/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label42.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 06:39:52,932 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 06:39:52,935 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 06:39:52,979 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 06:39:52,980 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 06:39:52,991 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 06:39:52,993 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 06:39:52,997 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 06:39:53,000 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 06:39:53,003 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 06:39:53,004 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 06:39:53,005 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 06:39:53,006 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 06:39:53,009 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 06:39:53,012 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 06:39:53,013 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 06:39:53,015 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 06:39:53,018 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 06:39:53,020 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 06:39:53,026 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 06:39:53,030 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 06:39:53,031 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 06:39:53,032 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 06:39:53,033 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 06:39:53,037 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 06:39:53,037 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 06:39:53,038 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 06:39:53,041 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 06:39:53,041 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 06:39:53,044 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 06:39:53,044 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 06:39:53,045 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 06:39:53,046 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 06:39:53,046 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 06:39:53,048 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 06:39:53,048 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 06:39:53,049 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 06:39:53,049 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 06:39:53,049 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 06:39:53,050 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 06:39:53,052 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 06:39:53,053 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 06:39:53,101 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 06:39:53,102 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 06:39:53,104 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 06:39:53,104 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 06:39:53,104 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 06:39:53,105 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 06:39:53,105 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 06:39:53,105 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 06:39:53,106 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 06:39:53,106 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 06:39:53,107 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 06:39:53,107 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 06:39:53,107 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 06:39:53,108 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 06:39:53,108 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 06:39:53,108 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 06:39:53,109 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 06:39:53,109 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 06:39:53,109 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 06:39:53,109 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 06:39:53,109 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 06:39:53,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:39:53,110 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 06:39:53,110 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 06:39:53,110 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 06:39:53,110 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 06:39:53,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 06:39:53,111 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 06:39:53,111 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 06:39:53,111 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 06:39:53,400 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 06:39:53,420 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 06:39:53,424 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 06:39:53,426 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 06:39:53,427 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 06:39:53,428 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label42.c [2020-10-13 06:39:53,497 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c6885f99b/f1433b32e86e494e99bff77ab5319b5c/FLAG1bc7af837 [2020-10-13 06:39:54,284 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 06:39:54,285 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label42.c [2020-10-13 06:39:54,323 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c6885f99b/f1433b32e86e494e99bff77ab5319b5c/FLAG1bc7af837 [2020-10-13 06:39:54,826 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c6885f99b/f1433b32e86e494e99bff77ab5319b5c [2020-10-13 06:39:54,836 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 06:39:54,838 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 06:39:54,840 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 06:39:54,840 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 06:39:54,844 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 06:39:54,845 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:39:54" (1/1) ... [2020-10-13 06:39:54,848 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e979d3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:39:54, skipping insertion in model container [2020-10-13 06:39:54,848 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:39:54" (1/1) ... [2020-10-13 06:39:54,857 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 06:39:55,016 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 06:39:56,561 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:39:56,568 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 06:39:57,323 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:39:57,356 INFO L208 MainTranslator]: Completed translation [2020-10-13 06:39:57,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:39:57 WrapperNode [2020-10-13 06:39:57,358 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 06:39:57,359 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 06:39:57,359 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 06:39:57,359 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 06:39:57,375 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:39:57" (1/1) ... [2020-10-13 06:39:57,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:39:57" (1/1) ... [2020-10-13 06:39:57,435 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:39:57" (1/1) ... [2020-10-13 06:39:57,435 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:39:57" (1/1) ... [2020-10-13 06:39:57,548 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:39:57" (1/1) ... [2020-10-13 06:39:57,577 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:39:57" (1/1) ... [2020-10-13 06:39:57,604 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:39:57" (1/1) ... [2020-10-13 06:39:57,632 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 06:39:57,633 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 06:39:57,633 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 06:39:57,633 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 06:39:57,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:39:57" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:39:57,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 06:39:57,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 06:39:57,705 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 06:39:57,705 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 06:39:57,706 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 06:39:57,706 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 06:39:57,706 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 06:39:57,706 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 06:39:57,706 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 06:39:57,707 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 06:39:57,707 