/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/locks/test_locks_15-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 15:58:27,842 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 15:58:27,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 15:58:27,881 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 15:58:27,882 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 15:58:27,883 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 15:58:27,884 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 15:58:27,886 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 15:58:27,887 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 15:58:27,888 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 15:58:27,889 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 15:58:27,890 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 15:58:27,890 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 15:58:27,891 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 15:58:27,892 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 15:58:27,893 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 15:58:27,894 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 15:58:27,895 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 15:58:27,896 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 15:58:27,898 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 15:58:27,899 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 15:58:27,900 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 15:58:27,901 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 15:58:27,902 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 15:58:27,904 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 15:58:27,905 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 15:58:27,905 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 15:58:27,906 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 15:58:27,906 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 15:58:27,907 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 15:58:27,907 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 15:58:27,908 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 15:58:27,909 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 15:58:27,909 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 15:58:27,910 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 15:58:27,910 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 15:58:27,911 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 15:58:27,911 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 15:58:27,911 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 15:58:27,912 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 15:58:27,913 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 15:58:27,914 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 15:58:27,957 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 15:58:27,957 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 15:58:27,958 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 15:58:27,959 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 15:58:27,959 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 15:58:27,962 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 15:58:27,962 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 15:58:27,962 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 15:58:27,963 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 15:58:27,963 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 15:58:27,963 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 15:58:27,963 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 15:58:27,963 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 15:58:27,963 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 15:58:27,964 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 15:58:27,964 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 15:58:27,964 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 15:58:27,964 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 15:58:27,964 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 15:58:27,965 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 15:58:27,965 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 15:58:27,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:58:27,967 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 15:58:27,967 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 15:58:27,967 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 15:58:27,967 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 15:58:27,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 15:58:27,968 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 15:58:27,968 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 15:58:27,968 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 15:58:28,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 15:58:28,266 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 15:58:28,271 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 15:58:28,272 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 15:58:28,273 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 15:58:28,273 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_15-2.c [2020-10-12 15:58:28,332 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c666ec2d/ea7f175069fb4656a4342bc7a705d94d/FLAG3dde2ce09 [2020-10-12 15:58:28,732 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 15:58:28,733 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_15-2.c [2020-10-12 15:58:28,741 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c666ec2d/ea7f175069fb4656a4342bc7a705d94d/FLAG3dde2ce09 [2020-10-12 15:58:29,096 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c666ec2d/ea7f175069fb4656a4342bc7a705d94d [2020-10-12 15:58:29,106 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 15:58:29,107 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 15:58:29,108 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 15:58:29,108 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 15:58:29,112 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 15:58:29,113 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:58:29" (1/1) ... [2020-10-12 15:58:29,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7be095dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:58:29, skipping insertion in model container [2020-10-12 15:58:29,116 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:58:29" (1/1) ... [2020-10-12 15:58:29,123 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 15:58:29,149 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 15:58:29,419 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:58:29,425 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 15:58:29,482 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:58:29,518 INFO L208 MainTranslator]: Completed translation [2020-10-12 15:58:29,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:58:29 WrapperNode [2020-10-12 15:58:29,519 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 15:58:29,519 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 15:58:29,520 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 15:58:29,520 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 15:58:29,530 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:58:29" (1/1) ... [2020-10-12 15:58:29,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:58:29" (1/1) ... [2020-10-12 15:58:29,614 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:58:29" (1/1) ... [2020-10-12 15:58:29,615 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:58:29" (1/1) ... [2020-10-12 15:58:29,622 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:58:29" (1/1) ... [2020-10-12 15:58:29,643 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:58:29" (1/1) ... [2020-10-12 15:58:29,644 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:58:29" (1/1) ... [2020-10-12 15:58:29,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 15:58:29,651 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 15:58:29,651 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 15:58:29,651 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 15:58:29,653 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:58:29" (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 15:58:29,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 15:58:29,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 15:58:29,717 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 15:58:29,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 15:58:29,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 15:58:29,718 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 15:58:29,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 15:58:29,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 15:58:30,113 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 15:58:30,113 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 15:58:30,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:58:30 BoogieIcfgContainer [2020-10-12 15:58:30,118 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 15:58:30,119 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 15:58:30,119 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 15:58:30,124 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 15:58:30,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:58:29" (1/3) ... [2020-10-12 15:58:30,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cffb618 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:58:30, skipping insertion in model container [2020-10-12 15:58:30,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:58:29" (2/3) ... [2020-10-12 15:58:30,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cffb618 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:58:30, skipping insertion in model container [2020-10-12 15:58:30,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:58:30" (3/3) ... [2020-10-12 15:58:30,129 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_15-2.c [2020-10-12 15:58:30,141 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 15:58:30,154 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 15:58:30,167 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 15:58:30,189 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 15:58:30,189 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 15:58:30,189 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 15:58:30,189 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 15:58:30,189 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 15:58:30,190 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 15:58:30,190 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 15:58:30,190 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 15:58:30,206 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2020-10-12 15:58:30,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-12 15:58:30,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:30,214 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] [2020-10-12 15:58:30,214 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:30,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:30,219 INFO L82 PathProgramCache]: Analyzing trace with hash -563360106, now seen corresponding path program 1 times [2020-10-12 15:58:30,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:30,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [643251491] [2020-10-12 15:58:30,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:30,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:30,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:30,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:30,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 15:58:30,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:30,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-12 15:58:30,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:30,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:30,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 15:58:30,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 15:58:30,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 15:58:30,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:30,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:30,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:30,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:30,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:30,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:30,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:58:30,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:30,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:30,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:30,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:30,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:58:30,694 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 15:58:30,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [643251491] [2020-10-12 15:58:30,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:30,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:30,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964005219] [2020-10-12 15:58:30,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:30,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:30,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:30,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:30,720 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 3 states. [2020-10-12 15:58:30,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:30,779 INFO L93 Difference]: Finished difference Result 117 states and 210 transitions. [2020-10-12 15:58:30,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:30,781 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-10-12 15:58:30,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:30,794 INFO L225 Difference]: With dead ends: 117 [2020-10-12 15:58:30,794 INFO L226 Difference]: Without dead ends: 102 [2020-10-12 15:58:30,798 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:30,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-12 15:58:30,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 70. [2020-10-12 15:58:30,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-12 15:58:30,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 129 transitions. [2020-10-12 15:58:30,842 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 129 transitions. Word has length 25 [2020-10-12 15:58:30,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:30,843 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 129 transitions. [2020-10-12 15:58:30,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:30,843 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 129 transitions. [2020-10-12 15:58:30,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-12 15:58:30,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:30,845 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] [2020-10-12 15:58:30,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 15:58:30,845 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:30,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:30,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1737462484, now seen corresponding path program 1 times [2020-10-12 15:58:30,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:30,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [581545948] [2020-10-12 15:58:30,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:30,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:30,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:30,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:30,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 15:58:30,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:30,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-12 15:58:30,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:30,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:30,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 15:58:31,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:58:31,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:58:31,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:31,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:31,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:31,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:31,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:31,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:31,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:58:31,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:31,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:31,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:31,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:31,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:58:31,033 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 15:58:31,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [581545948] [2020-10-12 15:58:31,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:31,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:31,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218622108] [2020-10-12 15:58:31,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:31,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:31,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:31,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:31,037 INFO L87 Difference]: Start difference. First operand 70 states and 129 transitions. Second operand 3 states. [2020-10-12 15:58:31,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:31,064 INFO L93 Difference]: Finished difference Result 167 states and 312 transitions. [2020-10-12 15:58:31,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:31,065 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-10-12 15:58:31,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:31,067 INFO L225 Difference]: With dead ends: 167 [2020-10-12 15:58:31,067 INFO L226 Difference]: Without dead ends: 102 [2020-10-12 15:58:31,069 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:31,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-12 15:58:31,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2020-10-12 15:58:31,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-12 15:58:31,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 185 transitions. [2020-10-12 15:58:31,086 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 185 transitions. Word has length 25 [2020-10-12 15:58:31,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:31,087 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 185 transitions. [2020-10-12 15:58:31,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:31,089 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 185 transitions. [2020-10-12 15:58:31,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-12 15:58:31,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:31,090 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] [2020-10-12 15:58:31,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 15:58:31,091 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:31,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:31,091 INFO L82 PathProgramCache]: Analyzing trace with hash -284082342, now seen corresponding path program 1 times [2020-10-12 15:58:31,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:31,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2093921583] [2020-10-12 15:58:31,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:31,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:31,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:31,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:31,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:31,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 15:58:31,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:58:31,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-12 15:58:31,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:31,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:31,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 15:58:31,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:58:31,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:58:31,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:31,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:31,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:31,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:31,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:31,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:31,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:58:31,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:31,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:31,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:31,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:31,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:58:31,316 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 15:58:31,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2093921583] [2020-10-12 15:58:31,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:31,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:31,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102771753] [2020-10-12 15:58:31,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:31,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:31,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:31,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:31,320 INFO L87 Difference]: Start difference. First operand 100 states and 185 transitions. Second operand 3 states. [2020-10-12 15:58:31,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:31,342 INFO L93 Difference]: Finished difference Result 153 states and 279 transitions. [2020-10-12 15:58:31,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:31,343 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-10-12 15:58:31,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:31,344 INFO L225 Difference]: With dead ends: 153 [2020-10-12 15:58:31,344 INFO L226 Difference]: Without dead ends: 105 [2020-10-12 15:58:31,345 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:31,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-12 15:58:31,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2020-10-12 