 351 states and 366 transitions. [2020-10-12 09:52:37,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 09:52:37,038 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 183 [2020-10-12 09:52:37,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:52:37,040 INFO L225 Difference]: With dead ends: 351 [2020-10-12 09:52:37,040 INFO L226 Difference]: Without dead ends: 204 [2020-10-12 09:52:37,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-12 09:52:37,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-12 09:52:37,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 199. [2020-10-12 09:52:37,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-10-12 09:52:37,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 205 transitions. [2020-10-12 09:52:37,052 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 205 transitions. Word has length 183 [2020-10-12 09:52:37,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:52:37,053 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 205 transitions. [2020-10-12 09:52:37,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 09:52:37,053 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 205 transitions. [2020-10-12 09:52:37,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-12 09:52:37,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:52:37,055 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 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 09:52:37,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 09:52:37,055 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:52:37,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:52:37,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1181593260, now seen corresponding path program 17 times [2020-10-12 09:52:37,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:52:37,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665881484] [2020-10-12 09:52:37,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:52:37,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:52:37,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:52:37,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:52:37,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:52:37,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:52:42,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:52:42,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-12 09:52:42,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:52:42,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5289 [2020-10-12 09:52:42,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:52:42,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 09:52:42,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 09:52:42,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 09:52:42,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:52:42,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:52:42,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:52:42,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:52:42,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:52:42,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:52:42,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:52:42,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:52:42,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:52:42,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:52:42,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:52:42,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:52:42,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:52:42,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 1156 trivial. 0 not checked. [2020-10-12 09:52:42,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1665881484] [2020-10-12 09:52:42,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:52:42,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-12 09:52:42,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016537886] [2020-10-12 09:52:42,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-12 09:52:42,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:52:42,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-12 09:52:42,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-12 09:52:42,633 INFO L87 Difference]: Start difference. First operand 199 states and 205 transitions. Second operand 21 states. [2020-10-12 09:52:43,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:52:43,118 INFO L93 Difference]: Finished difference Result 369 states and 384 transitions. [2020-10-12 09:52:43,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 09:52:43,118 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 193 [2020-10-12 09:52:43,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:52:43,120 INFO L225 Difference]: With dead ends: 369 [2020-10-12 09:52:43,121 INFO L226 Difference]: Without dead ends: 214 [2020-10-12 09:52:43,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-12 09:52:43,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-12 09:52:43,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 209. [2020-10-12 09:52:43,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-10-12 09:52:43,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 215 transitions. [2020-10-12 09:52:43,130 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 215 transitions. Word has length 193 [2020-10-12 09:52:43,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:52:43,130 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 215 transitions. [2020-10-12 09:52:43,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-12 09:52:43,131 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 215 transitions. [2020-10-12 09:52:43,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-12 09:52:43,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:52:43,132 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 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 09:52:43,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 09:52:43,133 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:52:43,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:52:43,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1284028162, now seen corresponding path program 18 times [2020-10-12 09:52:43,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:52:43,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1035408213] [2020-10-12 09:52:43,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:52:43,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:52:43,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:52:43,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:52:43,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:52:43,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:52:48,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:52:48,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-12 09:52:48,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:52:48,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5151 [2020-10-12 09:52:48,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:52:48,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 09:52:48,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-12 09:52:48,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 09:52:48,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:52:48,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:52:48,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:52:48,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:52:48,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:52:48,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:52:48,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:52:48,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:52:48,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:52:48,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:52:48,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:52:48,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:52:48,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:52:48,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 1296 trivial. 0 not checked. [2020-10-12 09:52:48,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1035408213] [2020-10-12 09:52:48,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:52:48,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-12 09:52:48,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041899468] [2020-10-12 09:52:48,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-12 09:52:48,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:52:48,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-12 09:52:48,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-12 09:52:48,600 INFO L87 Difference]: Start difference. First operand 209 states and 215 transitions. Second operand 22 states. [2020-10-12 09:52:49,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:52:49,201 INFO L93 Difference]: Finished difference Result 387 states and 402 transitions. [2020-10-12 09:52:49,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 09:52:49,201 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 203 [2020-10-12 09:52:49,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:52:49,203 INFO L225 Difference]: With dead ends: 387 [2020-10-12 09:52:49,203 INFO L226 Difference]: Without dead ends: 224 [2020-10-12 09:52:49,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-12 09:52:49,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-12 09:52:49,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 219. [2020-10-12 09:52:49,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-10-12 09:52:49,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 225 transitions. [2020-10-12 09:52:49,217 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 225 transitions. Word has length 203 [2020-10-12 09:52:49,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:52:49,217 INFO L479 AbstractCegarLoop]: Abstraction has 219 states and 225 transitions. [2020-10-12 09:52:49,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-12 09:52:49,217 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 225 transitions. [2020-10-12 09:52:49,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-12 09:52:49,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:52:49,221 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 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 09:52:49,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 09:52:49,222 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:52:49,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:52:49,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1940949976, now seen corresponding path program 19 times [2020-10-12 09:52:49,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:52:49,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1762661656] [2020-10-12 09:52:49,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:52:49,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:52:49,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:52:49,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:52:49,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:52:49,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:52:54,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:52:54,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-12 09:52:54,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:52:54,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5108 [2020-10-12 09:52:54,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:52:54,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 09:52:54,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-12 09:52:54,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 09:52:54,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:52:54,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:52:54,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:52:54,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:52:54,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:52:54,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:52:54,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:52:54,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:52:54,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:52:54,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:52:54,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:52:54,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:52:54,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:52:54,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1805 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 1444 trivial. 