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 06:39:57,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 06:39:57,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 06:39:57,707 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 06:39:57,708 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 06:39:57,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 06:39:57,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 06:40:01,779 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 06:40:01,779 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 06:40:01,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:40:01 BoogieIcfgContainer [2020-10-13 06:40:01,805 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 06:40:01,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 06:40:01,809 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 06:40:01,815 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 06:40:01,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:39:54" (1/3) ... [2020-10-13 06:40:01,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f2da9bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:40:01, skipping insertion in model container [2020-10-13 06:40:01,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:39:57" (2/3) ... [2020-10-13 06:40:01,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f2da9bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:40:01, skipping insertion in model container [2020-10-13 06:40:01,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:40:01" (3/3) ... [2020-10-13 06:40:01,823 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label42.c [2020-10-13 06:40:01,846 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 06:40:01,863 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 06:40:01,878 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 06:40:01,914 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 06:40:01,914 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 06:40:01,914 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 06:40:01,914 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 06:40:01,915 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 06:40:01,915 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 06:40:01,915 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 06:40:01,915 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 06:40:01,950 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2020-10-13 06:40:01,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 827 [2020-10-13 06:40:01,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:40:01,991 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:40:01,992 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:40:01,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:40:01,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1829332667, now seen corresponding path program 1 times [2020-10-13 06:40:02,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:40:02,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453396445] [2020-10-13 06:40:02,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:40:02,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:40:02,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:04,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:07,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:40:07,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 840 [2020-10-13 06:40:07,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:40:07,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5079 [2020-10-13 06:40:07,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:40:07,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 06:40:07,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:40:07,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 742 [2020-10-13 06:40:07,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 06:40:10,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:40:10,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:40:10,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:10,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:40:10,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:40:10,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:40:10,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 06:40:10,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:40:10,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:40:10,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:40:10,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:40:10,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:40:14,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:40:14,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1453396445] [2020-10-13 06:40:14,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:40:14,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-13 06:40:14,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002459341] [2020-10-13 06:40:14,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 06:40:14,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:40:14,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 06:40:14,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2020-10-13 06:40:14,084 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 18 states. [2020-10-13 06:40:14,638 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-13 06:40:14,935 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-13 06:40:15,189 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-13 06:40:28,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:40:28,847 INFO L93 Difference]: Finished difference Result 2548 states and 4905 transitions. [2020-10-13 06:40:28,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 06:40:28,850 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 826 [2020-10-13 06:40:28,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:40:28,920 INFO L225 Difference]: With dead ends: 2548 [2020-10-13 06:40:28,921 INFO L226 Difference]: Without dead ends: 1580 [2020-10-13 06:40:28,940 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=186, Invalid=870, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 06:40:28,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2020-10-13 06:40:29,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 1580. [2020-10-13 06:40:29,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-10-13 06:40:29,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 2339 transitions. [2020-10-13 06:40:29,183 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 2339 transitions. Word has length 826 [2020-10-13 06:40:29,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:40:29,187 INFO L479 AbstractCegarLoop]: Abstraction has 1580 states and 2339 transitions. [2020-10-13 06:40:29,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 06:40:29,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 2339 transitions. [2020-10-13 06:40:29,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 846 [2020-10-13 06:40:29,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:40:29,251 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:40:29,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 06:40:29,252 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:40:29,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:40:29,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1538766732, now seen corresponding path program 1 times [2020-10-13 06:40:29,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:40:29,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [415982955] [2020-10-13 06:40:29,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:40:29,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:40:29,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:30,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:32,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:34,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:40:34,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 861 [2020-10-13 06:40:34,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:40:34,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-13 06:40:34,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:40:34,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-13 06:40:34,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 06:40:34,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 705 [2020-10-13 06:40:34,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:40:36,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:40:36,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:40:36,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:36,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:40:36,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:40:36,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:40:36,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:40:36,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:40:36,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:40:36,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:40:36,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:40:36,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:40:36,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:40:36,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:40:36,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:36,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:40:36,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:40:36,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:40:36,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 