/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/Problem04_label34.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 19:27:00,721 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 19:27:00,723 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 19:27:00,748 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 19:27:00,748 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 19:27:00,749 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 19:27:00,750 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 19:27:00,752 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 19:27:00,754 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 19:27:00,755 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 19:27:00,755 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 19:27:00,756 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 19:27:00,757 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 19:27:00,758 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 19:27:00,759 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 19:27:00,760 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 19:27:00,761 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 19:27:00,761 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 19:27:00,763 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 19:27:00,765 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 19:27:00,766 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 19:27:00,767 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 19:27:00,768 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 19:27:00,769 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 19:27:00,771 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 19:27:00,772 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 19:27:00,772 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 19:27:00,773 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 19:27:00,773 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 19:27:00,774 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 19:27:00,774 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 19:27:00,775 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 19:27:00,776 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 19:27:00,776 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 19:27:00,777 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 19:27:00,777 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 19:27:00,778 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 19:27:00,778 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 19:27:00,779 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 19:27:00,779 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 19:27:00,780 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 19:27:00,781 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 19:27:00,827 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 19:27:00,827 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 19:27:00,828 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 19:27:00,829 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 19:27:00,829 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 19:27:00,829 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 19:27:00,829 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 19:27:00,830 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 19:27:00,830 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 19:27:00,830 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 19:27:00,830 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 19:27:00,830 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 19:27:00,830 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 19:27:00,831 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 19:27:00,831 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 19:27:00,834 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 19:27:00,834 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 19:27:00,835 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 19:27:00,835 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 19:27:00,837 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 19:27:00,837 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 19:27:00,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 19:27:00,838 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 19:27:00,838 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 19:27:00,838 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 19:27:00,838 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 19:27:00,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 19:27:00,839 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 19:27:00,839 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 19:27:00,839 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 19:27:01,169 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 19:27:01,182 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 19:27:01,186 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 19:27:01,188 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 19:27:01,188 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 19:27:01,189 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label34.c [2020-10-14 19:27:01,255 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5225531ba/d0418f01d9f5492383eeda397aad6630/FLAGbe7d3b4bd [2020-10-14 19:27:02,043 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 19:27:02,044 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label34.c [2020-10-14 19:27:02,079 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5225531ba/d0418f01d9f5492383eeda397aad6630/FLAGbe7d3b4bd [2020-10-14 19:27:02,570 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5225531ba/d0418f01d9f5492383eeda397aad6630 [2020-10-14 19:27:02,581 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 19:27:02,583 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 19:27:02,584 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 19:27:02,584 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 19:27:02,588 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 19:27:02,589 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:27:02" (1/1) ... [2020-10-14 19:27:02,593 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@538d8bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:27:02, skipping insertion in model container [2020-10-14 19:27:02,593 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:27:02" (1/1) ... [2020-10-14 19:27:02,602 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 19:27:02,768 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 19:27:04,237 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:27:04,244 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 19:27:04,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:27:04,892 INFO L208 MainTranslator]: Completed translation [2020-10-14 19:27:04,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:27:04 WrapperNode [2020-10-14 19:27:04,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 19:27:04,894 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 19:27:04,894 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 19:27:04,894 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 19:27:04,909 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:27:04" (1/1) ... [2020-10-14 19:27:04,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:27:04" (1/1) ... [2020-10-14 19:27:04,955 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:27:04" (1/1) ... [2020-10-14 19:27:04,956 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:27:04" (1/1) ... [2020-10-14 19:27:05,050 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:27:04" (1/1) ... [2020-10-14 19:27:05,084 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:27:04" (1/1) ... [2020-10-14 19:27:05,108 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:27:04" (1/1) ... [2020-10-14 19:27:05,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 19:27:05,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 19:27:05,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 19:27:05,138 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 19:27:05,139 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:27:04" (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 19:27:05,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 19:27:05,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 19:27:05,215 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 19:27:05,215 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 19:27:05,216 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 19:27:05,216 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 19:27:05,217 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 19:27:05,217 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 19:27:05,218 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 19:27:05,218 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 19:27:05,218 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 19:27:05,218 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 19:27:05,218 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 19:27:05,218 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 19:27:05,219 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 19:27:05,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 19:27:05,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 19:27:09,969 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 19:27:09,969 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 19:27:09,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:27:09 BoogieIcfgContainer [2020-10-14 19:27:09,983 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 19:27:09,984 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 