0 not checked. [2020-10-12 09:52:54,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1762661656] [2020-10-12 09:52:54,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:52:54,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-12 09:52:54,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531307746] [2020-10-12 09:52:54,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-12 09:52:54,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:52:54,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-12 09:52:54,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-12 09:52:54,676 INFO L87 Difference]: Start difference. First operand 219 states and 225 transitions. Second operand 23 states. [2020-10-12 09:52:55,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:52:55,284 INFO L93 Difference]: Finished difference Result 405 states and 420 transitions. [2020-10-12 09:52:55,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 09:52:55,285 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 213 [2020-10-12 09:52:55,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:52:55,287 INFO L225 Difference]: With dead ends: 405 [2020-10-12 09:52:55,287 INFO L226 Difference]: Without dead ends: 234 [2020-10-12 09:52:55,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-12 09:52:55,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-10-12 09:52:55,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 229. [2020-10-12 09:52:55,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-10-12 09:52:55,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 235 transitions. [2020-10-12 09:52:55,296 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 235 transitions. Word has length 213 [2020-10-12 09:52:55,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:52:55,297 INFO L479 AbstractCegarLoop]: Abstraction has 229 states and 235 transitions. [2020-10-12 09:52:55,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-12 09:52:55,297 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 235 transitions. [2020-10-12 09:52:55,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-12 09:52:55,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:52:55,298 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 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 09:52:55,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 09:52:55,299 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:52:55,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:52:55,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1669886674, now seen corresponding path program 20 times [2020-10-12 09:52:55,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:52:55,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1293581712] [2020-10-12 09:52:55,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:52:55,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:52:55,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:52:55,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:52:55,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:52:55,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:53:00,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:53:00,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-12 09:53:00,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:53:00,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5371 [2020-10-12 09:53:00,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:53:00,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 09:53:00,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-12 09:53:00,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 09:53:00,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:53:01,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:53:01,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:53:01,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:53:01,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:53:01,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:53:01,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:53:01,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:53:01,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:53:01,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:53:01,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:53:01,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:53:01,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:53:01,060 INFO L134 CoverageAnalysis]: Checked inductivity of 2000 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 1600 trivial. 0 not checked. [2020-10-12 09:53:01,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1293581712] [2020-10-12 09:53:01,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:53:01,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-12 09:53:01,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410450222] [2020-10-12 09:53:01,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-12 09:53:01,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:53:01,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-12 09:53:01,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-12 09:53:01,062 INFO L87 Difference]: Start difference. First operand 229 states and 235 transitions. Second operand 24 states. [2020-10-12 09:53:01,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:53:01,716 INFO L93 Difference]: Finished difference Result 423 states and 438 transitions. [2020-10-12 09:53:01,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 09:53:01,716 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 223 [2020-10-12 09:53:01,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:53:01,718 INFO L225 Difference]: With dead ends: 423 [2020-10-12 09:53:01,718 INFO L226 Difference]: Without dead ends: 244 [2020-10-12 09:53:01,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-12 09:53:01,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-10-12 09:53:01,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 239. [2020-10-12 09:53:01,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-10-12 09:53:01,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 245 transitions. [2020-10-12 09:53:01,729 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 245 transitions. Word has length 223 [2020-10-12 09:53:01,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:53:01,729 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 245 transitions. [2020-10-12 09:53:01,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-12 09:53:01,729 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 245 transitions. [2020-10-12 09:53:01,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-12 09:53:01,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:53:01,731 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 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 09:53:01,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 09:53:01,732 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:53:01,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:53:01,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1777867524, now seen corresponding path program 21 times [2020-10-12 09:53:01,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:53:01,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317443001] [2020-10-12 09:53:01,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:53:01,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:53:01,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:53:01,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:53:01,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:53:01,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:53:06,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:53:06,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-10-12 09:53:06,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:53:06,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5209 [2020-10-12 09:53:06,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:53:06,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 09:53:06,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-12 09:53:06,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 09:53:06,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:53:07,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:53:07,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:53:07,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:53:07,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:53:07,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:53:07,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:53:07,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:53:07,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:53:07,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:53:07,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:53:07,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:53:07,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:53:07,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2205 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 1764 trivial. 0 not checked. [2020-10-12 09:53:07,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317443001] [2020-10-12 09:53:07,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:53:07,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-12 09:53:07,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233970126] [2020-10-12 09:53:07,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-12 09:53:07,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:53:07,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-12 09:53:07,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-12 09:53:07,366 INFO L87 Difference]: Start difference. First operand 239 states and 245 transitions. Second operand 25 states. [2020-10-12 09:53:08,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:53:08,051 INFO L93 Difference]: Finished difference Result 441 states and 456 transitions. [2020-10-12 09:53:08,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 09:53:08,054 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 233 [2020-10-12 09:53:08,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:53:08,056 INFO L225 Difference]: With dead ends: 441 [2020-10-12 09:53:08,056 INFO L226 Difference]: Without dead ends: 254 [2020-10-12 09:53:08,057 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-12 09:53:08,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-10-12 09:53:08,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 249. [2020-10-12 09:53:08,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-10-12 09:53:08,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 255 transitions. [2020-10-12 09:53:08,072 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 255 transitions. Word has length 233 [2020-10-12 09:53:08,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:53:08,072 