15:58:31,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-12 15:58:31,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 187 transitions. [2020-10-12 15:58:31,357 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 187 transitions. Word has length 26 [2020-10-12 15:58:31,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:31,357 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 187 transitions. [2020-10-12 15:58:31,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:31,358 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 187 transitions. [2020-10-12 15:58:31,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-12 15:58:31,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:31,359 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] [2020-10-12 15:58:31,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 15:58:31,360 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:31,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:31,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1973026084, now seen corresponding path program 1 times [2020-10-12 15:58:31,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:31,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344099837] [2020-10-12 15:58:31,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:31,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:31,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:31,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:31,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 15:58:31,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:31,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-12 15:58:31,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:31,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:31,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 15:58:31,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 15:58:31,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:31,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:31,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:31,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:31,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:31,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:31,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:31,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:58:31,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:31,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:31,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:31,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:31,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:31,460 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 15:58:31,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344099837] [2020-10-12 15:58:31,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:31,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:31,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022102665] [2020-10-12 15:58:31,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:31,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:31,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:31,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:31,462 INFO L87 Difference]: Start difference. First operand 103 states and 187 transitions. Second operand 3 states. [2020-10-12 15:58:31,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:31,483 INFO L93 Difference]: Finished difference Result 196 states and 360 transitions. [2020-10-12 15:58:31,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:31,484 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-10-12 15:58:31,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:31,486 INFO L225 Difference]: With dead ends: 196 [2020-10-12 15:58:31,486 INFO L226 Difference]: Without dead ends: 194 [2020-10-12 15:58:31,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:31,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-12 15:58:31,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 136. [2020-10-12 15:58:31,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-12 15:58:31,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 248 transitions. [2020-10-12 15:58:31,505 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 248 transitions. Word has length 26 [2020-10-12 15:58:31,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:31,506 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 248 transitions. [2020-10-12 15:58:31,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:31,506 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 248 transitions. [2020-10-12 15:58:31,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-12 15:58:31,507 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:31,508 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] [2020-10-12 15:58:31,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 15:58:31,509 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:31,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:31,509 INFO L82 PathProgramCache]: Analyzing trace with hash 327796506, now seen corresponding path program 1 times [2020-10-12 15:58:31,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:31,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695310535] [2020-10-12 15:58:31,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:31,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:31,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:31,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:31,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 15:58:31,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:31,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-12 15:58:31,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:31,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:31,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 15:58:31,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:58:31,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:58:31,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:31,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:31,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:31,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:31,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:31,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:31,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:58:31,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:31,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:31,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:31,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:31,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:31,616 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 15:58:31,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1695310535] [2020-10-12 15:58:31,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:31,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:31,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499584523] [2020-10-12 15:58:31,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:31,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:31,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:31,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:31,619 INFO L87 Difference]: Start difference. First operand 136 states and 248 transitions. Second operand 3 states. [2020-10-12 15:58:31,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:31,647 INFO L93 Difference]: Finished difference Result 324 states and 598 transitions. [2020-10-12 15:58:31,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:31,648 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-10-12 15:58:31,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:31,650 INFO L225 Difference]: With dead ends: 324 [2020-10-12 15:58:31,650 INFO L226 Difference]: Without dead ends: 196 [2020-10-12 15:58:31,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:31,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-12 15:58:31,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 194. [2020-10-12 15:58:31,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-12 15:58:31,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 354 transitions. [2020-10-12 15:58:31,679 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 354 transitions. Word has length 26 [2020-10-12 15:58:31,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:31,682 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 354 transitions. [2020-10-12 15:58:31,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:31,683 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 354 transitions. [2020-10-12 15:58:31,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-12 15:58:31,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:31,684 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] [2020-10-12 15:58:31,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 15:58:31,685 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:31,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:31,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1034054359, now seen corresponding path program 1 times [2020-10-12 15:58:31,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:31,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157228309] [2020-10-12 15:58:31,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:31,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:31,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:31,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:31,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:31,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 15:58:31,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:58:31,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-12 15:58:31,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:31,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:31,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 15:58:31,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:58:31,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:31,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:31,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:31,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:31,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:31,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:31,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:31,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:58:31,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:31,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:31,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:31,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:31,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:31,833 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 15:58:31,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [157228309] [2020-10-12 15:58:31,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:31,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:31,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361485521] [2020-10-12 15:58:31,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:31,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:31,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:31,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:31,835 INFO L87 Difference]: Start difference. First operand 194 states and 354 transitions. Second operand 3 states. [2020-10-12 15:58:31,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:31,851 INFO L93 Difference]: Finished difference Result 291 states and 529 transitions. [2020-10-12 15:58:31,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:31,852 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-12 15:58:31,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:31,853 INFO L225 Difference]: With dead ends: 291 [2020-10-12 15:58:31,854 INFO L226 Difference]: Without dead ends: 198 [2020-10-12 15:58:31,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:31,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-12 15:58:31,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 196. [2020-10-12 15:58:31,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-12 15:58:31,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 354 transitions. [2020-10-12 15:58:31,864 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 354 transitions. Word has length 27 [2020-10-12 15:58:31,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:31,864 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 354 transitions. [2020-10-12 15:58:31,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:31,864 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 354 transitions. [2020-10-12 15:58:31,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-12 15:58:31,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:31,866 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] [2020-10-12 15:58:31,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 15:58:31,866 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:31,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:31,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1571969195, now seen corresponding path program 1 times [2020-10-12 15:58:31,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:31,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1609674628] [2020-10-12 15:58:31,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:31,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:31,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:31,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:31,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 15:58:31,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:31,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 15:58:31,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:31,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:31,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 15:58:31,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 15:58:31,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:31,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:31,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:31,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:31,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:31,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:31,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:31,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:58:31,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:31,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:31,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:31,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:31,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:31,929 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 15:58:31,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1609674628] [2020-10-12 15:58:31,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:31,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:31,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162012006] [2020-10-12 15:58:31,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:31,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:31,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:31,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:31,931 INFO L87 Difference]: Start difference. First operand 196 states and 354 transitions. Second operand 3 states. [2020-10-12 15:58:31,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:31,948 INFO L93 Difference]: Finished difference Result 372 states and 680 transitions. [2020-10-12 15:58:31,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:31,949 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-12 15:58:31,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:31,951 INFO L225 Difference]: With dead ends: 372 [2020-10-12 15:58:31,951 INFO L226 Difference]: Without dead ends: 370 [2020-10-12 15:58:31,952 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:31,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2020-10-12 15:58:31,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 264. [2020-10-12 15:58:31,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-10-12 15:58:31,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 474 transitions. [2020-10-12 15:58:31,962 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 474 transitions. Word has length 27 [2020-10-12 15:58:31,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:31,962 INFO L479 AbstractCegarLoop]: Abstraction has 264 states and 474 transitions. [2020-10-12 15:58:31,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:31,963 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 474 transitions. [2020-10-12 15:58:31,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-12 15:58:31,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:31,964 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] [2020-10-12 15:58:31,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 15:58:31,965 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:31,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:31,965 INFO L82 PathProgramCache]: Analyzing trace with hash -422175511, now seen corresponding path program 1 times [2020-10-12 15:58:31,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:31,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752002562] [2020-10-12 15:58:31,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:31,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:31,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:32,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:32,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 15:58:32,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:32,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 15:58:32,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:32,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:32,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 15:58:32,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:58:32,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:32,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:32,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:32,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:32,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:32,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:32,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:32,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:58:32,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:32,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:32,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:32,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:32,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:32,027 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 15:58:32,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [752002562] [2020-10-12 15:58:32,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:32,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:32,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594732621] [2020-10-12 15:58:32,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:32,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:32,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:32,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:32,029 INFO L87 Difference]: Start difference. First operand 264 states and 474 transitions. Second operand 3 states. [2020-10-12 15:58:32,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:32,050 INFO L93 Difference]: Finished difference Result 632 states and 1144 transitions. [2020-10-12 15:58:32,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:32,051 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-12 15:58:32,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:32,053 INFO L225 Difference]: With dead ends: 632 [2020-10-12 15:58:32,053 INFO L226 Difference]: Without dead ends: 378 [2020-10-12 15:58:32,055 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:32,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2020-10-12 15:58:32,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 376. [2020-10-12 15:58:32,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-10-12 15:58:32,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 674 transitions. [2020-10-12 15:58:32,067 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 674 transitions. Word has length 27 [2020-10-12 15:58:32,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:32,068 INFO L479 AbstractCegarLoop]: Abstraction has 376 states and 674 transitions. [2020-10-12 15:58:32,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:32,068 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 674 transitions. [2020-10-12 15:58:32,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-12 15:58:32,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:32,069 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] [2020-10-12 15:58:32,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 15:58:32,070 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:32,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:32,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1486617231, now seen corresponding path program 1 times [2020-10-12 15:58:32,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:32,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1057220122] [2020-10-12 15:58:32,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:32,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:32,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:32,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:32,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:32,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 15:58:32,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:58:32,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-12 15:58:32,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:32,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:32,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 15:58:32,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 