/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:38:41,571 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:38:41,573 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:38:41,600 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:38:41,600 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:38:41,602 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:38:41,603 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:38:41,605 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:38:41,607 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:38:41,607 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:38:41,609 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:38:41,610 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:38:41,610 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:38:41,612 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:38:41,613 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:38:41,614 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:38:41,615 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:38:41,616 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:38:41,617 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:38:41,619 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:38:41,622 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:38:41,623 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:38:41,624 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:38:41,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:38:41,627 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:38:41,628 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:38:41,628 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:38:41,629 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:38:41,629 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:38:41,630 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:38:41,631 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:38:41,631 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:38:41,632 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:38:41,633 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:38:41,634 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:38:41,634 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:38:41,635 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:38:41,635 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:38:41,635 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:38:41,636 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:38:41,637 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:38:41,638 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 09:38:41,665 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:38:41,665 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:38:41,666 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:38:41,666 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:38:41,667 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:38:41,667 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:38:41,667 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:38:41,667 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:38:41,668 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:38:41,668 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:38:41,670 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:38:41,670 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:38:41,670 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:38:41,671 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:38:41,671 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:38:41,671 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:38:41,671 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:38:41,671 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:38:41,672 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:38:41,672 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:38:41,672 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:38:41,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:38:41,673 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:38:41,673 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:38:41,676 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:38:41,676 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:38:41,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:38:41,677 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:38:41,677 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:38:41,677 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 09:38:42,025 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:38:42,051 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:38:42,059 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:38:42,061 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:38:42,062 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:38:42,063 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label46.c [2020-10-13 09:38:42,147 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/816ad5938/7ab9ad6e0895415e89dba51fb3c7a7dd/FLAG02a684cf7 [2020-10-13 09:38:42,984 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:38:42,985 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label46.c [2020-10-13 09:38:43,014 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/816ad5938/7ab9ad6e0895415e89dba51fb3c7a7dd/FLAG02a684cf7 [2020-10-13 09:38:43,524 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/816ad5938/7ab9ad6e0895415e89dba51fb3c7a7dd [2020-10-13 09:38:43,537 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:38:43,539 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:38:43,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:38:43,541 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:38:43,544 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:38:43,546 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:38:43" (1/1) ... [2020-10-13 09:38:43,550 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2016f310 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:43, skipping insertion in model container [2020-10-13 09:38:43,550 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:38:43" (1/1) ... [2020-10-13 09:38:43,562 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:38:43,682 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:38:45,023 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:38:45,035 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:38:45,519 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:38:45,548 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:38:45,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:45 WrapperNode [2020-10-13 09:38:45,550 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:38:45,551 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:38:45,551 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:38:45,552 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:38:45,568 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:45" (1/1) ... [2020-10-13 09:38:45,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:45" (1/1) ... [2020-10-13 09:38:45,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:45" (1/1) ... [2020-10-13 09:38:45,635 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:45" (1/1) ... [2020-10-13 09:38:45,749 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:45" (1/1) ... [2020-10-13 09:38:45,789 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:45" (1/1) ... [2020-10-13 09:38:45,828 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:45" (1/1) ... [2020-10-13 09:38:45,866 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:38:45,867 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:38:45,867 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:38:45,867 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:38:45,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:45" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:38:45,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:38:45,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:38:45,943 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:38:45,944 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:38:45,944 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:38:45,944 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:38:45,945 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:38:45,945 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:38:45,945 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:38:45,945 