INFO L479 AbstractCegarLoop]: Abstraction has 249 states and 255 transitions. [2020-10-12 09:53:08,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-12 09:53:08,072 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 255 transitions. [2020-10-12 09:53:08,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-10-12 09:53:08,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:53:08,074 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 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 09:53:08,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 09:53:08,074 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:53:08,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:53:08,075 INFO L82 PathProgramCache]: Analyzing trace with hash 936678746, now seen corresponding path program 22 times [2020-10-12 09:53:08,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:53:08,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [735416242] [2020-10-12 09:53:08,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:53:08,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:53:08,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:53:08,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:53:08,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:53:08,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:53:13,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:53:13,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-12 09:53:13,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:53:13,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5246 [2020-10-12 09:53:13,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:53:13,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 09:53:13,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 09:53:13,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 09:53:13,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:53:13,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:53:13,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:53:13,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:53:13,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:53:13,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:53:13,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:53:13,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:53:13,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:53:13,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:53:13,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:53:13,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:53:13,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:53:13,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2420 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 1936 trivial. 0 not checked. [2020-10-12 09:53:13,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [735416242] [2020-10-12 09:53:13,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:53:13,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-12 09:53:13,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66769698] [2020-10-12 09:53:13,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-12 09:53:13,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:53:13,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-12 09:53:13,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-12 09:53:13,940 INFO L87 Difference]: Start difference. First operand 249 states and 255 transitions. Second operand 26 states. [2020-10-12 09:53:14,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:53:14,656 INFO L93 Difference]: Finished difference Result 459 states and 474 transitions. [2020-10-12 09:53:14,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-12 09:53:14,656 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 243 [2020-10-12 09:53:14,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:53:14,659 INFO L225 Difference]: With dead ends: 459 [2020-10-12 09:53:14,659 INFO L226 Difference]: Without dead ends: 264 [2020-10-12 09:53:14,660 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-12 09:53:14,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-10-12 09:53:14,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 259. [2020-10-12 09:53:14,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-12 09:53:14,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 265 transitions. [2020-10-12 09:53:14,669 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 265 transitions. Word has length 243 [2020-10-12 09:53:14,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:53:14,669 INFO L479 AbstractCegarLoop]: Abstraction has 259 states and 265 transitions. [2020-10-12 09:53:14,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-12 09:53:14,669 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 265 transitions. [2020-10-12 09:53:14,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-12 09:53:14,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:53:14,671 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 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 09:53:14,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 09:53:14,671 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:53:14,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:53:14,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1875420112, now seen corresponding path program 23 times [2020-10-12 09:53:14,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:53:14,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662654563] [2020-10-12 09:53:14,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:53:14,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:53:14,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:53:14,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:53:14,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:53:14,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:53:19,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:53:19,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-10-12 09:53:19,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:53:19,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5249 [2020-10-12 09:53:19,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:53:19,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 09:53:19,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 09:53:19,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 09:53:19,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:53:20,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:53:20,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:53:20,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:53:20,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:53:20,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:53:20,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:53:20,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:53:20,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:53:20,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:53:20,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:53:20,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:53:20,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:53:20,430 INFO L134 CoverageAnalysis]: Checked inductivity of 2645 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 2116 trivial. 0 not checked. [2020-10-12 09:53:20,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662654563] [2020-10-12 09:53:20,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:53:20,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-12 09:53:20,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641948335] [2020-10-12 09:53:20,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-12 09:53:20,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:53:20,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-12 09:53:20,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-12 09:53:20,432 INFO L87 Difference]: Start difference. First operand 259 states and 265 transitions. Second operand 27 states. [2020-10-12 09:53:21,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:53:21,202 INFO L93 Difference]: Finished difference Result 477 states and 492 transitions. [2020-10-12 09:53:21,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-12 09:53:21,202 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 253 [2020-10-12 09:53:21,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:53:21,204 INFO L225 Difference]: With dead ends: 477 [2020-10-12 09:53:21,205 INFO L226 Difference]: Without dead ends: 274 [2020-10-12 09:53:21,206 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-12 09:53:21,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-10-12 09:53:21,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 269. [2020-10-12 09:53:21,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-10-12 09:53:21,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 275 transitions. [2020-10-12 09:53:21,215 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 275 transitions. Word has length 253 [2020-10-12 09:53:21,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:53:21,216 INFO L479 AbstractCegarLoop]: Abstraction has 269 states and 275 transitions. [2020-10-12 09:53:21,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-12 09:53:21,216 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 275 transitions. [2020-10-12 09:53:21,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-10-12 09:53:21,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:53:21,218 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 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 09:53:21,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 09:53:21,218 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:53:21,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:53:21,218 INFO L82 PathProgramCache]: Analyzing trace with hash 567463814, now seen corresponding path program 24 times [2020-10-12 09:53:21,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:53:21,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [974642138] [2020-10-12 09:53:21,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:53:21,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:53:21,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:53:21,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:53:21,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:53:21,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:53:26,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:53:26,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-10-12 09:53:26,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:53:26,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5203 [2020-10-12 09:53:26,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:53:26,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 09:53:26,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-12 09:53:26,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 09:53:26,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:53:26,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:53:26,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:53:26,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:53:26,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:53:26,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:53:26,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:53:26,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:53:26,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:53:26,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:53:26,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:53:26,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:53:26,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:53:26,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2880 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 2304 trivial. 