/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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_label49.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 22:35:51,643 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 22:35:51,646 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 22:35:51,681 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 22:35:51,682 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 22:35:51,691 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 22:35:51,692 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 22:35:51,696 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 22:35:51,698 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 22:35:51,701 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 22:35:51,702 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 22:35:51,706 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 22:35:51,706 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 22:35:51,709 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 22:35:51,713 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 22:35:51,716 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 22:35:51,717 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 22:35:51,719 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 22:35:51,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 22:35:51,730 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 22:35:51,732 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 22:35:51,734 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 22:35:51,735 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 22:35:51,736 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 22:35:51,748 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 22:35:51,749 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 22:35:51,749 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 22:35:51,751 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 22:35:51,752 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 22:35:51,753 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 22:35:51,754 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 22:35:51,754 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 22:35:51,755 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 22:35:51,756 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 22:35:51,757 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 22:35:51,758 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 22:35:51,758 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 22:35:51,759 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 22:35:51,759 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 22:35:51,760 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 22:35:51,761 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 22:35:51,762 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 [2020-10-14 22:35:51,814 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 22:35:51,814 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 22:35:51,817 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 22:35:51,817 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 22:35:51,817 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 22:35:51,818 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 22:35:51,818 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 22:35:51,818 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 22:35:51,818 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 22:35:51,818 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 22:35:51,820 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 22:35:51,820 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 22:35:51,820 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 22:35:51,821 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 22:35:51,821 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 22:35:51,821 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 22:35:51,821 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 22:35:51,821 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 22:35:51,822 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 22:35:51,822 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 22:35:51,822 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 22:35:51,822 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:35:51,822 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 22:35:51,823 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 22:35:51,823 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 22:35:51,823 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 22:35:51,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 22:35:51,823 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 22:35:51,824 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 22:35:51,824 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 22:35:52,151 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 22:35:52,163 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 22:35:52,168 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 22:35:52,169 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 22:35:52,170 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 22:35:52,171 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label49.c [2020-10-14 22:35:52,273 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/addb6c5bd/26422fa2a9e041de9cd9d989c9cb4d2e/FLAG28eb5221a [2020-10-14 22:35:53,135 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 22:35:53,136 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label49.c [2020-10-14 22:35:53,164 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/addb6c5bd/26422fa2a9e041de9cd9d989c9cb4d2e/FLAG28eb5221a [2020-10-14 22:35:53,689 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/addb6c5bd/26422fa2a9e041de9cd9d989c9cb4d2e [2020-10-14 22:35:53,699 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 22:35:53,701 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 22:35:53,702 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 22:35:53,702 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 22:35:53,706 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 22:35:53,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:35:53" (1/1) ... [2020-10-14 22:35:53,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58be2b7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:35:53, skipping insertion in model container [2020-10-14 22:35:53,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:35:53" (1/1) ... [2020-10-14 22:35:53,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 22:35:53,857 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 22:35:55,201 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:35:55,210 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 22:35:55,657 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:35:55,686 INFO L208 MainTranslator]: Completed translation [2020-10-14 22:35:55,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:35:55 WrapperNode [2020-10-14 22:35:55,688 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 22:35:55,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 22:35:55,689 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 22:35:55,689 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 22:35:55,708 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:35:55" (1/1) ... [2020-10-14 22:35:55,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:35:55" (1/1) ... [2020-10-14 22:35:55,777 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:35:55" (1/1) ... [2020-10-14 22:35:55,777 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:35:55" (1/1) ... [2020-10-14 22:35:55,880 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:35:55" (1/1) ... [2020-10-14 22:35:55,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:35:55" (1/1) ... [2020-10-14 22:35:55,936 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:35:55" (1/1) ... [2020-10-14 22:35:55,972 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 22:35:55,973 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 22:35:55,974 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 22:35:55,974 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 22:35:55,975 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:35:55" (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 [2020-10-14 22:35:56,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 22:35:56,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 22:35:56,111 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 22:35:56,111 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 22:35:56,111 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 22:35:56,112 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 22:35:56,112 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 22:35:56,113 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 22:35:56,113 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 22:35:56,113 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 22:35:56,114 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 22:35:56,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 22:35:56,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 22:36:02,708 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 22:36:02,709 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 22:36:02,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:36:02 BoogieIcfgContainer [2020-10-14 22:36:02,719 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 22:36:02,720 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 22:36:02,721 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 22:36:02,724 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 22:36:02,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:35:53" (1/3) ... [2020-10-14 22:36:02,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@498dc409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:36:02, skipping insertion in model container [2020-10-14 22:36:02,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:35:55" (2/3) ... [2020-10-14 22:36:02,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@498dc409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:36:02, skipping insertion in model container [2020-10-14 22:36:02,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:36:02" (3/3) ... [2020-10-14 