15:58:32,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:58:32,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:32,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:32,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:32,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:32,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:32,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:32,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:58:32,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:32,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:32,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:32,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:32,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:32,191 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 15:58:32,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1057220122] [2020-10-12 15:58:32,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:32,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:32,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364775056] [2020-10-12 15:58:32,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:32,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:32,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:32,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:32,194 INFO L87 Difference]: Start difference. First operand 376 states and 674 transitions. Second operand 3 states. [2020-10-12 15:58:32,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:32,215 INFO L93 Difference]: Finished difference Result 712 states and 1292 transitions. [2020-10-12 15:58:32,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:32,216 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-10-12 15:58:32,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:32,220 INFO L225 Difference]: With dead ends: 712 [2020-10-12 15:58:32,220 INFO L226 Difference]: Without dead ends: 710 [2020-10-12 15:58:32,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:32,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2020-10-12 15:58:32,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 516. [2020-10-12 15:58:32,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 516 states. [2020-10-12 15:58:32,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 914 transitions. [2020-10-12 15:58:32,237 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 914 transitions. Word has length 28 [2020-10-12 15:58:32,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:32,237 INFO L479 AbstractCegarLoop]: Abstraction has 516 states and 914 transitions. [2020-10-12 15:58:32,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:32,237 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 914 transitions. [2020-10-12 15:58:32,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-12 15:58:32,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:32,239 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] [2020-10-12 15:58:32,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 15:58:32,239 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:32,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:32,240 INFO L82 PathProgramCache]: Analyzing trace with hash -507527475, now seen corresponding path program 1 times [2020-10-12 15:58:32,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:32,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244635070] [2020-10-12 15:58:32,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:32,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:32,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:32,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:32,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:32,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 15:58:32,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:58:32,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-12 15:58:32,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:32,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:32,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 15:58:32,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:58:32,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:32,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:32,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:32,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:32,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:32,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:32,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:32,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:58:32,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:32,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:32,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:32,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:32,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:32,320 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 15:58:32,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244635070] [2020-10-12 15:58:32,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:32,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:32,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897214422] [2020-10-12 15:58:32,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:32,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:32,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:32,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:32,322 INFO L87 Difference]: Start difference. First operand 516 states and 914 transitions. Second operand 3 states. [2020-10-12 15:58:32,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:32,346 INFO L93 Difference]: Finished difference Result 1240 states and 2212 transitions. [2020-10-12 15:58:32,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:32,347 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-10-12 15:58:32,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:32,351 INFO L225 Difference]: With dead ends: 1240 [2020-10-12 15:58:32,352 INFO L226 Difference]: Without dead ends: 734 [2020-10-12 15:58:32,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:32,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2020-10-12 15:58:32,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 732. [2020-10-12 15:58:32,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 732 states. [2020-10-12 15:58:32,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 1294 transitions. [2020-10-12 15:58:32,374 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 1294 transitions. Word has length 28 [2020-10-12 15:58:32,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:32,375 INFO L479 AbstractCegarLoop]: Abstraction has 732 states and 1294 transitions. [2020-10-12 15:58:32,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:32,375 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 1294 transitions. [2020-10-12 15:58:32,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-12 15:58:32,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:32,376 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] [2020-10-12 15:58:32,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 15:58:32,377 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:32,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:32,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1159293312, now seen corresponding path program 1 times [2020-10-12 15:58:32,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:32,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [47915105] [2020-10-12 15:58:32,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:32,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:32,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:32,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:32,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:32,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:32,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-12 15:58:32,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:58:32,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-12 15:58:32,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:32,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:32,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-12 15:58:32,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 15:58:32,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:32,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:32,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:32,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:32,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:32,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:32,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:32,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:58:32,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:32,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:32,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:32,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:32,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:32,498 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 15:58:32,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [47915105] [2020-10-12 15:58:32,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:32,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:32,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411545395] [2020-10-12 15:58:32,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:32,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:32,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:32,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:32,501 INFO L87 Difference]: Start difference. First operand 732 states and 1294 transitions. Second operand 3 states. [2020-10-12 15:58:32,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:32,526 INFO L93 Difference]: Finished difference Result 1376 states and 2464 transitions. [2020-10-12 15:58:32,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:32,526 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-10-12 15:58:32,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:32,534 INFO L225 Difference]: With dead ends: 1376 [2020-10-12 15:58:32,534 INFO L226 Difference]: Without dead ends: 1374 [2020-10-12 15:58:32,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:32,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1374 states. [2020-10-12 15:58:32,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1374 to 1020. [2020-10-12 15:58:32,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1020 states. [2020-10-12 15:58:32,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 1774 transitions. [2020-10-12 15:58:32,564 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 1774 transitions. Word has length 29 [2020-10-12 15:58:32,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:32,564 INFO L479 AbstractCegarLoop]: Abstraction has 1020 states and 1774 transitions. [2020-10-12 15:58:32,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:32,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 1774 transitions. [2020-10-12 15:58:32,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-12 15:58:32,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:32,566 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] [2020-10-12 15:58:32,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 15:58:32,567 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:32,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:32,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1141529278, now seen corresponding path program 1 times [2020-10-12 15:58:32,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:32,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1232147266] [2020-10-12 15:58:32,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:32,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:32,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:32,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:32,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:32,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:32,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-12 15:58:32,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:58:32,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-12 15:58:32,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:32,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:32,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-12 15:58:32,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:58:32,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:32,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:32,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:32,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:32,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:32,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:32,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:32,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:58:32,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:32,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:32,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:32,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:32,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:32,684 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 15:58:32,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1232147266] [2020-10-12 15:58:32,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:32,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:32,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679944789] [2020-10-12 15:58:32,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:32,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:32,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:32,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:32,686 INFO L87 Difference]: Start difference. First operand 1020 states and 1774 transitions. Second operand 3 states. [2020-10-12 15:58:32,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:32,719 INFO L93 Difference]: Finished difference Result 2448 states and 4288 transitions. [2020-10-12 15:58:32,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:32,733 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-10-12 15:58:32,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:32,739 INFO L225 Difference]: With dead ends: 2448 [2020-10-12 15:58:32,739 INFO L226 Difference]: Without dead ends: 1438 [2020-10-12 15:58:32,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:32,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2020-10-12 15:58:32,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 1436. [2020-10-12 15:58:32,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1436 states. [2020-10-12 15:58:32,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2494 transitions. [2020-10-12 15:58:32,776 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2494 transitions. Word has length 29 [2020-10-12 15:58:32,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:32,777 INFO L479 AbstractCegarLoop]: Abstraction has 1436 states and 2494 transitions. [2020-10-12 15:58:32,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:32,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2494 transitions. [2020-10-12 15:58:32,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-12 15:58:32,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:32,779 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] [2020-10-12 15:58:32,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 15:58:32,779 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:32,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:32,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1578141180, now seen corresponding path program 1 times [2020-10-12 15:58:32,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:32,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [950517397] [2020-10-12 15:58:32,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:32,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:32,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:32,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:32,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:32,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:32,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:32,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 15:58:32,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:58:32,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-12 15:58:32,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:32,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:32,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 15:58:32,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 15:58:32,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:32,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:32,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:32,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:32,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:32,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:32,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:32,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:58:32,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:32,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:32,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:32,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:32,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:32,961 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 15:58:32,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [950517397] [2020-10-12 15:58:32,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:32,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:32,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440090882] [2020-10-12 15:58:32,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:32,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:32,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:32,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:32,962 INFO L87 Difference]: Start difference. First operand 1436 states and 2494 transitions. Second operand 3 states. [2020-10-12 15:58:33,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:33,007 INFO L93 Difference]: Finished difference Result 2672 states and 4704 transitions. [2020-10-12 15:58:33,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:33,008 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-10-12 15:58:33,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:33,025 INFO L225 Difference]: With dead ends: 2672 [2020-10-12 15:58:33,025 INFO L226 Difference]: Without dead ends: 2670 [2020-10-12 15:58:33,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:33,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2670 states. [2020-10-12 15:58:33,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2670 to 2028. [2020-10-12 15:58:33,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2028 states. [2020-10-12 15:58:33,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2028 states to 2028 states and 3454 transitions. [2020-10-12 15:58:33,100 INFO L78 Accepts]: Start accepts. Automaton has 2028 states and 3454 transitions. Word has length 30 [2020-10-12 15:58:33,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:33,100 INFO L479 AbstractCegarLoop]: Abstraction has 2028 states and 3454 transitions. [2020-10-12 15:58:33,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:33,101 INFO L276 IsEmpty]: Start isEmpty. Operand 2028 states and 3454 transitions. [2020-10-12 15:58:33,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-12 15:58:33,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:33,104 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] [2020-10-12 15:58:33,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 15:58:33,105 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:33,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:33,105 INFO L82 PathProgramCache]: Analyzing trace with hash 722681410, now seen corresponding path program 1 times [2020-10-12 15:58:33,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:33,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [906465855] [2020-10-12 15:58:33,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:33,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:33,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:33,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:33,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:33,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:33,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:33,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 15:58:33,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:58:33,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-12 15:58:33,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:33,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:33,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 15:58:33,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:58:33,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:33,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:33,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:33,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:33,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:33,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:33,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:33,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:58:33,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:33,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:33,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:33,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:33,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:58:33,316 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 15:58:33,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [906465855] [2020-10-12 15:58:33,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:33,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:33,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749358955] [2020-10-12 15:58:33,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:33,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:33,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:33,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:33,319 INFO L87 Difference]: Start difference. First operand 2028 states and 3454 transitions. Second operand 3 states. [2020-10-12 