0 not checked. [2020-10-12 09:53:26,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [974642138] [2020-10-12 09:53:26,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:53:26,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-12 09:53:26,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815657805] [2020-10-12 09:53:26,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-12 09:53:26,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:53:27,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-12 09:53:27,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-12 09:53:27,000 INFO L87 Difference]: Start difference. First operand 269 states and 275 transitions. Second operand 28 states. [2020-10-12 09:53:27,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:53:27,776 INFO L93 Difference]: Finished difference Result 495 states and 510 transitions. [2020-10-12 09:53:27,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-12 09:53:27,776 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 263 [2020-10-12 09:53:27,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:53:27,778 INFO L225 Difference]: With dead ends: 495 [2020-10-12 09:53:27,778 INFO L226 Difference]: Without dead ends: 284 [2020-10-12 09:53:27,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-12 09:53:27,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-10-12 09:53:27,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 279. [2020-10-12 09:53:27,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2020-10-12 09:53:27,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 285 transitions. [2020-10-12 09:53:27,789 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 285 transitions. Word has length 263 [2020-10-12 09:53:27,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:53:27,790 INFO L479 AbstractCegarLoop]: Abstraction has 279 states and 285 transitions. [2020-10-12 09:53:27,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-12 09:53:27,790 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 285 transitions. [2020-10-12 09:53:27,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-10-12 09:53:27,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:53:27,792 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 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 09:53:27,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 09:53:27,792 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:53:27,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:53:27,793 INFO L82 PathProgramCache]: Analyzing trace with hash 903958364, now seen corresponding path program 25 times [2020-10-12 09:53:27,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:53:27,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [501791543] [2020-10-12 09:53:27,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:53:27,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:53:27,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:53:27,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:53:27,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:53:27,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:53:33,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:53:33,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-10-12 09:53:33,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:53:33,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5568 [2020-10-12 09:53:33,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:53:33,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 09:53:33,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-12 09:53:33,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 09:53:33,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:53:33,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:53:33,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:53:33,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:53:33,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:53:33,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:53:33,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:53:33,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:53:33,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:53:33,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:53:33,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:53:33,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:53:33,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:53:33,913 INFO L134 CoverageAnalysis]: Checked inductivity of 3125 backedges. 0 proven. 625 refuted. 0 times theorem prover too weak. 2500 trivial. 0 not checked. [2020-10-12 09:53:33,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [501791543] [2020-10-12 09:53:33,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:53:33,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-12 09:53:33,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094039579] [2020-10-12 09:53:33,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-12 09:53:33,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:53:33,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-12 09:53:33,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-12 09:53:33,915 INFO L87 Difference]: Start difference. First operand 279 states and 285 transitions. Second operand 29 states. [2020-10-12 09:53:34,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:53:34,667 INFO L93 Difference]: Finished difference Result 513 states and 528 transitions. [2020-10-12 09:53:34,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-12 09:53:34,668 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 273 [2020-10-12 09:53:34,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:53:34,670 INFO L225 Difference]: With dead ends: 513 [2020-10-12 09:53:34,670 INFO L226 Difference]: Without dead ends: 294 [2020-10-12 09:53:34,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-12 09:53:34,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-10-12 09:53:34,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 289. [2020-10-12 09:53:34,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2020-10-12 09:53:34,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 295 transitions. [2020-10-12 09:53:34,680 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 295 transitions. Word has length 273 [2020-10-12 09:53:34,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:53:34,680 INFO L479 AbstractCegarLoop]: Abstraction has 289 states and 295 transitions. [2020-10-12 09:53:34,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-12 09:53:34,681 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 295 transitions. [2020-10-12 09:53:34,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-10-12 09:53:34,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:53:34,683 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 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 09:53:34,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 09:53:34,683 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:53:34,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:53:34,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1507509326, now seen corresponding path program 26 times [2020-10-12 09:53:34,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:53:34,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [30558232] [2020-10-12 09:53:34,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:53:34,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:53:34,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:53:34,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:53:34,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:53:34,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:53:40,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:53:40,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 291 [2020-10-12 09:53:40,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:53:40,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5645 [2020-10-12 09:53:40,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:53:40,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 09:53:40,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-12 09:53:40,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 09:53:40,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:53:40,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:53:40,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:53:40,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:53:40,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:53:40,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:53:40,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:53:40,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:53:40,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:53:40,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:53:40,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:53:40,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:53:40,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:53:40,969 INFO L134 CoverageAnalysis]: Checked inductivity of 3380 backedges. 0 proven. 676 refuted. 0 times theorem prover too weak. 2704 trivial. 0 not checked. [2020-10-12 09:53:40,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [30558232] [2020-10-12 09:53:40,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:53:40,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-12 09:53:40,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705004756] [2020-10-12 09:53:40,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-12 09:53:40,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:53:40,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-12 09:53:40,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-12 09:53:40,974 INFO L87 Difference]: Start difference. First operand 289 states and 295 transitions. Second operand 30 states. [2020-10-12 09:53:41,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:53:41,806 INFO L93 Difference]: Finished difference Result 531 states and 546 transitions. [2020-10-12 09:53:41,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-12 09:53:41,807 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 283 [2020-10-12 09:53:41,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:53:41,809 INFO L225 Difference]: With dead ends: 531 [2020-10-12 09:53:41,809 INFO L226 Difference]: Without dead ends: 304 [2020-10-12 09:53:41,811 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-12 09:53:41,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-10-12 09:53:41,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 299. [2020-10-12 09:53:41,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2020-10-12 09:53:41,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 305 transitions. [2020-10-12 09:53:41,819 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 305 transitions. Word has length 283 [2020-10-12 09:53:41,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:53:41,819 INFO L479 AbstractCegarLoop]: Abstraction has 299 states and 305 transitions. [2020-10-12 09:53:41,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-12 09:53:41,819 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 305 transitions. [2020-10-12 09:53:41,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-10-12 09:53:41,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:53:41,821 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 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 09:53:41,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 09:53:41,821 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:53:41,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:53:41,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1390998664, now