22:36:02,728 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label49.c [2020-10-14 22:36:02,739 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 22:36:02,748 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 22:36:02,763 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 22:36:02,791 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 22:36:02,791 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 22:36:02,791 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 22:36:02,791 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 22:36:02,791 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 22:36:02,791 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 22:36:02,791 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 22:36:02,792 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 22:36:02,822 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-14 22:36:02,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 22:36:02,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:36:02,831 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:36:02,832 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:36:02,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:36:02,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1643264031, now seen corresponding path program 1 times [2020-10-14 22:36:02,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:36:02,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1320787481] [2020-10-14 22:36:02,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:36:02,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:03,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:03,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:03,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 22:36:03,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:03,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-10-14 22:36:03,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:03,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:03,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:36:03,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:36:03,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 22:36:03,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:36:03,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:36:03,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:03,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:03,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:03,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:36:03,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:03,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 22:36:03,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:03,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:03,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:36:03,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:36:03,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:36:03,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:36:03,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:36:03,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1320787481] [2020-10-14 22:36:03,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:36:03,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 22:36:03,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661527584] [2020-10-14 22:36:03,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 22:36:03,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:36:03,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 22:36:03,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 22:36:03,439 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-14 22:36:14,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:36:14,889 INFO L93 Difference]: Finished difference Result 1689 states and 3086 transitions. [2020-10-14 22:36:14,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:36:14,891 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-14 22:36:14,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:36:14,923 INFO L225 Difference]: With dead ends: 1689 [2020-10-14 22:36:14,924 INFO L226 Difference]: Without dead ends: 1009 [2020-10-14 22:36:14,940 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:36:14,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2020-10-14 22:36:15,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 991. [2020-10-14 22:36:15,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 991 states. [2020-10-14 22:36:15,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1526 transitions. [2020-10-14 22:36:15,097 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1526 transitions. Word has length 21 [2020-10-14 22:36:15,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:36:15,099 INFO L479 AbstractCegarLoop]: Abstraction has 991 states and 1526 transitions. [2020-10-14 22:36:15,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 22:36:15,099 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1526 transitions. [2020-10-14 22:36:15,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-14 22:36:15,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:36:15,109 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 22:36:15,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 22:36:15,110 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:36:15,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:36:15,112 INFO L82 PathProgramCache]: Analyzing trace with hash -575527753, now seen corresponding path program 1 times [2020-10-14 22:36:15,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:36:15,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1325357934] [2020-10-14 22:36:15,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:36:15,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:15,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:15,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:16,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:16,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 22:36:16,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:36:16,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1122 [2020-10-14 22:36:16,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:16,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:16,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:36:16,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:36:16,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 22:36:16,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:36:16,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:36:16,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:16,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:16,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:16,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:36:16,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:16,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 22:36:16,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:16,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:16,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:36:16,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:36:16,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:36:16,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 22:36:16,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:36:16,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:16,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:16,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:16,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:36:16,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:16,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-14 22:36:16,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:16,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:16,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:36:16,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:36:16,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 22:36:16,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:36:16,751 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:36:16,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1325357934] [2020-10-14 22:36:16,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:36:16,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 22:36:16,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446946420] [2020-10-14 22:36:16,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:36:16,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:36:16,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:36:16,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:36:16,756 INFO L87 Difference]: Start difference. First operand 991 states and 1526 transitions. Second operand 7 states. [2020-10-14 22:36:29,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:36:29,435 INFO L93 Difference]: Finished difference Result 2445 states and 3893 transitions. [2020-10-14 22:36:29,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:36:29,436 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 92 [2020-10-14 22:36:29,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:36:29,445 INFO L225 Difference]: With dead ends: 2445 [2020-10-14 22:36:29,445 INFO L226 Difference]: Without dead ends: 1460 [2020-10-14 22:36:29,449 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:36:29,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2020-10-14 22:36:29,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 1432. [2020-10-14 22:36:29,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1432 states. [2020-10-14 22:36:29,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 1858 transitions. [2020-10-14 22:36:29,499 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 1858 transitions. Word has length 92 [2020-10-14 22:36:29,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:36:29,500 INFO L479 AbstractCegarLoop]: Abstraction has 1432 states and 1858 transitions. [2020-10-14 22:36:29,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:36:29,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 1858 transitions. [2020-10-14 22:36:29,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-14 22:36:29,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:36:29,503 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 22:36:29,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 22:36:29,504 