15:58:33,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:33,378 INFO L93 Difference]: Finished difference Result 4848 states and 8320 transitions. [2020-10-12 15:58:33,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:33,378 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-10-12 15:58:33,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:33,392 INFO L225 Difference]: With dead ends: 4848 [2020-10-12 15:58:33,392 INFO L226 Difference]: Without dead ends: 2830 [2020-10-12 15:58:33,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:33,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2830 states. [2020-10-12 15:58:33,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2830 to 2828. [2020-10-12 15:58:33,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2828 states. [2020-10-12 15:58:33,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2828 states to 2828 states and 4814 transitions. [2020-10-12 15:58:33,488 INFO L78 Accepts]: Start accepts. Automaton has 2828 states and 4814 transitions. Word has length 30 [2020-10-12 15:58:33,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:33,489 INFO L479 AbstractCegarLoop]: Abstraction has 2828 states and 4814 transitions. [2020-10-12 15:58:33,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:33,489 INFO L276 IsEmpty]: Start isEmpty. Operand 2828 states and 4814 transitions. [2020-10-12 15:58:33,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-12 15:58:33,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:33,493 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] [2020-10-12 15:58:33,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 15:58:33,494 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:33,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:33,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1677522859, now seen corresponding path program 1 times [2020-10-12 15:58:33,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:33,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [99297400] [2020-10-12 15:58:33,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:33,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:33,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:33,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:33,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:33,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:33,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:33,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:33,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-12 15:58:33,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 15:58:33,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-10-12 15:58:33,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:33,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:33,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 15:58:33,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:58:33,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:33,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:33,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:33,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:33,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:33,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:33,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:33,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:58:33,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:33,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:33,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:33,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:33,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:33,853 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 15:58:33,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [99297400] [2020-10-12 15:58:33,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:33,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:33,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909284633] [2020-10-12 15:58:33,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:33,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:33,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:33,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:33,855 INFO L87 Difference]: Start difference. First operand 2828 states and 4814 transitions. Second operand 3 states. [2020-10-12 15:58:33,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:33,902 INFO L93 Difference]: Finished difference Result 4228 states and 7176 transitions. [2020-10-12 15:58:33,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:33,902 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-10-12 15:58:33,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:33,916 INFO L225 Difference]: With dead ends: 4228 [2020-10-12 15:58:33,916 INFO L226 Difference]: Without dead ends: 2834 [2020-10-12 15:58:33,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:33,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2834 states. [2020-10-12 15:58:33,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2834 to 2832. [2020-10-12 15:58:33,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2832 states. [2020-10-12 15:58:33,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2832 states to 2832 states and 4758 transitions. [2020-10-12 15:58:33,991 INFO L78 Accepts]: Start accepts. Automaton has 2832 states and 4758 transitions. Word has length 31 [2020-10-12 15:58:33,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:33,991 INFO L479 AbstractCegarLoop]: Abstraction has 2832 states and 4758 transitions. [2020-10-12 15:58:33,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:33,991 INFO L276 IsEmpty]: Start isEmpty. Operand 2832 states and 4758 transitions. [2020-10-12 15:58:33,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-12 15:58:33,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:33,995 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] [2020-10-12 15:58:33,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 15:58:33,995 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:33,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:33,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1458668141, now seen corresponding path program 1 times [2020-10-12 15:58:33,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:33,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548129470] [2020-10-12 15:58:33,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:34,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:34,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:34,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:34,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:34,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:34,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:34,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-12 15:58:34,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:58:34,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-12 15:58:34,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:34,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:34,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 15:58:34,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:58:34,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:34,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:34,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:34,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:34,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:34,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:34,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:34,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:58:34,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:34,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:34,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:34,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:34,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:34,181 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 15:58:34,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1548129470] [2020-10-12 15:58:34,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:34,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:34,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374198245] [2020-10-12 15:58:34,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:34,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:34,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:34,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:34,183 INFO L87 Difference]: Start difference. First operand 2832 states and 4758 transitions. Second operand 3 states. [2020-10-12 15:58:34,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:34,228 INFO L93 Difference]: Finished difference Result 4236 states and 7096 transitions. [2020-10-12 15:58:34,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:34,229 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-10-12 15:58:34,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:34,243 INFO L225 Difference]: With dead ends: 4236 [2020-10-12 15:58:34,243 INFO L226 Difference]: Without dead ends: 2842 [2020-10-12 15:58:34,246 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:34,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2020-10-12 15:58:34,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 2840. [2020-10-12 15:58:34,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2840 states. [2020-10-12 15:58:34,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2840 states to 2840 states and 4710 transitions. [2020-10-12 15:58:34,357 INFO L78 Accepts]: Start accepts. Automaton has 2840 states and 4710 transitions. Word has length 31 [2020-10-12 15:58:34,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:34,357 INFO L479 AbstractCegarLoop]: Abstraction has 2840 states and 4710 transitions. [2020-10-12 15:58:34,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:34,357 INFO L276 IsEmpty]: Start isEmpty. Operand 2840 states and 4710 transitions. [2020-10-12 15:58:34,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-12 15:58:34,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:34,361 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] [2020-10-12 15:58:34,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 15:58:34,361 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:34,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:34,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1035966315, now seen corresponding path program 1 times [2020-10-12 15:58:34,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:34,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228433529] [2020-10-12 15:58:34,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:34,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:34,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:34,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:34,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:34,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:34,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-12 15:58:34,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:58:34,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-12 15:58:34,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:34,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:34,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-12 15:58:34,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:58:34,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:34,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:34,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:34,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:34,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:34,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:34,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:34,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:58:34,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:34,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:34,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:34,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:34,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:34,463 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 15:58:34,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228433529] [2020-10-12 15:58:34,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:34,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:34,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527463] [2020-10-12 15:58:34,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:34,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:34,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:34,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:34,465 INFO L87 Difference]: Start difference. First operand 2840 states and 4710 transitions. Second operand 3 states. [2020-10-12 15:58:34,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:34,505 INFO L93 Difference]: Finished difference Result 4252 states and 7032 transitions. [2020-10-12 15:58:34,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:34,506 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-10-12 15:58:34,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:34,519 INFO L225 Difference]: With dead ends: 4252 [2020-10-12 15:58:34,519 INFO L226 Difference]: Without dead ends: 2858 [2020-10-12 15:58:34,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:34,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2858 states. [2020-10-12 15:58:34,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2858 to 2856. [2020-10-12 15:58:34,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2856 states. [2020-10-12 15:58:34,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2856 states to 2856 states and 4678 transitions. [2020-10-12 15:58:34,590 INFO L78 Accepts]: Start accepts. Automaton has 2856 states and 4678 transitions. Word has length 31 [2020-10-12 15:58:34,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:34,591 INFO L479 AbstractCegarLoop]: Abstraction has 2856 states and 4678 transitions. [2020-10-12 15:58:34,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:34,591 INFO L276 IsEmpty]: Start isEmpty. Operand 2856 states and 4678 transitions. [2020-10-12 15:58:34,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-12 15:58:34,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:34,594 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] [2020-10-12 15:58:34,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 15:58:34,595 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:34,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:34,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1853614765, now seen corresponding path program 1 times [2020-10-12 15:58:34,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:34,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1582462283] [2020-10-12 15:58:34,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:34,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:34,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:34,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:34,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:34,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-12 15:58:34,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:58:34,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-12 15:58:34,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:34,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:34,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 15:58:34,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:58:34,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:34,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:34,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:34,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:34,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:34,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:34,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:34,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:58:34,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:34,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:34,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:34,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:34,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:34,661 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 15:58:34,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1582462283] [2020-10-12 15:58:34,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:34,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:34,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988400415] [2020-10-12 15:58:34,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:34,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:34,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:34,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:34,663 INFO L87 Difference]: Start difference. First operand 2856 states and 4678 transitions. Second operand 3 states. [2020-10-12 15:58:34,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:34,717 INFO L93 Difference]: Finished difference Result 4284 states and 7000 transitions. [2020-10-12 15:58:34,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:34,718 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-10-12 15:58:34,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:34,733 INFO L225 Difference]: With dead ends: 4284 [2020-10-12 15:58:34,733 INFO L226 Difference]: Without dead ends: 2890 [2020-10-12 15:58:34,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:34,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2890 states. [2020-10-12 15:58:34,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2890 to 2888. [2020-10-12 15:58:34,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2888 states. [2020-10-12 15:58:34,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2888 states to 2888 states and 4678 transitions. [2020-10-12 15:58:34,808 INFO L78 Accepts]: Start accepts. Automaton has 2888 states and 4678 transitions. Word has length 31 [2020-10-12 15:58:34,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:34,809 INFO L479 AbstractCegarLoop]: Abstraction has 2888 states and 4678 transitions. [2020-10-12 15:58:34,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:34,809 INFO L276 IsEmpty]: Start isEmpty. Operand 2888 states and 4678 transitions. [2020-10-12 15:58:34,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-12 15:58:34,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:34,812 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] [2020-10-12 15:58:34,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 15:58:34,813 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:34,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:34,813 INFO L82 PathProgramCache]: Analyzing trace with hash 752408789, now seen corresponding path program 1 times [2020-10-12 15:58:34,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:34,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1080309295] [2020-10-12 15:58:34,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:34,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:34,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:34,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:34,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-12 15:58:34,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:34,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 15:58:34,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:34,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:34,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 15:58:34,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 15:58:34,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:34,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:34,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:34,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:34,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:34,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:34,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:34,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:58:34,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:34,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:34,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:34,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:34,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:34,858 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 15:58:34,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1080309295] [2020-10-12 15:58:34,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:34,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:34,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273491298] [2020-10-12 15:58:34,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:34,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:34,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:34,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:34,860 INFO L87 Difference]: Start difference. First operand 2888 states and 4678 transitions. Second operand 3 states. [2020-10-12 15:58:34,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:34,916 INFO L93 Difference]: Finished difference Result 5260 states and 8712 transitions. [2020-10-12 15:58:34,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:34,916 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-10-12 15:58:34,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:34,930 INFO L225 Difference]: With dead ends: 5260 [2020-10-12 15:58:34,930 INFO L226 Difference]: Without dead ends: 5258 [2020-10-12 15:58:34,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:34,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5258 states. [2020-10-12 15:58:35,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5258 to 4104. [2020-10-12 15:58:35,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4104 states. [2020-10-12 15:58:35,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4104 states to 4104 states and 6470 transitions. [2020-10-12 15:58:35,026 INFO L78 Accepts]: Start accepts. Automaton has 4104 states and 6470 transitions. Word has length 31 [2020-10-12 