seen corresponding path program 27 times [2020-10-12 09:53:41,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:53:41,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997582413] [2020-10-12 09:53:41,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:53:41,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:53:41,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:53:41,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:53:41,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:53:42,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:53:46,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:53:46,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 301 [2020-10-12 09:53:46,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:53:46,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-12 09:53:46,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:53:46,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-12 09:53:46,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 125 [2020-10-12 09:53:46,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 09:53:46,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:53:47,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:53:47,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:53:47,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:53:47,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:53:47,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:53:47,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:53:47,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:53:47,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:53:47,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:53:47,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:53:47,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:53:47,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:53:47,497 INFO L134 CoverageAnalysis]: Checked inductivity of 3645 backedges. 0 proven. 729 refuted. 0 times theorem prover too weak. 2916 trivial. 0 not checked. [2020-10-12 09:53:47,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997582413] [2020-10-12 09:53:47,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:53:47,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-12 09:53:47,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044633057] [2020-10-12 09:53:47,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-12 09:53:47,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:53:47,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-12 09:53:47,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-12 09:53:47,499 INFO L87 Difference]: Start difference. First operand 299 states and 305 transitions. Second operand 31 states. [2020-10-12 09:53:48,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:53:48,362 INFO L93 Difference]: Finished difference Result 549 states and 564 transitions. [2020-10-12 09:53:48,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-12 09:53:48,363 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 293 [2020-10-12 09:53:48,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:53:48,365 INFO L225 Difference]: With dead ends: 549 [2020-10-12 09:53:48,367 INFO L226 Difference]: Without dead ends: 314 [2020-10-12 09:53:48,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-12 09:53:48,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-10-12 09:53:48,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 309. [2020-10-12 09:53:48,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2020-10-12 09:53:48,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 315 transitions. [2020-10-12 09:53:48,376 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 315 transitions. Word has length 293 [2020-10-12 09:53:48,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:53:48,377 INFO L479 AbstractCegarLoop]: Abstraction has 309 states and 315 transitions. [2020-10-12 09:53:48,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-12 09:53:48,377 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 315 transitions. [2020-10-12 09:53:48,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-10-12 09:53:48,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:53:48,379 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 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 09:53:48,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-12 09:53:48,379 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:53:48,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:53:48,380 INFO L82 PathProgramCache]: Analyzing trace with hash 419355102, now seen corresponding path program 28 times [2020-10-12 09:53:48,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:53:48,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1327112443] [2020-10-12 09:53:48,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:53:48,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:53:48,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:53:48,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:53:48,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:53:48,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:53:53,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:53:53,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-10-12 09:53:53,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:53:53,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-12 09:53:53,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:53:53,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 09:53:53,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 09:53:53,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 09:53:53,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:53:54,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:53:54,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:53:54,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:53:54,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:53:54,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:53:54,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:53:54,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:53:54,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:53:54,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:53:54,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:53:54,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:53:54,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:53:54,134 INFO L134 CoverageAnalysis]: Checked inductivity of 3920 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 3136 trivial. 0 not checked. [2020-10-12 09:53:54,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1327112443] [2020-10-12 09:53:54,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:53:54,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-12 09:53:54,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860585623] [2020-10-12 09:53:54,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-12 09:53:54,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:53:54,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-12 09:53:54,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-12 09:53:54,136 INFO L87 Difference]: Start difference. First operand 309 states and 315 transitions. Second operand 32 states. [2020-10-12 09:53:55,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:53:55,040 INFO L93 Difference]: Finished difference Result 567 states and 582 transitions. [2020-10-12 09:53:55,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-12 09:53:55,041 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 303 [2020-10-12 09:53:55,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:53:55,043 INFO L225 Difference]: With dead ends: 567 [2020-10-12 09:53:55,043 INFO L226 Difference]: Without dead ends: 324 [2020-10-12 09:53:55,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-12 09:53:55,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-10-12 09:53:55,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 319. [2020-10-12 09:53:55,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-10-12 09:53:55,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 325 transitions. [2020-10-12 09:53:55,053 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 325 transitions. Word has length 303 [2020-10-12 09:53:55,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:53:55,053 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 325 transitions. [2020-10-12 09:53:55,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-12 09:53:55,053 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 325 transitions. [2020-10-12 09:53:55,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-10-12 09:53:55,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:53:55,055 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 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 09:53:55,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-12 09:53:55,056 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:53:55,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:53:55,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1203850164, now seen corresponding path program 29 times [2020-10-12 09:53:55,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:53:55,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1101004587] [2020-10-12 09:53:55,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:53:55,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:53:55,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:53:55,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:53:55,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:53:55,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:54:00,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:54:00,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 321 [2020-10-12 09:54:00,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:54:00,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-12 09:54:00,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:54:00,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-12 09:54:00,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-12 09:54:00,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 09:54:00,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:54:00,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:54:00,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:54:00,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:54:00,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:54:00,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:54:00,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:54:00,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:54:00,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:54:00,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:54:00,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:54:00,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:54:00,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:54:00,789 INFO L134 CoverageAnalysis]: Checked inductivity of 4205 backedges. 0 proven. 841 refuted. 0 times theorem prover too weak. 3364 trivial. 