06:40:36,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:40:36,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:40:36,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:40:36,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 06:40:36,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:40:40,335 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:40:40,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [415982955] [2020-10-13 06:40:40,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:40:40,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 06:40:40,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20730233] [2020-10-13 06:40:40,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 06:40:40,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:40:40,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 06:40:40,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-10-13 06:40:40,340 INFO L87 Difference]: Start difference. First operand 1580 states and 2339 transitions. Second operand 19 states. [2020-10-13 06:40:40,746 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-13 06:40:41,045 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-13 06:40:43,329 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-13 06:40:44,226 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-13 06:40:55,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:40:55,572 INFO L93 Difference]: Finished difference Result 3123 states and 5328 transitions. [2020-10-13 06:40:55,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 06:40:55,574 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 845 [2020-10-13 06:40:55,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:40:55,588 INFO L225 Difference]: With dead ends: 3123 [2020-10-13 06:40:55,588 INFO L226 Difference]: Without dead ends: 2276 [2020-10-13 06:40:55,592 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=179, Invalid=813, Unknown=0, NotChecked=0, Total=992 [2020-10-13 06:40:55,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2276 states. [2020-10-13 06:40:55,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2276 to 2276. [2020-10-13 06:40:55,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2276 states. [2020-10-13 06:40:55,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2276 states to 2276 states and 3045 transitions. [2020-10-13 06:40:55,652 INFO L78 Accepts]: Start accepts. Automaton has 2276 states and 3045 transitions. Word has length 845 [2020-10-13 06:40:55,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:40:55,653 INFO L479 AbstractCegarLoop]: Abstraction has 2276 states and 3045 transitions. [2020-10-13 06:40:55,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 06:40:55,654 INFO L276 IsEmpty]: Start isEmpty. Operand 2276 states and 3045 transitions. [2020-10-13 06:40:55,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 853 [2020-10-13 06:40:55,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:40:55,686 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:40:55,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 06:40:55,686 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:40:55,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:40:55,687 INFO L82 PathProgramCache]: Analyzing trace with hash -298489754, now seen corresponding path program 1 times [2020-10-13 06:40:55,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:40:55,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1812259144] [2020-10-13 06:40:55,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:40:55,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:40:56,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:56,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:56,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:00,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:41:00,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 868 [2020-10-13 06:41:00,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:41:00,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5075 [2020-10-13 06:41:00,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:41:00,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 06:41:00,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 06:41:00,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 517 [2020-10-13 06:41:00,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:41:02,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:41:02,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:41:02,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:02,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:41:02,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:41:02,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:41:02,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:41:02,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:41:02,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:41:02,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:41:02,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:41:02,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:41:02,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:41:02,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:41:02,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:02,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:41:02,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-13 06:41:02,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:41:02,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 06:41:02,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:41:02,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:41:02,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:41:02,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 06:41:02,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:41:06,086 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:41:06,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1812259144] [2020-10-13 06:41:06,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:41:06,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 06:41:06,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400684243] [2020-10-13 06:41:06,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 06:41:06,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:41:06,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 06:41:06,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-10-13 06:41:06,090 INFO L87 Difference]: Start difference. First operand 2276 states and 3045 transitions. Second operand 17 states. [2020-10-13 06:41:06,742 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-13 06:41:11,663 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 94 [2020-10-13 06:41:12,615 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-10-13 06:41:12,868 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 92 [2020-10-13 06:41:13,138 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 91 [2020-10-13 06:41:13,638 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 90 [2020-10-13 06:41:15,011 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2020-10-13 06:41:19,130 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2020-10-13 06:41:19,553 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-10-13 06:41:19,738 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-10-13 06:41:25,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:41:25,479 INFO L93 Difference]: Finished difference Result 4329 states and 6367 transitions. [2020-10-13 06:41:25,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 06:41:25,486 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 852 [2020-10-13 06:41:25,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:41:25,500 INFO L225 Difference]: With dead ends: 4329 [2020-10-13 06:41:25,500 INFO L226 Difference]: Without dead ends: 2786 [2020-10-13 06:41:25,504 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=155, Invalid=657, Unknown=0, NotChecked=0, Total=812 [2020-10-13 06:41:25,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2020-10-13 06:41:25,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 2786. [2020-10-13 06:41:25,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2786 states. [2020-10-13 06:41:25,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2786 states to 2786 states and 3564 transitions. [2020-10-13 06:41:25,571 INFO L78 Accepts]: Start accepts. Automaton has 2786 states and 3564 transitions. Word has