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:38:45,945 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:38:45,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:38:45,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:38:52,794 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:38:52,794 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:38:52,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:38:52 BoogieIcfgContainer [2020-10-13 09:38:52,806 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:38:52,807 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:38:52,807 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:38:52,811 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:38:52,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:38:43" (1/3) ... [2020-10-13 09:38:52,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18c76bb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:38:52, skipping insertion in model container [2020-10-13 09:38:52,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:45" (2/3) ... [2020-10-13 09:38:52,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18c76bb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:38:52, skipping insertion in model container [2020-10-13 09:38:52,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:38:52" (3/3) ... [2020-10-13 09:38:52,816 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label46.c [2020-10-13 09:38:52,829 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:38:52,839 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:38:52,856 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:38:52,890 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:38:52,891 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:38:52,891 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:38:52,891 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:38:52,891 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:38:52,891 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:38:52,892 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:38:52,892 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:38:52,928 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-13 09:38:52,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-13 09:38:52,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:38:52,937 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:38:52,938 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:38:52,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:38:52,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1915873023, now seen corresponding path program 1 times [2020-10-13 09:38:52,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:38:52,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [678525239] [2020-10-13 09:38:52,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:38:53,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:38:53,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:38:53,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:38:53,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 09:38:53,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:38:53,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 361 [2020-10-13 09:38:53,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:38:53,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:38:53,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:38:53,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 09:38:53,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:38:53,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:38:53,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:38:53,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:38:53,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:38:53,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:38:53,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:38:53,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 09:38:53,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:38:53,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:38:53,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:38:53,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:38:53,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:38:53,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:38:53,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [678525239] [2020-10-13 09:38:53,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:38:53,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:38:53,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714239444] [2020-10-13 09:38:53,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:38:53,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:38:53,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:38:53,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:38:53,722 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-13 09:39:04,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:39:04,539 INFO L93 Difference]: Finished difference Result 1693 states and 3093 transitions. [2020-10-13 09:39:04,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:39:04,542 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-13 09:39:04,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:39:04,569 INFO L225 Difference]: With dead ends: 1693 [2020-10-13 09:39:04,570 INFO L226 Difference]: Without dead ends: 1011 [2020-10-13 09:39:04,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:39:04,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2020-10-13 09:39:04,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 986. [2020-10-13 09:39:04,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 986 states. [2020-10-13 09:39:04,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 1578 transitions. [2020-10-13 09:39:04,718 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 1578 transitions. Word has length 16 [2020-10-13 09:39:04,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:39:04,718 INFO L479 AbstractCegarLoop]: Abstraction has 986 states and 1578 transitions. [2020-10-13 09:39:04,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:39:04,718 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 1578 transitions. [2020-10-13 09:39:04,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-13 09:39:04,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:39:04,726 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] [2020-10-13 09:39:04,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:39:04,727 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:39:04,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:39:04,727 INFO L82 PathProgramCache]: Analyzing trace with hash 141757744, now seen corresponding path program 1 times [2020-10-13 09:39:04,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:39:04,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1434127024] [2020-10-13 09:39:04,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:39:04,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:39:04,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:39:05,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:39:06,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:39:06,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 09:39:06,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:39:06,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1374 [2020-10-13 09:39:06,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:39:06,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:39:06,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-13 09:39:06,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 09:39:06,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:39:06,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:39:06,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:39:06,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:39:06,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:39:06,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:39:06,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:39:06,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:39:06,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:39:06,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:39:06,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:39:06,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:39:06,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-13 