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:36:29,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:36:29,504 INFO L82 PathProgramCache]: Analyzing trace with hash -853153015, now seen corresponding path program 1 times [2020-10-14 22:36:29,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:36:29,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [210166206] [2020-10-14 22:36:29,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:36:29,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:29,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:30,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:30,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-14 22:36:30,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:30,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 589 [2020-10-14 22:36:30,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:30,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:30,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:36:30,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:36:30,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 22:36:30,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:36:30,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:36:30,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:30,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:30,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:30,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:36:30,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:30,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 22:36:30,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:30,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:30,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:36:30,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:36:30,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:36:30,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:36:30,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:36:30,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:30,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:30,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:30,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 22:36:30,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:30,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 333 [2020-10-14 22:36:30,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:30,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:30,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:36:30,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:36:30,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 22:36:30,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:36:30,839 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:36:30,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [210166206] [2020-10-14 22:36:30,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:36:30,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:36:30,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502702669] [2020-10-14 22:36:30,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:36:30,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:36:30,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:36:30,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:36:30,843 INFO L87 Difference]: Start difference. First operand 1432 states and 1858 transitions. Second operand 8 states. [2020-10-14 22:36:49,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:36:49,016 INFO L93 Difference]: Finished difference Result 3392 states and 4638 transitions. [2020-10-14 22:36:49,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:36:49,017 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 95 [2020-10-14 22:36:49,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:36:49,027 INFO L225 Difference]: With dead ends: 3392 [2020-10-14 22:36:49,028 INFO L226 Difference]: Without dead ends: 1941 [2020-10-14 22:36:49,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:36:49,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1941 states. [2020-10-14 22:36:49,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1941 to 1915. [2020-10-14 22:36:49,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1915 states. [2020-10-14 22:36:49,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1915 states to 1915 states and 2395 transitions. [2020-10-14 22:36:49,081 INFO L78 Accepts]: Start accepts. Automaton has 1915 states and 2395 transitions. Word has length 95 [2020-10-14 22:36:49,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:36:49,082 INFO L479 AbstractCegarLoop]: Abstraction has 1915 states and 2395 transitions. [2020-10-14 22:36:49,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:36:49,082 INFO L276 IsEmpty]: Start isEmpty. Operand 1915 states and 2395 transitions. [2020-10-14 22:36:49,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-14 22:36:49,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:36:49,086 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 22:36:49,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 22:36:49,087 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:36:49,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:36:49,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1772486461, now seen corresponding path program 1 times [2020-10-14 22:36:49,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:36:49,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338988121] [2020-10-14 22:36:49,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:36:49,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:49,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:49,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:50,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:50,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-14 22:36:50,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:36:50,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1142 [2020-10-14 22:36:50,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:50,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:50,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:36:50,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:36:50,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 22:36:50,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 22:36:50,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:36:50,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:50,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:50,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:50,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:36:50,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:50,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:36:50,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:50,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:50,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:36:50,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:36:50,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:36:50,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:36:50,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:36:50,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:50,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:50,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:50,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:36:50,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:50,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-14 22:36:50,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:50,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:50,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:36:50,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:36:50,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:36:50,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:36:50,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:36:50,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:50,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:50,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:50,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 22:36:50,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:50,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-14 22:36:50,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:50,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:50,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:36:50,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:36:50,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 22:36:50,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:36:50,879 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 94 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:36:50,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1338988121] [2020-10-14 22:36:50,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:36:50,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:36:50,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508146203] [2020-10-14 22:36:50,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:36:50,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:36:50,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:36:50,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:36:50,886 INFO L87 Difference]: Start difference. First operand 1915 states and 2395 transitions. Second operand 7 states. [2020-10-14 22:37:02,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:37:02,612 INFO L93 Difference]: Finished difference Result 4340 states and 5768 transitions. [2020-10-14 22:37:02,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:37:02,613 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 177 [2020-10-14 22:37:02,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:37:02,629 INFO L225 Difference]: With dead ends: 4340 [2020-10-14 22:37:02,630 INFO L226 Difference]: Without dead ends: 2869 [2020-10-14 22:37:02,634 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:37:02,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2869 states. [2020-10-14 22:37:02,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2869 to 2842. [2020-10-14 22:37:02,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2842 states. [2020-10-14 22:37:02,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2842 states to 2842 states and 3559 