length 852 [2020-10-13 06:41:25,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:41:25,572 INFO L479 AbstractCegarLoop]: Abstraction has 2786 states and 3564 transitions. [2020-10-13 06:41:25,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 06:41:25,572 INFO L276 IsEmpty]: Start isEmpty. Operand 2786 states and 3564 transitions. [2020-10-13 06:41:25,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 863 [2020-10-13 06:41:25,585 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:41:25,585 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:41:25,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 06:41:25,586 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:41:25,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:41:25,586 INFO L82 PathProgramCache]: Analyzing trace with hash -808373601, now seen corresponding path program 1 times [2020-10-13 06:41:25,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:41:25,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600564641] [2020-10-13 06:41:25,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:41:25,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:41:25,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:27,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:27,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:30,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:41:30,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 880 [2020-10-13 06:41:30,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:41:30,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-13 06:41:30,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:41:30,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 06:41:30,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 06:41:30,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 831 [2020-10-13 06:41:30,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:41:31,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:41:31,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:41:31,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:31,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:41:31,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:41:31,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:41:31,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:41:31,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:41:31,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:41:31,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:41:31,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:41:31,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:41:31,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:41:31,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:41:31,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:31,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:41:31,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:41:31,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:41:31,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:41:31,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:41:31,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:41:31,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:41:31,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:41:31,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:41:31,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:41:31,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:41:31,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:31,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:41:31,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 06:41:31,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:41:31,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 06:41:31,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:41:31,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:41:31,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:41:31,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:41:31,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:41:31,859 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-13 06:41:31,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600564641] [2020-10-13 06:41:31,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:41:31,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:41:31,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138728597] [2020-10-13 06:41:31,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:41:31,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:41:31,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:41:31,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:41:31,861 INFO L87 Difference]: Start difference. First operand 2786 states and 3564 transitions. Second operand 5 states. [2020-10-13 06:41:41,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:41:41,227 INFO L93 Difference]: Finished difference Result 5684 states and 8005 transitions. [2020-10-13 06:41:41,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:41:41,228 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 862 [2020-10-13 06:41:41,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:41:41,245 INFO L225 Difference]: With dead ends: 5684 [2020-10-13 06:41:41,245 INFO L226 Difference]: Without dead ends: 3631 [2020-10-13 06:41:41,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:41:41,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3631 states. [2020-10-13 06:41:41,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3631 to 3631. [2020-10-13 06:41:41,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3631 states. [2020-10-13 06:41:41,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3631 states to 3631 states and 4725 transitions. [2020-10-13 06:41:41,333 INFO L78 Accepts]: Start accepts. Automaton has 3631 states and 4725 transitions. Word has length 862 [2020-10-13 06:41:41,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:41:41,334 INFO L479 AbstractCegarLoop]: Abstraction has 3631 states and 4725 transitions. [2020-10-13 06:41:41,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:41:41,335 INFO L276 IsEmpty]: Start isEmpty. Operand 3631 states and 4725 transitions. [2020-10-13 06:41:41,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 913 [2020-10-13 06:41:41,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:41:41,352 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:41:41,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 06:41:41,352 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:41:41,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:41:41,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1984618982, now seen corresponding path program 1 times [2020-10-13 06:41:41,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:41:41,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1882258103] [2020-10-13 06:41:41,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:41:41,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:41:41,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:41,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:46,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:41:46,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 932 [2020-10-13 06:41:46,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:41:46,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 06:41:46,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:41:46,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:41:46,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 06:41:46,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 06:41:46,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:41:46,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:41:46,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:41:46,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:46,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:41:46,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:41:46,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:41:46,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:41:46,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:41:46,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:41:46,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:41:46,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:41:46,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:41:46,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:41:46,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:41:46,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:46,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:41:46,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:41:46,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:41:46,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:41:46,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:41:46,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:41:46,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:41:46,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:41:46,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:41:46,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:41:46,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:41:46,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:46,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:41:46,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 06:41:46,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:41:46,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 06:41:46,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:41:46,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:41:46,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:41:46,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:41:46,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:41:46,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 06:41:46,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:41:46,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:46,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:41:46,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 06:41:46,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:41:46,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-13 06:41:46,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:41:46,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:41:46,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:41:46,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 06:41:46,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:41:47,199 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 112 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-13 06:41:47,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1882258103] [2020-10-13 06:41:47,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:41:47,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:41:47,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68620365] [2020-10-13 06:41:47,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:41:47,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:41:47,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:41:47,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:41:47,202 INFO L87 Difference]: Start difference. First operand 3631 states and 4725 transitions. Second operand 7 states. [2020-10-13 06:41:59,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:41:59,386 INFO L93 Difference]: Finished difference Result 8357 states and 11810 transitions. [2020-10-13 06:41:59,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:41:59,387 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 912 [2020-10-13 06:41:59,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:41:59,416 INFO L225 Difference]: With dead ends: 8357 [2020-10-13 06:41:59,417 INFO L226 Difference]: Without dead ends: 5459 [2020-10-13 06:41:59,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:41:59,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5459 states. [2020-10-13 06:41:59,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5459 to 5387. [2020-10-13 06:41:59,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5387 states. [2020-10-13 06:41:59,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5387 states to 5387 states and 6816 transitions. [2020-10-13 06:41:59,572 INFO L78 Accepts]: Start accepts. Automaton has 5387 states and 6816 transitions. Word has length 912 [2020-10-13 06:41:59,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:41:59,573 INFO L479 AbstractCegarLoop]: Abstraction has 5387 states and 6816 transitions. [2020-10-13 06:41:59,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:41:59,573 INFO L276 IsEmpty]: Start isEmpty. Operand 5387 states and 6816 transitions. [2020-10-13 06:41:59,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 916 [2020-10-13 06:41:59,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:41:59,597 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:41:59,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 06:41:59,597 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:41:59,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:41:59,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1786239452, now seen corresponding path program 1 times [2020-10-13 06:41:59,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:41:59,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [434975983] [2020-10-13 06:41:59,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:41:59,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:41:59,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:59,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:59,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:00,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:04,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:04,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 935 [2020-10-13 06:42:04,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:42:04,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 06:42:04,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:04,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:42:04,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 06:42:04,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 06:42:04,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:04,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:42:04,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:04,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:04,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:04,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:42:04,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:42:04,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:42:04,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:04,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:42:04,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:42:04,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:42:04,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:04,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:42:04,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:04,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:04,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:04,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:42:04,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:42:04,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:42:04,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:04,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:42:04,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:42:04,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:42:04,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:04,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:42:04,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:04,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:04,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:04,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 06:42:04,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:42:04,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 06:42:04,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:04,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:42:04,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:42:04,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:42:04,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:04,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 06:42:04,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:04,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:05,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:05,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-13 06:42:05,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:42:05,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 06:42:05,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:05,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:42:05,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:42:05,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 06:42:05,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:05,429 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-13 06:42:05,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [434975983] [2020-10-13 06:42:05,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:42:05,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:42:05,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331191507] [2020-10-13 06:42:05,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:42:05,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:42:05,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:42:05,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:42:05,432 INFO L87 Difference]: Start difference. First operand 5387 states and 6816 transitions. Second operand 7 states. [2020-10-13 06:42:16,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:42:16,713 INFO L93 Difference]: Finished difference Result 13774 states and 18378 transitions. [2020-10-13 