09:39:06,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:39:06,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:39:06,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:39:06,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:39:06,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:39:06,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:39:06,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-13 09:39:06,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:39:06,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:39:06,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:39:06,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:39:06,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:39:06,454 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:39:06,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1434127024] [2020-10-13 09:39:06,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:39:06,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:39:06,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525429831] [2020-10-13 09:39:06,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:39:06,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:39:06,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:39:06,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:39:06,461 INFO L87 Difference]: Start difference. First operand 986 states and 1578 transitions. Second operand 5 states. [2020-10-13 09:39:19,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:39:19,561 INFO L93 Difference]: Finished difference Result 2874 states and 4638 transitions. [2020-10-13 09:39:19,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:39:19,562 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-10-13 09:39:19,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:39:19,574 INFO L225 Difference]: With dead ends: 2874 [2020-10-13 09:39:19,575 INFO L226 Difference]: Without dead ends: 1894 [2020-10-13 09:39:19,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:39:19,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1894 states. [2020-10-13 09:39:19,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1894 to 1882. [2020-10-13 09:39:19,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1882 states. [2020-10-13 09:39:19,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1882 states to 1882 states and 2777 transitions. [2020-10-13 09:39:19,659 INFO L78 Accepts]: Start accepts. Automaton has 1882 states and 2777 transitions. Word has length 85 [2020-10-13 09:39:19,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:39:19,660 INFO L479 AbstractCegarLoop]: Abstraction has 1882 states and 2777 transitions. [2020-10-13 09:39:19,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:39:19,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1882 states and 2777 transitions. [2020-10-13 09:39:19,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-13 09:39:19,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:39:19,667 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] [2020-10-13 09:39:19,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:39:19,667 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:39:19,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:39:19,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1967945224, now seen corresponding path program 1 times [2020-10-13 09:39:19,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:39:19,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1822992580] [2020-10-13 09:39:19,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:39:19,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:39:19,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:39:20,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:39:20,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 09:39:20,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:39:20,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-10-13 09:39:20,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:39:20,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:39:20,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 09:39:20,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 09:39:20,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:39:20,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:39:20,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:39:20,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:39:20,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:39:20,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:39:20,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:39:20,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:39:20,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:39:20,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:39:20,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:39:20,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:39:20,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:39:20,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:39:20,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:39:20,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:39:20,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:39:20,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:39:20,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:39:20,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-13 09:39:20,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:39:20,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:39:20,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:39:20,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 09:39:20,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:39:20,331 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:39:20,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1822992580] [2020-10-13 09:39:20,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:39:20,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:39:20,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392581407] [2020-10-13 09:39:20,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:39:20,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:39:20,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:39:20,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:39:20,334 INFO L87 Difference]: Start difference. First operand 1882 states and 2777 transitions. Second operand 5 states. [2020-10-13 09:39:36,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:39:36,023 INFO L93 Difference]: Finished difference Result 5528 states and 8247 transitions. [2020-10-13 09:39:36,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:39:36,027 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-10-13 09:39:36,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:39:36,055 INFO L225 Difference]: With dead ends: 5528 [2020-10-13 09:39:36,055 INFO L226 Difference]: Without dead ends: 3652 [2020-10-13 09:39:36,061 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:39:36,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3652 states. [2020-10-13 09:39:36,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3652 to 3642. [2020-10-13 09:39:36,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3642 states. [2020-10-13 09:39:36,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3642 states to 3642 states and 4859 transitions. [2020-10-13 09:39:36,201 INFO L78 Accepts]: Start accepts. Automaton has 3642 states and 4859 transitions. Word has length 90 [2020-10-13 09:39:36,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:39:36,202 INFO L479 AbstractCegarLoop]: Abstraction has 3642 states and 4859 transitions. [2020-10-13 09:39:36,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:39:36,203 INFO L276 IsEmpty]: Start isEmpty. Operand 3642 states and 4859 transitions. [2020-10-13 09:39:36,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-13 09:39:36,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:39:36,215 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] [2020-10-13 09:39:36,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:39:36,216 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:39:36,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:39:36,217 INFO L82 PathProgramCache]: Analyzing trace with hash -837990924, now seen corresponding path program 1 times [2020-10-13 09:39:36,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:39:36,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [623682611] [2020-10-13 