19:27:09,984 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 19:27:09,987 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 19:27:09,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:27:02" (1/3) ... [2020-10-14 19:27:09,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c2f272 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:27:09, skipping insertion in model container [2020-10-14 19:27:09,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:27:04" (2/3) ... [2020-10-14 19:27:09,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c2f272 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:27:09, skipping insertion in model container [2020-10-14 19:27:09,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:27:09" (3/3) ... [2020-10-14 19:27:09,991 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label34.c [2020-10-14 19:27:10,002 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 19:27:10,011 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 19:27:10,026 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 19:27:10,058 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 19:27:10,058 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 19:27:10,059 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 19:27:10,059 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 19:27:10,059 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 19:27:10,059 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 19:27:10,059 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 19:27:10,059 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 19:27:10,095 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2020-10-14 19:27:10,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 801 [2020-10-14 19:27:10,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:27:10,139 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:27:10,139 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:27:10,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:27:10,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1010735603, now seen corresponding path program 1 times [2020-10-14 19:27:10,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:27:10,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440134239] [2020-10-14 19:27:10,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:27:10,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:27:11,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:14,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:15,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:27:15,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 814 [2020-10-14 19:27:15,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:27:15,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 19:27:15,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:27:15,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:27:15,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 19:27:15,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:27:15,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 808 [2020-10-14 19:27:15,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 19:27:16,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:27:16,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:27:16,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:16,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:27:16,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:27:16,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:27:16,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 19:27:16,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:27:16,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:27:16,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:27:16,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:27:16,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:27:16,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:27:17,492 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 19:27:17,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440134239] [2020-10-14 19:27:17,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 19:27:17,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 19:27:17,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25773481] [2020-10-14 19:27:17,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 19:27:17,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:27:17,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 19:27:17,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 19:27:17,522 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 4 states. [2020-10-14 19:27:27,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:27:27,241 INFO L93 Difference]: Finished difference Result 2672 states and 5134 transitions. [2020-10-14 19:27:27,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:27:27,249 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 800 [2020-10-14 19:27:27,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:27:27,286 INFO L225 Difference]: With dead ends: 2672 [2020-10-14 19:27:27,286 INFO L226 Difference]: Without dead ends: 1702 [2020-10-14 19:27:27,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:27:27,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2020-10-14 19:27:27,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1698. [2020-10-14 19:27:27,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1698 states. [2020-10-14 19:27:27,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1698 states to 1698 states and 2780 transitions. [2020-10-14 19:27:27,504 INFO L78 Accepts]: Start accepts. Automaton has 1698 states and 2780 transitions. Word has length 800 [2020-10-14 19:27:27,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:27:27,507 INFO L479 AbstractCegarLoop]: Abstraction has 1698 states and 2780 transitions. [2020-10-14 19:27:27,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 19:27:27,508 INFO L276 IsEmpty]: Start isEmpty. Operand 1698 states and 2780 transitions. [2020-10-14 19:27:27,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 812 [2020-10-14 19:27:27,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:27:27,538 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:27:27,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 19:27:27,539 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:27:27,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:27:27,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1734622956, now seen corresponding path program 1 times [2020-10-14 19:27:27,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:27:27,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592181827] [2020-10-14 19:27:27,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:27:27,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:27:27,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:28,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:30,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:32,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:27:32,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 827 [2020-10-14 19:27:32,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:27:32,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5080 [2020-10-14 19:27:32,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:27:32,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:27:32,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:27:32,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 19:27:32,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 805 [2020-10-14 19:27:32,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:27:33,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:27:33,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:27:33,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:33,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:27:33,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:27:33,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:27:33,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:27:33,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:27:33,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:27:33,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:27:33,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:27:33,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:27:33,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:27:33,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:27:33,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:27:33,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:33,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:27:33,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 19:27:33,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:27:33,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 19:27:33,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:27:33,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:27:33,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:27:33,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:27:33,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 19:27:33,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:27:34,324 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:27:34,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [592181827] [2020-10-14 19:27:34,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:27:34,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:27:34,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343349482] [2020-10-14 19:27:34,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:27:34,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:27:34,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:27:34,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:27:34,332 INFO L87 Difference]: Start difference. First