06:42:16,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:42:16,715 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 915 [2020-10-13 06:42:16,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:42:16,750 INFO L225 Difference]: With dead ends: 13774 [2020-10-13 06:42:16,751 INFO L226 Difference]: Without dead ends: 9120 [2020-10-13 06:42:16,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:42:16,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9120 states. [2020-10-13 06:42:16,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9120 to 8951. [2020-10-13 06:42:16,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8951 states. [2020-10-13 06:42:16,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8951 states to 8951 states and 11077 transitions. [2020-10-13 06:42:16,981 INFO L78 Accepts]: Start accepts. Automaton has 8951 states and 11077 transitions. Word has length 915 [2020-10-13 06:42:16,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:42:16,982 INFO L479 AbstractCegarLoop]: Abstraction has 8951 states and 11077 transitions. [2020-10-13 06:42:16,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:42:16,982 INFO L276 IsEmpty]: Start isEmpty. Operand 8951 states and 11077 transitions. [2020-10-13 06:42:17,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1003 [2020-10-13 06:42:17,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:42:17,021 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:42:17,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 06:42:17,022 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:42:17,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:42:17,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1315624538, now seen corresponding path program 1 times [2020-10-13 06:42:17,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:42:17,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999625814] [2020-10-13 06:42:17,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:42:17,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:17,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:17,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:18,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:20,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:22,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:22,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1022 [2020-10-13 06:42:22,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:42:22,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-13 06:42:22,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:22,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:42:22,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 06:42:22,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-13 06:42:22,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:22,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:42:22,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:22,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:22,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:22,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:42:22,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:42:22,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:42:22,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:22,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:42:22,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:42:22,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:42:22,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:22,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:42:22,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:22,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:22,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:22,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:42:22,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:42:22,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:42:22,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:22,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:42:22,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:42:22,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:42:22,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:22,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:42:22,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:22,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:22,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:22,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 06:42:22,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:42:22,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:42:22,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:22,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:42:22,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:42:22,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:42:22,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:22,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 06:42:22,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:22,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:22,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:22,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-13 06:42:22,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:42:22,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-13 06:42:22,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:22,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:42:22,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:42:22,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-13 06:42:22,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:23,120 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 202 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-13 06:42:23,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999625814] [2020-10-13 06:42:23,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:42:23,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:42:23,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174421909] [2020-10-13 06:42:23,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:42:23,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:42:23,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:42:23,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:42:23,123 INFO L87 Difference]: Start difference. First operand 8951 states and 11077 transitions. Second operand 7 states. [2020-10-13 06:42:43,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:42:43,865 INFO L93 Difference]: Finished difference Result 31702 states and 42233 transitions. [2020-10-13 06:42:43,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:42:43,866 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1002 [2020-10-13 06:42:43,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:42:43,946 INFO L225 Difference]: With dead ends: 31702 [2020-10-13 06:42:43,946 INFO L226 Difference]: Without dead ends: 23484 [2020-10-13 06:42:43,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:42:43,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23484 states. [2020-10-13 06:42:44,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23484 to 23256. [2020-10-13 06:42:44,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23256 states. [2020-10-13 06:42:44,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23256 states to 23256 states and 29066 transitions. [2020-10-13 06:42:44,501 INFO L78 Accepts]: Start accepts. Automaton has 23256 states and 29066 transitions. Word has length 1002 [2020-10-13 06:42:44,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:42:44,501 INFO L479 AbstractCegarLoop]: Abstraction has 23256 states and 29066 transitions. [2020-10-13 06:42:44,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:42:44,502 INFO L276 IsEmpty]: Start isEmpty. Operand 23256 states and 29066 transitions. [2020-10-13 06:42:44,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1029 [2020-10-13 06:42:44,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:42:44,567 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:42:44,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 06:42:44,568 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:42:44,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:42:44,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1358687026, now seen corresponding path program 1 times [2020-10-13 06:42:44,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:42:44,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [47566459] [2020-10-13 06:42:44,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:42:44,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:44,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:45,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:46,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:49,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:49,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1048 [2020-10-13 06:42:49,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:42:49,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-13 