transitions. [2020-10-14 22:37:02,714 INFO L78 Accepts]: Start accepts. Automaton has 2842 states and 3559 transitions. Word has length 177 [2020-10-14 22:37:02,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:37:02,715 INFO L479 AbstractCegarLoop]: Abstraction has 2842 states and 3559 transitions. [2020-10-14 22:37:02,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:37:02,716 INFO L276 IsEmpty]: Start isEmpty. Operand 2842 states and 3559 transitions. [2020-10-14 22:37:02,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-10-14 22:37:02,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:37:02,721 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 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] [2020-10-14 22:37:02,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 22:37:02,721 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:37:02,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:37:02,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1285493453, now seen corresponding path program 1 times [2020-10-14 22:37:02,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:37:02,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1530721112] [2020-10-14 22:37:02,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:37:02,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:37:02,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:03,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:03,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:07,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:37:07,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-10-14 22:37:07,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:37:07,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4288 [2020-10-14 22:37:07,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:37:07,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:37:07,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:37:07,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:37:07,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 22:37:07,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:37:07,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:37:07,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:37:07,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:07,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:37:07,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:37:07,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:37:07,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:37:07,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:37:07,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:37:07,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:37:07,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:37:07,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:37:07,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:37:07,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:37:07,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:37:07,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:07,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:37:07,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:37:07,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:37:07,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-14 22:37:07,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:37:07,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:37:07,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:37:07,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:37:07,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:37:07,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:37:07,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:37:07,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:37:07,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:07,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:37:07,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 22:37:07,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:37:07,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-14 22:37:07,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:37:07,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:37:07,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:37:07,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:37:07,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 22:37:07,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:37:07,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-14 22:37:07,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:37:07,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:07,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:37:07,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:37:07,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:37:07,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 22:37:07,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:37:07,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:37:07,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:37:07,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 22:37:07,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:37:07,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:37:07,891 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 130 proven. 70 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-14 22:37:07,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1530721112] [2020-10-14 22:37:07,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:37:07,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:37:07,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903944727] [2020-10-14 22:37:07,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:37:07,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:37:07,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:37:07,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:37:07,897 INFO L87 Difference]: Start difference. First operand 2842 states and 3559 transitions. Second operand 7 states. [2020-10-14 22:37:27,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:37:27,518 INFO L93 Difference]: Finished difference Result 7723 states and 10063 transitions. [2020-10-14 22:37:27,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:37:27,521 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 281 [2020-10-14 22:37:27,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:37:27,551 INFO L225 Difference]: With dead ends: 7723 [2020-10-14 22:37:27,551 INFO L226 Difference]: Without dead ends: 5325 [2020-10-14 22:37:27,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:37:27,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5325 states. [2020-10-14 22:37:27,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5325 to 5199. [2020-10-14 22:37:27,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5199 states. [2020-10-14 22:37:27,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5199 states to 5199 states and 6294 transitions. [2020-10-14 22:37:27,738 INFO L78 Accepts]: Start accepts. Automaton has 5199 states and 6294 transitions. Word has length 281 [2020-10-14 22:37:27,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:37:27,739 INFO L479 AbstractCegarLoop]: Abstraction has 5199 states and 6294 transitions. [2020-10-14 22:37:27,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:37:27,739 INFO L276 IsEmpty]: Start isEmpty. Operand 5199 states and 6294 transitions. [2020-10-14 22:37:27,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-10-14 22:37:27,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:37:27,746 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 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] [2020-10-14 22:37:27,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 22:37:27,747 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:37:27,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:37:27,747 INFO L82 PathProgramCache]: Analyzing trace with hash 2020792484, now seen corresponding path program 1 times [2020-10-14 22:37:27,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:37:27,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [172779415] [2020-10-14 22:37:27,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:37:27,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:37:27,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:28,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:29,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:30,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:32,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:37:32,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-14 22:37:32,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:37:32,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-14 22:37:32,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:37:32,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:37:32,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:37:32,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:37:32,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 22:37:32,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:37:33,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:37:33,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:37:33,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:33,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:37:33,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:37:33,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:37:33,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:37:33,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:37:33,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:37:33,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:37:33,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:37:33,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:37:33,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:37:33,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:37:33,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:37:33,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:33,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:37:33,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:37:33,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:37:33,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-14 