operand 1698 states and 2780 transitions. Second operand 5 states. [2020-10-14 19:27:44,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:27:44,900 INFO L93 Difference]: Finished difference Result 4241 states and 7192 transitions. [2020-10-14 19:27:44,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:27:44,901 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 811 [2020-10-14 19:27:44,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:27:44,917 INFO L225 Difference]: With dead ends: 4241 [2020-10-14 19:27:44,917 INFO L226 Difference]: Without dead ends: 2549 [2020-10-14 19:27:44,922 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 19:27:44,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2549 states. [2020-10-14 19:27:44,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2549 to 2543. [2020-10-14 19:27:44,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2543 states. [2020-10-14 19:27:44,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2543 states to 2543 states and 3945 transitions. [2020-10-14 19:27:44,988 INFO L78 Accepts]: Start accepts. Automaton has 2543 states and 3945 transitions. Word has length 811 [2020-10-14 19:27:44,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:27:44,990 INFO L479 AbstractCegarLoop]: Abstraction has 2543 states and 3945 transitions. [2020-10-14 19:27:44,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:27:44,991 INFO L276 IsEmpty]: Start isEmpty. Operand 2543 states and 3945 transitions. [2020-10-14 19:27:45,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 820 [2020-10-14 19:27:45,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:27:45,021 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:27:45,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 19:27:45,022 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:27:45,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:27:45,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1184641532, now seen corresponding path program 1 times [2020-10-14 19:27:45,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:27:45,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [346705469] [2020-10-14 19:27:45,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:27:45,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:27:45,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:46,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:47,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:50,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:27:50,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 835 [2020-10-14 19:27:50,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:27:50,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-14 19:27:50,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:27:50,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:27:50,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:27:50,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 19:27:50,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 805 [2020-10-14 19:27:50,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:27:50,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:27:50,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:27:50,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:50,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:27:50,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:27:50,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:27:50,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:27:50,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:27:50,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:27:50,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:27:50,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:27:50,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:27:50,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:27:50,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:27:50,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:27:50,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:50,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:27:50,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 19:27:50,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:27:50,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 19:27:50,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:27:50,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:27:50,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:27:50,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:27:50,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 19:27:50,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:27:52,099 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:27:52,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [346705469] [2020-10-14 19:27:52,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:27:52,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:27:52,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895076478] [2020-10-14 19:27:52,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:27:52,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:27:52,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:27:52,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:27:52,105 INFO L87 Difference]: Start difference. First operand 2543 states and 3945 transitions. Second operand 5 states. [2020-10-14 19:28:02,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:28:02,389 INFO L93 Difference]: Finished difference Result 7621 states and 11950 transitions. [2020-10-14 19:28:02,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:28:02,391 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 819 [2020-10-14 19:28:02,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:28:02,422 INFO L225 Difference]: With dead ends: 7621 [2020-10-14 19:28:02,423 INFO L226 Difference]: Without dead ends: 5084 [2020-10-14 19:28:02,430 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 19:28:02,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5084 states. [2020-10-14 19:28:02,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5084 to 5078. [2020-10-14 19:28:02,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5078 states. [2020-10-14 19:28:02,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5078 states to 5078 states and 7093 transitions. [2020-10-14 19:28:02,617 INFO L78 Accepts]: Start accepts. Automaton has 5078 states and 7093 transitions. Word has length 819 [2020-10-14 19:28:02,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:28:02,623 INFO L479 AbstractCegarLoop]: Abstraction has 5078 states and 7093 transitions. [2020-10-14 19:28:02,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:28:02,623 INFO L276 IsEmpty]: Start isEmpty. Operand 5078 states and 7093 transitions. [2020-10-14 19:28:02,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 863 [2020-10-14 19:28:02,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:28:02,653 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:28:02,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 19:28:02,654 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:28:02,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:28:02,654 INFO L82 PathProgramCache]: Analyzing trace with hash 218433026, now seen corresponding path program 1 times [2020-10-14 19:28:02,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:28:02,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [657669330] [2020-10-14 19:28:02,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:28:02,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:28:02,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:02,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:03,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:06,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:07,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:28:07,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 882 [2020-10-14 19:28:07,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:28:07,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-14 19:28:07,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:28:07,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:28:07,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:28:07,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:28:07,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 19:28:07,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:28:07,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:28:07,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:28:07,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:08,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:28:08,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:28:08,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:28:08,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 19:28:08,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:28:08,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:28:08,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:28:08,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:28:08,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:28:08,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:28:08,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:28:08,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:28:08,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:08,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:08,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:28:08,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 19:28:08,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:28:08,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 