06:42:49,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:49,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:42:49,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 156 [2020-10-13 06:42:49,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 06:42:49,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:49,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:42:49,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:49,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:49,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:49,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:42:49,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:42:49,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 06:42:49,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:49,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:42:49,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:42:49,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:42:49,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:49,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:42:49,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:49,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:49,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:49,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:42:49,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:42:49,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:42:49,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:49,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:42:49,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:42:49,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:42:49,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:49,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:42:49,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:49,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:50,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:50,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 06:42:50,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:42:50,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-13 06:42:50,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:50,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:42:50,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:42:50,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-13 06:42:50,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:50,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-13 06:42:50,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:50,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:50,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:50,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 06:42:50,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:42:50,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 06:42:50,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:50,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:42:50,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:42:50,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 06:42:50,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:50,543 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 269 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 06:42:50,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [47566459] [2020-10-13 06:42:50,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:42:50,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:42:50,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96646962] [2020-10-13 06:42:50,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:42:50,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:42:50,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:42:50,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:42:50,546 INFO L87 Difference]: Start difference. First operand 23256 states and 29066 transitions. Second operand 7 states. [2020-10-13 06:43:02,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:43:02,428 INFO L93 Difference]: Finished difference Result 56277 states and 74398 transitions. [2020-10-13 06:43:02,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 06:43:02,430 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1028 [2020-10-13 06:43:02,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:43:02,570 INFO L225 Difference]: With dead ends: 56277 [2020-10-13 06:43:02,571 INFO L226 Difference]: Without dead ends: 33754 [2020-10-13 06:43:02,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:43:02,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33754 states. [2020-10-13 06:43:03,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33754 to 33590. [2020-10-13 06:43:03,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33590 states. [2020-10-13 06:43:03,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33590 states to 33590 states and 42840 transitions. [2020-10-13 06:43:03,348 INFO L78 Accepts]: Start accepts. Automaton has 33590 states and 42840 transitions. Word has length 1028 [2020-10-13 06:43:03,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:43:03,349 INFO L479 AbstractCegarLoop]: Abstraction has 33590 states and 42840 transitions. [2020-10-13 06:43:03,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:43:03,349 INFO L276 IsEmpty]: Start isEmpty. Operand 33590 states and 42840 transitions. [2020-10-13 06:43:03,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1088 [2020-10-13 06:43:03,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:43:03,413 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:43:03,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 06:43:03,414 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:43:03,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:43:03,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1207622780, now seen corresponding path program 1 times [2020-10-13 06:43:03,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:43:03,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1106876220] [2020-10-13 06:43:03,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:43:03,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:43:03,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:03,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:04,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:08,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:43:08,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1107 [2020-10-13 06:43:08,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:43:08,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-13 06:43:08,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:43:08,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:43:08,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 156 [2020-10-13 06:43:08,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-13 06:43:08,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:43:08,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:43:08,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:43:08,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:08,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:43:08,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:43:08,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:43:08,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 06:43:08,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:43:08,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:43:08,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:43:08,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:43:08,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:43:08,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:43:08,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:43:08,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:08,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:43:08,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:43:08,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:43:08,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:43:08,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:43:08,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:43:08,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:43:08,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:43:08,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:43:08,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:43:08,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:43:08,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:08,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:43:08,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 06:43:08,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:43:08,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 06:43:08,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:43:08,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:43:08,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:43:08,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-13 