15:58:35,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:35,027 INFO L479 AbstractCegarLoop]: Abstraction has 4104 states and 6470 transitions. [2020-10-12 15:58:35,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:35,027 INFO L276 IsEmpty]: Start isEmpty. Operand 4104 states and 6470 transitions. [2020-10-12 15:58:35,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-12 15:58:35,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:35,033 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] [2020-10-12 15:58:35,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 15:58:35,033 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:35,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:35,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1241735917, now seen corresponding path program 1 times [2020-10-12 15:58:35,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:35,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [913355474] [2020-10-12 15:58:35,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:35,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:35,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:35,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:35,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-12 15:58:35,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:35,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 15:58:35,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:35,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:35,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 15:58:35,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:58:35,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:35,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:35,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:35,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:35,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:35,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:35,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:35,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:58:35,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:35,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:35,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:35,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:35,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:35,089 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 15:58:35,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [913355474] [2020-10-12 15:58:35,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:35,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:35,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238831470] [2020-10-12 15:58:35,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:35,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:35,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:35,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:35,092 INFO L87 Difference]: Start difference. First operand 4104 states and 6470 transitions. Second operand 3 states. [2020-10-12 15:58:35,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:35,188 INFO L93 Difference]: Finished difference Result 9676 states and 15368 transitions. [2020-10-12 15:58:35,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:35,188 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-10-12 15:58:35,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:35,202 INFO L225 Difference]: With dead ends: 9676 [2020-10-12 15:58:35,202 INFO L226 Difference]: Without dead ends: 5642 [2020-10-12 15:58:35,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:35,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5642 states. [2020-10-12 15:58:35,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5642 to 5640. [2020-10-12 15:58:35,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5640 states. [2020-10-12 15:58:35,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5640 states to 5640 states and 8902 transitions. [2020-10-12 15:58:35,370 INFO L78 Accepts]: Start accepts. Automaton has 5640 states and 8902 transitions. Word has length 31 [2020-10-12 15:58:35,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:35,371 INFO L479 AbstractCegarLoop]: Abstraction has 5640 states and 8902 transitions. [2020-10-12 15:58:35,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:35,371 INFO L276 IsEmpty]: Start isEmpty. Operand 5640 states and 8902 transitions. [2020-10-12 15:58:35,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-12 15:58:35,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:35,377 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] [2020-10-12 15:58:35,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 15:58:35,380 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:35,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:35,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1850049785, now seen corresponding path program 1 times [2020-10-12 15:58:35,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:35,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [654698511] [2020-10-12 15:58:35,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:35,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:35,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:35,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:35,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:35,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 15:58:35,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:58:35,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-12 15:58:35,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:35,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:35,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-12 15:58:35,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:58:35,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:35,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:35,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:35,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:35,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:35,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:35,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:35,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:58:35,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:35,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:35,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:35,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:35,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:35,457 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 15:58:35,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [654698511] [2020-10-12 15:58:35,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:35,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:35,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69784108] [2020-10-12 15:58:35,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:35,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:35,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:35,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:35,459 INFO L87 Difference]: Start difference. First operand 5640 states and 8902 transitions. Second operand 3 states. [2020-10-12 15:58:35,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:35,593 INFO L93 Difference]: Finished difference Result 16652 states and 26184 transitions. [2020-10-12 15:58:35,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:35,593 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-12 15:58:35,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:35,616 INFO L225 Difference]: With dead ends: 16652 [2020-10-12 15:58:35,616 INFO L226 Difference]: Without dead ends: 11082 [2020-10-12 15:58:35,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:35,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11082 states. [2020-10-12 15:58:35,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11082 to 11080. [2020-10-12 15:58:35,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11080 states. [2020-10-12 15:58:35,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11080 states to 11080 states and 17158 transitions. [2020-10-12 15:58:35,872 INFO L78 Accepts]: Start accepts. Automaton has 11080 states and 17158 transitions. Word has length 32 [2020-10-12 15:58:35,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:35,873 INFO L479 AbstractCegarLoop]: Abstraction has 11080 states and 17158 transitions. [2020-10-12 15:58:35,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:35,873 INFO L276 IsEmpty]: Start isEmpty. Operand 11080 states and 17158 transitions. [2020-10-12 15:58:35,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-12 15:58:35,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:35,889 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] [2020-10-12 15:58:35,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 15:58:35,889 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:35,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:35,890 INFO L82 PathProgramCache]: Analyzing trace with hash -450772805, now seen corresponding path program 1 times [2020-10-12 15:58:35,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:35,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [309021724] [2020-10-12 15:58:35,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:35,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:35,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:35,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:35,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:35,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 15:58:35,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:58:35,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-12 15:58:35,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:35,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:35,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-12 15:58:35,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 15:58:35,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:35,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:35,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:35,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:35,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:35,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:35,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:35,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:58:35,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:35,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:35,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:35,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:35,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:58:35,966 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 15:58:35,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [309021724] [2020-10-12 15:58:35,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:35,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:35,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722045813] [2020-10-12 15:58:35,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:35,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:35,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:35,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:35,969 INFO L87 Difference]: Start difference. First operand 11080 states and 17158 transitions. Second operand 3 states. [2020-10-12 15:58:36,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:36,141 INFO L93 Difference]: Finished difference Result 13132 states and 21000 transitions. [2020-10-12 15:58:36,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:36,142 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-12 15:58:36,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:36,165 INFO L225 Difference]: With dead ends: 13132 [2020-10-12 15:58:36,165 INFO L226 Difference]: Without dead ends: 13130 [2020-10-12 15:58:36,170 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:36,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13130 states. [2020-10-12 15:58:36,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13130 to 11080. [2020-10-12 15:58:36,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11080 states. [2020-10-12 15:58:36,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11080 states to 11080 states and 17030 transitions. [2020-10-12 15:58:36,410 INFO L78 Accepts]: Start accepts. Automaton has 11080 states and 17030 transitions. Word has length 32 [2020-10-12 15:58:36,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:36,410 INFO L479 AbstractCegarLoop]: Abstraction has 11080 states and 17030 transitions. [2020-10-12 15:58:36,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:36,412 INFO L276 IsEmpty]: Start isEmpty. Operand 11080 states and 17030 transitions. [2020-10-12 15:58:36,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-12 15:58:36,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:36,425 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 15:58:36,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 15:58:36,425 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:36,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:36,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1517182634, now seen corresponding path program 1 times [2020-10-12 15:58:36,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:36,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1392279699] [2020-10-12 15:58:36,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:36,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:36,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:36,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:36,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:36,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-12 15:58:36,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:58:36,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-12 15:58:36,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:36,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:36,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 15:58:36,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:58:36,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:36,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:36,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:36,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:36,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:36,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:36,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:36,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:58:36,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:36,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:36,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:36,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:36,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:36,491 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 15:58:36,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1392279699] [2020-10-12 15:58:36,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:36,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:36,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015172993] [2020-10-12 15:58:36,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:36,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:36,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:36,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:36,496 INFO L87 Difference]: Start difference. First operand 11080 states and 17030 transitions. Second operand 3 states. [2020-10-12 15:58:36,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:36,600 INFO L93 Difference]: Finished difference Result 16588 states and 25416 transitions. [2020-10-12 15:58:36,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:36,601 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-10-12 15:58:36,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:36,622 INFO L225 Difference]: With dead ends: 16588 [2020-10-12 15:58:36,622 INFO L226 Difference]: Without dead ends: 11146 [2020-10-12 15:58:36,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:36,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11146 states. [2020-10-12 15:58:36,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11146 to 11144. [2020-10-12 15:58:36,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11144 states. [2020-10-12 15:58:36,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11144 states to 11144 states and 16902 transitions. [2020-10-12 15:58:36,851 INFO L78 Accepts]: Start accepts. Automaton has 11144 states and 16902 transitions. Word has length 33 [2020-10-12 15:58:36,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:36,851 INFO L479 AbstractCegarLoop]: Abstraction has 11144 states and 16902 transitions. [2020-10-12 15:58:36,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:36,852 INFO L276 IsEmpty]: Start isEmpty. Operand 11144 states and 16902 transitions. [2020-10-12 15:58:36,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-12 15:58:36,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:36,865 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 15:58:36,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 15:58:36,865 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:36,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:36,866 INFO L82 PathProgramCache]: Analyzing trace with hash 699534184, now seen corresponding path program 1 times [2020-10-12 15:58:36,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:36,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1623135574] [2020-10-12 15:58:36,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:36,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:36,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:36,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:36,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-12 15:58:36,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:36,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 15:58:36,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:36,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:36,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 15:58:36,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 15:58:36,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:36,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:36,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:36,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:36,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:36,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:36,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:36,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:58:36,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:36,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:36,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:36,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:36,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:36,921 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 15:58:36,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1623135574] [2020-10-12 15:58:36,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:36,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:36,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108053461] [2020-10-12 15:58:36,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:36,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:36,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:36,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:36,923 INFO L87 Difference]: Start difference. First operand 11144 states and 16902 transitions. Second operand 3 states. [2020-10-12 15:58:37,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:37,119 INFO L93 Difference]: Finished difference Result 19852 states and 30856 transitions. [2020-10-12 15:58:37,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:37,120 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-10-12 15:58:37,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:37,157 INFO L225 Difference]: With dead ends: 19852 [2020-10-12 15:58:37,157 INFO L226 Difference]: Without dead ends: 19850 [2020-10-12 15:58:37,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:37,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19850 states. [2020-10-12 15:58:37,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19850 to 16264. [2020-10-12 15:58:37,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16264 states. [2020-10-12 15:58:37,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16264 states to 16264 states and 23942 transitions. [2020-10-12 15:58:37,442 INFO L78 Accepts]: Start accepts. Automaton has 16264 states and 23942 transitions. Word has length 33 [2020-10-12 15:58:37,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:37,442 INFO L479 AbstractCegarLoop]: Abstraction has 16264 states and 23942 transitions. [2020-10-12 15:58:37,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:37,443 INFO L276 IsEmpty]: Start isEmpty. Operand 16264 states and 23942 transitions. [2020-10-12 15:58:37,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-12 15:58:37,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:37,469 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 15:58:37,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 15:58:37,469 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:37,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:37,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1294610522, now seen corresponding path program 1 times [2020-10-12 15:58:37,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:37,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1270451829] [2020-10-12 15:58:37,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:37,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:37,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:37,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:37,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-12 15:58:37,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:37,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 