0 not checked. [2020-10-12 09:54:00,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1101004587] [2020-10-12 09:54:00,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:54:00,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-12 09:54:00,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413931299] [2020-10-12 09:54:00,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-12 09:54:00,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:54:00,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-12 09:54:00,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 09:54:00,791 INFO L87 Difference]: Start difference. First operand 319 states and 325 transitions. Second operand 33 states. [2020-10-12 09:54:01,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:54:01,666 INFO L93 Difference]: Finished difference Result 585 states and 600 transitions. [2020-10-12 09:54:01,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-12 09:54:01,666 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 313 [2020-10-12 09:54:01,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:54:01,668 INFO L225 Difference]: With dead ends: 585 [2020-10-12 09:54:01,668 INFO L226 Difference]: Without dead ends: 334 [2020-10-12 09:54:01,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 09:54:01,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2020-10-12 09:54:01,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 329. [2020-10-12 09:54:01,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2020-10-12 09:54:01,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 335 transitions. [2020-10-12 09:54:01,677 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 335 transitions. Word has length 313 [2020-10-12 09:54:01,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:54:01,677 INFO L479 AbstractCegarLoop]: Abstraction has 329 states and 335 transitions. [2020-10-12 09:54:01,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-12 09:54:01,678 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 335 transitions. [2020-10-12 09:54:01,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-10-12 09:54:01,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:54:01,680 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 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 09:54:01,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-12 09:54:01,680 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:54:01,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:54:01,681 INFO L82 PathProgramCache]: Analyzing trace with hash -1760384502, now seen corresponding path program 30 times [2020-10-12 09:54:01,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:54:01,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2004373852] [2020-10-12 09:54:01,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:54:01,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:54:01,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:54:01,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:54:01,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:54:01,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:54:07,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:54:07,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 331 [2020-10-12 09:54:07,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:54:07,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5681 [2020-10-12 09:54:07,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:54:07,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-12 09:54:07,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 09:54:07,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 09:54:07,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:54:08,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:54:08,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:54:08,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:54:08,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:54:08,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:54:08,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:54:08,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:54:08,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:54:08,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:54:08,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:54:08,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:54:08,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:54:08,118 INFO L134 CoverageAnalysis]: Checked inductivity of 4500 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 3600 trivial. 0 not checked. [2020-10-12 09:54:08,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2004373852] [2020-10-12 09:54:08,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:54:08,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-12 09:54:08,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576620017] [2020-10-12 09:54:08,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-12 09:54:08,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:54:08,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-12 09:54:08,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-12 09:54:08,121 INFO L87 Difference]: Start difference. First operand 329 states and 335 transitions. Second operand 34 states. [2020-10-12 09:54:09,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:54:09,021 INFO L93 Difference]: Finished difference Result 603 states and 618 transitions. [2020-10-12 09:54:09,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-12 09:54:09,026 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 323 [2020-10-12 09:54:09,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:54:09,027 INFO L225 Difference]: With dead ends: 603 [2020-10-12 09:54:09,027 INFO L226 Difference]: Without dead ends: 344 [2020-10-12 09:54:09,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-12 09:54:09,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2020-10-12 09:54:09,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 339. [2020-10-12 09:54:09,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2020-10-12 09:54:09,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 345 transitions. [2020-10-12 09:54:09,036 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 345 transitions. Word has length 323 [2020-10-12 09:54:09,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:54:09,037 INFO L479 AbstractCegarLoop]: Abstraction has 339 states and 345 transitions. [2020-10-12 09:54:09,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-12 09:54:09,037 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 345 transitions. [2020-10-12 09:54:09,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-10-12 09:54:09,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:54:09,039 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 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 09:54:09,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-12 09:54:09,039 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:54:09,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:54:09,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1654827808, now seen corresponding path program 31 times [2020-10-12 09:54:09,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:54:09,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1191417821] [2020-10-12 09:54:09,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:54:09,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:54:09,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:54:09,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:54:09,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:54:09,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:54:15,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:54:15,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 341 [2020-10-12 09:54:15,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:54:15,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6167 [2020-10-12 09:54:15,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:54:15,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-12 09:54:15,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 09:54:15,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 09:54:15,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:54:16,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:54:16,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:54:16,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:54:16,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:54:16,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:54:16,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:54:16,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:54:16,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:54:16,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:54:16,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:54:16,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:54:16,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:54:16,066 INFO L134 CoverageAnalysis]: Checked inductivity of 4805 backedges. 0 proven. 961 refuted. 0 times theorem prover too weak. 3844 trivial. 0 not checked. [2020-10-12 09:54:16,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1191417821] [2020-10-12 09:54:16,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:54:16,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-12 09:54:16,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19215793] [2020-10-12 09:54:16,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-12 09:54:16,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:54:16,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-12 09:54:16,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 09:54:16,069 INFO L87 Difference]: Start difference. First operand 339 states and 345 transitions. Second operand 35 states. [2020-10-12 09:54:17,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:54:17,035 INFO L93 Difference]: Finished difference Result 621 states and 636 transitions. [2020-10-12 09:54:17,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-12 09:54:17,036 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 333 [2020-10-12 09:54:17,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:54:17,038 INFO L225 Difference]: With dead ends: 621 [2020-10-12 09:54:17,038 INFO L226 Difference]: Without dead ends: 354 [2020-10-12 09:54:17,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 09:54:17,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-10-12 09:54:17,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 349. [2020-10-12 09:54:17,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2020-10-12 09:54:17,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 355 transitions. [2020-10-12 09:54:17,047 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 355 transitions. Word has length 333 [2020-10-12 09:54:17,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:54:17,047 INFO L479 AbstractCegarLoop]: Abstraction has 349 states and 355 transitions. [2020-10-12 09:54:17,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-12 09:54:17,048 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 355 transitions. [2020-10-12 09:54:17,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2020-10-12 09:54:17,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:54:17,050 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 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 09:54:17,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-12 09:54:17,050 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:54:17,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:54:17,051 INFO L82 PathProgramCache]: Analyzing trace with hash -980177866, now seen corresponding path program 32 times [2020-10-12 09:54:17,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:54:17,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1423245991] [2020-10-12 09:54:17,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:54:17,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:54:17,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:54:17,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:54:17,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:54:17,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:54:24,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:54:24,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 351 [2020-10-12 09:54:24,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:54:24,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7139 [2020-10-12 09:54:24,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:54:24,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-12 09:54:24,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 145 [2020-10-12 09:54:24,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 09:54:24,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:54:24,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:54:24,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:54:24,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:54:24,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:54:24,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:54:24,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:54:24,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:54:24,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:54:24,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:54:24,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:54:24,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:54:24,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:54:25,016 INFO L134 CoverageAnalysis]: Checked inductivity of 5120 backedges. 