06:43:08,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:43:08,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-13 06:43:08,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:43:08,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:09,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:43:09,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 06:43:09,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:43:09,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-13 06:43:09,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:43:09,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:43:09,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:43:09,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-13 06:43:09,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:43:09,646 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 387 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 06:43:09,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1106876220] [2020-10-13 06:43:09,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:43:09,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:43:09,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582976754] [2020-10-13 06:43:09,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:43:09,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:43:09,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:43:09,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:43:09,649 INFO L87 Difference]: Start difference. First operand 33590 states and 42840 transitions. Second operand 7 states. [2020-10-13 06:43:21,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:43:21,522 INFO L93 Difference]: Finished difference Result 86081 states and 113198 transitions. [2020-10-13 06:43:21,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 06:43:21,523 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1087 [2020-10-13 06:43:21,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:43:21,738 INFO L225 Difference]: With dead ends: 86081 [2020-10-13 06:43:21,738 INFO L226 Difference]: Without dead ends: 53224 [2020-10-13 06:43:21,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:43:21,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53224 states. [2020-10-13 06:43:22,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53224 to 50560. [2020-10-13 06:43:22,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50560 states. [2020-10-13 06:43:22,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50560 states to 50560 states and 61241 transitions. [2020-10-13 06:43:22,700 INFO L78 Accepts]: Start accepts. Automaton has 50560 states and 61241 transitions. Word has length 1087 [2020-10-13 06:43:22,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:43:22,700 INFO L479 AbstractCegarLoop]: Abstraction has 50560 states and 61241 transitions. [2020-10-13 06:43:22,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:43:22,701 INFO L276 IsEmpty]: Start isEmpty. Operand 50560 states and 61241 transitions. [2020-10-13 06:43:22,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1158 [2020-10-13 06:43:22,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:43:22,754 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:43:22,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 06:43:22,754 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:43:22,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:43:22,755 INFO L82 PathProgramCache]: Analyzing trace with hash 2130320911, now seen corresponding path program 1 times [2020-10-13 06:43:22,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:43:22,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589227172] [2020-10-13 06:43:22,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:43:22,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:43:23,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:23,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:23,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:27,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:43:27,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1179 [2020-10-13 06:43:27,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:43:27,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 06:43:27,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:43:27,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:43:27,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-13 06:43:27,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 06:43:27,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:43:28,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:43:28,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:43:28,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:28,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:43:28,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:43:28,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:43:28,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:43:28,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:43:28,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:43:28,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:43:28,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:43:28,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:43:28,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:43:28,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:43:28,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:28,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:43:28,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:43:28,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:43:28,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:43:28,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:43:28,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:43:28,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:43:28,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:43:28,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:43:28,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:43:28,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:43:28,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:28,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:43:28,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 06:43:28,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:43:28,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 06:43:28,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:43:28,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:43:28,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:43:28,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:43:28,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:43:28,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-13 06:43:28,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:43:28,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:28,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:43:28,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 06:43:28,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:43:28,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-13 06:43:28,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:43:28,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:43:28,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:43:28,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-13 06:43:28,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:43:28,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-10-13 06:43:28,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:43:28,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:28,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:43:28,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 06:43:28,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:43:28,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 06:43:28,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:43:28,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:43:28,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:43:28,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 06:43:28,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:43:29,126 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 487 proven. 2 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2020-10-13 06:43:29,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589227172] [2020-10-13 06:43:29,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:43:29,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 06:43:29,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275942343] [2020-10-13 06:43:29,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:43:29,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:43:29,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:43:29,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:43:29,129 INFO L87 Difference]: Start difference. First operand 50560 states and 61241 transitions. Second operand 8 states.