22:37:33,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:37:33,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:37:33,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:37:33,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:37:33,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:37:33,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:37:33,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:37:33,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:37:33,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:33,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:37:33,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 22:37:33,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:37:33,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-10-14 22:37:33,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:37:33,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:37:33,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:37:33,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:37:33,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 22:37:33,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:37:33,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-14 22:37:33,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:37:33,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:33,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:37:33,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:37:33,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:37:33,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 22:37:33,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:37:33,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:37:33,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:37:33,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 22:37:33,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:37:33,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:37:34,174 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 130 proven. 70 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-14 22:37:34,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [172779415] [2020-10-14 22:37:34,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:37:34,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:37:34,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716244308] [2020-10-14 22:37:34,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:37:34,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:37:34,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:37:34,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:37:34,180 INFO L87 Difference]: Start difference. First operand 5199 states and 6294 transitions. Second operand 7 states. [2020-10-14 22:37:49,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:37:49,034 INFO L93 Difference]: Finished difference Result 11020 states and 13402 transitions. [2020-10-14 22:37:49,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:37:49,037 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 288 [2020-10-14 22:37:49,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:37:49,065 INFO L225 Difference]: With dead ends: 11020 [2020-10-14 22:37:49,065 INFO L226 Difference]: Without dead ends: 6265 [2020-10-14 22:37:49,079 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 22:37:49,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6265 states. [2020-10-14 22:37:49,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6265 to 6087. [2020-10-14 22:37:49,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6087 states. [2020-10-14 22:37:49,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6087 states to 6087 states and 7291 transitions. [2020-10-14 22:37:49,242 INFO L78 Accepts]: Start accepts. Automaton has 6087 states and 7291 transitions. Word has length 288 [2020-10-14 22:37:49,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:37:49,243 INFO L479 AbstractCegarLoop]: Abstraction has 6087 states and 7291 transitions. [2020-10-14 22:37:49,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:37:49,244 INFO L276 IsEmpty]: Start isEmpty. Operand 6087 states and 7291 transitions. [2020-10-14 22:37:49,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-14 22:37:49,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:37:49,251 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 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] [2020-10-14 22:37:49,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 22:37:49,252 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:37:49,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:37:49,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1003767164, now seen corresponding path program 1 times [2020-10-14 22:37:49,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:37:49,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [612502290] [2020-10-14 22:37:49,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:37:49,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:37:49,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:50,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:50,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:51,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:54,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:37:54,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-14 22:37:54,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:37:54,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 22:37:54,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:37:54,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:37:54,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:37:54,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:37:54,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-14 22:37:54,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:37:54,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:37:54,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:37:54,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:54,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:37:54,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:37:54,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:37:54,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:37:54,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:37:54,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:37:54,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:37:54,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:37:54,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:37:54,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:37:54,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:37:54,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:37:54,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:54,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:37:54,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:37:54,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:37:54,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-14 22:37:54,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:37:54,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:37:54,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:37:54,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:37:54,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:37:54,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:37:55,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:37:55,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:37:55,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:55,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:37:55,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 22:37:55,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:37:55,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-10-14 22:37:55,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:37:55,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:37:55,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:37:55,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:37:55,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-14 22:37:55,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:37:55,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-10-14 22:37:55,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:37:55,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:55,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:37:55,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:37:55,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:37:55,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 22:37:55,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:37:55,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:37:55,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:37:55,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 22:37:55,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:37:55,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:37:56,338 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 47 proven. 225 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 22:37:56,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [612502290] [2020-10-14 22:37:56,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:37:56,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 22:37:56,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324803834] [2020-10-14 22:37:56,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 22:37:56,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:37:56,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 22:37:56,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:37:56,343 INFO L87 Difference]: Start difference. First operand 6087 states and 7291 transitions. Second operand 10 states. [2020-10-14 22:38:22,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:38:22,582 INFO L93 Difference]: Finished difference Result 12442 states and 15004 transitions. [2020-10-14 22:38:22,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 22:38:22,585 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 312 [2020-10-14 22:38:22,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:38:22,622 INFO L225 Difference]: With dead ends: 12442 [2020-10-14 22:38:22,623 INFO L226 Difference]: Without dead ends: 6799 [2020-10-14 22:38:22,640 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2020-10-14 22:38:22,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6799 states. [2020-10-14 22:38:22,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6799 to 6528. [2020-10-14 22:38:22,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6528 states. [2020-10-14 22:38:22,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6528 states to 6528 states and 7740 transitions. [2020-10-14 22:38:22,834 INFO L78 Accepts]: Start accepts. Automaton has 6528 states and 7740 transitions. Word has length 312 [2020-10-14 22:38:22,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:38:22,835 INFO L479 AbstractCegarLoop]: Abstraction has 6528 states and 7740 transitions. [2020-10-14 22:38:22,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 22:38:22,836 INFO L276 IsEmpty]: Start isEmpty. Operand 6528 states and 7740 transitions. [2020-10-14 22:38:22,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-10-14 22:38:22,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:38:22,847 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:38:22,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 22:38:22,848 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:38:22,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:38:22,849 INFO L82 PathProgramCache]: Analyzing trace with hash -163938032, now seen corresponding path program 1 times [2020-10-14 22:38:22,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:38:22,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [444809016] [2020-10-14 22:38:22,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:38:22,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:23,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:23,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:23,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-14 22:38:23,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:38:23,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 678 [2020-10-14 22:38:23,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:23,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:23,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:38:23,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 303 [2020-10-14 22:38:23,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 22:38:23,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:38:23,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:38:23,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:23,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:23,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:23,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:38:23,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:38:23,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:38:23,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:23,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:23,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:38:23,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:38:23,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:38:23,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:38:23,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:38:23,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:23,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:24,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:24,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 297 [2020-10-14 22:38:24,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:38:24,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 372 [2020-10-14 22:38:24,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:24,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:24,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:38:24,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:38:24,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 288 [2020-10-14 22:38:24,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:38:24,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:38:24,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:24,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:24,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:24,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 22:38:24,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:38:24,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 22:38:24,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:24,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:24,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:38:24,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:38:24,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 22:38:24,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:38:24,590 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:38:24,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [444809016] [2020-10-14 22:38:24,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:38:24,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:38:24,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423969523] [2020-10-14 22:38:24,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:38:24,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:38:24,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:38:24,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:38:24,593 INFO L87 Difference]: Start difference. First operand 6528 states and 7740 transitions. Second operand 5 states. [2020-10-14 22:38:45,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:38:45,418 INFO L93 Difference]: Finished difference Result 15303 states and 17999 transitions. [2020-10-14 22:38:45,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:38:45,423 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 315 [2020-10-14 22:38:45,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:38:45,456 INFO L225 Difference]: With dead ends: 15303 [2020-10-14 22:38:45,456 INFO L226 Difference]: Without dead ends: 8765 [2020-10-14 22:38:45,473 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:38:45,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8765 states. [2020-10-14 22:38:45,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8765 to 8725. [2020-10-14 22:38:45,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8725 states. [2020-10-14 22:38:45,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8725 states to 8725 states and 10175 transitions. [2020-10-14 22:38:45,659 INFO L78 Accepts]: Start accepts. Automaton has 8725 states and 10175 transitions. Word has length 315 [2020-10-14 22:38:45,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:38:45,660 INFO L479 AbstractCegarLoop]: Abstraction has 8725 states and 10175 transitions. [2020-10-14 22:38:45,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:38:45,660 INFO L276 IsEmpty]: Start isEmpty. Operand 8725 states and 10175 transitions. [2020-10-14 22:38:45,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2020-10-14 22:38:45,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:38:45,669 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 22:38:45,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 22:38:45,670 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:38:45,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:38:45,671 INFO L82 PathProgramCache]: Analyzing trace with hash 63476140, now seen corresponding path program 1 times [2020-10-14 22:38:45,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:38:45,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1450094185] [2020-10-14 22:38:45,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:38:45,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:45,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:46,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:46,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:50,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:50,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 383 [2020-10-14 22:38:50,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:38:50,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-14 22:38:50,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:50,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:50,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:38:50,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-14 22:38:50,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 22:38:50,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:38:50,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:38:50,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:50,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:50,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:50,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:38:50,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:38:50,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:38:50,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:50,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:50,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:38:50,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:38:50,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:38:50,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:38:50,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:38:50,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:50,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:51,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:51,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:38:51,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:38:51,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 22:38:51,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:51,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:51,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:38:51,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:38:51,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:38:51,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:38:51,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:38:51,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:51,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:51,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:51,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:38:51,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:38:51,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 