0 proven. 1024 refuted. 0 times theorem prover too weak. 4096 trivial. 0 not checked. [2020-10-12 09:54:25,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1423245991] [2020-10-12 09:54:25,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:54:25,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-12 09:54:25,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761630387] [2020-10-12 09:54:25,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-12 09:54:25,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:54:25,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-12 09:54:25,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-12 09:54:25,018 INFO L87 Difference]: Start difference. First operand 349 states and 355 transitions. Second operand 36 states. [2020-10-12 09:54:26,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:54:26,080 INFO L93 Difference]: Finished difference Result 639 states and 654 transitions. [2020-10-12 09:54:26,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-12 09:54:26,081 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 343 [2020-10-12 09:54:26,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:54:26,083 INFO L225 Difference]: With dead ends: 639 [2020-10-12 09:54:26,083 INFO L226 Difference]: Without dead ends: 364 [2020-10-12 09:54:26,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-12 09:54:26,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-12 09:54:26,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 359. [2020-10-12 09:54:26,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2020-10-12 09:54:26,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 365 transitions. [2020-10-12 09:54:26,092 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 365 transitions. Word has length 343 [2020-10-12 09:54:26,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:54:26,093 INFO L479 AbstractCegarLoop]: Abstraction has 359 states and 365 transitions. [2020-10-12 09:54:26,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-12 09:54:26,093 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 365 transitions. [2020-10-12 09:54:26,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2020-10-12 09:54:26,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:54:26,095 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 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 09:54:26,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-12 09:54:26,096 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:54:26,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:54:26,096 INFO L82 PathProgramCache]: Analyzing trace with hash -986705908, now seen corresponding path program 33 times [2020-10-12 09:54:26,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:54:26,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1273013070] [2020-10-12 09:54:26,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:54:26,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:54:26,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:54:26,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:54:26,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:54:26,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:54:32,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:54:32,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 361 [2020-10-12 09:54:32,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:54:32,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6754 [2020-10-12 09:54:32,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:54:32,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-12 09:54:32,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 149 [2020-10-12 09:54:32,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 09:54:32,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:54:33,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:54:33,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:54:33,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:54:33,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:54:33,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:54:33,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:54:33,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:54:33,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:54:33,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:54:33,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:54:33,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:54:33,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:54:33,725 INFO L134 CoverageAnalysis]: Checked inductivity of 5445 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 4356 trivial. 0 not checked. [2020-10-12 09:54:33,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1273013070] [2020-10-12 09:54:33,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:54:33,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-12 09:54:33,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483010129] [2020-10-12 09:54:33,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-12 09:54:33,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:54:33,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-12 09:54:33,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-12 09:54:33,729 INFO L87 Difference]: Start difference. First operand 359 states and 365 transitions. Second operand 37 states. [2020-10-12 09:54:34,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:54:34,854 INFO L93 Difference]: Finished difference Result 657 states and 672 transitions. [2020-10-12 09:54:34,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-12 09:54:34,855 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 353 [2020-10-12 09:54:34,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:54:34,857 INFO L225 Difference]: With dead ends: 657 [2020-10-12 09:54:34,857 INFO L226 Difference]: Without dead ends: 374 [2020-10-12 09:54:34,859 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-12 09:54:34,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2020-10-12 09:54:34,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 369. [2020-10-12 09:54:34,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2020-10-12 09:54:34,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 375 transitions. [2020-10-12 09:54:34,867 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 375 transitions. Word has length 353 [2020-10-12 09:54:34,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:54:34,868 INFO L479 AbstractCegarLoop]: Abstraction has 369 states and 375 transitions. [2020-10-12 09:54:34,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-12 09:54:34,868 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 375 transitions. [2020-10-12 09:54:34,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2020-10-12 09:54:34,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:54:34,871 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 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 09:54:34,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-12 09:54:34,871 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:54:34,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:54:34,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1842028446, now seen corresponding path program 34 times [2020-10-12 09:54:34,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:54:34,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [455191156] [2020-10-12 09:54:34,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:54:34,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:54:34,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:54:34,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:54:34,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:54:35,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:54:40,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:54:40,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 371 [2020-10-12 09:54:40,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:54:40,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5515 [2020-10-12 09:54:40,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:54:40,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-12 09:54:40,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-12 09:54:40,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 09:54:40,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:54:41,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:54:41,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:54:41,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:54:41,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:54:41,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:54:41,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:54:41,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:54:41,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:54:41,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:54:41,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:54:41,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:54:41,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:54:41,314 INFO L134 CoverageAnalysis]: Checked inductivity of 5780 backedges. 0 proven. 1156 refuted. 0 times theorem prover too weak. 4624 trivial. 