09:39:36,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:39:36,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:39:36,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:39:36,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:39:37,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:39:37,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 09:39:37,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:39:37,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1044 [2020-10-13 09:39:37,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:39:37,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:39:37,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-13 09:39:37,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 09:39:37,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:39:37,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:39:37,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:39:37,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:39:37,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:39:37,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:39:37,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:39:37,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 09:39:37,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:39:37,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:39:37,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:39:37,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:39:37,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:39:37,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:39:37,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:39:37,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:39:37,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:39:37,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:39:37,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:39:37,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-13 09:39:37,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:39:37,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:39:37,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:39:37,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 09:39:37,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:39:37,761 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:39:37,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [623682611] [2020-10-13 09:39:37,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:39:37,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:39:37,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858382077] [2020-10-13 09:39:37,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:39:37,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:39:37,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:39:37,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:39:37,768 INFO L87 Difference]: Start difference. First operand 3642 states and 4859 transitions. Second operand 5 states. [2020-10-13 09:39:52,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:39:52,440 INFO L93 Difference]: Finished difference Result 7291 states and 10231 transitions. [2020-10-13 09:39:52,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:39:52,442 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 92 [2020-10-13 09:39:52,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:39:52,480 INFO L225 Difference]: With dead ends: 7291 [2020-10-13 09:39:52,480 INFO L226 Difference]: Without dead ends: 5411 [2020-10-13 09:39:52,489 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 [2020-10-13 09:39:52,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5411 states. [2020-10-13 09:39:52,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5411 to 5402. [2020-10-13 09:39:52,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5402 states. [2020-10-13 09:39:52,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5402 states to 5402 states and 6921 transitions. [2020-10-13 09:39:52,717 INFO L78 Accepts]: Start accepts. Automaton has 5402 states and 6921 transitions. Word has length 92 [2020-10-13 09:39:52,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:39:52,719 INFO L479 AbstractCegarLoop]: Abstraction has 5402 states and 6921 transitions. [2020-10-13 09:39:52,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:39:52,720 INFO L276 IsEmpty]: Start isEmpty. Operand 5402 states and 6921 transitions. [2020-10-13 09:39:52,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 09:39:52,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:39:52,722 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] [2020-10-13 09:39:52,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:39:52,723 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:39:52,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:39:52,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1260496857, now seen corresponding path program 1 times [2020-10-13 09:39:52,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:39:52,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1769649541] [2020-10-13 09:39:52,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:39:52,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:39:52,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:39:53,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:39:53,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:39:54,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:39:57,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:39:57,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:39:57,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:39:57,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4738 [2020-10-13 09:39:57,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:39:57,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:39:57,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-13 09:39:57,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 09:39:57,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:39:57,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:39:57,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:39:57,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:39:57,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:39:57,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:39:57,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:39:57,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:39:57,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:39:57,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:39:57,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:39:57,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:39:57,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:39:57,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:39:57,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:39:57,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:39:57,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:39:57,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 09:39:57,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:39:57,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-13 09:39:57,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:39:57,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:39:57,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:39:57,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 09:39:57,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:39:57,856 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:39:57,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1769649541] [2020-10-13 09:39:57,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:39:57,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:39:57,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482529578] [2020-10-13 09:39:57,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:39:57,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:39:57,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:39:57,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:39:57,860 INFO L87 Difference]: Start difference. First operand 5402 states and 6921 transitions. Second operand 5 states. [2020-10-13 09:40:14,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:40:14,518 INFO L93 Difference]: Finished difference Result 9485 states and 12536 transitions. [2020-10-13 09:40:14,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:40:14,525 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-13 09:40:14,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:40:14,560 INFO L225 Difference]: With dead ends: 9485 [2020-10-13 09:40:14,561 INFO L226 Difference]: Without dead ends: 