/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label42.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:20:14,971 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:20:14,975 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:20:15,002 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:20:15,002 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:20:15,003 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:20:15,005 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:20:15,007 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:20:15,009 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:20:15,010 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:20:15,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:20:15,015 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:20:15,015 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:20:15,017 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:20:15,021 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:20:15,022 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:20:15,025 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:20:15,029 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:20:15,031 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:20:15,033 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:20:15,035 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:20:15,038 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:20:15,040 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:20:15,041 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:20:15,047 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:20:15,048 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:20:15,048 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:20:15,053 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:20:15,053 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:20:15,054 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:20:15,054 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:20:15,056 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:20:15,057 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:20:15,058 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:20:15,059 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:20:15,059 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:20:15,060 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:20:15,061 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:20:15,061 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:20:15,062 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:20:15,063 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:20:15,064 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 18:20:15,128 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:20:15,128 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:20:15,133 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:20:15,133 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:20:15,133 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:20:15,134 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:20:15,134 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:20:15,134 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:20:15,134 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:20:15,134 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:20:15,135 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:20:15,135 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:20:15,135 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:20:15,135 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:20:15,135 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:20:15,136 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:20:15,136 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:20:15,136 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:20:15,136 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:20:15,136 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:20:15,137 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:20:15,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:20:15,137 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:20:15,137 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:20:15,137 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:20:15,138 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:20:15,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:20:15,138 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:20:15,138 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:20:15,138 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 18:20:15,643 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:20:15,669 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:20:15,674 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:20:15,677 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:20:15,678 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:20:15,680 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label42.c [2020-09-24 18:20:15,774 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74fea9b21/fc449cb4e03a46df8aa89e8f75eee20c/FLAGc193ae4f1 [2020-09-24 18:20:16,441 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:20:16,442 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label42.c [2020-09-24 18:20:16,457 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74fea9b21/fc449cb4e03a46df8aa89e8f75eee20c/FLAGc193ae4f1 [2020-09-24 18:20:16,656 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74fea9b21/fc449cb4e03a46df8aa89e8f75eee20c [2020-09-24 18:20:16,672 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:20:16,678 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:20:16,680 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:20:16,680 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:20:16,685 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:20:16,687 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:20:16" (1/1) ... [2020-09-24 18:20:16,693 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e164ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:16, skipping insertion in model container [2020-09-24 18:20:16,693 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:20:16" (1/1) ... [2020-09-24 18:20:16,703 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:20:16,776 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:20:17,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:20:17,440 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:20:17,641 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:20:17,670 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:20:17,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:17 WrapperNode [2020-09-24 18:20:17,672 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:20:17,673 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:20:17,673 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:20:17,674 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:20:17,697 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:17" (1/1) ... [2020-09-24 18:20:17,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:17" (1/1) ... [2020-09-24 18:20:17,746 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:17" (1/1) ... [2020-09-24 18:20:17,747 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:17" (1/1) ... [2020-09-24 18:20:17,817 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:17" (1/1) ... [2020-09-24 18:20:17,843 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:17" (1/1) ... [2020-09-24 18:20:17,854 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:17" (1/1) ... [2020-09-24 18:20:17,865 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:20:17,866 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:20:17,866 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:20:17,866 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:20:17,867 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:17" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:20:17,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:20:17,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:20:17,951 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:20:17,951 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:20:17,952 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:20:17,952 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:20:17,952 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:20:17,952 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:20:17,952 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:20:17,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:20:17,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:20:19,480 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:20:19,480 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:20:19,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:20:19 BoogieIcfgContainer [2020-09-24 18:20:19,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:20:19,499 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:20:19,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:20:19,503 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:20:19,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:20:16" (1/3) ... [2020-09-24 18:20:19,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc3148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:20:19, skipping insertion in model container [2020-09-24 18:20:19,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:17" (2/3) ... [2020-09-24 18:20:19,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc3148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:20:19, skipping insertion in model container [2020-09-24 18:20:19,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:20:19" (3/3) ... [2020-09-24 18:20:19,509 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label42.c [2020-09-24 18:20:19,521 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:20:19,535 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:20:19,559 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:20:19,597 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:20:19,598 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:20:19,599 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:20:19,599 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:20:19,599 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:20:19,599 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:20:19,599 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:20:19,600 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:20:19,632 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-24 18:20:19,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-24 18:20:19,655 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:19,657 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] [2020-09-24 18:20:19,658 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:19,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:19,664 INFO L82 PathProgramCache]: Analyzing trace with hash 907543029, now seen corresponding path program 1 times [2020-09-24 18:20:19,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:19,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078676588] [2020-09-24 18:20:19,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:19,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:20,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:20,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:20,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:21,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:24,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:25,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:25,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-24 18:20:25,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:20:25,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5082 [2020-09-24 18:20:25,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:25,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:20:25,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 18:20:25,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-24 18:20:25,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-24 18:20:25,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:20:25,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:25,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:25,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:25,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:25,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:25,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 18:20:25,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:25,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:20:25,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:25,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 18:20:25,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:25,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:20:25,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078676588] [2020-09-24 18:20:25,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:20:25,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:20:25,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273783044] [2020-09-24 18:20:25,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:20:25,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:20:25,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:20:25,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:20:25,428 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-24 18:20:27,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:20:27,635 INFO L93 Difference]: Finished difference Result 1235 states and 1633 transitions. [2020-09-24 18:20:27,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:20:27,637 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-09-24 18:20:27,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:20:27,663 INFO L225 Difference]: With dead ends: 1235 [2020-09-24 18:20:27,663 INFO L226 Difference]: Without dead ends: 661 [2020-09-24 18:20:27,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:20:27,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2020-09-24 18:20:27,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 605. [2020-09-24 18:20:27,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2020-09-24 18:20:27,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 715 transitions. [2020-09-24 18:20:27,780 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 715 transitions. Word has length 143 [2020-09-24 18:20:27,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:20:27,781 INFO L479 AbstractCegarLoop]: Abstraction has 605 states and 715 transitions. [2020-09-24 18:20:27,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:20:27,781 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 715 transitions. [2020-09-24 18:20:27,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-24 18:20:27,789 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:27,790 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 18:20:27,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:20:27,791 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:27,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:27,791 INFO L82 PathProgramCache]: Analyzing trace with hash 201587256, now seen corresponding path program 1 times [2020-09-24 18:20:27,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:27,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1483056613] [2020-09-24 18:20:27,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:27,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:27,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:27,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:28,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:28,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:31,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:31,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:31,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:32,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:32,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-24 18:20:32,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:20:32,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-24 18:20:32,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:32,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:32,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-24 18:20:32,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-24 18:20:32,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:33,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:20:33,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:33,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:33,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:33,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:33,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:33,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-24 18:20:33,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:33,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:20:33,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:33,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:20:33,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:33,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:20:33,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:33,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:33,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:33,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:20:33,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:33,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:20:33,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:33,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:20:33,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:33,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 18:20:33,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:33,193 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:20:33,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1483056613] [2020-09-24 18:20:33,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:20:33,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:20:33,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063407059] [2020-09-24 18:20:33,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:20:33,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:20:33,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:20:33,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:20:33,202 INFO L87 Difference]: Start difference. First operand 605 states and 715 transitions. Second operand 5 states. [2020-09-24 18:20:35,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:20:35,237 INFO L93 Difference]: Finished difference Result 1505 states and 1856 transitions. [2020-09-24 18:20:35,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:20:35,238 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-09-24 18:20:35,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:20:35,247 INFO L225 Difference]: With dead ends: 1505 [2020-09-24 18:20:35,247 INFO L226 Difference]: Without dead ends: 924 [2020-09-24 18:20:35,251 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 [2020-09-24 18:20:35,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2020-09-24 18:20:35,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 891. [2020-09-24 18:20:35,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2020-09-24 18:20:35,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1084 transitions. [2020-09-24 18:20:35,292 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1084 transitions. Word has length 160 [2020-09-24 