0 not checked. [2020-10-12 09:54:41,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [455191156] [2020-10-12 09:54:41,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:54:41,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-12 09:54:41,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427145188] [2020-10-12 09:54:41,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-12 09:54:41,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:54:41,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-12 09:54:41,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-12 09:54:41,316 INFO L87 Difference]: Start difference. First operand 369 states and 375 transitions. Second operand 38 states. [2020-10-12 09:54:42,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:54:42,308 INFO L93 Difference]: Finished difference Result 675 states and 690 transitions. [2020-10-12 09:54:42,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-12 09:54:42,309 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 363 [2020-10-12 09:54:42,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:54:42,312 INFO L225 Difference]: With dead ends: 675 [2020-10-12 09:54:42,312 INFO L226 Difference]: Without dead ends: 384 [2020-10-12 09:54:42,314 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-12 09:54:42,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2020-10-12 09:54:42,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 379. [2020-10-12 09:54:42,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2020-10-12 09:54:42,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 385 transitions. [2020-10-12 09:54:42,321 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 385 transitions. Word has length 363 [2020-10-12 09:54:42,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:54:42,322 INFO L479 AbstractCegarLoop]: Abstraction has 379 states and 385 transitions. [2020-10-12 09:54:42,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-12 09:54:42,322 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 385 transitions. [2020-10-12 09:54:42,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2020-10-12 09:54:42,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:54:42,325 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 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 09:54:42,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-12 09:54:42,325 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:54:42,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:54:42,325 INFO L82 PathProgramCache]: Analyzing trace with hash -651395784, now seen corresponding path program 35 times [2020-10-12 09:54:42,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:54:42,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1154674005] [2020-10-12 09:54:42,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:54:42,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:54:42,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:54:42,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:54:42,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:54:42,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:54:47,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:54:47,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 381 [2020-10-12 09:54:47,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:54:47,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5286 [2020-10-12 09:54:47,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:54:47,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-12 09:54:47,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-12 09:54:47,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 09:54:47,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:54:48,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:54:48,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:54:48,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:54:48,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:54:48,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:54:48,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:54:48,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:54:48,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:54:48,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:54:48,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:54:48,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:54:48,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:54:48,588 INFO L134 CoverageAnalysis]: Checked inductivity of 6125 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2020-10-12 09:54:48,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1154674005] [2020-10-12 09:54:48,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:54:48,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-12 09:54:48,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659221525] [2020-10-12 09:54:48,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-12 09:54:48,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:54:48,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-12 09:54:48,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-12 09:54:48,590 INFO L87 Difference]: Start difference. First operand 379 states and 385 transitions. Second operand 39 states. [2020-10-12 09:54:49,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:54:49,728 INFO L93 Difference]: Finished difference Result 693 states and 708 transitions. [2020-10-12 09:54:49,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-12 09:54:49,735 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 373 [2020-10-12 09:54:49,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:54:49,737 INFO L225 Difference]: With dead ends: 693 [2020-10-12 09:54:49,737 INFO L226 Difference]: Without dead ends: 394 [2020-10-12 09:54:49,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-12 09:54:49,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-10-12 09:54:49,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 389. [2020-10-12 09:54:49,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2020-10-12 09:54:49,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 395 transitions. [2020-10-12 09:54:49,747 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 395 transitions. Word has length 373 [2020-10-12 09:54:49,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:54:49,748 INFO L479 AbstractCegarLoop]: Abstraction has 389 states and 395 transitions. [2020-10-12 09:54:49,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-12 09:54:49,748 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 395 transitions. [2020-10-12 09:54:49,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2020-10-12 09:54:49,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:54:49,751 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 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 09:54:49,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-12 09:54:49,751 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:54:49,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:54:49,752 INFO L82 PathProgramCache]: Analyzing trace with hash -215398770, now seen corresponding path program 36 times [2020-10-12 09:54:49,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:54:49,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952001116] [2020-10-12 09:54:49,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:54:49,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:54:49,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:54:49,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:54:49,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:54:50,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:54:55,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:54:55,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 391 [2020-10-12 09:54:55,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:54:55,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5267 [2020-10-12 09:54:55,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:54:55,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-12 09:54:55,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-12 09:54:55,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 09:54:55,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:54:55,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:54:55,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:54:55,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:54:55,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:54:55,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:54:55,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:54:55,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:54:55,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:54:55,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:54:55,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:54:55,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:54:55,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:54:55,993 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 0 proven. 1296 refuted. 0 times theorem prover too weak. 5184 trivial. 0 not checked. [2020-10-12 09:54:55,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1952001116] [2020-10-12 09:54:55,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:54:55,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-12 09:54:55,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408980677] [2020-10-12 09:54:55,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-12 09:54:55,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:54:55,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-12 09:54:55,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-12 09:54:55,996 INFO L87 Difference]: Start difference. First operand 389 states and 395 transitions. Second operand 40 states. [2020-10-12 09:54:57,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:54:57,105 INFO L93 Difference]: Finished difference Result 711 states and 726 transitions. [2020-10-12 09:54:57,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-12 09:54:57,106 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 383 [2020-10-12 09:54:57,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:54:57,111 INFO L225 Difference]: With dead ends: 711 [2020-10-12 09:54:57,111 INFO L226 Difference]: Without dead ends: 404 [2020-10-12 09:54:57,112 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-12 09:54:57,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2020-10-12 09:54:57,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 399. [2020-10-12 09:54:57,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2020-10-12 09:54:57,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 405 transitions. [2020-10-12 09:54:57,124 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 405 transitions. Word has length 383 [2020-10-12 09:54:57,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:54:57,125 INFO L479 AbstractCegarLoop]: Abstraction has 399 states and 405 transitions. [2020-10-12 09:54:57,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-12 09:54:57,125 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 405 transitions. [2020-10-12 09:54:57,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2020-10-12 09:54:57,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:54:57,128 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 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 09:54:57,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-12 09:54:57,128 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:54:57,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:54:57,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1539677284, now seen corresponding path program 37 times [2020-10-12 09:54:57,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:54:57,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [466258306] [2020-10-12 09:54:57,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:54:57,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:54:57,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:54:57,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:54:57,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:54:57,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:55:02,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:55:02,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 401 [2020-10-12 09:55:02,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:55:02,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5077 [2020-10-12 09:55:02,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:55:02,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-12 09:55:02,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-12 09:55:02,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 09:55:02,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0