5845 [2020-10-13 09:40:14,573 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 [2020-10-13 09:40:14,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5845 states. [2020-10-13 09:40:14,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5845 to 5837. [2020-10-13 09:40:14,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5837 states. [2020-10-13 09:40:14,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5837 states to 5837 states and 7576 transitions. [2020-10-13 09:40:14,786 INFO L78 Accepts]: Start accepts. Automaton has 5837 states and 7576 transitions. Word has length 102 [2020-10-13 09:40:14,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:40:14,787 INFO L479 AbstractCegarLoop]: Abstraction has 5837 states and 7576 transitions. [2020-10-13 09:40:14,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:40:14,787 INFO L276 IsEmpty]: Start isEmpty. Operand 5837 states and 7576 transitions. [2020-10-13 09:40:14,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 09:40:14,789 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:40:14,789 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] [2020-10-13 09:40:14,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:40:14,790 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:40:14,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:40:14,791 INFO L82 PathProgramCache]: Analyzing trace with hash 3511477, now seen corresponding path program 1 times [2020-10-13 09:40:14,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:40:14,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [728186487] [2020-10-13 09:40:14,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:40:14,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:40:14,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:40:15,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:40:15,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:40:15,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:40:15,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 09:40:15,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:40:15,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 758 [2020-10-13 09:40:15,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:40:15,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:40:15,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-13 09:40:15,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 09:40:15,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:40:15,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:40:15,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:40:15,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:40:15,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:40:15,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:40:15,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:40:15,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:40:15,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:40:15,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:40:15,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:40:15,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:40:15,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:40:15,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:40:15,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:40:15,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:40:15,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:40:15,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 09:40:15,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:40:15,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-13 09:40:15,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:40:15,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:40:15,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:40:15,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 09:40:15,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:40:15,860 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:40:15,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [728186487] [2020-10-13 09:40:15,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:40:15,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:40:15,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184628428] [2020-10-13 09:40:15,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:40:15,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:40:15,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:40:15,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:40:15,866 INFO L87 Difference]: Start difference. First operand 5837 states and 7576 transitions. Second operand 5 states. [2020-10-13 09:40:33,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:40:33,022 INFO L93 Difference]: Finished difference Result 14308 states and 19065 transitions. [2020-10-13 09:40:33,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:40:33,026 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-13 09:40:33,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:40:33,069 INFO L225 Difference]: With dead ends: 14308 [2020-10-13 09:40:33,069 INFO L226 Difference]: Without dead ends: 8477 [2020-10-13 09:40:33,086 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 [2020-10-13 09:40:33,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8477 states. [2020-10-13 09:40:33,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8477 to 8467. [2020-10-13 09:40:33,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8467 states. [2020-10-13 09:40:33,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8467 states to 8467 states and 11147 transitions. [2020-10-13 09:40:33,353 INFO L78 Accepts]: Start accepts. Automaton has 8467 states and 11147 transitions. Word has length 104 [2020-10-13 09:40:33,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:40:33,354 INFO L479 AbstractCegarLoop]: Abstraction has 8467 states and 11147 transitions. [2020-10-13 09:40:33,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:40:33,354 INFO L276 IsEmpty]: Start isEmpty. Operand 8467 states and 11147 transitions. [2020-10-13 09:40:33,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 09:40:33,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:40:33,357 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] [2020-10-13 09:40:33,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:40:33,358 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:40:33,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:40:33,359 INFO L82 PathProgramCache]: Analyzing trace with hash 181204589, now seen corresponding path program 1 times [2020-10-13 09:40:33,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:40:33,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [489450149] [2020-10-13 09:40:33,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:40:33,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:40:33,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:40:33,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:40:34,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:40:34,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 09:40:34,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:40:34,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 761 [2020-10-13 09:40:34,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:40:34,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:40:34,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-13 09:40:34,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 09:40:34,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:40:34,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:40:34,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:40:34,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:40:34,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:40:34,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:40:34,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:40:34,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:40:34,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:40:34,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:40:34,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:40:34,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:40:34,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:40:34,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:40:34,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:40:34,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:40:34,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:40:34,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-13 