19:28:08,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:28:08,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:28:08,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:28:08,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:28:08,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 19:28:08,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:28:08,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 19:28:08,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:28:08,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:08,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:08,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:28:08,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 19:28:08,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:28:08,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 19:28:08,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:28:08,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:28:08,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:28:08,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:28:08,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 19:28:08,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:28:08,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 19:28:08,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:28:08,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:08,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:28:08,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 19:28:08,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:28:08,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 19:28:08,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:28:08,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:28:08,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:28:08,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:28:08,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 19:28:08,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:28:08,626 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 63 proven. 26 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-14 19:28:08,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [657669330] [2020-10-14 19:28:08,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:28:08,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 19:28:08,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481367588] [2020-10-14 19:28:08,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 19:28:08,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:28:08,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 19:28:08,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 19:28:08,631 INFO L87 Difference]: Start difference. First operand 5078 states and 7093 transitions. Second operand 9 states. [2020-10-14 19:28:21,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:28:21,709 INFO L93 Difference]: Finished difference Result 15365 states and 21885 transitions. [2020-10-14 19:28:21,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 19:28:21,710 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 862 [2020-10-14 19:28:21,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:28:21,758 INFO L225 Difference]: With dead ends: 15365 [2020-10-14 19:28:21,758 INFO L226 Difference]: Without dead ends: 10293 [2020-10-14 19:28:21,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-10-14 19:28:21,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10293 states. [2020-10-14 19:28:22,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10293 to 10265. [2020-10-14 19:28:22,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10265 states. [2020-10-14 19:28:22,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10265 states to 10265 states and 13344 transitions. [2020-10-14 19:28:22,059 INFO L78 Accepts]: Start accepts. Automaton has 10265 states and 13344 transitions. Word has length 862 [2020-10-14 19:28:22,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:28:22,060 INFO L479 AbstractCegarLoop]: Abstraction has 10265 states and 13344 transitions. [2020-10-14 19:28:22,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 19:28:22,060 INFO L276 IsEmpty]: Start isEmpty. Operand 10265 states and 13344 transitions. [2020-10-14 19:28:22,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 894 [2020-10-14 19:28:22,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:28:22,100 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:28:22,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 19:28:22,101 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:28:22,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:28:22,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1672807375, now seen corresponding path program 1 times [2020-10-14 19:28:22,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:28:22,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [406920042] [2020-10-14 19:28:22,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:28:22,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:28:22,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:22,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:22,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:27,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:28:27,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 911 [2020-10-14 19:28:27,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:28:27,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-14 19:28:27,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:28:27,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:28:27,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 19:28:27,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 19:28:27,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 593 [2020-10-14 19:28:27,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:28:29,492 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-10-14 19:28:29,734 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 54 [2020-10-14 19:28:30,067 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 54 [2020-10-14 19:28:30,438 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 54 [2020-10-14 19:28:30,791 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 50 [2020-10-14 19:28:31,127 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 46 [2020-10-14 19:28:31,447 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 42 [2020-10-14 19:28:31,650 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 33 [2020-10-14 19:28:31,953 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 35 [2020-10-14 19:28:32,108 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 35 [2020-10-14 19:28:32,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:28:32,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:28:32,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:32,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:28:32,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:28:32,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:28:32,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 19:28:32,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:28:32,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:28:32,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:28:32,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:28:32,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:28:32,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:28:32,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:28:32,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:28:32,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:32,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:28:32,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 19:28:32,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:28:32,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 19:28:32,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:28:32,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:28:32,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:28:32,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:28:32,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:28:32,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:28:32,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 19:28:32,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:28:32,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:32,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:28:32,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 19:28:32,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:28:32,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 19:28:32,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:28:32,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:28:32,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:28:32,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:28:32,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 19:28:32,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:28:37,567 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 88 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-14 19:28:37,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [406920042] [2020-10-14 19:28:37,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:28:37,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 19:28:37,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446134748] [2020-10-14 19:28:37,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 19:28:37,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:28:37,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 19:28:37,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-14 19:28:37,570 INFO L87 Difference]: Start difference. First operand 10265 states and 13344 transitions. Second operand 17 states. [2020-10-14 19:28:38,256 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-14 19:28:38,512 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-14 19:28:39,105 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 119 [2020-10-14 19:28:39,796 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 116 [2020-10-14 19:28:40,899 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 113 [2020-10-14 19:28:42,410 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 110 [2020-10-14 19:28:43,289 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 106 [2020-10-14 19:28:44,986 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-14 19:28:45,165 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-14 19:28:49,898 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-14 19:28:50,073 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-10-14 19:28:54,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:28:54,762 INFO L93 Difference]: Finished difference Result 21114 states and 27549 transitions. [2020-10-14 19:28:54,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 19:28:54,763 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 893 [2020-10-14 19:28:54,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:28:54,809 INFO L225 Difference]: With dead ends: 21114 [2020-10-14 19:28:54,809 INFO L226 Difference]: Without dead ends: 10855 [2020-10-14 19:28:54,833 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=171, Invalid=585, Unknown=0, NotChecked=0, Total=756 [2020-10-14 19:28:54,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10855 states. [2020-10-14 19:28:55,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10855 to 10851. [2020-10-14 19:28:55,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10851 states. [2020-10-14 19:28:55,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10851 states to 10851 states and 13942 transitions. [2020-10-14 19:28:55,072 INFO L78 Accepts]: Start accepts. Automaton has 10851 states and 13942 transitions. Word has length 893 [2020-10-14 19:28:55,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:28:55,073 INFO L479 AbstractCegarLoop]: Abstraction has 10851 states and 13942 transitions. [2020-10-14 19:28:55,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 19:28:55,073 INFO L276 IsEmpty]: Start isEmpty. Operand 10851 states and 13942 transitions. [2020-10-14 19:28:55,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 988 [2020-10-14 19:28:55,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:28:55,110 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, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:28:55,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 19:28:55,110 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:28:55,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:28:55,111 INFO L82 PathProgramCache]: Analyzing trace with hash 2010437329, now seen corresponding path program 1 times [2020-10-14 19:28:55,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:28:55,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1027740810] [2020-10-14 19:28:55,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:28:55,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:28:55,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:55,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:55,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:55,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:00,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:29:00,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1009 [2020-10-14 19:29:00,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:29:00,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-14 19:29:00,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:29:00,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:29:00,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:29:00,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 143 [2020-10-14 19:29:00,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 19:29:00,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:29:00,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:29:00,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:29:00,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:00,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:29:00,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:29:00,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:29:00,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:29:00,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:29:00,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:29:00,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:29:00,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:29:00,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:29:00,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:29:00,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:29:00,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:29:00,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:00,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:29:00,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 19:29:00,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:29:00,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:29:00,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:29:00,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:29:00,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:29:00,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:29:00,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:29:00,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:29:00,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 19:29:00,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:29:00,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:00,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:29:00,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 19:29:00,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:29:00,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 19:29:00,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:29:00,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:29:00,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:29:00,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:29:00,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:29:00,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:29:00,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 19:29:00,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:29:00,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:00,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:29:00,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 19:29:00,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:29:00,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 19:29:00,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:29:00,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:29:00,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:29:00,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:29:00,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 19:29:00,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:29:00,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-14 19:29:00,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:29:00,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:00,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:29:00,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 19:29:00,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:29:00,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 19:29:00,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:29:00,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:29:00,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:29:00,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:29:00,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 19:29:00,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:29:01,142 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 301 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-14 19:29:01,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1027740810] [2020-10-14 19:29:01,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:29:01,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:29:01,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656611373] [2020-10-14 19:29:01,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:29:01,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:29:01,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:29:01,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:29:01,146 INFO L87 Difference]: Start difference. First operand 10851 states and 13942 transitions. Second operand 7 states. [2020-10-14 19:29:20,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:29:20,779 INFO L93 Difference]: Finished difference Result 39709 states and 53218 transitions. [2020-10-14 19:29:20,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:29:20,780 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 987 [2020-10-14 19:29:20,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:29:20,887 INFO L225 Difference]: With dead ends: 39709 [2020-10-14 19:29:20,887 INFO L226 Difference]: Without dead ends: 27172 [2020-10-14 19:29:20,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:29:20,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27172 states. [2020-10-14 19:29:21,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27172 to 25482. [2020-10-14 19:29:21,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25482 states. [2020-10-14 19:29:21,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25482 states to 25482 states and 31447 transitions. [2020-10-14 19:29:21,465 INFO L78 Accepts]: Start accepts. Automaton has 25482 states and 31447 transitions. Word has length 987 [2020-10-14 19:29:21,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:29:21,466 INFO L479 AbstractCegarLoop]: Abstraction has 25482 states and 31447 transitions. [2020-10-14 19:29:21,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:29:21,466 INFO L276 IsEmpty]: Start isEmpty. Operand 25482 states and 31447 transitions. [2020-10-14 19:29:21,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1019 [2020-10-14 19:29:21,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:29:21,550 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:29:21,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 19:29:21,550 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:29:21,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:29:21,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1775644693, now seen corresponding path program 1 times [2020-10-14 19:29:21,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:29:21,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1286306478] [2020-10-14 19:29:21,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:29:21,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:29:21,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:22,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:24,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:26,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:29:26,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1036 [2020-10-14 19:29:26,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:29:26,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 19:29:26,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:29:26,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:29:26,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:29:26,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 230 [2020-10-14 19:29:26,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 805 [2020-10-14 19:29:26,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:29:27,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:29:27,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:29:27,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:27,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:29:27,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:29:27,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:29:27,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 19:29:27,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:29:27,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:29:27,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:29:27,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:29:27,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:29:27,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:29:27,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:29:27,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:29:27,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:27,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:29:27,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 19:29:27,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:29:27,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:29:27,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:29:27,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:29:27,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:29:27,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:29:27,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:29:27,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:29:27,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 19:29:27,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:29:27,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:27,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:29:27,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-14 19:29:27,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:29:27,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 19:29:27,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:29:27,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:29:27,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:29:27,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:29:27,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 194 [2020-10-14 19:29:27,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:29:28,031 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 213 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-14 19:29:28,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1286306478] [2020-10-14 19:29:28,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:29:28,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:29:28,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969955225] [2020-10-14 19:29:28,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:29:28,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:29:28,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:29:28,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:29:28,035 INFO L87 Difference]: Start difference. First operand 25482 states and 31447 transitions. Second operand 5 states. [2020-10-14 19:29:39,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:29:39,770 INFO L93 Difference]: Finished difference Result 73796 states and 93324 transitions. [2020-10-14 19:29:39,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:29:39,771 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1018 [2020-10-14 19:29:39,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:29:39,953 INFO L225 Difference]: With dead ends: 73796 [2020-10-14 19:29:39,953 INFO L226 Difference]: Without dead ends: 48320 [2020-10-14 19:29:40,039 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 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 19:29:40,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48320 states. [2020-10-14 19:29:40,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48320 to 46638. [2020-10-14 19:29:40,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46638 states. [2020-10-14 19:29:41,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46638 states to 46638 states and 58214 transitions. [2020-10-14 19:29:41,013 INFO L78 Accepts]: Start accepts. Automaton has 46638 states and 58214 transitions. Word has length 1018 [2020-10-14 19:29:41,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:29:41,014 INFO L479 AbstractCegarLoop]: Abstraction has 46638 states and 58214 transitions. [2020-10-14 19:29:41,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:29:41,014 INFO L276 IsEmpty]: Start isEmpty. Operand 46638 states and 58214 transitions. [2020-10-14 19:29:41,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1224 [2020-10-14 19:29:41,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:29:41,111 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:29:41,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 19:29:41,111 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:29:41,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:29:41,112 INFO L82 PathProgramCache]: Analyzing trace with hash -818456104, now seen corresponding path program 1 times [2020-10-14 19:29:41,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:29:41,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1837985773] [2020-10-14 19:29:41,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:29:41,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:29:41,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:41,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:41,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:41,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:45,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:46,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:29:46,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1247 [2020-10-14 19:29:46,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 19:29:46,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5087 [2020-10-14 19:29:46,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:29:46,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:29:46,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 19:29:46,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:29:46,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-14 19:29:46,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:29:46,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:29:46,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:29:46,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:46,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:29:46,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:29:46,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:29:46,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:29:46,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:29:46,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:29:46,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:29:46,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:29:46,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:29:46,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:29:46,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:29:46,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:29:46,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:46,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:46,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:29:46,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-14 19:29:46,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:29:46,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-14 19:29:46,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:29:46,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:29:46,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:29:46,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:29:46,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 19:29:46,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:29:46,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-14 