/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label39.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 01:00:25,878 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 01:00:25,883 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 01:00:25,927 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-09-25 01:00:25,950 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 01:00:25,953 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 01:00:25,956 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 01:00:25,958 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 01:00:25,960 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 01:00:25,961 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 01:00:25,962 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 01:00:25,971 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 01:00:25,973 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 01:00:25,974 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 01:00:25,976 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 01:00:25,977 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 01:00:25,989 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-25 01:00:26,011 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 01:00:26,012 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 01:00:26,013 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 01:00:26,014 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 01:00:26,056 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 01:00:26,057 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 01:00:26,058 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 01:00:26,058 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 01:00:26,058 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 01:00:26,059 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 01:00:26,059 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 01:00:26,059 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 01:00:26,059 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 01:00:26,059 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 01:00:26,060 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 01:00:26,060 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 01:00:26,060 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 01:00:26,060 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 01:00:26,060 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 01:00:26,061 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 01:00:26,061 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 01:00:26,061 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 01:00:26,061 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 01:00:26,062 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 01:00:26,062 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 01:00:26,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:00:26,062 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 01:00:26,062 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 01:00:26,063 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 01:00:26,063 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 01:00:26,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 01:00:26,063 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 01:00:26,063 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 01:00:26,064 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; [2020-09-25 01:00:26,530 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 01:00:26,557 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 01:00:26,563 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 01:00:26,566 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 01:00:26,566 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 01:00:26,568 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label39.c [2020-09-25 01:00:26,657 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb16c5824/10ba1d44290144c3b77d9ded4a323568/FLAG8a79f4a43 [2020-09-25 01:00:27,330 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 01:00:27,331 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label39.c [2020-09-25 01:00:27,345 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb16c5824/10ba1d44290144c3b77d9ded4a323568/FLAG8a79f4a43 [2020-09-25 01:00:27,584 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb16c5824/10ba1d44290144c3b77d9ded4a323568 [2020-09-25 01:00:27,599 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 01:00:27,606 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 01:00:27,610 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 01:00:27,611 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 01:00:27,615 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 01:00:27,616 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:00:27" (1/1) ... [2020-09-25 01:00:27,621 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f80c2a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:00:27, skipping insertion in model container [2020-09-25 01:00:27,621 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:00:27" (1/1) ... [2020-09-25 01:00:27,631 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 01:00:27,710 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 01:00:28,192 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:00:28,199 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 01:00:28,427 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:00:28,446 INFO L208 MainTranslator]: Completed translation [2020-09-25 01:00:28,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:00:28 WrapperNode [2020-09-25 01:00:28,447 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 01:00:28,448 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 01:00:28,448 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 01:00:28,448 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 01:00:28,462 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:00:28" (1/1) ... [2020-09-25 01:00:28,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:00:28" (1/1) ... [2020-09-25 01:00:28,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:00:28" (1/1) ... [2020-09-25 01:00:28,496 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:00:28" (1/1) ... [2020-09-25 01:00:28,539 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:00:28" (1/1) ... [2020-09-25 01:00:28,567 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:00:28" (1/1) ... [2020-09-25 01:00:28,577 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:00:28" (1/1) ... [2020-09-25 01:00:28,585 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 01:00:28,586 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 01:00:28,586 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 01:00:28,587 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 01:00:28,588 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:00:28" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:00:28,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 01:00:28,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 01:00:28,683 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 01:00:28,683 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 01:00:28,683 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 01:00:28,683 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 01:00:28,684 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 01:00:28,684 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 01:00:28,684 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 01:00:28,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 01:00:28,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 01:00:30,106 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 01:00:30,107 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 01:00:30,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:00:30 BoogieIcfgContainer [2020-09-25 01:00:30,117 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 01:00:30,119 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 01:00:30,119 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 01:00:30,124 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 01:00:30,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:00:27" (1/3) ... [2020-09-25 01:00:30,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9e9bc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:00:30, skipping insertion in model container [2020-09-25 01:00:30,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:00:28" (2/3) ... [2020-09-25 01:00:30,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9e9bc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:00:30, skipping insertion in model container [2020-09-25 01:00:30,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:00:30" (3/3) ... [2020-09-25 01:00:30,128 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label39.c [2020-09-25 01:00:30,143 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 01:00:30,155 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 01:00:30,182 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 01:00:30,231 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 01:00:30,232 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 01:00:30,232 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 01:00:30,232 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 01:00:30,232 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 01:00:30,233 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 01:00:30,233 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 01:00:30,233 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 01:00:30,283 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 01:00:30,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 01:00:30,324 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:00:30,325 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:00:30,326 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:00:30,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:00:30,335 INFO L82 PathProgramCache]: Analyzing trace with hash -2068005297, now seen corresponding path program 1 times [2020-09-25 01:00:30,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:00:30,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251981973] [2020-09-25 01:00:30,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:00:30,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:00:30,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:31,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:31,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:32,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:33,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:33,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:35,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:00:35,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-09-25 01:00:35,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 01:00:35,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 01:00:35,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:00:35,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 01:00:35,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 01:00:35,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-09-25 01:00:35,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 01:00:35,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:00:35,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:00:36,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:36,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:00:36,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 01:00:36,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:00:36,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 01:00:36,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:00:36,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:00:36,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:00:36,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 01:00:36,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 01:00:36,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:00:36,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251981973] [2020-09-25 01:00:36,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:00:36,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 01:00:36,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90377938] [2020-09-25 01:00:36,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 01:00:36,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:00:36,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 01:00:36,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:00:36,202 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 5 states. [2020-09-25 01:00:39,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:00:39,246 INFO L93 Difference]: Finished difference Result 1360 states and 1895 transitions. [2020-09-25 01:00:39,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 01:00:39,249 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-09-25 01:00:39,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:00:39,278 INFO L225 Difference]: With dead ends: 1360 [2020-09-25 01:00:39,278 INFO L226 Difference]: Without dead ends: 781 [2020-09-25 01:00:39,290 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 01:00:39,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2020-09-25 01:00:39,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 746. [2020-09-25 01:00:39,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 746 states. [2020-09-25 01:00:39,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 914 transitions. [2020-09-25 01:00:39,413 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 914 transitions. Word has length 160 [2020-09-25 01:00:39,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:00:39,414 INFO L479 AbstractCegarLoop]: Abstraction has 746 states and 914 transitions. [2020-09-25 01:00:39,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 01:00:39,415 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 914 transitions. [2020-09-25 01:00:39,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 01:00:39,421 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:00:39,421 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:00:39,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 01:00:39,422 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:00:39,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:00:39,423 INFO L82 PathProgramCache]: Analyzing trace with hash -32611680, now seen corresponding path program 1 times [2020-09-25 01:00:39,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:00:39,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37458673] [2020-09-25 01:00:39,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:00:39,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:00:39,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:39,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:39,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:40,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:40,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:40,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:42,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:43,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:44,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:00:44,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-25 01:00:44,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 01:00:44,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-09-25 01:00:44,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:00:44,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 01:00:44,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 01:00:44,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 01:00:44,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:00:44,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:00:44,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:00:44,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:44,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:00:44,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 01:00:44,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:00:44,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 01:00:44,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:00:44,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:00:44,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:00:44,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:00:44,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:00:44,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 01:00:44,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:00:44,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:44,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:00:44,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 01:00:44,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:00:44,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 01:00:44,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:00:44,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 01:00:44,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:00:44,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 01:00:44,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:00:45,249 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:00:45,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [37458673] [2020-09-25 01:00:45,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:00:45,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 01:00:45,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702050584] [2020-09-25 01:00:45,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 01:00:45,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:00:45,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 01:00:45,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 01:00:45,259 INFO L87 Difference]: Start difference. First operand 746 states and 914 transitions. Second operand 9 states. [2020-09-25 01:00:50,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:00:50,475 INFO L93 Difference]: Finished difference Result 2190 states and 2898 transitions. [2020-09-25 01:00:50,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 01:00:50,476 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 181 [2020-09-25 01:00:50,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:00:50,484 INFO L225 Difference]: With dead ends: 2190 [2020-09-25 01:00:50,484 INFO L226 Difference]: Without dead ends: 1030 [2020-09-25 01:00:50,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2020-09-25 01:00:50,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2020-09-25 01:00:50,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 1003. [2020-09-25 01:00:50,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1003 states. [2020-09-25 01:00:50,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1169 transitions. [2020-09-25 01:00:50,543 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1169 transitions. Word has length 181 [2020-09-25 01:00:50,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:00:50,544 INFO L479 AbstractCegarLoop]: Abstraction has 1003 states and 1169 transitions. [2020-09-25 01:00:50,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 01:00:50,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1169 transitions. [2020-09-25 01:00:50,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-09-25 01:00:50,548 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:00:50,549 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:00:50,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 01:00:50,549 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:00:50,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:00:50,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1214079671, now seen corresponding path program 1 times [2020-09-25 01:00:50,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:00:50,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [40448835] [2020-09-25 01:00:50,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:00:50,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:00:50,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:50,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:50,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:50,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:51,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:51,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:51,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:51,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:52,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:52,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:55,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:00:55,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-09-25 01:00:55,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 01:00:55,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 01:00:55,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:00:55,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:00:55,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-09-25 01:00:55,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-25 01:00:55,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:00:55,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:00:55,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:00:55,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:55,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:00:55,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 01:00:55,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:00:55,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 01:00:55,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:00:55,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:00:55,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:00:55,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:00:55,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:00:55,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 01:00:55,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:00:55,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:55,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:00:55,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 01:00:55,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:00:55,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 01:00:55,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:00:55,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:00:55,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:00:55,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 01:00:55,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:00:55,919 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:00:55,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [40448835] [2020-09-25 01:00:55,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:00:55,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 01:00:55,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260739450] [2020-09-25 01:00:55,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 01:00:55,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:00:55,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 01:00:55,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:00:55,924 INFO L87 Difference]: Start difference. First operand 1003 states and 1169 transitions. Second operand 5 states. [2020-09-25 01:00:58,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:00:58,040 INFO L93 Difference]: Finished difference Result 2649 states and 3191 transitions. [2020-09-25 01:00:58,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 01:00:58,041 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-09-25 01:00:58,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:00:58,053 INFO L225 Difference]: With dead ends: 2649 [2020-09-25 01:00:58,054 INFO L226 Difference]: Without dead ends: 1513 [2020-09-25 01:00:58,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 01:00:58,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1513 states. [2020-09-25 01:00:58,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1513 to 1277. [2020-09-25 01:00:58,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1277 states. [2020-09-25 01:00:58,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 1519 transitions. [2020-09-25 01:00:58,123 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 1519 transitions. Word has length 185 [2020-09-25 01:00:58,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:00:58,129 INFO L479 AbstractCegarLoop]: Abstraction has 1277 states and 1519 transitions. [2020-09-25 01:00:58,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 01:00:58,130 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 1519 transitions. [2020-09-25 01:00:58,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-09-25 01:00:58,138 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:00:58,138 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:00:58,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 01:00:58,139 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:00:58,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:00:58,140 INFO L82 PathProgramCache]: Analyzing trace with hash -755339745, now seen corresponding path program 1 times [2020-09-25 01:00:58,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:00:58,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [180384078] [2020-09-25 01:00:58,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:00:58,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:00:58,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:58,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:58,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:58,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:59,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:01:00,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:01:01,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:01:01,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:01:01,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:01:01,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:01:02,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:01:03,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:01:03,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:01:03,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-09-25 01:01:03,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 01:01:03,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-09-25 01:01:03,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:01:03,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:01:03,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 01:01:03,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-09-25 01:01:03,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:01:03,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:01:03,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:01:03,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:01:03,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:01:03,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 01:01:03,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:01:03,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 01:01:03,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:01:03,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:01:03,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:01:03,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:01:03,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:01:03,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 01:01:03,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:01:03,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:01:03,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:01:03,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 01:01:03,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:01:03,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 01:01:03,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:01:03,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:01:03,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:01:03,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 01:01:03,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 01:01:03,489 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:01:03,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [180384078] [2020-09-25 01:01:03,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:01:03,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 01:01:03,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204180389] [2020-09-25 01:01:03,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 01:01:03,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:01:03,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 01:01:03,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:01:03,494 INFO L87 Difference]: Start difference. First operand 1277 states and 1519 transitions. Second operand 5 states. [2020-09-25 01:01:05,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:01:05,863 INFO L93 Difference]: Finished difference Result 3205 states and 3935 transitions. [2020-09-25 01:01:05,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 01:01:05,867 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 188 [2020-09-25 01:01:05,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:01:05,880 INFO L225 Difference]: With dead ends: 3205 [2020-09-25 01:01:05,880 INFO L226 Difference]: Without dead ends: 1952 [2020-09-25 01:01:05,885 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 01:01:05,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1952 states. [2020-09-25 01:01:05,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1952 to 1851. [2020-09-25 01:01:05,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1851 states. [2020-09-25 01:01:05,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1851 states to 1851 states and 2241 transitions. [2020-09-25 01:01:05,965 INFO L78 Accepts]: Start accepts. Automaton has 1851 states and 2241 transitions. Word has length 188 [2020-09-25 01:01:05,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:01:05,966 INFO L479 AbstractCegarLoop]: Abstraction has 1851 states and 2241 transitions. [2020-09-25 01:01:05,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 01:01:05,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1851 states and 2241 transitions. [2020-09-25 01:01:05,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-09-25 01:01:05,979 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:01:05,979 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:01:05,979 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 01:01:05,980 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:01:05,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:01:05,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1232404641, now seen corresponding path program 1 times [2020-09-25 01:01:05,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:01:05,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [662618691] [2020-09-25 01:01:05,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:01:06,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:01:06,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:01:06,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:01:06,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:01:06,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:01:09,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:01:09,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:01:09,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:01:09,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:01:10,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:01:10,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:01:11,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:01:11,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-09-25 01:01:11,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 01:01:11,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 01:01:11,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:01:11,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 01:01:11,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-09-25 01:01:11,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 01:01:11,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:01:11,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:01:11,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:01:11,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:01:11,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:01:11,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 01:01:11,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:01:11,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 01:01:11,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:01:11,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:01:11,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:01:11,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:01:11,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 01:01:11,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 01:01:11,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:01:11,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:01:11,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:01:11,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 01:01:11,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:01:11,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 01:01:11,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:01:11,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:01:11,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:01:11,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:01:11,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:01:11,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 01:01:11,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:01:11,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:01:11,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:01:11,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 01:01:11,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:01:11,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 01:01:11,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:01:11,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 01:01:11,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:01:11,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 01:01:11,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:01:12,113 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-25 01:01:12,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [662618691] [2020-09-25 01:01:12,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:01:12,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 01:01:12,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896403458] [2020-09-25 01:01:12,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 01:01:12,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:01:12,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 01:01:12,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-09-25 01:01:12,115 INFO L87 Difference]: Start difference. First operand 1851 states and 2241 transitions. Second operand 16 states. [2020-09-25 01:01:13,808 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-09-25 01:01:14,522 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 90 [2020-09-25 01:01:14,959 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 89 [2020-09-25 01:01:15,484 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 88 [2020-09-25 01:01:15,782 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 87 [2020-09-25 01:01:16,378 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 85