09:40:34,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:40:34,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-13 09:40:34,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:40:34,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:40:34,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:40:34,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-13 09:40:34,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:40:34,444 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:40:34,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [489450149] [2020-10-13 09:40:34,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:40:34,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:40:34,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680423489] [2020-10-13 09:40:34,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:40:34,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:40:34,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:40:34,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:40:34,448 INFO L87 Difference]: Start difference. First operand 8467 states and 11147 transitions. Second operand 5 states. [2020-10-13 09:40:50,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:40:50,045 INFO L93 Difference]: Finished difference Result 19613 states and 26450 transitions. [2020-10-13 09:40:50,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:40:50,047 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-13 09:40:50,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:40:50,112 INFO L225 Difference]: With dead ends: 19613 [2020-10-13 09:40:50,112 INFO L226 Difference]: Without dead ends: 13776 [2020-10-13 09:40:50,132 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 [2020-10-13 09:40:50,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13776 states. [2020-10-13 09:40:50,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13776 to 13750. [2020-10-13 09:40:50,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13750 states. [2020-10-13 09:40:50,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13750 states to 13750 states and 18438 transitions. [2020-10-13 09:40:50,455 INFO L78 Accepts]: Start accepts. Automaton has 13750 states and 18438 transitions. Word has length 108 [2020-10-13 09:40:50,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:40:50,455 INFO L479 AbstractCegarLoop]: Abstraction has 13750 states and 18438 transitions. [2020-10-13 09:40:50,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:40:50,456 INFO L276 IsEmpty]: Start isEmpty. Operand 13750 states and 18438 transitions. [2020-10-13 09:40:50,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-13 09:40:50,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:40:50,458 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] [2020-10-13 09:40:50,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:40:50,459 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:40:50,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:40:50,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1525639592, now seen corresponding path program 1 times [2020-10-13 09:40:50,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:40:50,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1490701887] [2020-10-13 09:40:50,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:40:50,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:40:50,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:40:50,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:40:51,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:40:51,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 09:40:51,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:40:51,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 857 [2020-10-13 09:40:51,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:40:51,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:40:51,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-13 09:40:51,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 09:40:51,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:40:51,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:40:51,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:40:51,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:40:51,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:40:51,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:40:51,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:40:51,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:40:51,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:40:51,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:40:51,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:40:51,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:40:51,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:40:51,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:40:51,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:40:51,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:40:51,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:40:51,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 09:40:51,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:40:51,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-13 09:40:51,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:40:51,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:40:51,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:40:51,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-13 09:40:51,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:40:51,663 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:40:51,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1490701887] [2020-10-13 09:40:51,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:40:51,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:40:51,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784410211] [2020-10-13 09:40:51,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:40:51,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:40:51,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:40:51,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:40:51,666 INFO L87 Difference]: Start difference. First operand 13750 states and 18438 transitions. Second operand 5 states. [2020-10-13 09:41:09,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:41:09,837 INFO L93 Difference]: Finished difference Result 29706 states and 41186 transitions. [2020-10-13 09:41:09,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:41:09,839 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-13 09:41:09,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:41:09,929 INFO L225 Difference]: With dead ends: 29706 [2020-10-13 09:41:09,930 INFO L226 Difference]: Without dead ends: 18586 [2020-10-13 09:41:09,959 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 [2020-10-13 09:41:09,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18586 states. [2020-10-13 09:41:10,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18586 to 18145. [2020-10-13 09:41:10,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18145 states. [2020-10-13 09:41:10,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18145 states to 18145 states and 23753 transitions. [2020-10-13 09:41:10,364 INFO L78 Accepts]: Start accepts. Automaton has 18145 states and 23753 transitions. Word has length 113 [2020-10-13 09:41:10,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:41:10,364 INFO L479 AbstractCegarLoop]: Abstraction has 18145 states and 23753 transitions. [2020-10-13 09:41:10,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:41:10,365 INFO L276 IsEmpty]: Start isEmpty. Operand 18145 states and 23753 transitions. [2020-10-13 09:41:10,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-13 09:41:10,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:41:10,370 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] [2020-10-13 09:41:10,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:41:10,371 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:41:10,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:41:10,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1059396021, now seen corresponding path program 1 times [2020-10-13 09:41:10,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:41:10,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [191538373] [2020-10-13 