18:20:35,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:20:35,293 INFO L479 AbstractCegarLoop]: Abstraction has 891 states and 1084 transitions. [2020-09-24 18:20:35,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:20:35,293 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1084 transitions. [2020-09-24 18:20:35,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-09-24 18:20:35,300 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:35,300 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:20:35,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:20:35,301 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:35,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:35,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1554589942, now seen corresponding path program 1 times [2020-09-24 18:20:35,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:35,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1386790136] [2020-09-24 18:20:35,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:35,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:35,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:35,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:35,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:35,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:36,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:37,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:40,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:40,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-09-24 18:20:40,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:20:40,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-09-24 18:20:40,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:40,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:40,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 18:20:40,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 18:20:40,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:40,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:20:40,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:40,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:40,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:40,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:40,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:40,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:20:40,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:40,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:20:40,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:40,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:20:40,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:40,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:20:40,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:40,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:40,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:40,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 18:20:40,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:40,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 18:20:40,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:40,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:20:40,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:40,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:20:40,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:40,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 18:20:40,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:40,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:40,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:40,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 18:20:40,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:40,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-24 18:20:40,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:40,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:40,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:20:40,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 18:20:40,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:40,815 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:20:40,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1386790136] [2020-09-24 18:20:40,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:20:40,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:20:40,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147534734] [2020-09-24 18:20:40,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:20:40,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:20:40,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:20:40,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:20:40,820 INFO L87 Difference]: Start difference. First operand 891 states and 1084 transitions. Second operand 7 states. [2020-09-24 18:20:42,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:20:42,954 INFO L93 Difference]: Finished difference Result 2144 states and 2702 transitions. [2020-09-24 18:20:42,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:20:42,955 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 205 [2020-09-24 18:20:42,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:20:42,966 INFO L225 Difference]: With dead ends: 2144 [2020-09-24 18:20:42,967 INFO L226 Difference]: Without dead ends: 1277 [2020-09-24 18:20:42,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:20:42,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2020-09-24 18:20:43,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1077. [2020-09-24 18:20:43,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1077 states. [2020-09-24 18:20:43,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1328 transitions. [2020-09-24 18:20:43,028 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1328 transitions. Word has length 205 [2020-09-24 18:20:43,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:20:43,029 INFO L479 AbstractCegarLoop]: Abstraction has 1077 states and 1328 transitions. [2020-09-24 18:20:43,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:20:43,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1328 transitions. [2020-09-24 18:20:43,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-24 18:20:43,037 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:43,037 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:20:43,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:20:43,037 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:43,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:43,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1933456907, now seen corresponding path program 1 times [2020-09-24 18:20:43,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:43,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [893364309] [2020-09-24 18:20:43,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:43,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:43,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:43,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:43,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:44,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:44,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:46,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:47,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:48,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:48,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:48,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:48,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-09-24 18:20:48,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 18:20:48,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-09-24 18:20:48,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:48,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:20:48,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-24 18:20:48,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-24 18:20:48,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:48,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:20:48,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:48,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:48,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:48,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:48,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:48,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:20:48,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:48,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:20:48,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:48,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:20:48,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:48,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:20:48,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:48,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:48,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:48,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 18:20:48,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:48,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-24 18:20:48,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:48,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:20:48,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:48,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 18:20:48,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:20:48,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 18:20:48,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:48,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:48,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:48,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 18:20:48,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:48,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-24 18:20:48,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:48,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:48,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:20:48,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 18:20:48,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:48,919 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 66 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:20:48,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [893364309] [2020-09-24 18:20:48,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:20:48,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 18:20:48,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516571731] [2020-09-24 18:20:48,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 18:20:48,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:20:48,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 18:20:48,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:20:48,924 INFO L87 Difference]: Start difference. First operand 1077 states and 1328 transitions. Second operand 8 states. [2020-09-24 18:20:49,677 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2020-09-24 18:20:52,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:20:52,546 INFO L93 Difference]: Finished difference Result 2864 states and 3603 transitions. [2020-09-24 18:20:52,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 18:20:52,547 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 212 [2020-09-24 18:20:52,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:20:52,560 INFO L225 Difference]: With dead ends: 2864 [2020-09-24 18:20:52,560 INFO L226 Difference]: Without dead ends: 1811 [2020-09-24 18:20:52,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-09-24 18:20:52,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1811 states. [2020-09-24 18:20:52,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1811 to 1701. [2020-09-24 18:20:52,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1701 states. [2020-09-24 18:20:52,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1701 states to 1701 states and 2088 transitions. [2020-09-24 18:20:52,626 INFO L78 Accepts]: Start accepts. Automaton has 1701 states and 2088 transitions. Word has length 212 [2020-09-24 18:20:52,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:20:52,627 INFO L479 AbstractCegarLoop]: Abstraction has 1701 states and 2088 transitions. [2020-09-24 18:20:52,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 18:20:52,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1701 states and 2088 transitions. [2020-09-24 18:20:52,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-09-24 18:20:52,637 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:52,638 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:20:52,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:20:52,638 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:52,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:52,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1545156718, now seen corresponding path program 1 times [2020-09-24 18:20:52,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:52,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [197727691] [2020-09-24 18:20:52,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:52,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:52,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:52,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:53,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:53,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:53,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:53,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:53,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:53,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:54,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:54,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:57,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:57,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-09-24 18:20:57,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 18:20:57,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 18:20:57,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:57,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:57,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-09-24 18:20:57,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-24 18:20:57,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:57,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:20:57,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:57,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:57,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:57,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:57,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:57,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:20:57,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:57,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:20:57,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:57,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:20:57,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:57,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:20:57,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:57,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:57,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:57,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 18:20:57,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:57,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:20:57,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:57,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:20:57,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:57,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:20:57,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:57,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 18:20:57,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:57,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:57,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:57,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 18:20:57,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:57,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-24 18:20:57,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:57,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:20:57,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:57,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-24 18:20:57,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:58,087 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-24 18:20:58,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [197727691] [2020-09-24 18:20:58,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:20:58,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:20:58,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118553315] [2020-09-24 18:20:58,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:20:58,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:20:58,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:20:58,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:20:58,090 INFO L87 Difference]: Start difference. First operand 1701 states and 2088 transitions. Second operand 5 states. [2020-09-24 18:21:00,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:00,302 INFO L93 Difference]: Finished difference Result 4495 states and 5657 transitions. [2020-09-24 18:21:00,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:21:00,303 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 227 [2020-09-24 18:21:00,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:00,319 INFO L225 Difference]: With dead ends: 4495 [2020-09-24 18:21:00,320 INFO L226 Difference]: Without dead ends: 2818 [2020-09-24 18:21:00,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:21:00,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2818 states. [2020-09-24 18:21:00,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2818 to 2420. [2020-09-24 18:21:00,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2420 states. [2020-09-24 18:21:00,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2420 states to 2420 states and 2932 transitions. [2020-09-24 18:21:00,394 INFO L78 Accepts]: Start accepts. Automaton has 2420 states and 2932 transitions. Word has length 227 [2020-09-24 18:21:00,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:00,395 INFO L479 AbstractCegarLoop]: Abstraction has 2420 states and 2932 transitions. [2020-09-24 18:21:00,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:21:00,395 INFO L276 IsEmpty]: Start isEmpty. Operand 2420 states and 2932 transitions. [2020-09-24 18:21:00,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-09-24 18:21:00,405 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:00,406 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:21:00,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:21:00,406 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:00,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:00,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1681345015, now seen corresponding path program 1 times [2020-09-24 18:21:00,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:00,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718968854] [2020-09-24 18:21:00,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:00,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:00,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:00,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:00,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:01,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:01,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:03,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:04,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:04,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:04,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking...