/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=BIGGEST --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/Problem15_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 14:14:25,655 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 14:14:25,658 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 14:14:25,698 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 14:14:25,699 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 14:14:25,706 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 14:14:25,709 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 14:14:25,712 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 14:14:25,714 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 14:14:25,717 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 14:14:25,718 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 14:14:25,719 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 14:14:25,719 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 14:14:25,722 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 14:14:25,725 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 14:14:25,726 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 14:14:25,728 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 14:14:25,728 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 14:14:25,730 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 14:14:25,738 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 14:14:25,740 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 14:14:25,741 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 14:14:25,742 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 14:14:25,743 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 14:14:25,756 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 14:14:25,756 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 14:14:25,756 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 14:14:25,759 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 14:14:25,759 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 14:14:25,761 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 14:14:25,761 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 14:14:25,762 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 14:14:25,763 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 14:14:25,763 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 14:14:25,765 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 14:14:25,765 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 14:14:25,766 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 14:14:25,766 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 14:14:25,766 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 14:14:25,767 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 14:14:25,768 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 14:14:25,769 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 [2020-10-12 14:14:25,816 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 14:14:25,816 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 14:14:25,818 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 14:14:25,818 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 14:14:25,818 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 14:14:25,818 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 14:14:25,819 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 14:14:25,819 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 14:14:25,819 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 14:14:25,819 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 14:14:25,820 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 14:14:25,820 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 14:14:25,820 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 14:14:25,821 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 14:14:25,821 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 14:14:25,821 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 14:14:25,821 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 14:14:25,822 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 14:14:25,822 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 14:14:25,822 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 14:14:25,822 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 14:14:25,822 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 14:14:25,823 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 14:14:25,823 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 14:14:25,823 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 14:14:25,823 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 14:14:25,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 14:14:25,824 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 14:14:25,824 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 14:14:25,824 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 14:14:26,105 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 14:14:26,118 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 14:14:26,122 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 14:14:26,124 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 14:14:26,124 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 14:14:26,125 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label31.c [2020-10-12 14:14:26,202 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f33f90a1b/0d49afd4882d4b8b804a3c46e1b8cc9c/FLAGf6852a90a [2020-10-12 14:14:26,873 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 14:14:26,874 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label31.c [2020-10-12 14:14:26,910 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f33f90a1b/0d49afd4882d4b8b804a3c46e1b8cc9c/FLAGf6852a90a [2020-10-12 14:14:27,049 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f33f90a1b/0d49afd4882d4b8b804a3c46e1b8cc9c [2020-10-12 14:14:27,060 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 14:14:27,062 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 14:14:27,063 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 14:14:27,064 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 14:14:27,069 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 14:14:27,071 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:14:27" (1/1) ... [2020-10-12 14:14:27,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fdab4ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:14:27, skipping insertion in model container [2020-10-12 14:14:27,074 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:14:27" (1/1) ... [2020-10-12 14:14:27,083 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 14:14:27,179 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 14:14:28,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 14:14:28,073 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 14:14:28,462 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 14:14:28,482 INFO L208 MainTranslator]: Completed translation [2020-10-12 14:14:28,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:14:28 WrapperNode [2020-10-12 14:14:28,484 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 14:14:28,484 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 14:14:28,485 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 14:14:28,485 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 14:14:28,499 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:14:28" (1/1) ... [2020-10-12 14:14:28,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:14:28" (1/1) ... [2020-10-12 14:14:28,559 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:14:28" (1/1) ... [2020-10-12 14:14:28,559 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:14:28" (1/1) ... [2020-10-12 14:14:28,647 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:14:28" (1/1) ... [2020-10-12 14:14:28,695 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:14:28" (1/1) ... [2020-10-12 14:14:28,722 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:14:28" (1/1) ... [2020-10-12 14:14:28,749 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 14:14:28,750 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 14:14:28,750 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 14:14:28,751 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 14:14:28,752 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:14:28" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 14:14:28,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 14:14:28,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 14:14:28,815 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 14:14:28,815 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 14:14:28,815 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 14:14:28,815 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 14:14:28,815 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 14:14:28,816 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 14:14:28,816 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 14:14:28,816 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 14:14:28,816 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 14:14:28,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 14:14:28,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 14:14:34,807 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 14:14:34,807 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 14:14:34,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:14:34 BoogieIcfgContainer [2020-10-12 14:14:34,822 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 14:14:34,824 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 14:14:34,824 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 14:14:34,828 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 14:14:34,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 02:14:27" (1/3) ... [2020-10-12 14:14:34,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@597355b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:14:34, skipping insertion in model container [2020-10-12 14:14:34,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:14:28" (2/3) ... [2020-10-12 14:14:34,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@597355b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:14:34, skipping insertion in model container [2020-10-12 14:14:34,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:14:34" (3/3) ... [2020-10-12 14:14:34,833 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label31.c [2020-10-12 14:14:34,845 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 14:14:34,856 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 14:14:34,872 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 14:14:34,905 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 14:14:34,905 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 14:14:34,905 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 14:14:34,905 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 14:14:34,905 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 14:14:34,906 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 14:14:34,906 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 14:14:34,906 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 14:14:34,938 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-12 14:14:34,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-12 14:14:34,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:14:34,952 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] [2020-10-12 14:14:34,953 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:14:34,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:14:34,961 INFO L82 PathProgramCache]: Analyzing trace with hash 2120890949, now seen corresponding path program 1 times [2020-10-12 14:14:34,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:14:34,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [405234646] [2020-10-12 14:14:34,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:14:35,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:14:35,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:14:35,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:14:35,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 14:14:35,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:14:35,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 637 [2020-10-12 14:14:35,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:14:35,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:14:35,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:14:35,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-12 14:14:35,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 14:14:36,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:14:36,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:14:36,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:14:36,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:14:36,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:14:36,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:14:36,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 14:14:36,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:14:36,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:14:36,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:14:36,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:14:36,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:14:36,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:14:36,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [405234646] [2020-10-12 14:14:36,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:14:36,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 14:14:36,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610279512] [2020-10-12 14:14:36,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 14:14:36,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:14:36,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 14:14:36,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 14:14:36,191 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-12 14:14:45,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:14:45,027 INFO L93 Difference]: Finished difference Result 1199 states and 2164 transitions. [2020-10-12 14:14:45,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:14:45,029 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-10-12 14:14:45,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:14:45,056 INFO L225 Difference]: With dead ends: 1199 [2020-10-12 14:14:45,056 INFO L226 Difference]: Without dead ends: 697 [2020-10-12 14:14:45,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:14:45,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-12 14:14:45,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 691. [2020-10-12 14:14:45,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-12 14:14:45,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1012 transitions. [2020-10-12 14:14:45,188 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1012 transitions. Word has length 71 [2020-10-12 14:14:45,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:14:45,189 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 1012 transitions. [2020-10-12 14:14:45,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 14:14:45,189 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1012 transitions. [2020-10-12 14:14:45,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-12 14:14:45,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:14:45,197 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:14:45,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 14:14:45,198 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:14:45,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:14:45,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1052620642, now seen corresponding path program 1 times [2020-10-12 14:14:45,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:14:45,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59855456] [2020-10-12 14:14:45,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:14:45,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:14:45,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:14:45,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:14:45,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:14:49,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:14:49,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-12 14:14:49,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:14:49,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3850 [2020-10-12 14:14:49,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:14:49,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 14:14:49,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-12 14:14:49,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-12 14:14:49,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 14:14:49,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:14:49,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:14:49,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:14:49,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:14:49,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:14:49,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:14:49,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 14:14:49,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:14:49,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:14:49,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:14:49,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:14:49,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:14:49,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:14:49,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:14:49,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:14:49,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:14:49,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 14:14:49,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:14:49,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-12 14:14:49,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:14:49,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:14:49,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:14:49,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 14:14:49,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 14:14:49,777 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:14:49,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [59855456] [2020-10-12 14:14:49,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:14:49,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 14:14:49,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403930696] [2020-10-12 14:14:49,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:14:49,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:14:49,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:14:49,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:14:49,785 INFO L87 Difference]: Start difference. First operand 691 states and 1012 transitions. Second operand 8 states. [2020-10-12 14:14:57,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:14:57,045 INFO L93 Difference]: Finished difference Result 1507 states and 2170 transitions. [2020-10-12 14:14:57,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:14:57,046 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 140 [2020-10-12 14:14:57,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:14:57,053 INFO L225 Difference]: With dead ends: 1507 [2020-10-12 14:14:57,053 INFO L226 Difference]: Without dead ends: 695 [2020-10-12 14:14:57,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:14:57,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-10-12 14:14:57,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 691. [2020-10-12 14:14:57,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-12 14:14:57,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 929 transitions. [2020-10-12 14:14:57,091 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 929 transitions. Word has length 140 [2020-10-12 14:14:57,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:14:57,092 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 929 transitions. [2020-10-12 14:14:57,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:14:57,092 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 929 transitions. [2020-10-12 14:14:57,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-12 14:14:57,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:14:57,096 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:14:57,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 14:14:57,097 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:14:57,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:14:57,098 INFO L82 PathProgramCache]: Analyzing trace with hash 538255193, now seen corresponding path program 1 times [2020-10-12 14:14:57,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:14:57,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1844185626] [2020-10-12 14:14:57,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:14:57,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:14:57,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:14:57,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:14:58,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:14:58,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-12 14:14:58,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:14:58,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1690 [2020-10-12 14:14:58,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:14:58,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:14:58,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:14:58,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-12 14:14:58,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:14:59,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:14:59,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:14:59,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:14:59,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:14:59,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:14:59,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:14:59,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 14:14:59,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:14:59,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:14:59,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:14:59,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:14:59,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:14:59,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:14:59,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:14:59,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:14:59,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:14:59,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 14:14:59,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:14:59,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-12 14:14:59,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:14:59,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:14:59,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:14:59,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 14:14:59,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:14:59,402 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:14:59,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1844185626] [2020-10-12 14:14:59,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:14:59,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 14:14:59,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30748676] [2020-10-12 14:14:59,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:14:59,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:14:59,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:14:59,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:14:59,408 INFO L87 Difference]: Start difference. First operand 691 states and 929 transitions. Second operand 8 states. [2020-10-12 14:15:09,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:15:09,927 INFO L93 Difference]: Finished difference Result 2659 states and 3604 transitions. [2020-10-12 14:15:09,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 14:15:09,929 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 151 [2020-10-12 14:15:09,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:15:09,946 INFO L225 Difference]: With dead ends: 2659 [2020-10-12 14:15:09,947 INFO L226 Difference]: Without dead ends: 1974 [2020-10-12 14:15:09,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-10-12 14:15:09,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1974 states. [2020-10-12 14:15:10,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1974 to 1960. [2020-10-12 14:15:10,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1960 states. [2020-10-12 14:15:10,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1960 states to 1960 states and 2340 transitions. [2020-10-12 14:15:10,031 INFO L78 Accepts]: Start accepts. Automaton has 1960 states and 2340 transitions. Word has length 151 [2020-10-12 14:15:10,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:15:10,032 INFO L479 AbstractCegarLoop]: Abstraction has 1960 states and 2340 transitions. [2020-10-12 14:15:10,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:15:10,032 INFO L276 IsEmpty]: Start isEmpty. Operand 1960 states and 2340 transitions. [2020-10-12 14:15:10,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-10-12 14:15:10,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:15:10,045 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2020-10-12 14:15:10,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 14:15:10,045 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:15:10,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:15:10,046 INFO L82 PathProgramCache]: Analyzing trace with hash -782120907, now seen corresponding path program 1 times [2020-10-12 14:15:10,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:15:10,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [563582051] [2020-10-12 14:15:10,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:15:10,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:15:10,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:15:10,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:15:10,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:15:13,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:15:13,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:15:15,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:15:15,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 392 [2020-10-12 14:15:15,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 14:15:15,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-12 14:15:15,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:15:15,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 14:15:15,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:15:15,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 282 [2020-10-12 14:15:15,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:15:15,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:15:15,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:15:15,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:15:15,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:15:15,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:15:15,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:15:15,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 14:15:15,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:15:15,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:15:15,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:15:15,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:15:15,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 14:15:15,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:15:15,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:15:15,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:15:16,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:15:16,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-12 14:15:16,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:15:16,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 504 [2020-10-12 14:15:16,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:15:16,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:15:16,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:15:16,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 238 [2020-10-12 14:15:16,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:15:16,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-12 14:15:16,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:15:16,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:15:16,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:15:16,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:15:16,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 14:15:16,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:15:16,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 316 [2020-10-12 14:15:16,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:15:16,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:15:16,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:15:16,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-12 14:15:16,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:15:17,109 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 132 proven. 67 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 14:15:17,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [563582051] [2020-10-12 14:15:17,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:15:17,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 14:15:17,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108376944] [2020-10-12 14:15:17,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 14:15:17,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:15:17,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 14:15:17,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-12 14:15:17,121 INFO L87 Difference]: Start difference. First operand 1960 states and 2340 transitions. Second operand 10 states. [2020-10-12 14:15:37,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:15:37,102 INFO L93 Difference]: Finished difference Result 6579 states and 8505 transitions. [2020-10-12 14:15:37,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 14:15:37,103 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 380 [2020-10-12 14:15:37,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:15:37,130 INFO L225 Difference]: With dead ends: 6579 [2020-10-12 14:15:37,130 INFO L226 Difference]: Without dead ends: 4883 [2020-10-12 14:15:37,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=150, Invalid=500, Unknown=0, NotChecked=0, Total=650 [2020-10-12 14:15:37,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4883 states. [2020-10-12 14:15:37,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4883 to 4814. [2020-10-12 14:15:37,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4814 states. [2020-10-12 14:15:37,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4814 states to 4814 states and 6016 transitions. [2020-10-12 14:15:37,277 INFO L78 Accepts]: Start accepts. Automaton has 4814 states and 6016 transitions. Word has length 380 [2020-10-12 14:15:37,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:15:37,278 INFO L479 AbstractCegarLoop]: Abstraction has 4814 states and 6016 transitions. [2020-10-12 14:15:37,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 14:15:37,278 INFO L276 IsEmpty]: Start isEmpty. Operand 4814 states and 6016 transitions. [2020-10-12 14:15:37,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2020-10-12 14:15:37,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:15:37,287 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2020-10-12 14:15:37,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 14:15:37,288 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:15:37,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:15:37,288 INFO L82 PathProgramCache]: Analyzing trace with hash 434796303, now seen corresponding path program 1 times [2020-10-12 14:15:37,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:15:37,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1325612720] [2020-10-12 14:15:37,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:15:37,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:15:37,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:15:37,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:15:39,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:15:39,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 443 [2020-10-12 14:15:39,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:15:39,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2213 [2020-10-12 14:15:39,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:15:39,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:15:39,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 371 [2020-10-12 14:15:39,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 14:15:39,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:15:39,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:15:39,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:15:39,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:15:39,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:15:39,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:15:39,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:15:39,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:15:39,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:15:39,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:15:39,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:15:39,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:15:39,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:15:39,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:15:39,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:15:39,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:15:39,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:15:39,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:15:39,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:15:39,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-12 14:15:39,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:15:39,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:15:39,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:15:39,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:15:39,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 14:15:39,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:15:39,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:15:39,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:15:40,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:15:40,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 14:15:40,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:15:40,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-12 14:15:40,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:15:40,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:15:40,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:15:40,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-12 14:15:40,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:15:40,304 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-12 14:15:40,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1325612720] [2020-10-12 14:15:40,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:15:40,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:15:40,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314323078] [2020-10-12 14:15:40,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:15:40,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:15:40,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:15:40,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:15:40,310 INFO L87 Difference]: Start difference. First operand 4814 states and 6016 transitions. Second operand 5 states. [2020-10-12 14:15:48,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:15:48,625 INFO L93 Difference]: Finished difference Result 10005 states and 12774 transitions. [2020-10-12 14:15:48,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:15:48,627 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 431 [2020-10-12 14:15:48,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:15:48,668 INFO L225 Difference]: With dead ends: 10005 [2020-10-12 14:15:48,668 INFO L226 Difference]: Without dead ends: 7356 [2020-10-12 14:15:48,680 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:15:48,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7356 states. [2020-10-12 14:15:48,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7356 to 5811. [2020-10-12 14:15:48,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5811 states. [2020-10-12 14:15:48,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5811 states to 5811 states and 7320 transitions. [2020-10-12 14:15:48,883 INFO L78 Accepts]: Start accepts. Automaton has 5811 states and 7320 transitions. Word has length 431 [2020-10-12 14:15:48,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:15:48,885 INFO L479 AbstractCegarLoop]: Abstraction has 5811 states and 7320 transitions. [2020-10-12 14:15:48,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:15:48,885 INFO L276 IsEmpty]: Start isEmpty. Operand 5811 states and 7320 transitions. [2020-10-12 14:15:48,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2020-10-12 14:15:48,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:15:48,897 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2020-10-12 14:15:48,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 14:15:48,897 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:15:48,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:15:48,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1851622909, now seen corresponding path program 1 times [2020-10-12 14:15:48,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:15:48,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1157597165] [2020-10-12 14:15:48,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:15:49,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:15:49,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:15:49,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:15:51,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:15:51,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 449 [2020-10-12 14:15:51,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:15:51,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2732 [2020-10-12 14:15:51,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:15:51,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:15:51,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-12 14:15:51,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-12 14:15:51,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:15:51,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:15:51,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:15:51,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:15:51,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:15:51,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:15:51,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:15:51,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 14:15:51,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:15:51,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:15:51,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:15:51,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:15:51,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:15:51,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:15:52,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:15:52,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:15:52,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:15:52,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 14:15:52,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:15:52,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 436 [2020-10-12 14:15:52,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:15:52,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:15:52,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:15:52,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-12 14:15:52,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:15:52,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-12 14:15:52,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:15:52,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:15:52,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:15:52,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 14:15:52,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:15:52,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-12 14:15:52,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:15:52,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:15:52,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:15:52,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 14:15:52,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:15:53,495 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 205 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 14:15:53,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1157597165] [2020-10-12 14:15:53,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:15:53,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 14:15:53,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689339953] [2020-10-12 14:15:53,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:15:53,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:15:53,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:15:53,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:15:53,500 INFO L87 Difference]: Start difference. First operand 5811 states and 7320 transitions. Second operand 8 states. [2020-10-12 14:16:05,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:16:05,647 INFO L93 Difference]: Finished difference Result 17688 states and 24137 transitions. [2020-10-12 14:16:05,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 14:16:05,649 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 437 [2020-10-12 14:16:05,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:16:05,724 INFO L225 Difference]: With dead ends: 17688 [2020-10-12 14:16:05,724 INFO L226 Difference]: Without dead ends: 12190 [2020-10-12 14:16:05,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-12 14:16:05,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12190 states. [2020-10-12 14:16:06,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12190 to 11509. [2020-10-12 14:16:06,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11509 states. [2020-10-12 14:16:06,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11509 states to 11509 states and 14948 transitions. [2020-10-12 14:16:06,086 INFO L78 Accepts]: Start accepts. Automaton has 11509 states and 14948 transitions. Word has length 437 [2020-10-12 14:16:06,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:16:06,088 INFO L479 AbstractCegarLoop]: Abstraction has 11509 states and 14948 transitions. [2020-10-12 14:16:06,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:16:06,088 INFO L276 IsEmpty]: Start isEmpty. Operand 11509 states and 14948 transitions. [2020-10-12 14:16:06,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2020-10-12 14:16:06,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:16:06,104 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:16:06,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 14:16:06,104 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:16:06,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:16:06,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1286011613, now seen corresponding path program 1 times [2020-10-12 14:16:06,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:16:06,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [603495925] [2020-10-12 14:16:06,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:16:06,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:16:06,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:06,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:07,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:10,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:11,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:16:11,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 549 [2020-10-12 14:16:11,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:16:11,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5079 [2020-10-12 14:16:11,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:16:11,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:16:11,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-12 14:16:11,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-12 14:16:11,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:16:11,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:16:11,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:16:11,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:11,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:16:11,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:16:11,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:16:11,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:16:11,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:16:11,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:16:11,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:16:11,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:16:11,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:16:11,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:16:11,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:16:11,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:11,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:16:11,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:16:11,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:16:11,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-12 14:16:11,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:16:11,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:16:11,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:16:11,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:16:11,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:16:11,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:16:11,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:16:11,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:11,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:16:11,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:16:11,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:16:11,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-12 14:16:11,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:16:11,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:16:11,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:16:11,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-12 14:16:11,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:16:11,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-12 14:16:11,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:16:11,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:11,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:16:11,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 14:16:11,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:16:11,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-12 14:16:11,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:16:11,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:16:11,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:16:11,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-12 14:16:11,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:16:12,307 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 282 proven. 65 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-12 14:16:12,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [603495925] [2020-10-12 14:16:12,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:16:12,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 14:16:12,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925030372] [2020-10-12 14:16:12,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 14:16:12,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:16:12,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 14:16:12,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:16:12,311 INFO L87 Difference]: Start difference. First operand 11509 states and 14948 transitions. Second operand 6 states. [2020-10-12 14:16:20,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:16:20,680 INFO L93 Difference]: Finished difference Result 21922 states and 28907 transitions. [2020-10-12 14:16:20,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 14:16:20,682 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 535 [2020-10-12 14:16:20,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:16:20,740 INFO L225 Difference]: With dead ends: 21922 [2020-10-12 14:16:20,740 INFO L226 Difference]: Without dead ends: 14123 [2020-10-12 14:16:20,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:16:20,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14123 states. [2020-10-12 14:16:21,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14123 to 13772. [2020-10-12 14:16:21,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13772 states. [2020-10-12 14:16:21,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13772 states to 13772 states and 17923 transitions. [2020-10-12 14:16:21,158 INFO L78 Accepts]: Start accepts. Automaton has 13772 states and 17923 transitions. Word has length 535 [2020-10-12 14:16:21,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:16:21,159 INFO L479 AbstractCegarLoop]: Abstraction has 13772 states and 17923 transitions. [2020-10-12 14:16:21,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 14:16:21,160 INFO L276 IsEmpty]: Start isEmpty. Operand 13772 states and 17923 transitions. [2020-10-12 14:16:21,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2020-10-12 14:16:21,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:16:21,186 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:16:21,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 14:16:21,187 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:16:21,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:16:21,188 INFO L82 PathProgramCache]: Analyzing trace with hash -327041065, now seen corresponding path program 1 times [2020-10-12 14:16:21,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:16:21,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2020276291] [2020-10-12 14:16:21,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:16:21,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:16:21,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:21,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:22,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:24,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:26,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:16:26,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 552 [2020-10-12 14:16:26,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:16:26,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5079 [2020-10-12 14:16:26,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:16:26,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:16:26,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-12 14:16:26,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-12 14:16:26,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:16:26,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:16:26,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:16:26,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:26,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:16:26,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:16:26,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:16:26,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:16:26,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:16:26,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:16:26,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:16:26,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:16:26,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:16:26,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:16:26,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:16:26,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:26,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:16:26,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:16:26,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:16:26,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-12 14:16:26,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:16:26,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:16:26,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:16:26,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:16:26,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:16:26,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:16:26,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:16:26,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:26,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:16:26,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:16:26,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:16:26,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-12 14:16:26,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:16:26,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:16:26,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:16:26,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-12 14:16:26,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:16:26,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-12 14:16:26,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:16:26,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:26,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:16:26,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-12 14:16:26,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:16:26,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-12 14:16:26,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:16:26,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:16:26,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:16:26,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-12 14:16:26,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:16:27,033 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 355 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-12 14:16:27,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2020276291] [2020-10-12 14:16:27,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:16:27,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:16:27,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969309850] [2020-10-12 14:16:27,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:16:27,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:16:27,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:16:27,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:16:27,035 INFO L87 Difference]: Start difference. First operand 13772 states and 17923 transitions. Second operand 7 states. [2020-10-12 14:16:34,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:16:34,579 INFO L93 Difference]: Finished difference Result 27463 states and 37298 transitions. [2020-10-12 14:16:34,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:16:34,581 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 538 [2020-10-12 14:16:34,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:16:34,665 INFO L225 Difference]: With dead ends: 27463 [2020-10-12 14:16:34,666 INFO L226 Difference]: Without dead ends: 14004 [2020-10-12 14:16:34,711 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:16:34,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14004 states. [2020-10-12 14:16:35,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14004 to 13534. [2020-10-12 14:16:35,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13534 states. [2020-10-12 14:16:35,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13534 states to 13534 states and 17064 transitions. [2020-10-12 14:16:35,206 INFO L78 Accepts]: Start accepts. Automaton has 13534 states and 17064 transitions. Word has length 538 [2020-10-12 14:16:35,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:16:35,207 INFO L479 AbstractCegarLoop]: Abstraction has 13534 states and 17064 transitions. [2020-10-12 14:16:35,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:16:35,208 INFO L276 IsEmpty]: Start isEmpty. Operand 13534 states and 17064 transitions. [2020-10-12 14:16:35,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2020-10-12 14:16:35,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:16:35,218 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:16:35,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 14:16:35,219 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:16:35,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:16:35,220 INFO L82 PathProgramCache]: Analyzing trace with hash -82080963, now seen corresponding path program 1 times [2020-10-12 14:16:35,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:16:35,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1016966143] [2020-10-12 14:16:35,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:16:35,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:16:35,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:35,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:37,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:38,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:39,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:16:39,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 571 [2020-10-12 14:16:39,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:16:39,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4354 [2020-10-12 14:16:39,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:16:39,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:16:39,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 500 [2020-10-12 14:16:39,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 14:16:39,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:16:39,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:16:39,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:16:39,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:39,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:16:39,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:16:39,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:16:39,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:16:39,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:16:39,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:16:39,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:16:39,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:16:39,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:16:39,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:16:39,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:16:40,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:40,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:16:40,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:16:40,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:16:40,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-12 14:16:40,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:16:40,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:16:40,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:16:40,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:16:40,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:16:40,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:16:40,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:16:40,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:40,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:16:40,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:16:40,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:16:40,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 14:16:40,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:16:40,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:16:40,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:16:40,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:16:40,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:16:40,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-12 14:16:40,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:16:40,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:40,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:16:40,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 14:16:40,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:16:40,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-12 14:16:40,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:16:40,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:16:40,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:16:40,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-12 14:16:40,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:16:40,633 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 195 proven. 3 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2020-10-12 14:16:40,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1016966143] [2020-10-12 14:16:40,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:16:40,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:16:40,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363745431] [2020-10-12 14:16:40,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:16:40,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:16:40,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:16:40,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:16:40,636 INFO L87 Difference]: Start difference. First operand 13534 states and 17064 transitions. Second operand 5 states. [2020-10-12 14:16:46,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:16:46,270 INFO L93 Difference]: Finished difference Result 23679 states and 29921 transitions. [2020-10-12 14:16:46,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:16:46,272 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 557 [2020-10-12 14:16:46,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:16:46,321 INFO L225 Difference]: With dead ends: 23679 [2020-10-12 14:16:46,321 INFO L226 Difference]: Without dead ends: 13544 [2020-10-12 14:16:46,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:16:46,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13544 states. [2020-10-12 14:16:46,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13544 to 13534. [2020-10-12 14:16:46,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13534 states. [2020-10-12 14:16:46,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13534 states to 13534 states and 17045 transitions. [2020-10-12 14:16:46,678 INFO L78 Accepts]: Start accepts. Automaton has 13534 states and 17045 transitions. Word has length 557 [2020-10-12 14:16:46,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:16:46,680 INFO L479 AbstractCegarLoop]: Abstraction has 13534 states and 17045 transitions. [2020-10-12 14:16:46,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:16:46,680 INFO L276 IsEmpty]: Start isEmpty. Operand 13534 states and 17045 transitions. [2020-10-12 14:16:46,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2020-10-12 14:16:46,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:16:46,691 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:16:46,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 14:16:46,692 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:16:46,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:16:46,692 INFO L82 PathProgramCache]: Analyzing trace with hash 235963221, now seen corresponding path program 1 times [2020-10-12 14:16:46,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:16:46,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [790848508] [2020-10-12 14:16:46,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:16:46,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:16:47,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:47,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:47,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:48,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:48,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:49,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:52,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:16:52,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 589 [2020-10-12 14:16:52,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 14:16:52,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-12 14:16:52,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:16:52,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 14:16:52,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:16:52,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 468 [2020-10-12 14:16:52,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:16:52,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:16:52,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:16:52,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:52,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:16:52,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:16:52,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:16:52,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:16:52,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:16:52,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:16:52,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:16:52,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:16:52,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:16:52,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:16:52,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:16:52,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:52,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:16:52,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:16:52,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:16:52,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 469 [2020-10-12 14:16:52,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:16:52,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:16:52,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:16:52,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 275 [2020-10-12 14:16:52,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:16:53,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:16:53,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:16:53,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:53,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:16:53,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-12 14:16:53,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:16:53,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-10-12 14:16:53,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:16:53,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:16:53,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:16:53,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-12 14:16:53,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:16:53,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-10-12 14:16:53,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:16:53,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:53,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:16:54,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:16:54,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 14:16:54,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:16:54,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-12 14:16:54,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:16:54,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:16:54,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:16:54,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-12 14:16:54,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:16:55,804 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 394 proven. 105 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-12 14:16:55,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [790848508] [2020-10-12 14:16:55,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:16:55,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 14:16:55,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686906756] [2020-10-12 14:16:55,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 14:16:55,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:16:55,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 14:16:55,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-12 14:16:55,807 INFO L87 Difference]: Start difference. First operand 13534 states and 17045 transitions. Second operand 10 states. [2020-10-12 14:17:08,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:17:08,901 INFO L93 Difference]: Finished difference Result 25963 states and 33065 transitions. [2020-10-12 14:17:08,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 14:17:08,903 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 575 [2020-10-12 14:17:08,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:17:08,955 INFO L225 Difference]: With dead ends: 25963 [2020-10-12 14:17:08,956 INFO L226 Difference]: Without dead ends: 13636 [2020-10-12 14:17:08,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2020-10-12 14:17:08,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13636 states. [2020-10-12 14:17:09,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13636 to 13562. [2020-10-12 14:17:09,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13562 states. [2020-10-12 14:17:09,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13562 states to 13562 states and 17104 transitions. [2020-10-12 14:17:09,448 INFO L78 Accepts]: Start accepts. Automaton has 13562 states and 17104 transitions. Word has length 575 [2020-10-12 14:17:09,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:17:09,449 INFO L479 AbstractCegarLoop]: Abstraction has 13562 states and 17104 transitions. [2020-10-12 14:17:09,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 14:17:09,449 INFO L276 IsEmpty]: Start isEmpty. Operand 13562 states and 17104 transitions. [2020-10-12 14:17:09,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 585 [2020-10-12 14:17:09,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:17:09,463 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 14:17:09,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 14:17:09,463 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:17:09,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:17:09,464 INFO L82 PathProgramCache]: Analyzing trace with hash -2110840618, now seen corresponding path program 1 times [2020-10-12 14:17:09,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:17:09,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [637922692] [2020-10-12 14:17:09,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:17:09,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:09,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:09,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:11,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:11,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:13,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:13,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 598 [2020-10-12 14:17:13,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:17:13,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4110 [2020-10-12 14:17:13,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:13,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:17:13,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-12 14:17:13,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-12 14:17:13,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:17:13,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:17:13,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:13,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:13,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:13,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:17:13,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:17:13,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 14:17:13,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:13,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:17:13,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:17:13,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:17:13,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:17:13,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:17:13,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:13,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:14,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:14,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:17:14,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:17:14,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-12 14:17:14,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:14,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:17:14,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:17:14,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-12 14:17:14,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:17:14,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:17:14,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:14,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:14,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:14,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:17:14,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:17:14,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-12 14:17:14,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:14,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:17:14,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:17:14,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-12 14:17:14,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:17:14,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-12 14:17:14,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:14,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:14,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:14,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-12 14:17:14,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:17:14,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-12 14:17:14,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:14,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:17:14,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-12 14:17:14,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:17:14,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:17:15,161 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 304 proven. 110 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-10-12 14:17:15,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [637922692] [2020-10-12 14:17:15,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:17:15,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:17:15,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432733304] [2020-10-12 14:17:15,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:17:15,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:17:15,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:17:15,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:17:15,164 INFO L87 Difference]: Start difference. First operand 13562 states and 17104 transitions. Second operand 7 states. [2020-10-12 14:17:24,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:17:24,833 INFO L93 Difference]: Finished difference Result 28777 states and 36440 transitions. [2020-10-12 14:17:24,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 14:17:24,836 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 584 [2020-10-12 14:17:24,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:17:24,892 INFO L225 Difference]: With dead ends: 28777 [2020-10-12 14:17:24,892 INFO L226 Difference]: Without dead ends: 15528 [2020-10-12 14:17:24,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-12 14:17:24,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15528 states. [2020-10-12 14:17:25,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15528 to 15433. [2020-10-12 14:17:25,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15433 states. [2020-10-12 14:17:25,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15433 states to 15433 states and 19237 transitions. [2020-10-12 14:17:25,279 INFO L78 Accepts]: Start accepts. Automaton has 15433 states and 19237 transitions. Word has length 584 [2020-10-12 14:17:25,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:17:25,280 INFO L479 AbstractCegarLoop]: Abstraction has 15433 states and 19237 transitions. [2020-10-12 14:17:25,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:17:25,280 INFO L276 IsEmpty]: Start isEmpty. Operand 15433 states and 19237 transitions. [2020-10-12 14:17:25,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2020-10-12 14:17:25,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:17:25,291 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 14:17:25,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 14:17:25,292 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:17:25,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:17:25,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1584279966, now seen corresponding path program 1 times [2020-10-12 14:17:25,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:17:25,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [623638549] [2020-10-12 14:17:25,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:17:25,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:25,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:26,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:26,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:27,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:27,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 610 [2020-10-12 14:17:27,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:17:27,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1649 [2020-10-12 14:17:27,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:27,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:17:27,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-12 14:17:27,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-12 14:17:27,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:17:27,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:17:27,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:27,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:27,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:27,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:17:27,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:17:27,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:17:27,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:27,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:17:27,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:17:27,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:17:27,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:17:27,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:17:27,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:27,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:27,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:27,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 14:17:27,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:17:27,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-12 14:17:27,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:27,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:17:27,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:17:27,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:17:27,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:17:27,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-12 14:17:27,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:27,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:27,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:27,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:17:27,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:17:27,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-12 14:17:27,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:27,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:17:27,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:17:27,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-12 14:17:27,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:17:27,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-12 14:17:27,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:27,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:27,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:27,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-12 14:17:27,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:17:27,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-12 14:17:27,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:27,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:17:27,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:17:27,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-12 14:17:27,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:17:28,193 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 430 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-12 14:17:28,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [623638549] [2020-10-12 14:17:28,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:17:28,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:17:28,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952617357] [2020-10-12 14:17:28,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:17:28,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:17:28,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:17:28,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:17:28,196 INFO L87 Difference]: Start difference. First operand 15433 states and 19237 transitions. Second operand 7 states. [2020-10-12 14:17:40,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:17:40,187 INFO L93 Difference]: Finished difference Result 36233 states and 47265 transitions. [2020-10-12 14:17:40,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 14:17:40,189 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 596 [2020-10-12 14:17:40,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:17:40,254 INFO L225 Difference]: With dead ends: 36233 [2020-10-12 14:17:40,254 INFO L226 Difference]: Without dead ends: 22385 [2020-10-12 14:17:40,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:17:40,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22385 states. [2020-10-12 14:17:40,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22385 to 22337. [2020-10-12 14:17:40,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22337 states. [2020-10-12 14:17:40,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22337 states to 22337 states and 28658 transitions. [2020-10-12 14:17:40,744 INFO L78 Accepts]: Start accepts. Automaton has 22337 states and 28658 transitions. Word has length 596 [2020-10-12 14:17:40,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:17:40,745 INFO L479 AbstractCegarLoop]: Abstraction has 22337 states and 28658 transitions. [2020-10-12 14:17:40,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:17:40,745 INFO L276 IsEmpty]: Start isEmpty. Operand 22337 states and 28658 transitions. [2020-10-12 14:17:40,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 631 [2020-10-12 14:17:40,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:17:40,756 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:17:40,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 14:17:40,757 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:17:40,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:17:40,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1990532411, now seen corresponding path program 1 times [2020-10-12 14:17:40,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:17:40,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1334556596] [2020-10-12 14:17:40,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:17:40,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:40,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:41,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:43,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:43,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 644 [2020-10-12 14:17:43,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:17:43,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2371 [2020-10-12 14:17:43,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:43,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:17:43,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 573 [2020-10-12 14:17:43,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 14:17:43,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:17:43,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:17:43,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:43,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:43,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:43,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:17:43,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:17:43,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:17:43,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:43,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:17:43,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:17:43,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:17:43,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:17:43,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:17:43,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:43,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:43,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:43,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 14:17:43,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:17:43,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-12 14:17:43,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:43,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:17:43,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:17:43,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:17:43,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:17:43,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-12 14:17:43,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:43,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:43,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:43,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-12 14:17:43,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:17:43,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-12 14:17:43,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:43,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:17:43,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:17:43,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:17:43,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:17:43,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-12 14:17:43,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:43,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:43,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:43,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 14:17:43,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:17:43,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-12 14:17:43,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:43,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:17:43,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:17:43,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-12 14:17:43,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:17:43,881 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 195 proven. 3 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2020-10-12 14:17:43,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1334556596] [2020-10-12 14:17:43,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:17:43,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:17:43,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629214201] [2020-10-12 14:17:43,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:17:43,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:17:43,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:17:43,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:17:43,883 INFO L87 Difference]: Start difference. First operand 22337 states and 28658 transitions. Second operand 5 states. [2020-10-12 14:17:55,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:17:55,447 INFO L93 Difference]: Finished difference Result 48033 states and 62526 transitions. [2020-10-12 14:17:55,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:17:55,449 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 630 [2020-10-12 14:17:55,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:17:55,546 INFO L225 Difference]: With dead ends: 48033 [2020-10-12 14:17:55,546 INFO L226 Difference]: Without dead ends: 27281 [2020-10-12 14:17:55,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:17:55,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27281 states. [2020-10-12 14:17:56,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27281 to 27267. [2020-10-12 14:17:56,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27267 states. [2020-10-12 14:17:56,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27267 states to 27267 states and 33819 transitions. [2020-10-12 14:17:56,166 INFO L78 Accepts]: Start accepts. Automaton has 27267 states and 33819 transitions. Word has length 630 [2020-10-12 14:17:56,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:17:56,166 INFO L479 AbstractCegarLoop]: Abstraction has 27267 states and 33819 transitions. [2020-10-12 14:17:56,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:17:56,167 INFO L276 IsEmpty]: Start isEmpty. Operand 27267 states and 33819 transitions. [2020-10-12 14:17:56,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 634 [2020-10-12 14:17:56,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:17:56,180 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 14:17:56,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 14:17:56,181 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:17:56,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:17:56,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1142307126, now seen corresponding path program 1 times [2020-10-12 14:17:56,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:17:56,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [502444697] [2020-10-12 14:17:56,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:17:56,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:56,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:56,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:59,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:00,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:18:00,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 647 [2020-10-12 14:18:00,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:18:00,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3796 [2020-10-12 14:18:00,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:18:00,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 14:18:00,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-12 14:18:00,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-12 14:18:00,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:18:00,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:18:00,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:18:00,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:00,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:18:00,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:18:00,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:18:00,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:18:00,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:18:00,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:18:00,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:18:00,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:18:00,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:18:00,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:18:00,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:18:00,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:00,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:18:00,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 14:18:00,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:18:00,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-12 14:18:00,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:18:00,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:18:00,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:18:00,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-12 14:18:00,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:18:00,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-12 14:18:00,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:18:00,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:00,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:18:00,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:18:00,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:18:00,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-12 14:18:00,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:18:00,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:18:00,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:18:00,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-12 14:18:00,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:18:00,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-12 14:18:00,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:18:00,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:00,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:18:00,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-12 14:18:00,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:18:00,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-12 14:18:00,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:18:00,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:18:00,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:18:00,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-12 14:18:00,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:18:01,313 INFO L134 CoverageAnalysis]: Checked inductivity of 579 backedges. 466 proven. 110 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 14:18:01,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [502444697] [2020-10-12 14:18:01,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:18:01,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 14:18:01,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214203780] [2020-10-12 14:18:01,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 14:18:01,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:18:01,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 14:18:01,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-12 14:18:01,315 INFO L87 Difference]: Start difference. First operand 27267 states and 33819 transitions. Second operand 10 states. [2020-10-12 14:18:04,805 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 21