19:29:46,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:29:46,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:47,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:29:47,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 19:29:47,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:29:47,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 19:29:47,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:29:47,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:29:47,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:29:47,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:29:47,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 19:29:47,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:29:47,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-10-14 19:29:47,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:29:47,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:47,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:29:47,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 19:29:47,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:29:47,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 19:29:47,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:29:47,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:29:47,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:29:47,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-14 19:29:47,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:29:47,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:29:47,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2020-10-14 19:29:47,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:29:47,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:47,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:29:47,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 19:29:47,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:29:47,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 19:29:47,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:29:47,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:29:47,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:29:47,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-10-14 19:29:47,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:29:47,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:29:47,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-10-14 19:29:47,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:29:47,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:47,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:29:47,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 19:29:47,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:29:47,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 19:29:47,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:29:47,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:29:47,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:29:47,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 19:29:47,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:29:47,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:29:47,724 INFO L134 CoverageAnalysis]: Checked inductivity of 967 backedges. 482 proven. 151 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2020-10-14 19:29:47,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1837985773] [2020-10-14 19:29:47,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:29:47,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:29:47,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568972253] [2020-10-14 19:29:47,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:29:47,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:29:47,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:29:47,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:29:47,727 INFO L87 Difference]: Start difference. First operand 46638 states and 58214 transitions. Second operand 7 states. [2020-10-14 19:30:01,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:30:01,211 INFO L93 Difference]: Finished difference Result 99769 states and 125939 transitions. [2020-10-14 19:30:01,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:30:01,212 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1223 [2020-10-14 19:30:01,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:30:01,381 INFO L225 Difference]: With dead ends: 99769 [2020-10-14 19:30:01,381 INFO L226 Difference]: Without dead ends: 53177 [2020-10-14 19:30:01,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:30:01,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53177 states. [2020-10-14 19:30:02,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53177 to 49785. [2020-10-14 19:30:02,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49785 states. [2020-10-14 19:30:02,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49785 states to 49785 states and 60002 transitions. [2020-10-14 19:30:02,311 INFO L78 Accepts]: Start accepts. Automaton has 49785 states and 60002 transitions. Word has length 1223 [2020-10-14 19:30:02,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:30:02,312 INFO L479 AbstractCegarLoop]: Abstraction has 49785 states and 60002 transitions. [2020-10-14 19:30:02,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:30:02,312 INFO L276 IsEmpty]: Start isEmpty. Operand 49785 states and 60002 transitions. [2020-10-14 19:30:02,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1262 [2020-10-14 19:30:02,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:30:02,369 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:30:02,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 19:30:02,370 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:30:02,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:30:02,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1833803063, now seen corresponding path program 1 times [2020-10-14 19:30:02,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:30:02,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1820722750] [2020-10-14 19:30:02,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:30:02,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:30:02,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:03,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:04,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:07,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:30:07,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1285 [2020-10-14 19:30:07,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:30:07,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5071 [2020-10-14 19:30:07,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:30:07,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:30:07,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:30:07,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 219 [2020-10-14 19:30:07,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 258 [2020-10-14 19:30:07,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:30:07,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:30:07,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:30:07,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:07,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:30:07,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:30:07,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:30:07,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 19:30:07,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:30:07,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:30:07,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:30:07,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:30:07,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:30:07,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:30:07,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:30:07,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:30:07,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:07,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:30:07,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 19:30:07,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:30:07,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:30:07,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:30:07,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:30:07,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:30:07,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:30:07,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:30:07,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:30:07,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 19:30:07,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:30:07,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:07,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:30:07,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 19:30:07,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:30:07,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 19:30:07,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:30:07,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:30:07,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:30:07,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:30:07,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:30:07,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:30:07,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-14 19:30:07,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:30:07,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:07,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:30:07,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 19:30:07,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:30:07,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 19:30:07,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:30:07,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:30:07,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:30:07,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:30:07,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 19:30:07,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:30:07,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-10-14 19:30:07,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:30:07,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:08,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:30:08,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-14 19:30:08,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:30:08,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 457 [2020-10-14 19:30:08,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:30:08,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:30:08,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:30:08,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:30:08,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 259 [2020-10-14 19:30:08,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:30:08,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 19:30:08,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:30:08,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:08,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:30:08,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 19:30:08,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:30:08,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 19:30:08,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:30:08,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:30:08,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 19:30:08,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:30:08,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 19:30:08,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:30:09,501 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 652 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-14 19:30:09,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1820722750] [2020-10-14 19:30:09,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:30:09,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 19:30:09,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825412430] [2020-10-14 19:30:09,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:30:09,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:30:09,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:30:09,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:30:09,504 INFO L87 Difference]: Start difference. First operand 49785 states and 60002 transitions. Second operand 8 states. [2020-10-14 19:30:32,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:30:32,254 INFO L93 Difference]: Finished difference Result 155614 states and 194177 transitions. [2020-10-14 19:30:32,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 19:30:32,255 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1261 [2020-10-14 19:30:32,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:30:32,550 INFO L225 Difference]: With dead ends: 155614 [2020-10-14 19:30:32,551 INFO L226 Difference]: Without dead ends: 105835 [2020-10-14 19:30:32,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-14 19:30:32,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105835 states. [2020-10-14 19:30:34,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105835 to 103914. [2020-10-14 19:30:34,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103914 states. [2020-10-14 19:30:34,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103914 states to 103914 states and 127310 transitions. [2020-10-14 19:30:34,681 INFO L78 Accepts]: Start accepts. Automaton has 103914 states and 127310 transitions. Word has length 1261 [2020-10-14 19:30:34,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:30:34,681 INFO L479 AbstractCegarLoop]: Abstraction has 103914 states and 127310 transitions. [2020-10-14 19:30:34,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 19:30:34,682 INFO L276 IsEmpty]: Start isEmpty. Operand 103914 states and 127310 transitions. [2020-10-14 19:30:34,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1383 [2020-10-14 19:30:34,777 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:30:34,778 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:30:34,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 19:30:34,778 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:30:34,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:30:34,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1564645264, now seen corresponding path program 1 times [2020-10-14 19:30:34,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:30:34,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2083211986] [2020-10-14 19:30:34,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:30:34,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:30:35,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:35,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:36,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:39,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:30:39,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1404 [2020-10-14 19:30:39,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:30:39,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-14 19:30:39,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:30:39,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:30:39,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:30:39,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 250 [2020-10-14 19:30:40,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 346 [2020-10-14 19:30:40,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:30:40,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:30:40,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:30:40,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:40,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:30:40,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:30:40,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:30:40,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 19:30:40,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:30:40,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:30:40,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:30:40,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:30:40,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:30:40,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:30:40,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:30:40,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:30:40,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:40,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:30:40,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-14 19:30:40,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:30:40,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 19:30:40,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:30:40,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:30:40,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:30:40,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:30:40,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:30:40,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:30:40,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-14 19:30:40,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:30:40,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:40,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:30:40,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 19:30:40,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:30:40,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 19:30:40,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:30:40,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:30:40,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:30:40,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:30:40,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 19:30:40,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:30:40,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-14 19:30:40,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:30:40,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:41,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:30:41,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 347 [2020-10-14 19:30:41,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:30:41,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 476 [2020-10-14 19:30:41,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:30:41,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:30:41,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:30:41,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:30:41,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 347 [2020-10-14 19:30:41,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:30:41,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 19:30:41,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:30:41,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:41,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:30:41,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 19:30:41,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:30:41,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-14 19:30:41,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:30:41,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:30:41,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 19:30:41,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:30:41,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 19:30:41,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0