22:38:51,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:51,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:51,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:38:51,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:38:51,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 22:38:51,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:38:51,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 22:38:51,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:51,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:51,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:51,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 22:38:51,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:38:51,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-14 22:38:51,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:51,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:51,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:38:51,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:38:51,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 22:38:51,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:38:51,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2020-10-14 22:38:51,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:38:51,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:38:51,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:38:51,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:38:51,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:38:51,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 22:38:51,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:38:51,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:38:51,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:38:51,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 22:38:51,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:38:51,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:38:51,508 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 236 proven. 70 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-10-14 22:38:51,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1450094185] [2020-10-14 22:38:51,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:38:51,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:38:51,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762684219] [2020-10-14 22:38:51,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:38:51,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:38:51,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:38:51,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:38:51,520 INFO L87 Difference]: Start difference. First operand 8725 states and 10175 transitions. Second operand 7 states. [2020-10-14 22:39:16,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:39:16,544 INFO L93 Difference]: Finished difference Result 19936 states and 24121 transitions. [2020-10-14 22:39:16,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:39:16,548 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 367 [2020-10-14 22:39:16,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:39:16,587 INFO L225 Difference]: With dead ends: 19936 [2020-10-14 22:39:16,587 INFO L226 Difference]: Without dead ends: 12092 [2020-10-14 22:39:16,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:39:16,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12092 states. [2020-10-14 22:39:16,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12092 to 11520. [2020-10-14 22:39:16,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11520 states. [2020-10-14 22:39:16,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11520 states to 11520 states and 13909 transitions. [2020-10-14 22:39:16,842 INFO L78 Accepts]: Start accepts. Automaton has 11520 states and 13909 transitions. Word has length 367 [2020-10-14 22:39:16,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:39:16,843 INFO L479 AbstractCegarLoop]: Abstraction has 11520 states and 13909 transitions. [2020-10-14 22:39:16,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:39:16,843 INFO L276 IsEmpty]: Start isEmpty. Operand 11520 states and 13909 transitions. [2020-10-14 22:39:16,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2020-10-14 22:39:16,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:39:16,858 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 22:39:16,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 22:39:16,859 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:39:16,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:39:16,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1873221109, now seen corresponding path program 1 times [2020-10-14 22:39:16,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:39:16,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [767633058] [2020-10-14 22:39:16,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:39:16,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:17,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:17,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:17,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:17,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:21,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:21,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:21,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 390 [2020-10-14 22:39:21,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:39:21,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 22:39:21,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:21,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:21,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 22:39:21,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:39:21,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 292 [2020-10-14 22:39:21,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:39:22,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:39:22,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:22,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:22,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:22,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:39:22,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:39:22,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:39:22,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:22,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:22,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:39:22,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:39:22,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:39:22,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:39:22,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:39:22,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:22,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:22,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:22,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:39:22,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:39:22,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-14 22:39:22,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:22,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:22,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:39:22,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:39:22,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:39:22,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:39:22,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:39:22,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:22,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:22,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:22,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:39:22,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:39:22,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-14 22:39:22,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:22,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:22,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:39:22,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:39:22,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 22:39:22,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:39:22,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 22:39:22,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:22,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:22,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:22,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 22:39:22,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:39:22,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-14 22:39:22,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:22,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:22,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:39:22,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:39:22,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 22:39:22,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:39:23,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2020-10-14 22:39:23,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:23,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:23,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:23,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:39:23,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:39:23,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 22:39:23,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:23,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:23,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:39:23,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 22:39:23,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:39:23,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:39:23,254 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 151 proven. 363 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-14 22:39:23,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [767633058] [2020-10-14 22:39:23,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:39:23,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 22:39:23,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750270485] [2020-10-14 22:39:23,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 22:39:23,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:39:23,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 22:39:23,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:39:23,257 INFO L87 Difference]: Start difference. First operand 11520 states and 13909 transitions. Second operand 11 states.