09:41:10,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:41:10,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:41:10,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:41:10,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:41:12,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:41:12,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-13 09:41:12,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:41:12,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1869 [2020-10-13 09:41:12,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:41:12,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:41:12,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-13 09:41:12,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 09:41:12,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:41:12,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:41:12,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:41:12,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:41:12,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:41:12,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:41:12,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:41:12,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:41:12,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:41:12,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:41:12,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:41:12,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:41:12,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:41:12,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:41:12,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:41:12,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:41:12,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:41:12,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-13 09:41:12,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:41:12,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-13 09:41:12,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:41:12,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:41:12,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:41:12,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-13 09:41:12,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:41:12,762 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:41:12,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [191538373] [2020-10-13 09:41:12,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:41:12,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:41:12,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009901154] [2020-10-13 09:41:12,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:41:12,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:41:12,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:41:12,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:41:12,771 INFO L87 Difference]: Start difference. First operand 18145 states and 23753 transitions. Second operand 5 states. [2020-10-13 09:41:34,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:41:34,538 INFO L93 Difference]: Finished difference Result 41134 states and 55846 transitions. [2020-10-13 09:41:34,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:41:34,546 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-13 09:41:34,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:41:34,654 INFO L225 Difference]: With dead ends: 41134 [2020-10-13 09:41:34,654 INFO L226 Difference]: Without dead ends: 23428 [2020-10-13 09:41:34,710 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 [2020-10-13 09:41:34,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23428 states. [2020-10-13 09:41:35,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23428 to 23420. [2020-10-13 09:41:35,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23420 states. [2020-10-13 09:41:35,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23420 states to 23420 states and 30997 transitions. [2020-10-13 09:41:35,476 INFO L78 Accepts]: Start accepts. Automaton has 23420 states and 30997 transitions. Word has length 157 [2020-10-13 09:41:35,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:41:35,477 INFO L479 AbstractCegarLoop]: Abstraction has 23420 states and 30997 transitions. [2020-10-13 09:41:35,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:41:35,477 INFO L276 IsEmpty]: Start isEmpty. Operand 23420 states and 30997 transitions. [2020-10-13 09:41:35,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-13 09:41:35,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:41:35,517 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:41:35,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:41:35,518 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:41:35,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:41:35,519 INFO L82 PathProgramCache]: Analyzing trace with hash -2054927989, now seen corresponding path program 1 times [2020-10-13 09:41:35,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:41:35,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [402662676] [2020-10-13 09:41:35,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:41:35,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:41:35,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:41:36,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:41:37,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:41:37,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-13 09:41:37,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:41:37,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1772 [2020-10-13 09:41:37,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:41:37,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:41:37,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:41:37,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-13 09:41:37,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:41:37,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:41:37,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:41:37,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:41:37,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:41:37,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:41:37,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:41:37,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 09:41:37,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:41:37,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:41:37,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:41:37,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:41:37,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:41:37,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:41:37,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:41:37,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:41:37,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:41:37,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 09:41:37,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:41:37,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-13 09:41:37,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:41:37,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:41:37,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:41:37,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 09:41:37,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:41:37,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 09:41:37,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:41:37,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:41:38,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:41:38,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-13 09:41:38,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:41:38,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-13 09:41:38,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:41:38,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:41:38,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-13 09:41:38,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:41:38,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:41:38,516 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 18 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 09:41:38,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [402662676] [2020-10-13 09:41:38,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:41:38,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:41:38,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381360930] [2020-10-13 09:41:38,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:41:38,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:41:38,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:41:38,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:41:38,521 