15:58:37,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:37,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:37,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 15:58:37,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:58:37,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:37,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:37,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:37,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:37,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:37,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:37,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:37,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:58:37,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:37,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:37,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:37,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:37,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:58:37,526 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 15:58:37,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1270451829] [2020-10-12 15:58:37,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:37,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:37,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346580343] [2020-10-12 15:58:37,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:37,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:37,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:37,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:37,528 INFO L87 Difference]: Start difference. First operand 16264 states and 23942 transitions. Second operand 3 states. [2020-10-12 15:58:37,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:37,740 INFO L93 Difference]: Finished difference Result 38028 states and 56456 transitions. [2020-10-12 15:58:37,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:37,741 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-10-12 15:58:37,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:37,783 INFO L225 Difference]: With dead ends: 38028 [2020-10-12 15:58:37,783 INFO L226 Difference]: Without dead ends: 21898 [2020-10-12 15:58:37,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:37,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21898 states. [2020-10-12 15:58:38,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21898 to 21896. [2020-10-12 15:58:38,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21896 states. [2020-10-12 15:58:38,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21896 states to 21896 states and 32262 transitions. [2020-10-12 15:58:38,291 INFO L78 Accepts]: Start accepts. Automaton has 21896 states and 32262 transitions. Word has length 33 [2020-10-12 15:58:38,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:38,291 INFO L479 AbstractCegarLoop]: Abstraction has 21896 states and 32262 transitions. [2020-10-12 15:58:38,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:38,291 INFO L276 IsEmpty]: Start isEmpty. Operand 21896 states and 32262 transitions. [2020-10-12 15:58:38,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-12 15:58:38,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:38,314 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:58:38,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 15:58:38,315 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:38,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:38,315 INFO L82 PathProgramCache]: Analyzing trace with hash 210937712, now seen corresponding path program 1 times [2020-10-12 15:58:38,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:38,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2126154284] [2020-10-12 15:58:38,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:38,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:38,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:38,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:38,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:38,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 15:58:38,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:58:38,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-12 15:58:38,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:38,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:38,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 15:58:38,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 15:58:38,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:38,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:38,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:38,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:38,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:38,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:38,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:38,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:58:38,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:38,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:38,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:38,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:38,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:38,379 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 15:58:38,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2126154284] [2020-10-12 15:58:38,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:38,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:38,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468499975] [2020-10-12 15:58:38,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:38,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:38,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:38,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:38,380 INFO L87 Difference]: Start difference. First operand 21896 states and 32262 transitions. Second operand 3 states. [2020-10-12 15:58:38,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:38,688 INFO L93 Difference]: Finished difference Result 38540 states and 58120 transitions. [2020-10-12 15:58:38,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:38,689 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-10-12 15:58:38,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:38,816 INFO L225 Difference]: With dead ends: 38540 [2020-10-12 15:58:38,816 INFO L226 Difference]: Without dead ends: 38538 [2020-10-12 15:58:38,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:38,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38538 states. [2020-10-12 15:58:40,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38538 to 32392. [2020-10-12 15:58:40,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32392 states. [2020-10-12 15:58:40,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32392 states to 32392 states and 46342 transitions. [2020-10-12 15:58:40,113 INFO L78 Accepts]: Start accepts. Automaton has 32392 states and 46342 transitions. Word has length 34 [2020-10-12 15:58:40,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:40,114 INFO L479 AbstractCegarLoop]: Abstraction has 32392 states and 46342 transitions. [2020-10-12 15:58:40,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:40,114 INFO L276 IsEmpty]: Start isEmpty. Operand 32392 states and 46342 transitions. [2020-10-12 15:58:40,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-12 15:58:40,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:40,153 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:58:40,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 15:58:40,154 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:40,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:40,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1783206994, now seen corresponding path program 1 times [2020-10-12 15:58:40,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:40,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250774699] [2020-10-12 15:58:40,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:40,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:40,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:40,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:40,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:40,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 15:58:40,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:58:40,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-12 15:58:40,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:40,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:40,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 15:58:40,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:58:40,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:40,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:40,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:40,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:40,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:40,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:40,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:40,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:58:40,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:40,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:40,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:40,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:40,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:40,216 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 15:58:40,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250774699] [2020-10-12 15:58:40,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:40,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:40,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684899957] [2020-10-12 15:58:40,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:40,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:40,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:40,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:40,218 INFO L87 Difference]: Start difference. First operand 32392 states and 46342 transitions. Second operand 3 states. [2020-10-12 15:58:40,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:40,778 INFO L93 Difference]: Finished difference Result 75404 states and 108808 transitions. [2020-10-12 15:58:40,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:40,778 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-10-12 15:58:40,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:40,829 INFO L225 Difference]: With dead ends: 75404 [2020-10-12 15:58:40,829 INFO L226 Difference]: Without dead ends: 43146 [2020-10-12 15:58:40,871 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:40,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43146 states. [2020-10-12 15:58:41,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43146 to 43144. [2020-10-12 15:58:41,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43144 states. [2020-10-12 15:58:41,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43144 states to 43144 states and 61702 transitions. [2020-10-12 15:58:41,566 INFO L78 Accepts]: Start accepts. Automaton has 43144 states and 61702 transitions. Word has length 34 [2020-10-12 15:58:41,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:41,566 INFO L479 AbstractCegarLoop]: Abstraction has 43144 states and 61702 transitions. [2020-10-12 15:58:41,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:41,566 INFO L276 IsEmpty]: Start isEmpty. Operand 43144 states and 61702 transitions. [2020-10-12 15:58:41,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-12 15:58:41,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:41,591 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:58:41,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 15:58:41,592 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:41,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:41,592 INFO L82 PathProgramCache]: Analyzing trace with hash -2050650691, now seen corresponding path program 1 times [2020-10-12 15:58:41,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:41,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718224802] [2020-10-12 15:58:41,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:41,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:41,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:41,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:41,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:41,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:41,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-12 15:58:41,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:58:41,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-12 15:58:41,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:41,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:41,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-12 15:58:41,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 15:58:41,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:41,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:41,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:41,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:41,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:41,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:41,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:41,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:58:41,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:41,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:41,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:41,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:41,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:41,685 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 15:58:41,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1718224802] [2020-10-12 15:58:41,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:41,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:41,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070606405] [2020-10-12 15:58:41,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:41,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:41,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:41,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:41,687 INFO L87 Difference]: Start difference. First operand 43144 states and 61702 transitions. Second operand 3 states. [2020-10-12 15:58:43,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:43,067 INFO L93 Difference]: Finished difference Result 74892 states and 109320 transitions. [2020-10-12 15:58:43,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:43,067 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2020-10-12 15:58:43,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:43,151 INFO L225 Difference]: With dead ends: 74892 [2020-10-12 15:58:43,152 INFO L226 Difference]: Without dead ends: 74890 [2020-10-12 15:58:43,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:43,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74890 states. [2020-10-12 15:58:44,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74890 to 64648. [2020-10-12 15:58:44,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64648 states. [2020-10-12 15:58:44,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64648 states to 64648 states and 89862 transitions. [2020-10-12 15:58:44,155 INFO L78 Accepts]: Start accepts. Automaton has 64648 states and 89862 transitions. Word has length 35 [2020-10-12 15:58:44,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:44,155 INFO L479 AbstractCegarLoop]: Abstraction has 64648 states and 89862 transitions. [2020-10-12 15:58:44,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:44,155 INFO L276 IsEmpty]: Start isEmpty. Operand 64648 states and 89862 transitions. [2020-10-12 15:58:44,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-12 15:58:44,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:44,195 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:58:44,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-12 15:58:44,195 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:44,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:44,196 INFO L82 PathProgramCache]: Analyzing trace with hash 250171899, now seen corresponding path program 1 times [2020-10-12 15:58:44,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:44,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833000413] [2020-10-12 15:58:44,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:44,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:44,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:44,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:44,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:44,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:44,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-12 15:58:44,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:58:44,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-12 15:58:44,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:44,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:44,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-12 15:58:44,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:58:44,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:44,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:44,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:44,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:44,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:44,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:44,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:44,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:58:44,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:44,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:44,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:44,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:44,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:44,282 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 15:58:44,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833000413] [2020-10-12 15:58:44,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:44,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:44,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663761233] [2020-10-12 15:58:44,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:44,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:44,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:44,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:44,283 INFO L87 Difference]: Start difference. First operand 64648 states and 89862 transitions. Second operand 3 states. [2020-10-12 15:58:44,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:44,931 INFO L93 Difference]: Finished difference Result 149644 states and 209672 transitions. [2020-10-12 15:58:44,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:44,932 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2020-10-12 15:58:44,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:45,032 INFO L225 Difference]: With dead ends: 149644 [2020-10-12 15:58:45,032 INFO L226 Difference]: Without dead ends: 85130 [2020-10-12 15:58:45,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:45,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85130 states. [2020-10-12 15:58:47,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85130 to 85128. [2020-10-12 15:58:47,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85128 states. [2020-10-12 15:58:47,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85128 states to 85128 states and 118022 transitions. [2020-10-12 15:58:47,563 INFO L78 Accepts]: Start accepts. Automaton has 85128 states and 118022 transitions. Word has length 35 [2020-10-12 15:58:47,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:47,563 INFO L479 AbstractCegarLoop]: Abstraction has 85128 states and 118022 transitions. [2020-10-12 15:58:47,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:47,563 INFO L276 IsEmpty]: Start isEmpty. Operand 85128 states and 118022 transitions. [2020-10-12 15:58:47,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-12 15:58:47,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:47,612 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:58:47,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-12 15:58:47,612 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:47,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:47,612 INFO L82 PathProgramCache]: Analyzing trace with hash 854553189, now seen corresponding path program 1 times [2020-10-12 15:58:47,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:47,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [493495288] [2020-10-12 15:58:47,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:47,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:47,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:47,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:47,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:47,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:48,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:48,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 15:58:48,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:58:48,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 414 [2020-10-12 15:58:48,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:48,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:48,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-12 15:58:48,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:58:48,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:48,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:48,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:48,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:48,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:48,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:48,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:48,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:58:48,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:48,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:48,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:48,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:48,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:48,051 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 15:58:48,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [493495288] [2020-10-12 15:58:48,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:48,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:48,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999358321] [2020-10-12 15:58:48,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:48,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:48,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:48,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:48,054 INFO L87 Difference]: Start difference. First operand 85128 states and 118022 transitions. Second operand 3 states. [2020-10-12 15:58:48,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:48,631 INFO L93 Difference]: Finished difference Result 129036 states and 179208 transitions. [2020-10-12 15:58:48,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:48,631 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-10-12 15:58:48,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:48,724 INFO L225 Difference]: With dead ends: 129036 [2020-10-12 15:58:48,724 INFO L226 Difference]: Without dead ends: 87050 [2020-10-12 15:58:48,776 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:48,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87050 states. [2020-10-12 15:58:51,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87050 to 87048. [2020-10-12 15:58:51,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87048 states. [2020-10-12 15:58:51,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87048 states to 87048 states and 119814 transitions. [2020-10-12 15:58:51,528 INFO L78 Accepts]: Start accepts. Automaton has 87048 states and 119814 transitions. Word has length 36 [2020-10-12 15:58:51,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:51,528 INFO L479 AbstractCegarLoop]: Abstraction has 87048 states and 119814 transitions. [2020-10-12 15:58:51,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:51,529 INFO L276 IsEmpty]: Start isEmpty. Operand 87048 states and 119814 transitions. [2020-10-12 15:58:51,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-12 15:58:51,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:51,570 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:58:51,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-12 15:58:51,570 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:51,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:51,570 INFO L82 PathProgramCache]: Analyzing trace with hash -834390553, now seen corresponding path program 1 times [2020-10-12 15:58:51,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:51,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1183921553] [2020-10-12 15:58:51,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:51,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:51,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:51,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:51,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:51,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:51,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 15:58:51,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:58:51,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-12 15:58:51,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:51,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:51,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 15:58:51,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:58:51,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:51,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:51,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:51,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:51,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:51,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:51,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:51,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:58:51,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:51,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:51,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:51,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:51,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:51,663 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 15:58:51,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1183921553] [2020-10-12 15:58:51,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:51,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:51,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041183533] [2020-10-12 15:58:51,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:51,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:51,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:51,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:51,664 INFO L87 Difference]: Start difference. First operand 87048 states and 119814 transitions. Second operand 3 states. [2020-10-12 15:58:52,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:52,454 INFO L93 Difference]: Finished difference Result 129036 states and 176136 transitions. [2020-10-12 15:58:52,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:52,454 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-10-12 15:58:52,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:52,562 INFO L225 Difference]: With dead ends: 129036 [2020-10-12 15:58:52,563 INFO L226 Difference]: Without dead ends: 87050 [2020-10-12 15:58:52,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:52,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87050 states. [2020-10-12 15:58:53,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87050 to 87048. [2020-10-12 15:58:53,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87048 states. [2020-10-12 15:58:53,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87048 states to 87048 states and 117766 transitions. [2020-10-12 15:58:53,948 INFO L78 Accepts]: Start accepts. Automaton has 87048 states and 117766 transitions. Word has length 36 [2020-10-12 15:58:53,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:53,948 INFO L479 AbstractCegarLoop]: Abstraction has 87048 states and 117766 transitions. [2020-10-12 15:58:53,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:53,948 INFO L276 IsEmpty]: Start isEmpty. Operand 87048 states and 117766 transitions. [2020-10-12 15:58:53,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-12 15:58:53,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:53,985 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:58:53,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-12 15:58:53,985 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:53,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:53,986 INFO L82 PathProgramCache]: Analyzing trace with hash -411688727, now seen corresponding path program 1 times [2020-10-12 15:58:53,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:53,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [772466234] [2020-10-12 15:58:53,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:53,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:53,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:54,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:54,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:54,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 15:58:54,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:58:54,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-12 15:58:54,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:54,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:54,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-12 15:58:54,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 15:58:54,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:54,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:54,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:54,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:54,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:54,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:54,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:54,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:58:54,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:54,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:54,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:54,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:54,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:54,056 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 15:58:54,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [772466234] [2020-10-12 15:58:54,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:54,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:54,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608195561] [2020-10-12 15:58:54,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:54,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:54,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:54,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:54,058 INFO L87 Difference]: Start difference. First operand 87048 states and 117766 transitions. Second operand 3 states. [2020-10-12 15:58:56,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:56,323 INFO L93 Difference]: Finished difference Result 147468 states and 202760 transitions. [2020-10-12 15:58:56,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:56,323 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-10-12 15:58:56,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:56,446 INFO L225 Difference]: With dead ends: 147468 [2020-10-12 15:58:56,446 INFO L226 Difference]: Without dead ends: 147466 [2020-10-12 15:58:56,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:56,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147466 states. [2020-10-12 15:58:57,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147466 to 131080. [2020-10-12 15:58:57,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131080 states. [2020-10-12 15:58:57,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131080 states to 131080 states and 172038 transitions. [2020-10-12 15:58:57,835 INFO L78 Accepts]: Start accepts. Automaton has 131080 states and 172038 transitions. Word has length 36 [2020-10-12 15:58:57,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:57,836 INFO L479 AbstractCegarLoop]: Abstraction has 131080 states and 172038 transitions. [2020-10-12 15:58:57,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:57,836 INFO L276 IsEmpty]: Start isEmpty. Operand 131080 states and 172038 transitions. [2020-10-12 15:58:57,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-12 15:58:57,897 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:57,897 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:58:57,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-12 15:58:57,897 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:57,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:57,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1889133863, now seen corresponding path program 1 times [2020-10-12 15:58:57,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:57,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1013068694] [2020-10-12 15:58:57,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:57,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:57,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:57,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:57,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:57,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 15:58:57,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:58:57,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 15:58:57,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:57,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:57,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-12 15:58:57,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:58:57,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:57,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:57,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:57,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:57,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:57,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:57,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:57,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:58:57,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:57,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:57,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:57,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:57,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:57,959 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 15:58:57,959 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1013068694] [2020-10-12 15:58:57,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:57,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:57,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777642736] [2020-10-12 15:58:57,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:57,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:57,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:57,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:57,960 INFO L87 Difference]: Start difference. First operand 131080 states and 172038 transitions. Second operand 3 states. [2020-10-12 15:58:59,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:59,745 INFO L93 Difference]: Finished difference Result 299020 states and 393224 transitions. [2020-10-12 15:58:59,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:59,746 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-10-12 15:58:59,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:59,883 INFO L225 Difference]: With dead ends: 299020 [2020-10-12 15:58:59,883 INFO L226 Difference]: Without dead ends: 169994 [2020-10-12 15:58:59,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:59:00,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169994 states. [2020-10-12 15:59:04,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169994 to 169992. [2020-10-12 15:59:04,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169992 states. [2020-10-12 15:59:05,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169992 states to 169992 states and 221190 transitions. [2020-10-12 15:59:05,041 INFO L78 Accepts]: Start accepts. Automaton has 169992 states and 221190 transitions. Word has length 36 [2020-10-12 15:59:05,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:59:05,041 INFO L479 AbstractCegarLoop]: Abstraction has 169992 states and 221190 transitions. [2020-10-12 15:59:05,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:59:05,042 INFO L276 IsEmpty]: Start isEmpty. Operand 169992 states and 221190 transitions. [2020-10-12 15:59:05,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-12 15:59:05,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:59:05,112 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:59:05,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-12 15:59:05,112 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:59:05,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:59:05,113 INFO L82 PathProgramCache]: Analyzing trace with hash 122766862, now seen corresponding path program 1 times [2020-10-12 15:59:05,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:59:05,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628091727] [2020-10-12 15:59:05,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:59:05,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:59:05,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:59:05,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:59:05,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:59:05,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:59:05,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-12 15:59:05,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:59:05,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-12 15:59:05,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:59:05,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:59:05,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-12 15:59:05,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:59:05,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:59:05,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:59:05,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:59:05,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:59:05,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:59:05,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:59:05,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:59:05,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:59:05,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:59:05,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:59:05,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:59:05,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:59:05,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:59:05,192 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 15:59:05,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [628091727] [2020-10-12 15:59:05,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:59:05,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:59:05,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564745104] [2020-10-12 15:59:05,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:59:05,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:59:05,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:59:05,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:59:05,194 INFO L87 Difference]: Start difference. First operand 169992 states and 221190 transitions. Second operand 3 states. [2020-10-12 15:59:06,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:59:06,118 INFO L93 Difference]: Finished difference Result 254988 states and 330760 transitions. [2020-10-12 15:59:06,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:59:06,119 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-10-12 15:59:06,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:59:06,277 INFO L225 Difference]: With dead ends: 254988 [2020-10-12 15:59:06,278 INFO L226 Difference]: Without dead ends: 172042 [2020-10-12 15:59:06,347 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:59:06,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172042 states. [2020-10-12 15:59:08,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172042 to 172040. [2020-10-12 15:59:08,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172040 states. [2020-10-12 15:59:12,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172040 states to 172040 states and 221190 transitions. [2020-10-12 15:59:12,806 INFO L78 Accepts]: Start accepts. Automaton has 172040 states and 221190 transitions. Word has length 37 [2020-10-12 15:59:12,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:59:12,806 INFO L479 AbstractCegarLoop]: Abstraction has 172040 states and 221190 transitions. [2020-10-12 15:59:12,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:59:12,806 INFO L276 IsEmpty]: Start isEmpty. Operand 172040 states and 221190 transitions. [2020-10-12 15:59:12,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-12 15:59:12,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:59:12,891 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:59:12,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-12 15:59:12,892 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:59:12,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:59:12,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1566176880, now seen corresponding path program 1 times [2020-10-12 15:59:12,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:59:12,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [78041001] [2020-10-12 15:59:12,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:59:12,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:59:12,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:59:12,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:59:12,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:59:12,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-12 15:59:12,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:59:12,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-12 15:59:12,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:59:12,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:59:12,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-12 15:59:12,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 15:59:12,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:59:12,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:59:12,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:59:12,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:59:12,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:59:12,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:59:12,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:59:12,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:59:12,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:59:12,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:59:12,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:59:12,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:59:12,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:59:12,947 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 15:59:12,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [78041001] [2020-10-12 15:59:12,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:59:12,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:59:12,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005188754] [2020-10-12 15:59:12,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:59:12,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:59:12,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:59:12,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:59:12,949 INFO L87 Difference]: Start difference. First operand 172040 states and 221190 transitions. Second operand 3 states. [2020-10-12 15:59:14,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:59:14,299 INFO L93 Difference]: Finished difference Result 286732 states and 372744 transitions. [2020-10-12 15:59:14,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:59:14,299 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-10-12 15:59:14,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:59:14,609 INFO L225 Difference]: With dead ends: 286732 [2020-10-12 15:59:14,609 INFO L226 Difference]: Without dead ends: 286730 [2020-10-12 15:59:14,680 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:59:14,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286730 states. [2020-10-12 15:59:18,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286730 to 262152. [2020-10-12 15:59:18,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262152 states. [2020-10-12 15:59:18,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262152 states to 262152 states and 327686 transitions. [2020-10-12 15:59:18,514 INFO L78 Accepts]: Start accepts. Automaton has 262152 states and 327686 transitions. Word has length 37 [2020-10-12 15:59:18,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:59:18,514 INFO L479 AbstractCegarLoop]: Abstraction has 262152 states and 327686 transitions. [2020-10-12 15:59:18,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:59:18,515 INFO L276 IsEmpty]: Start isEmpty. Operand 262152 states and 327686 transitions. [2020-10-12 15:59:18,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-12 15:59:18,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:59:18,640 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:59:18,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-12 15:59:18,640 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:59:18,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:59:18,641 INFO L82 PathProgramCache]: Analyzing trace with hash 734645710, now seen corresponding path program 1 times [2020-10-12 15:59:18,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:59:18,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [518352982] [2020-10-12 15:59:18,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:59:18,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:59:18,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:59:18,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:59:18,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:59:18,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-12 15:59:18,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:59:18,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 15:59:18,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:59:18,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:59:18,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-12 15:59:18,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:59:18,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:59:18,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:59:18,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:59:18,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:59:18,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:59:18,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:59:18,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:59:18,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:59:18,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:59:18,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:59:18,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:59:18,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:59:18,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:59:18,693 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 15:59:18,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [518352982] [2020-10-12 15:59:18,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:59:18,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:59:18,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185370319] [2020-10-12 15:59:18,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:59:18,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:59:18,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:59:18,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:59:18,695 INFO L87 Difference]: Start difference. First operand 262152 states and 327686 transitions. Second operand 3 states. [2020-10-12 15:59:25,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:59:25,710 INFO L93 Difference]: Finished difference Result 593932 states and 741384 transitions. [2020-10-12 15:59:25,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:59:25,711 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-10-12 15:59:25,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:59:26,032 INFO L225 Difference]: With dead ends: 593932 [2020-10-12 15:59:26,032 INFO L226 Difference]: Without dead ends: 335882 [2020-10-12 15:59:26,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:59:26,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335882 states. [2020-10-12 15:59:30,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335882 to 335880. [2020-10-12 15:59:30,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335880 states. [2020-10-12 15:59:30,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335880 states to 335880 states and 413702 transitions. [2020-10-12 15:59:30,977 INFO L78 Accepts]: Start accepts. Automaton has 335880 states and 413702 transitions. Word has length 37 [2020-10-12 15:59:30,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:59:30,977 INFO L479 AbstractCegarLoop]: Abstraction has 335880 states and 413702 transitions. [2020-10-12 15:59:30,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:59:30,978 INFO L276 IsEmpty]: Start isEmpty. Operand 335880 states and 413702 transitions. [2020-10-12 15:59:31,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-12 15:59:31,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:59:31,126 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:59:31,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-12 15:59:31,126 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:59:31,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:59:31,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1306627172, now seen corresponding path program 1 times [2020-10-12 15:59:31,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:59:31,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2054851269] [2020-10-12 15:59:31,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:59:31,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:59:31,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:59:31,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:59:31,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:59:31,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:59:31,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 15:59:31,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:59:31,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-12 15:59:31,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:59:31,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:59:31,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-12 15:59:31,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:59:31,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:59:31,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:59:31,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:59:31,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:59:31,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:59:31,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:59:31,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:59:31,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:59:31,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:59:31,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:59:31,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:59:31,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:59:31,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:59:31,212 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 15:59:31,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2054851269] [2020-10-12 15:59:31,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:59:31,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:59:31,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256771865] [2020-10-12 15:59:31,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:59:31,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:59:31,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:59:31,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:59:31,214 INFO L87 Difference]: Start difference. First operand 335880 states and 413702 transitions. Second operand 3 states. [2020-10-12 15:59:37,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:59:37,934 INFO L93 Difference]: Finished difference Result 503820 states and 618504 transitions. [2020-10-12 15:59:37,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:59:37,935 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2020-10-12 15:59:37,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:59:38,276 INFO L225 Difference]: With dead ends: 503820 [2020-10-12 15:59:38,277 INFO L226 Difference]: Without dead ends: 339978 [2020-10-12 15:59:38,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:59:38,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339978 states. [2020-10-12 15:59:42,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339978 to 339976. [2020-10-12 15:59:42,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339976 states. [2020-10-12 15:59:43,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339976 states to 339976 states and 413702 transitions. [2020-10-12 15:59:43,047 INFO L78 Accepts]: Start accepts. Automaton has 339976 states and 413702 transitions. Word has length 38 [2020-10-12 15:59:43,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:59:43,047 INFO L479 AbstractCegarLoop]: Abstraction has 339976 states and 413702 transitions. [2020-10-12 15:59:43,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:59:43,047 INFO L276 IsEmpty]: Start isEmpty. Operand 339976 states and 413702 transitions. [2020-10-12 15:59:43,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-12 15:59:43,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:59:43,194 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:59:43,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-12 15:59:43,195 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:59:43,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:59:43,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1299396382, now seen corresponding path program 1 times [2020-10-12 15:59:43,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:59:43,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1393360828] [2020-10-12 15:59:43,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:59:43,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:59:43,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:59:43,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:59:43,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:59:43,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 15:59:43,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:59:43,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 15:59:43,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:59:43,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:59:43,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-12 15:59:43,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 15:59:43,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:59:43,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:59:43,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:59:43,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:59:43,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:59:43,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:59:43,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:59:43,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:59:43,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:59:43,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:59:43,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:59:43,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:59:43,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:59:43,255 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 15:59:43,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1393360828] [2020-10-12 15:59:43,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:59:43,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:59:43,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714664082] [2020-10-12 15:59:43,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:59:43,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:59:43,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:59:43,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:59:43,257 INFO L87 Difference]: Start difference. First operand 339976 states and 413702 transitions. Second operand 3 states. [2020-10-12 15:59:50,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:59:50,685 INFO L93 Difference]: Finished difference Result 557068 states and 679944 transitions. [2020-10-12 15:59:50,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:59:50,685 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2020-10-12 15:59:50,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:59:51,250 INFO L225 Difference]: With dead ends: 557068 [2020-10-12 15:59:51,250 INFO L226 Difference]: Without dead ends: 557066 [2020-10-12 15:59:51,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:59:51,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557066 states. [2020-10-12 16:00:03,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557066 to 524296. [2020-10-12 16:00:03,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524296 states. [2020-10-12 16:00:04,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524296 states to 524296 states and 622598 transitions. [2020-10-12 16:00:04,039 INFO L78 Accepts]: Start accepts. Automaton has 524296 states and 622598 transitions. Word has length 38 [2020-10-12 16:00:04,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:00:04,040 INFO L479 AbstractCegarLoop]: Abstraction has 524296 states and 622598 transitions. [2020-10-12 16:00:04,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 16:00:04,040 INFO L276 IsEmpty]: Start isEmpty. Operand 524296 states and 622598 transitions. [2020-10-12 16:00:04,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-12 16:00:04,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:00:04,352 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:00:04,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-12 16:00:04,352 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:00:04,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:00:04,352 INFO L82 PathProgramCache]: Analyzing trace with hash -694748324, now seen corresponding path program 1 times [2020-10-12 16:00:04,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:00:04,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061557402] [2020-10-12 16:00:04,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:00:04,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:00:04,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:00:04,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:00:04,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:00:04,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 16:00:04,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:00:04,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 16:00:04,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:00:04,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:00:04,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-12 16:00:04,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 16:00:04,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:00:04,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:00:04,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:00:04,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:00:04,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:00:04,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 16:00:04,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:00:04,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 16:00:04,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:00:04,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:00:04,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:00:04,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:00:04,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:00:04,410 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 16:00:04,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2061557402] [2020-10-12 16:00:04,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:00:04,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 16:00:04,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176813890] [2020-10-12 16:00:04,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 16:00:04,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:00:04,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 16:00:04,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 16:00:04,411 INFO L87 Difference]: Start difference. First operand 524296 states and 622598 transitions. Second operand 3 states. [2020-10-12 16:00:17,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:00:17,294 INFO L93 Difference]: Finished difference Result 1179660 states and 1392648 transitions. [2020-10-12 16:00:17,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 16:00:17,295 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2020-10-12 16:00:17,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:00:17,985 INFO L225 Difference]: With dead ends: 1179660 [2020-10-12 16:00:17,985 INFO L226 Difference]: Without dead ends: 663562 [2020-10-12 16:00:18,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 16:00:18,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663562 states. [2020-10-12 16:00:34,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663562 to 663560. [2020-10-12 16:00:34,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 663560 states. [2020-10-12 16:00:43,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663560 states to 663560 states and 770054 transitions. [2020-10-12 16:00:43,133 INFO L78 Accepts]: Start accepts. Automaton has 663560 states and 770054 transitions. Word has length 38 [2020-10-12 16:00:43,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:00:43,134 INFO L479 AbstractCegarLoop]: Abstraction has 663560 states and 770054 transitions. [2020-10-12 16:00:43,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 16:00:43,134 INFO L276 IsEmpty]: Start isEmpty. Operand 663560 states and 770054 transitions. [2020-10-12 16:00:43,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-12 16:00:43,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:00:43,495 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:00:43,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-12 16:00:43,495 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:00:43,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:00:43,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1626798371, now seen corresponding path program 1 times [2020-10-12 16:00:43,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:00:43,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [889063334] [2020-10-12 16:00:43,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:00:43,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:00:43,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:00:43,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:00:43,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:00:43,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:00:43,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-12 16:00:43,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 16:00:43,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-12 16:00:43,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:00:43,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:00:43,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-12 16:00:43,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 16:00:43,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:00:43,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:00:43,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:00:43,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:00:43,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:00:43,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 16:00:43,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:00:43,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 16:00:43,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:00:43,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:00:43,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:00:43,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:00:43,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:00:43,566 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 16:00:43,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [889063334] [2020-10-12 16:00:43,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:00:43,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 16:00:43,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733161780] [2020-10-12 16:00:43,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 16:00:43,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:00:43,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 16:00:43,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 16:00:43,568 INFO L87 Difference]: Start difference. First operand 663560 states and 770054 transitions. Second operand 3 states. [2020-10-12 16:00:52,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:00:52,366 INFO L93 Difference]: Finished difference Result 1073162 states and 1236999 transitions. [2020-10-12 16:00:52,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 16:00:52,366 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-10-12 16:00:52,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:00:54,528 INFO L225 Difference]: With dead ends: 1073162 [2020-10-12 16:00:54,529 INFO L226 Difference]: Without dead ends: 1073160 [2020-10-12 16:00:54,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 16:00:55,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073160 states. [2020-10-12 16:01:17,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073160 to 1040392. [2020-10-12 16:01:17,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1040392 states.