INFO L87 Difference]: Start difference. First operand 23420 states and 30997 transitions. Second operand 7 states. [2020-10-13 09:42:08,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:42:08,740 INFO L93 Difference]: Finished difference Result 48893 states and 71929 transitions. [2020-10-13 09:42:08,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:42:08,744 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 248 [2020-10-13 09:42:08,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:42:08,885 INFO L225 Difference]: With dead ends: 48893 [2020-10-13 09:42:08,886 INFO L226 Difference]: Without dead ends: 25912 [2020-10-13 09:42:08,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:42:08,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25912 states. [2020-10-13 09:42:09,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25912 to 25434. [2020-10-13 09:42:09,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25434 states. [2020-10-13 09:42:09,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25434 states to 25434 states and 34272 transitions. [2020-10-13 09:42:09,645 INFO L78 Accepts]: Start accepts. Automaton has 25434 states and 34272 transitions. Word has length 248 [2020-10-13 09:42:09,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:42:09,646 INFO L479 AbstractCegarLoop]: Abstraction has 25434 states and 34272 transitions. [2020-10-13 09:42:09,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:42:09,646 INFO L276 IsEmpty]: Start isEmpty. Operand 25434 states and 34272 transitions. [2020-10-13 09:42:09,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-10-13 09:42:09,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:42:09,664 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:42:09,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:42:09,665 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:42:09,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:42:09,665 INFO L82 PathProgramCache]: Analyzing trace with hash -428007994, now seen corresponding path program 1 times [2020-10-13 09:42:09,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:42:09,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1175870072] [2020-10-13 09:42:09,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:42:09,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:42:09,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:10,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:11,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:12,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:14,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:42:14,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-13 09:42:14,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:42:14,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4701 [2020-10-13 09:42:14,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:42:14,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:42:14,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:42:14,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-13 09:42:14,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:42:14,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:42:14,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:42:14,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:14,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:42:14,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:42:14,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:42:14,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 09:42:14,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:42:14,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:42:14,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:42:14,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:42:14,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:42:14,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:42:14,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:42:14,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:14,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:42:14,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:42:14,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:42:14,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-13 09:42:14,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:42:14,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:42:14,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:42:14,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-13 09:42:14,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:42:14,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-13 09:42:14,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:42:15,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:15,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:42:15,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-13 09:42:15,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:42:15,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-13 09:42:15,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:42:15,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:42:15,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-13 09:42:15,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:42:15,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:42:15,525 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 18 proven. 110 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 09:42:15,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1175870072] [2020-10-13 09:42:15,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:42:15,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:42:15,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297847323] [2020-10-13 09:42:15,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:42:15,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:42:15,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:42:15,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:42:15,530 INFO L87 Difference]: Start difference. First operand 25434 states and 34272 transitions. Second operand 7 states. [2020-10-13 09:42:34,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:42:34,256 INFO L93 Difference]: Finished difference Result 52232 states and 72483 transitions. [2020-10-13 09:42:34,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:42:34,260 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 290 [2020-10-13 09:42:34,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:42:34,318 INFO L225 Difference]: With dead ends: 52232 [2020-10-13 09:42:34,319 INFO L226 Difference]: Without dead ends: 18770 [2020-10-13 09:42:34,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:42:34,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18770 states. [2020-10-13 09:42:34,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18770 to 18329. [2020-10-13 09:42:34,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18329 states. [2020-10-13 09:42:34,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18329 states to 18329 states and 22322 transitions. [2020-10-13 09:42:34,726 INFO L78 Accepts]: Start accepts. Automaton has 18329 states and 22322 transitions. Word has length 290 [2020-10-13 09:42:34,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:42:34,727 INFO L479 AbstractCegarLoop]: Abstraction has 18329 states and 22322 transitions. [2020-10-13 09:42:34,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:42:34,727 INFO L276 IsEmpty]: Start isEmpty. Operand 18329 states and 22322 transitions. [2020-10-13 09:42:34,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2020-10-13 09:42:34,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:42:34,739 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:42:34,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:42:34,740 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:42:34,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:42:34,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1334847574, now seen corresponding path program 1 times [2020-10-13 09:42:34,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:42:34,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [896511170] [2020-10-13 09:42:34,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:42:34,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:42:34,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:35,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:36,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking...