/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/systemc/toy.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 15:50:48,831 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 15:50:48,834 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 15:50:48,858 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 15:50:48,858 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 15:50:48,859 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 15:50:48,861 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 15:50:48,862 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 15:50:48,864 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 15:50:48,865 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 15:50:48,866 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 15:50:48,867 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 15:50:48,867 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 15:50:48,868 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 15:50:48,869 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 15:50:48,870 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 15:50:48,871 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 15:50:48,872 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 15:50:48,874 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 15:50:48,876 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 15:50:48,877 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 15:50:48,879 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 15:50:48,880 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 15:50:48,881 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 15:50:48,883 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 15:50:48,884 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 15:50:48,886 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 15:50:48,887 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 15:50:48,887 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 15:50:48,888 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 15:50:48,889 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 15:50:48,892 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 15:50:48,893 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 15:50:48,894 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 15:50:48,895 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 15:50:48,895 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 15:50:48,896 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 15:50:48,896 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 15:50:48,896 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 15:50:48,897 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 15:50:48,898 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 15:50:48,899 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 15:50:48,924 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 15:50:48,924 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 15:50:48,926 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 15:50:48,926 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 15:50:48,926 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 15:50:48,926 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 15:50:48,926 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 15:50:48,927 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 15:50:48,927 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 15:50:48,927 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 15:50:48,927 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 15:50:48,927 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 15:50:48,928 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 15:50:48,928 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 15:50:48,928 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 15:50:48,928 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 15:50:48,928 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 15:50:48,929 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 15:50:48,929 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 15:50:48,929 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 15:50:48,929 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 15:50:48,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 15:50:48,930 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 15:50:48,930 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 15:50:48,930 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 15:50:48,930 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 15:50:48,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 15:50:48,931 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 15:50:48,931 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 15:50:48,931 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 15:50:49,244 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 15:50:49,256 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 15:50:49,260 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 15:50:49,261 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 15:50:49,262 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 15:50:49,263 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/toy.cil.c [2020-10-13 15:50:49,340 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/be8ab5a2a/7f6dc861fbb145fdafc8f1a17c7eb3e4/FLAGb6bc41c56 [2020-10-13 15:50:49,802 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 15:50:49,803 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/toy.cil.c [2020-10-13 15:50:49,814 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/be8ab5a2a/7f6dc861fbb145fdafc8f1a17c7eb3e4/FLAGb6bc41c56 [2020-10-13 15:50:50,209 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/be8ab5a2a/7f6dc861fbb145fdafc8f1a17c7eb3e4 [2020-10-13 15:50:50,217 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 15:50:50,218 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 15:50:50,220 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 15:50:50,220 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 15:50:50,225 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 15:50:50,226 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:50:50" (1/1) ... [2020-10-13 15:50:50,229 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11967da3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:50:50, skipping insertion in model container [2020-10-13 15:50:50,230 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:50:50" (1/1) ... [2020-10-13 15:50:50,238 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 15:50:50,284 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 15:50:50,515 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:50:50,521 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 15:50:50,660 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:50:50,678 INFO L208 MainTranslator]: Completed translation [2020-10-13 15:50:50,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:50:50 WrapperNode [2020-10-13 15:50:50,679 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 15:50:50,680 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 15:50:50,680 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 15:50:50,680 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 15:50:50,694 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:50:50" (1/1) ... [2020-10-13 15:50:50,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:50:50" (1/1) ... [2020-10-13 15:50:50,702 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:50:50" (1/1) ... [2020-10-13 15:50:50,702 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:50:50" (1/1) ... [2020-10-13 15:50:50,713 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:50:50" (1/1) ... [2020-10-13 15:50:50,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:50:50" (1/1) ... [2020-10-13 15:50:50,731 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:50:50" (1/1) ... [2020-10-13 15:50:50,736 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 15:50:50,737 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 15:50:50,737 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 15:50:50,737 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 15:50:50,738 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:50:50" (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 15:50:50,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 15:50:50,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 15:50:50,808 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-10-13 15:50:50,808 INFO L138 BoogieDeclarations]: Found implementation of procedure write_loop [2020-10-13 15:50:50,808 INFO L138 BoogieDeclarations]: Found implementation of procedure compute1 [2020-10-13 15:50:50,808 INFO L138 BoogieDeclarations]: Found implementation of procedure compute2 [2020-10-13 15:50:50,808 INFO L138 BoogieDeclarations]: Found implementation of procedure write_back [2020-10-13 15:50:50,809 INFO L138 BoogieDeclarations]: Found implementation of procedure read [2020-10-13 15:50:50,809 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-10-13 15:50:50,809 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-10-13 15:50:50,809 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 15:50:50,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 15:50:50,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 15:50:50,810 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-10-13 15:50:50,810 INFO L130 BoogieDeclarations]: Found specification of procedure write_loop [2020-10-13 15:50:50,810 INFO L130 BoogieDeclarations]: Found specification of procedure compute1 [2020-10-13 15:50:50,810 INFO L130 BoogieDeclarations]: Found specification of procedure compute2 [2020-10-13 15:50:50,810 INFO L130 BoogieDeclarations]: Found specification of procedure write_back [2020-10-13 15:50:50,810 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 15:50:50,811 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-10-13 15:50:50,811 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-10-13 15:50:50,811 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 15:50:50,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 15:50:50,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 15:50:51,421 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 15:50:51,422 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-13 15:50:51,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:50:51 BoogieIcfgContainer [2020-10-13 15:50:51,432 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 15:50:51,435 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 15:50:51,435 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 15:50:51,439 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 15:50:51,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 03:50:50" (1/3) ... [2020-10-13 15:50:51,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@496a0be8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:50:51, skipping insertion in model container [2020-10-13 15:50:51,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:50:50" (2/3) ... [2020-10-13 15:50:51,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@496a0be8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:50:51, skipping insertion in model container [2020-10-13 15:50:51,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:50:51" (3/3) ... [2020-10-13 15:50:51,444 INFO L109 eAbstractionObserver]: Analyzing ICFG toy.cil.c [2020-10-13 15:50:51,456 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 15:50:51,470 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 15:50:51,486 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 15:50:51,523 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 15:50:51,523 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 15:50:51,523 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 15:50:51,524 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 15:50:51,524 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 15:50:51,524 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 15:50:51,524 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 15:50:51,525 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 15:50:51,553 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states. [2020-10-13 15:50:51,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-13 15:50:51,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:50:51,575 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] [2020-10-13 15:50:51,575 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:50:51,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:50:51,580 INFO L82 PathProgramCache]: Analyzing trace with hash -2004131150, now seen corresponding path program 1 times [2020-10-13 15:50:51,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:50:51,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2117360274] [2020-10-13 15:50:51,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:50:51,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:50:51,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:52,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:52,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:52,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:52,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:52,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:52,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:52,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:52,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:53,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:54,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:56,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:50:56,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 15:50:56,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 15:50:56,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4262 [2020-10-13 15:50:56,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:50:56,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:50:56,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:50:56,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:50:56,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 15:50:56,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:50:56,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:50:56,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:56,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:50:56,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:50:56,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:50:56,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 15:50:56,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:50:56,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:50:56,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:50:56,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:50:56,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 15:50:56,305 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 15:50:56,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2117360274] [2020-10-13 15:50:56,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:50:56,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:50:56,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185385814] [2020-10-13 15:50:56,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:50:56,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:50:56,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:50:56,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:50:56,334 INFO L87 Difference]: Start difference. First operand 159 states. Second operand 4 states. [2020-10-13 15:50:57,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:50:57,443 INFO L93 Difference]: Finished difference Result 326 states and 563 transitions. [2020-10-13 15:50:57,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:50:57,445 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-13 15:50:57,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:50:57,469 INFO L225 Difference]: With dead ends: 326 [2020-10-13 15:50:57,469 INFO L226 Difference]: Without dead ends: 176 [2020-10-13 15:50:57,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:50:57,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-13 15:50:57,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 150. [2020-10-13 15:50:57,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-13 15:50:57,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 243 transitions. [2020-10-13 15:50:57,577 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 243 transitions. Word has length 47 [2020-10-13 15:50:57,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:50:57,577 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 243 transitions. [2020-10-13 15:50:57,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:50:57,578 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 243 transitions. [2020-10-13 15:50:57,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-13 15:50:57,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:50:57,582 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] [2020-10-13 15:50:57,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 15:50:57,583 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:50:57,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:50:57,584 INFO L82 PathProgramCache]: Analyzing trace with hash 46852848, now seen corresponding path program 1 times [2020-10-13 15:50:57,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:50:57,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1831521460] [2020-10-13 15:50:57,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:50:57,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:50:57,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:57,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:57,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:57,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:57,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:57,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:57,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:58,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:58,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:59,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:01,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:01,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 15:51:01,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 15:51:01,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3529 [2020-10-13 15:51:01,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:01,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:51:01,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:51:01,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:51:01,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 15:51:01,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:51:01,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:01,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:01,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:01,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:51:01,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:01,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:51:01,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:01,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:01,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:51:01,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:01,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:01,309 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 15:51:01,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1831521460] [2020-10-13 15:51:01,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:51:01,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:51:01,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308596907] [2020-10-13 15:51:01,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:51:01,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:51:01,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:51:01,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:51:01,317 INFO L87 Difference]: Start difference. First operand 150 states and 243 transitions. Second operand 4 states. [2020-10-13 15:51:01,441 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-13 15:51:02,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:51:02,003 INFO L93 Difference]: Finished difference Result 309 states and 504 transitions. [2020-10-13 15:51:02,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:51:02,003 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-13 15:51:02,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:51:02,006 INFO L225 Difference]: With dead ends: 309 [2020-10-13 15:51:02,006 INFO L226 Difference]: Without dead ends: 176 [2020-10-13 15:51:02,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:51:02,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-13 15:51:02,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 150. [2020-10-13 15:51:02,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-13 15:51:02,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 235 transitions. [2020-10-13 15:51:02,027 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 235 transitions. Word has length 47 [2020-10-13 15:51:02,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:51:02,027 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 235 transitions. [2020-10-13 15:51:02,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:51:02,028 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 235 transitions. [2020-10-13 15:51:02,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-13 15:51:02,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:51:02,030 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] [2020-10-13 15:51:02,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 15:51:02,030 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:51:02,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:51:02,030 INFO L82 PathProgramCache]: Analyzing trace with hash -25533710, now seen corresponding path program 1 times [2020-10-13 15:51:02,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:51:02,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [655779588] [2020-10-13 15:51:02,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:51:02,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:02,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:02,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:02,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:02,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:02,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:02,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:02,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:02,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:03,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:03,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 15:51:03,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 15:51:03,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1537 [2020-10-13 15:51:03,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:03,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:51:03,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:51:03,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:51:03,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:03,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:51:03,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:03,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:03,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:03,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:51:03,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:03,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:51:03,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:03,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:03,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:51:03,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:03,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:03,707 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 15:51:03,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [655779588] [2020-10-13 15:51:03,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:51:03,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:51:03,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838930135] [2020-10-13 15:51:03,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:51:03,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:51:03,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:51:03,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:51:03,710 INFO L87 Difference]: Start difference. First operand 150 states and 235 transitions. Second operand 4 states. [2020-10-13 15:51:04,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:51:04,319 INFO L93 Difference]: Finished difference Result 307 states and 485 transitions. [2020-10-13 15:51:04,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:51:04,320 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-13 15:51:04,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:51:04,322 INFO L225 Difference]: With dead ends: 307 [2020-10-13 15:51:04,322 INFO L226 Difference]: Without dead ends: 176 [2020-10-13 15:51:04,323 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:51:04,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-13 15:51:04,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 150. [2020-10-13 15:51:04,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-13 15:51:04,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 229 transitions. [2020-10-13 15:51:04,360 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 229 transitions. Word has length 47 [2020-10-13 15:51:04,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:51:04,360 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 229 transitions. [2020-10-13 15:51:04,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:51:04,360 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 229 transitions. [2020-10-13 15:51:04,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-13 15:51:04,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:51:04,363 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] [2020-10-13 15:51:04,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 15:51:04,366 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:51:04,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:51:04,367 INFO L82 PathProgramCache]: Analyzing trace with hash 894920882, now seen corresponding path program 1 times [2020-10-13 15:51:04,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:51:04,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1082975656] [2020-10-13 15:51:04,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:51:04,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:04,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:04,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:04,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:04,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:04,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:04,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:04,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:05,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:05,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 15:51:05,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:51:05,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1049 [2020-10-13 15:51:05,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:05,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:51:05,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:51:05,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 15:51:05,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:05,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:51:05,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:05,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:05,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:05,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:51:05,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:05,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 15:51:05,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:05,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:05,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:51:05,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:05,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:05,561 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 15:51:05,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1082975656] [2020-10-13 15:51:05,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:51:05,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:51:05,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355037365] [2020-10-13 15:51:05,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:51:05,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:51:05,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:51:05,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:51:05,564 INFO L87 Difference]: Start difference. First operand 150 states and 229 transitions. Second operand 4 states. [2020-10-13 15:51:06,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:51:06,333 INFO L93 Difference]: Finished difference Result 469 states and 727 transitions. [2020-10-13 15:51:06,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:51:06,334 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-13 15:51:06,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:51:06,337 INFO L225 Difference]: With dead ends: 469 [2020-10-13 15:51:06,337 INFO L226 Difference]: Without dead ends: 339 [2020-10-13 15:51:06,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:51:06,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2020-10-13 15:51:06,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 287. [2020-10-13 15:51:06,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-10-13 15:51:06,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 438 transitions. [2020-10-13 15:51:06,372 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 438 transitions. Word has length 47 [2020-10-13 15:51:06,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:51:06,372 INFO L479 AbstractCegarLoop]: Abstraction has 287 states and 438 transitions. [2020-10-13 15:51:06,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:51:06,372 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 438 transitions. [2020-10-13 15:51:06,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-13 15:51:06,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:51:06,374 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] [2020-10-13 15:51:06,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 15:51:06,375 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:51:06,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:51:06,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1718138356, now seen corresponding path program 1 times [2020-10-13 15:51:06,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:51:06,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1107816034] [2020-10-13 15:51:06,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:51:06,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:06,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:06,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:06,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:06,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:06,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:06,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:07,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:07,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 15:51:07,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:51:07,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 714 [2020-10-13 15:51:07,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:07,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:51:07,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:51:07,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 15:51:07,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:07,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:51:07,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:07,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:07,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:07,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:51:07,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:07,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:51:07,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:07,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:07,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:51:07,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:07,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:07,204 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 15:51:07,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1107816034] [2020-10-13 15:51:07,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:51:07,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:51:07,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442365838] [2020-10-13 15:51:07,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:51:07,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:51:07,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:51:07,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:51:07,206 INFO L87 Difference]: Start difference. First operand 287 states and 438 transitions. Second operand 4 states. [2020-10-13 15:51:08,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:51:08,104 INFO L93 Difference]: Finished difference Result 862 states and 1334 transitions. [2020-10-13 15:51:08,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:51:08,105 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-13 15:51:08,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:51:08,115 INFO L225 Difference]: With dead ends: 862 [2020-10-13 15:51:08,115 INFO L226 Difference]: Without dead ends: 607 [2020-10-13 15:51:08,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:51:08,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2020-10-13 15:51:08,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 541. [2020-10-13 15:51:08,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 541 states. [2020-10-13 15:51:08,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 829 transitions. [2020-10-13 15:51:08,191 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 829 transitions. Word has length 47 [2020-10-13 15:51:08,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:51:08,192 INFO L479 AbstractCegarLoop]: Abstraction has 541 states and 829 transitions. [2020-10-13 15:51:08,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:51:08,193 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 829 transitions. [2020-10-13 15:51:08,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-13 15:51:08,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:51:08,204 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] [2020-10-13 15:51:08,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 15:51:08,205 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:51:08,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:51:08,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1760126211, now seen corresponding path program 1 times [2020-10-13 15:51:08,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:51:08,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1936040916] [2020-10-13 15:51:08,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:51:08,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:08,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:08,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:08,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:08,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:09,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:09,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 15:51:09,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:51:09,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 907 [2020-10-13 15:51:09,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:09,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:51:09,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:51:09,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 15:51:09,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:09,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:51:09,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:09,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:09,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:09,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:51:09,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:09,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:51:09,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:09,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:09,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:51:09,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:09,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:51:09,264 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 15:51:09,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1936040916] [2020-10-13 15:51:09,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:51:09,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:51:09,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050978032] [2020-10-13 15:51:09,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:51:09,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:51:09,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:51:09,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:51:09,267 INFO L87 Difference]: Start difference. First operand 541 states and 829 transitions. Second operand 4 states. [2020-10-13 15:51:09,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:51:09,948 INFO L93 Difference]: Finished difference Result 1201 states and 1835 transitions. [2020-10-13 15:51:09,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:51:09,948 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-13 15:51:09,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:51:09,953 INFO L225 Difference]: With dead ends: 1201 [2020-10-13 15:51:09,954 INFO L226 Difference]: Without dead ends: 712 [2020-10-13 15:51:09,955 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:51:09,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2020-10-13 15:51:10,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 643. [2020-10-13 15:51:10,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2020-10-13 15:51:10,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 971 transitions. [2020-10-13 15:51:10,005 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 971 transitions. Word has length 47 [2020-10-13 15:51:10,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:51:10,006 INFO L479 AbstractCegarLoop]: Abstraction has 643 states and 971 transitions. [2020-10-13 15:51:10,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:51:10,006 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 971 transitions. [2020-10-13 15:51:10,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-13 15:51:10,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:51:10,007 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] [2020-10-13 15:51:10,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 15:51:10,008 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:51:10,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:51:10,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1717192635, now seen corresponding path program 1 times [2020-10-13 15:51:10,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:51:10,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898105727] [2020-10-13 15:51:10,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:51:10,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:10,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:10,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:10,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:10,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:10,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 15:51:10,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:51:10,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 529 [2020-10-13 15:51:10,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:10,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:51:10,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 15:51:10,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 15:51:10,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:10,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:51:10,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:10,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:10,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:10,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:51:10,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:10,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:51:10,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:10,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:10,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:51:10,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:10,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:10,700 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 15:51:10,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898105727] [2020-10-13 15:51:10,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:51:10,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:51:10,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17063869] [2020-10-13 15:51:10,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:51:10,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:51:10,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:51:10,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:51:10,702 INFO L87 Difference]: Start difference. First operand 643 states and 971 transitions. Second operand 4 states. [2020-10-13 15:51:11,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:51:11,580 INFO L93 Difference]: Finished difference Result 1849 states and 2856 transitions. [2020-10-13 15:51:11,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:51:11,580 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-13 15:51:11,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:51:11,588 INFO L225 Difference]: With dead ends: 1849 [2020-10-13 15:51:11,589 INFO L226 Difference]: Without dead ends: 1256 [2020-10-13 15:51:11,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:51:11,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2020-10-13 15:51:11,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 1179. [2020-10-13 15:51:11,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1179 states. [2020-10-13 15:51:11,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1819 transitions. [2020-10-13 15:51:11,673 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1819 transitions. Word has length 47 [2020-10-13 15:51:11,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:51:11,674 INFO L479 AbstractCegarLoop]: Abstraction has 1179 states and 1819 transitions. [2020-10-13 15:51:11,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:51:11,674 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1819 transitions. [2020-10-13 15:51:11,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 15:51:11,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:51:11,677 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:51:11,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 15:51:11,678 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:51:11,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:51:11,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1339858719, now seen corresponding path program 1 times [2020-10-13 15:51:11,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:51:11,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1135844787] [2020-10-13 15:51:11,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:51:11,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:11,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:11,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:11,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:11,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:11,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:11,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:11,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:12,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:16,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:16,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 15:51:16,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 15:51:16,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 15:51:16,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:16,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:51:16,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-13 15:51:16,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:51:16,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:16,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:51:16,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:16,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:16,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:16,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:51:16,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:16,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:51:16,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:16,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:16,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:51:16,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:16,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:16,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 15:51:16,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:16,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:16,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:16,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 15:51:16,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:16,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 15:51:16,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:16,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:51:16,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:51:16,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:51:16,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:51:16,855 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:51:16,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1135844787] [2020-10-13 15:51:16,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:51:16,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:51:16,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463597418] [2020-10-13 15:51:16,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:51:16,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:51:16,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:51:16,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:51:16,859 INFO L87 Difference]: Start difference. First operand 1179 states and 1819 transitions. Second operand 5 states. [2020-10-13 15:51:18,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:51:18,682 INFO L93 Difference]: Finished difference Result 3779 states and 6006 transitions. [2020-10-13 15:51:18,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 15:51:18,683 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-10-13 15:51:18,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:51:18,699 INFO L225 Difference]: With dead ends: 3779 [2020-10-13 15:51:18,699 INFO L226 Difference]: Without dead ends: 2316 [2020-10-13 15:51:18,709 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 15:51:18,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2316 states. [2020-10-13 15:51:18,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2316 to 2119. [2020-10-13 15:51:18,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2119 states. [2020-10-13 15:51:18,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2119 states to 2119 states and 3320 transitions. [2020-10-13 15:51:18,889 INFO L78 Accepts]: Start accepts. Automaton has 2119 states and 3320 transitions. Word has length 67 [2020-10-13 15:51:18,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:51:18,890 INFO L479 AbstractCegarLoop]: Abstraction has 2119 states and 3320 transitions. [2020-10-13 15:51:18,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:51:18,890 INFO L276 IsEmpty]: Start isEmpty. Operand 2119 states and 3320 transitions. [2020-10-13 15:51:18,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-13 15:51:18,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:51:18,895 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:51:18,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 15:51:18,895 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:51:18,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:51:18,896 INFO L82 PathProgramCache]: Analyzing trace with hash 121813521, now seen corresponding path program 1 times [2020-10-13 15:51:18,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:51:18,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [832199757] [2020-10-13 15:51:18,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:51:18,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:18,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:18,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:19,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:19,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:19,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:19,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:19,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:23,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:23,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 15:51:23,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:51:23,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 15:51:23,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:23,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:51:23,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 15:51:23,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 15:51:23,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:51:24,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:51:24,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:24,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:24,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:24,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:51:24,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:24,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:51:24,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:24,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:24,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:51:24,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:24,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:24,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 15:51:24,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:24,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:24,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:24,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 15:51:24,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:24,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 15:51:24,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:24,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:51:24,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 15:51:24,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 15:51:24,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:24,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 15:51:24,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:24,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:24,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:24,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 15:51:24,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:24,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:51:24,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:24,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:24,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 15:51:24,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:24,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:24,133 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:51:24,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [832199757] [2020-10-13 15:51:24,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:51:24,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 15:51:24,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378249378] [2020-10-13 15:51:24,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 15:51:24,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:51:24,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 15:51:24,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 15:51:24,136 INFO L87 Difference]: Start difference. First operand 2119 states and 3320 transitions. Second operand 8 states. [2020-10-13 15:51:26,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:51:26,828 INFO L93 Difference]: Finished difference Result 7215 states and 12071 transitions. [2020-10-13 15:51:26,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 15:51:26,828 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 76 [2020-10-13 15:51:26,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:51:26,860 INFO L225 Difference]: With dead ends: 7215 [2020-10-13 15:51:26,861 INFO L226 Difference]: Without dead ends: 4686 [2020-10-13 15:51:26,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2020-10-13 15:51:26,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4686 states. [2020-10-13 15:51:27,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4686 to 3799. [2020-10-13 15:51:27,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3799 states. [2020-10-13 15:51:27,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3799 states to 3799 states and 6256 transitions. [2020-10-13 15:51:27,274 INFO L78 Accepts]: Start accepts. Automaton has 3799 states and 6256 transitions. Word has length 76 [2020-10-13 15:51:27,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:51:27,275 INFO L479 AbstractCegarLoop]: Abstraction has 3799 states and 6256 transitions. [2020-10-13 15:51:27,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 15:51:27,275 INFO L276 IsEmpty]: Start isEmpty. Operand 3799 states and 6256 transitions. [2020-10-13 15:51:27,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-13 15:51:27,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:51:27,286 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:51:27,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 15:51:27,286 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:51:27,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:51:27,287 INFO L82 PathProgramCache]: Analyzing trace with hash -2093672825, now seen corresponding path program 1 times [2020-10-13 15:51:27,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:51:27,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [875520462] [2020-10-13 15:51:27,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:51:27,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:27,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:27,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:27,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:27,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:27,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:27,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:28,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:28,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:28,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:32,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:32,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 15:51:32,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 15:51:32,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 15:51:32,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:32,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:51:32,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-13 15:51:32,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:51:32,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:32,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:51:32,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:32,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:32,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:32,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:51:32,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:32,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:51:32,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:32,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:32,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:51:32,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:32,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:32,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 15:51:32,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:32,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:32,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:32,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:51:32,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:32,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:51:32,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:32,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:51:32,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:51:32,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 15:51:32,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:32,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 15:51:32,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:32,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:32,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:32,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 15:51:32,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:32,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:51:32,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:32,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:51:32,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-13 15:51:32,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 15:51:32,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:32,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 15:51:32,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:32,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:32,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:32,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 15:51:32,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:32,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:51:32,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:32,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:32,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 15:51:32,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:32,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:32,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 15:51:32,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:32,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:32,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:32,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 15:51:32,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:32,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:51:32,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:32,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:32,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 15:51:32,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:32,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:32,476 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-13 15:51:32,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [875520462] [2020-10-13 15:51:32,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 15:51:32,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 15:51:32,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122637536] [2020-10-13 15:51:32,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 15:51:32,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:51:32,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 15:51:32,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-13 15:51:32,479 INFO L87 Difference]: Start difference. First operand 3799 states and 6256 transitions. Second operand 7 states. [2020-10-13 15:51:34,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:51:34,219 INFO L93 Difference]: Finished difference Result 8661 states and 14265 transitions. [2020-10-13 15:51:34,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 15:51:34,219 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2020-10-13 15:51:34,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:51:34,250 INFO L225 Difference]: With dead ends: 8661 [2020-10-13 15:51:34,250 INFO L226 Difference]: Without dead ends: 4952 [2020-10-13 15:51:34,268 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-13 15:51:34,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4952 states. [2020-10-13 15:51:34,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4952 to 3959. [2020-10-13 15:51:34,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3959 states. [2020-10-13 15:51:34,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3959 states to 3959 states and 6371 transitions. [2020-10-13 15:51:34,585 INFO L78 Accepts]: Start accepts. Automaton has 3959 states and 6371 transitions. Word has length 98 [2020-10-13 15:51:34,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:51:34,587 INFO L479 AbstractCegarLoop]: Abstraction has 3959 states and 6371 transitions. [2020-10-13 15:51:34,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 15:51:34,587 INFO L276 IsEmpty]: Start isEmpty. Operand 3959 states and 6371 transitions. [2020-10-13 15:51:34,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 15:51:34,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:51:34,598 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:51:34,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 15:51:34,599 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:51:34,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:51:34,599 INFO L82 PathProgramCache]: Analyzing trace with hash -446075030, now seen corresponding path program 1 times [2020-10-13 15:51:34,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:51:34,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1029265330] [2020-10-13 15:51:34,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:51:34,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:34,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:34,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:34,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:34,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:34,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:34,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:34,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:34,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:34,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:36,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:36,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:37,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:37,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:38,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:39,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:39,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 15:51:39,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 15:51:39,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 15:51:39,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:39,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:51:39,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 15:51:39,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 15:51:39,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:39,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:51:39,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:39,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:39,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:39,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:51:39,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:39,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:51:39,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:39,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:39,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:51:39,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:39,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:39,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 15:51:39,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:39,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:39,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:39,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:39,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 15:51:39,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:51:39,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 15:51:39,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:39,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:51:39,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 15:51:39,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 15:51:39,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:39,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 15:51:39,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:39,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:39,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:39,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:51:39,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:39,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:51:39,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:39,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:51:39,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 15:51:39,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:51:39,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:39,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 15:51:39,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:39,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:39,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:39,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 15:51:39,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:39,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:51:39,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:39,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:39,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 15:51:39,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:39,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:39,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 15:51:39,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:39,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:39,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:39,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 15:51:39,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:39,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:51:39,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:39,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:39,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 15:51:39,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:39,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:39,897 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-13 15:51:39,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1029265330] [2020-10-13 15:51:39,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 15:51:39,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 15:51:39,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980716615] [2020-10-13 15:51:39,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 15:51:39,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:51:39,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 15:51:39,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-13 15:51:39,900 INFO L87 Difference]: Start difference. First operand 3959 states and 6371 transitions. Second operand 9 states. [2020-10-13 15:51:43,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:51:43,220 INFO L93 Difference]: Finished difference Result 16487 states and 28151 transitions. [2020-10-13 15:51:43,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 15:51:43,221 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 122 [2020-10-13 15:51:43,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:51:43,327 INFO L225 Difference]: With dead ends: 16487 [2020-10-13 15:51:43,327 INFO L226 Difference]: Without dead ends: 12618 [2020-10-13 15:51:43,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2020-10-13 15:51:43,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12618 states. [2020-10-13 15:51:44,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12618 to 9149. [2020-10-13 15:51:44,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9149 states. [2020-10-13 15:51:44,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9149 states to 9149 states and 14976 transitions. [2020-10-13 15:51:44,250 INFO L78 Accepts]: Start accepts. Automaton has 9149 states and 14976 transitions. Word has length 122 [2020-10-13 15:51:44,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:51:44,251 INFO L479 AbstractCegarLoop]: Abstraction has 9149 states and 14976 transitions. [2020-10-13 15:51:44,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 15:51:44,252 INFO L276 IsEmpty]: Start isEmpty. Operand 9149 states and 14976 transitions. [2020-10-13 15:51:44,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 15:51:44,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:51:44,276 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:51:44,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 15:51:44,277 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:51:44,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:51:44,277 INFO L82 PathProgramCache]: Analyzing trace with hash -2093437972, now seen corresponding path program 1 times [2020-10-13 15:51:44,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:51:44,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932580902] [2020-10-13 15:51:44,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:51:44,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:44,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:44,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:44,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:44,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:44,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:44,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:44,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:45,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:45,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:45,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:45,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:49,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:49,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 15:51:49,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 15:51:49,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 15:51:49,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:49,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:51:49,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:51:49,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:51:49,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:49,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:51:49,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:49,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:49,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:49,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:51:49,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:49,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:51:49,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:49,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:49,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:51:49,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:49,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:49,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 15:51:49,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:49,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:49,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:49,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 15:51:49,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:49,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:51:49,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:49,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:49,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 15:51:49,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:49,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:49,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 15:51:49,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:49,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:49,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:49,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:51:49,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:49,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:51:49,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:49,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:49,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:51:49,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:49,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:49,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 15:51:49,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:49,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:49,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:49,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 15:51:49,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:49,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:51:49,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:49,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:49,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 15:51:49,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:49,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:49,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 15:51:49,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:49,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:49,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:49,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 15:51:49,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:49,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:51:49,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:49,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:49,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 15:51:49,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:49,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:49,586 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-13 15:51:49,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [932580902] [2020-10-13 15:51:49,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:51:49,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 15:51:49,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519472041] [2020-10-13 15:51:49,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 15:51:49,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:51:49,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 15:51:49,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-13 15:51:49,588 INFO L87 Difference]: Start difference. First operand 9149 states and 14976 transitions. Second operand 7 states. [2020-10-13 15:51:50,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:51:50,908 INFO L93 Difference]: Finished difference Result 20415 states and 33499 transitions. [2020-10-13 15:51:50,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 15:51:50,909 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2020-10-13 15:51:50,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:51:50,965 INFO L225 Difference]: With dead ends: 20415 [2020-10-13 15:51:50,965 INFO L226 Difference]: Without dead ends: 11356 [2020-10-13 15:51:51,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2020-10-13 15:51:51,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11356 states. [2020-10-13 15:51:51,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11356 to 9077. [2020-10-13 15:51:51,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9077 states. [2020-10-13 15:51:51,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9077 states to 9077 states and 14877 transitions. [2020-10-13 15:51:51,758 INFO L78 Accepts]: Start accepts. Automaton has 9077 states and 14877 transitions. Word has length 122 [2020-10-13 15:51:51,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:51:51,758 INFO L479 AbstractCegarLoop]: Abstraction has 9077 states and 14877 transitions. [2020-10-13 15:51:51,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 15:51:51,759 INFO L276 IsEmpty]: Start isEmpty. Operand 9077 states and 14877 transitions. [2020-10-13 15:51:51,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-13 15:51:51,791 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:51:51,792 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:51:51,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 15:51:51,792 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:51:51,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:51:51,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1893814883, now seen corresponding path program 1 times [2020-10-13 15:51:51,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:51:51,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1205417605] [2020-10-13 15:51:51,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:51:51,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:51,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:51,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:51,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:51,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:51,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:52,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:52,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:52,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:52,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:55,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:55,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:55,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:56,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:56,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-13 15:51:56,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 15:51:56,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 15:51:56,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:56,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:51:56,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-13 15:51:56,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 15:51:56,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:56,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:51:56,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:56,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:56,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:56,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:51:56,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:56,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:51:56,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:56,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:56,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:51:56,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:56,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:56,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 15:51:56,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:56,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:56,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:56,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 15:51:56,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:56,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 15:51:56,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:56,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:51:56,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:51:56,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 15:51:56,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:56,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 15:51:56,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:56,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:56,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:56,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:51:56,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:56,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:51:56,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:56,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:56,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:51:56,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:56,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:56,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 15:51:56,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:56,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:57,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:57,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:51:57,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:57,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:51:57,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:57,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:51:57,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:51:57,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 15:51:57,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:57,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 15:51:57,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:57,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:57,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:57,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 15:51:57,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:57,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:51:57,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:57,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:57,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 15:51:57,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:57,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:57,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 15:51:57,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:57,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:57,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:57,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 15:51:57,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:57,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:51:57,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:57,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:57,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 15:51:57,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:57,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:57,044 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-13 15:51:57,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1205417605] [2020-10-13 15:51:57,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:51:57,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 15:51:57,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145845644] [2020-10-13 15:51:57,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 15:51:57,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:51:57,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 15:51:57,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-13 15:51:57,046 INFO L87 Difference]: Start difference. First operand 9077 states and 14877 transitions. Second operand 8 states. [2020-10-13 15:51:59,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:51:59,295 INFO L93 Difference]: Finished difference Result 23115 states and 38921 transitions. [2020-10-13 15:51:59,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 15:51:59,296 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 129 [2020-10-13 15:51:59,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:51:59,364 INFO L225 Difference]: With dead ends: 23115 [2020-10-13 15:51:59,364 INFO L226 Difference]: Without dead ends: 14128 [2020-10-13 15:51:59,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-13 15:51:59,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14128 states. [2020-10-13 15:52:00,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14128 to 9481. [2020-10-13 15:52:00,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9481 states. [2020-10-13 15:52:00,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9481 states to 9481 states and 15392 transitions. [2020-10-13 15:52:00,253 INFO L78 Accepts]: Start accepts. Automaton has 9481 states and 15392 transitions. Word has length 129 [2020-10-13 15:52:00,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:52:00,253 INFO L479 AbstractCegarLoop]: Abstraction has 9481 states and 15392 transitions. [2020-10-13 15:52:00,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 15:52:00,253 INFO L276 IsEmpty]: Start isEmpty. Operand 9481 states and 15392 transitions. [2020-10-13 15:52:00,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-13 15:52:00,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:52:00,280 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:52:00,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 15:52:00,281 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:52:00,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:52:00,281 INFO L82 PathProgramCache]: Analyzing trace with hash 514945204, now seen corresponding path program 1 times [2020-10-13 15:52:00,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:52:00,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [687971391] [2020-10-13 15:52:00,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:52:00,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:00,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:00,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:00,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:00,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:00,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:00,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:00,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:00,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:01,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:01,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:01,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:01,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:05,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:05,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-13 15:52:05,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 15:52:05,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 15:52:05,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:05,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:52:05,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-13 15:52:05,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 15:52:05,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:05,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:52:05,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:05,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:05,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:05,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:52:05,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:05,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:52:05,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:05,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:05,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:52:05,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:05,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:05,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 15:52:05,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:05,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:05,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:05,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 15:52:05,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:05,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:52:05,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:05,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:05,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:52:05,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:05,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:05,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 15:52:05,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:05,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:05,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:05,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:52:05,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:05,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:52:05,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:05,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:05,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:52:05,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:05,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:05,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 15:52:05,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:05,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:05,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:05,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:52:05,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:05,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:52:05,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:05,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:05,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:52:05,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:05,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:05,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-13 15:52:05,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:05,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:05,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:05,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 15:52:05,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:05,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:52:05,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:05,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:52:05,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 15:52:05,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 15:52:05,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:05,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-13 15:52:05,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:05,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:05,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:05,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 15:52:05,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:05,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:52:05,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:05,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:05,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 15:52:05,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:05,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:05,530 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-13 15:52:05,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [687971391] [2020-10-13 15:52:05,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 15:52:05,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 15:52:05,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398622378] [2020-10-13 15:52:05,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 15:52:05,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:52:05,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 15:52:05,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-13 15:52:05,531 INFO L87 Difference]: Start difference. First operand 9481 states and 15392 transitions. Second operand 8 states. [2020-10-13 15:52:07,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:52:07,660 INFO L93 Difference]: Finished difference Result 22711 states and 37701 transitions. [2020-10-13 15:52:07,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 15:52:07,660 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 131 [2020-10-13 15:52:07,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:52:07,716 INFO L225 Difference]: With dead ends: 22711 [2020-10-13 15:52:07,716 INFO L226 Difference]: Without dead ends: 13578 [2020-10-13 15:52:07,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-13 15:52:07,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13578 states. [2020-10-13 15:52:08,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13578 to 8709. [2020-10-13 15:52:08,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8709 states. [2020-10-13 15:52:08,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8709 states to 8709 states and 13940 transitions. [2020-10-13 15:52:08,518 INFO L78 Accepts]: Start accepts. Automaton has 8709 states and 13940 transitions. Word has length 131 [2020-10-13 15:52:08,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:52:08,519 INFO L479 AbstractCegarLoop]: Abstraction has 8709 states and 13940 transitions. [2020-10-13 15:52:08,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 15:52:08,519 INFO L276 IsEmpty]: Start isEmpty. Operand 8709 states and 13940 transitions. [2020-10-13 15:52:08,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-13 15:52:08,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:52:08,547 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:52:08,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 15:52:08,547 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:52:08,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:52:08,547 INFO L82 PathProgramCache]: Analyzing trace with hash 2054220909, now seen corresponding path program 1 times [2020-10-13 15:52:08,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:52:08,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319047181] [2020-10-13 15:52:08,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:52:08,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:08,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:08,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:08,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:08,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:08,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:08,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:08,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:09,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:09,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:09,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:13,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:13,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-13 15:52:13,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 15:52:13,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 15:52:13,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:13,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:52:13,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-13 15:52:13,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 15:52:13,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:13,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:52:13,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:13,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:13,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:13,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:52:13,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:13,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:52:13,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:13,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:13,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:52:13,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:13,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:13,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 15:52:13,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:13,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:13,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:13,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:13,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 15:52:13,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:52:13,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 15:52:13,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:13,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:52:13,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 15:52:13,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 15:52:13,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:13,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 15:52:13,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:13,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:13,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:13,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:52:13,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:13,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:52:13,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:13,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:52:13,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 15:52:13,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:52:13,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:13,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 15:52:13,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:13,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:13,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:13,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:52:13,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:13,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:52:13,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:13,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:52:13,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:52:13,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:52:13,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:13,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-13 15:52:13,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:13,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:13,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:13,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 15:52:13,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:13,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:52:13,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:13,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:13,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 15:52:13,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:13,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:13,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-13 15:52:13,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:13,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:13,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:13,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 15:52:13,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:13,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:52:13,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:13,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:13,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 15:52:13,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:13,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:13,878 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-13 15:52:13,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319047181] [2020-10-13 15:52:13,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 15:52:13,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 15:52:13,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60540800] [2020-10-13 15:52:13,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 15:52:13,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:52:13,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 15:52:13,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-13 15:52:13,880 INFO L87 Difference]: Start difference. First operand 8709 states and 13940 transitions. Second operand 10 states. [2020-10-13 15:52:18,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:52:18,492 INFO L93 Difference]: Finished difference Result 45989 states and 79147 transitions. [2020-10-13 15:52:18,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-13 15:52:18,493 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 132 [2020-10-13 15:52:18,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:52:18,699 INFO L225 Difference]: With dead ends: 45989 [2020-10-13 15:52:18,700 INFO L226 Difference]: Without dead ends: 37406 [2020-10-13 15:52:18,761 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=320, Invalid=1162, Unknown=0, NotChecked=0, Total=1482 [2020-10-13 15:52:18,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37406 states. [2020-10-13 15:52:20,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37406 to 23963. [2020-10-13 15:52:20,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23963 states. [2020-10-13 15:52:20,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23963 states to 23963 states and 38682 transitions. [2020-10-13 15:52:20,866 INFO L78 Accepts]: Start accepts. Automaton has 23963 states and 38682 transitions. Word has length 132 [2020-10-13 15:52:20,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:52:20,866 INFO L479 AbstractCegarLoop]: Abstraction has 23963 states and 38682 transitions. [2020-10-13 15:52:20,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 15:52:20,866 INFO L276 IsEmpty]: Start isEmpty. Operand 23963 states and 38682 transitions. [2020-10-13 15:52:20,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-13 15:52:20,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:52:20,903 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:52:20,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 15:52:20,903 INFO L427 AbstractCegarLoop]: === Iteration 16 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:52:20,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:52:20,904 INFO L82 PathProgramCache]: Analyzing trace with hash 3812011, now seen corresponding path program 1 times [2020-10-13 15:52:20,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:52:20,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [120094385] [2020-10-13 15:52:20,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:52:20,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:20,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:20,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:20,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:20,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:21,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:21,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:21,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:21,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:21,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:25,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:25,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-13 15:52:25,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 15:52:25,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 15:52:25,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:25,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:52:25,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:52:25,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:52:25,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:26,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:52:26,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:26,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:26,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:26,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:52:26,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:26,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:52:26,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:26,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:26,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:52:26,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:26,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:26,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 15:52:26,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:26,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:26,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:26,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 15:52:26,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:26,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:52:26,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:26,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:26,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 15:52:26,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:26,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:26,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 15:52:26,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:26,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:26,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:26,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:52:26,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:26,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:52:26,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:26,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:26,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:52:26,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:26,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:26,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 15:52:26,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:26,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:26,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:26,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:52:26,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:26,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:52:26,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:26,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:26,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:52:26,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:26,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:26,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-13 15:52:26,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:26,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:26,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:26,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 15:52:26,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:26,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:52:26,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:26,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:26,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 15:52:26,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:26,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:26,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-13 15:52:26,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:26,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:26,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:26,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 15:52:26,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:26,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:52:26,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:26,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:26,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 15:52:26,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:26,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:26,166 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-13 15:52:26,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [120094385] [2020-10-13 15:52:26,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:52:26,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 15:52:26,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680434252] [2020-10-13 15:52:26,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 15:52:26,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:52:26,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 15:52:26,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-13 15:52:26,168 INFO L87 Difference]: Start difference. First operand 23963 states and 38682 transitions. Second operand 8 states. [2020-10-13 15:52:29,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:52:29,784 INFO L93 Difference]: Finished difference Result 56755 states and 92595 transitions. [2020-10-13 15:52:29,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 15:52:29,784 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 132 [2020-10-13 15:52:29,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:52:29,945 INFO L225 Difference]: With dead ends: 56755 [2020-10-13 15:52:29,945 INFO L226 Difference]: Without dead ends: 32926 [2020-10-13 15:52:30,034 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2020-10-13 15:52:30,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32926 states. [2020-10-13 15:52:33,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32926 to 23667. [2020-10-13 15:52:33,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23667 states. [2020-10-13 15:52:33,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23667 states to 23667 states and 38254 transitions. [2020-10-13 15:52:33,354 INFO L78 Accepts]: Start accepts. Automaton has 23667 states and 38254 transitions. Word has length 132 [2020-10-13 15:52:33,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:52:33,354 INFO L479 AbstractCegarLoop]: Abstraction has 23667 states and 38254 transitions. [2020-10-13 15:52:33,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 15:52:33,355 INFO L276 IsEmpty]: Start isEmpty. Operand 23667 states and 38254 transitions. [2020-10-13 15:52:33,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-13 15:52:33,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:52:33,384 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:52:33,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 15:52:33,384 INFO L427 AbstractCegarLoop]: === Iteration 17 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:52:33,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:52:33,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1276287451, now seen corresponding path program 1 times [2020-10-13 15:52:33,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:52:33,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1232689280] [2020-10-13 15:52:33,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:52:33,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:33,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:33,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:33,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:33,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:33,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:33,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:33,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:33,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:34,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:34,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:38,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:38,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-13 15:52:38,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 15:52:38,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 15:52:38,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:38,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:52:38,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-13 15:52:38,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 15:52:38,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:38,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:52:38,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:38,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:38,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:38,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:52:38,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:38,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:52:38,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:38,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:38,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:52:38,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:38,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:38,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 15:52:38,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:38,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:38,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:38,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 15:52:38,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:38,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 15:52:38,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:38,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:52:38,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:52:38,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 15:52:38,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:38,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 15:52:38,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:38,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:38,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:38,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:52:38,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:38,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:52:38,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:38,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:38,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:52:38,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:38,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:38,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 15:52:38,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:38,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:38,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:38,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:52:38,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:38,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:52:38,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:38,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:52:38,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:52:38,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 15:52:38,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:38,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 15:52:38,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:38,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:38,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:38,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:52:38,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:38,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:52:38,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:38,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:52:38,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:52:38,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:52:38,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:38,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 15:52:38,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:38,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:38,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:38,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 15:52:38,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:38,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:52:38,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:38,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:38,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 15:52:38,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:38,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:38,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 15:52:38,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:38,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:38,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:38,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 15:52:38,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:38,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:52:38,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:38,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:38,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 15:52:38,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:38,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:38,666 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-13 15:52:38,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1232689280] [2020-10-13 15:52:38,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:52:38,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 15:52:38,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694043772] [2020-10-13 15:52:38,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 15:52:38,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:52:38,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 15:52:38,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 15:52:38,668 INFO L87 Difference]: Start difference. First operand 23667 states and 38254 transitions. Second operand 9 states. [2020-10-13 15:52:43,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:52:43,013 INFO L93 Difference]: Finished difference Result 58611 states and 97465 transitions. [2020-10-13 15:52:43,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-13 15:52:43,014 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 139 [2020-10-13 15:52:43,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:52:43,172 INFO L225 Difference]: With dead ends: 58611 [2020-10-13 15:52:43,173 INFO L226 Difference]: Without dead ends: 35078 [2020-10-13 15:52:43,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=182, Invalid=520, Unknown=0, NotChecked=0, Total=702 [2020-10-13 15:52:43,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35078 states. [2020-10-13 15:52:44,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35078 to 22287. [2020-10-13 15:52:44,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22287 states. [2020-10-13 15:52:44,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22287 states to 22287 states and 35396 transitions. [2020-10-13 15:52:44,995 INFO L78 Accepts]: Start accepts. Automaton has 22287 states and 35396 transitions. Word has length 139 [2020-10-13 15:52:44,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:52:44,995 INFO L479 AbstractCegarLoop]: Abstraction has 22287 states and 35396 transitions. [2020-10-13 15:52:44,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 15:52:44,995 INFO L276 IsEmpty]: Start isEmpty. Operand 22287 states and 35396 transitions. [2020-10-13 15:52:45,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-13 15:52:45,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:52:45,027 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:52:45,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 15:52:45,028 INFO L427 AbstractCegarLoop]: === Iteration 18 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:52:45,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:52:45,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1636975394, now seen corresponding path program 1 times [2020-10-13 15:52:45,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:52:45,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1529108751] [2020-10-13 15:52:45,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:52:45,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:45,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:45,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:45,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:45,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:45,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:45,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:47,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:47,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:47,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:50,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:50,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:50,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:50,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-13 15:52:50,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 15:52:50,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 15:52:50,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:50,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:52:50,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:52:50,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 15:52:50,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:50,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:52:50,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:50,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:50,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:50,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:52:50,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:50,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:52:50,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:50,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:50,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:52:50,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:50,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:51,076 WARN L193 SmtUtils]: Spent 926.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2020-10-13 15:52:51,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 15:52:51,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:51,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:51,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:51,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 15:52:51,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:51,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 15:52:51,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:51,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:51,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-13 15:52:51,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:51,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:51,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 15:52:51,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:51,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:51,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:51,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:52:51,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:51,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:52:51,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:51,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:51,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:52:51,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:51,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:51,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 15:52:51,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:51,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:51,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:51,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 15:52:51,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:51,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:52:51,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:51,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:51,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:52:51,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:51,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:51,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 15:52:51,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:51,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:51,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:51,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:52:51,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:51,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:52:51,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:51,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:51,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:52:51,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:51,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:51,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 15:52:51,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:51,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:51,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:51,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 15:52:51,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:51,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:52:51,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:51,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:51,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:52:51,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:51,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:51,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-13 15:52:51,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:51,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:51,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:51,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 15:52:51,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:51,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:52:51,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:51,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:51,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 15:52:51,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:51,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:51,210 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-13 15:52:51,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1529108751] [2020-10-13 15:52:51,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:52:51,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 15:52:51,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517595412] [2020-10-13 15:52:51,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 15:52:51,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:52:51,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 15:52:51,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 15:52:51,213 INFO L87 Difference]: Start difference. First operand 22287 states and 35396 transitions. Second operand 9 states. [2020-10-13 15:52:55,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:52:55,736 INFO L93 Difference]: Finished difference Result 56441 states and 91527 transitions. [2020-10-13 15:52:55,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-13 15:52:55,736 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 145 [2020-10-13 15:52:55,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:52:56,021 INFO L225 Difference]: With dead ends: 56441 [2020-10-13 15:52:56,021 INFO L226 Difference]: Without dead ends: 34848 [2020-10-13 15:52:56,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=217, Invalid=539, Unknown=0, NotChecked=0, Total=756 [2020-10-13 15:52:56,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34848 states. [2020-10-13 15:52:57,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34848 to 22251. [2020-10-13 15:52:57,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22251 states. [2020-10-13 15:52:57,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22251 states to 22251 states and 35382 transitions. [2020-10-13 15:52:57,589 INFO L78 Accepts]: Start accepts. Automaton has 22251 states and 35382 transitions. Word has length 145 [2020-10-13 15:52:57,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:52:57,590 INFO L479 AbstractCegarLoop]: Abstraction has 22251 states and 35382 transitions. [2020-10-13 15:52:57,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 15:52:57,590 INFO L276 IsEmpty]: Start isEmpty. Operand 22251 states and 35382 transitions. [2020-10-13 15:52:57,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-13 15:52:57,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:52:57,624 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:52:57,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 15:52:57,624 INFO L427 AbstractCegarLoop]: === Iteration 19 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:52:57,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:52:57,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1838551754, now seen corresponding path program 1 times [2020-10-13 15:52:57,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:52:57,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1779035334] [2020-10-13 15:52:57,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:52:57,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:57,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:57,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:57,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:57,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:57,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:57,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:57,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:57,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:57,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:00,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:00,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:00,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:00,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:02,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:02,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-13 15:53:02,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 15:53:02,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 15:53:02,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:02,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:53:02,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-13 15:53:02,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:53:02,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:02,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:53:02,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:02,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:02,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:02,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:53:02,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:02,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:53:02,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:02,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:53:02,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:53:02,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:53:02,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:02,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 15:53:02,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:02,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:02,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:02,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 15:53:02,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:02,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:53:02,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:02,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:53:02,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:53:02,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:53:02,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:02,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 15:53:02,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:02,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:02,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:02,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:53:02,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:02,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:53:02,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:02,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:53:02,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:53:02,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:53:02,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:02,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 15:53:02,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:02,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:02,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:02,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:53:02,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:02,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:53:02,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:02,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:53:02,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:53:02,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:53:02,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:02,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 15:53:02,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:02,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:02,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:02,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:53:02,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:02,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:53:02,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:02,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:53:02,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:53:02,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:53:02,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:02,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 15:53:02,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:02,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:02,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:02,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 15:53:02,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:02,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:53:02,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:02,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:53:02,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:53:02,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:53:02,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:02,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-13 15:53:02,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:02,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:02,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:02,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 15:53:02,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:02,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:53:02,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:02,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:53:02,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 15:53:02,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:53:02,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:02,902 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-13 15:53:02,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1779035334] [2020-10-13 15:53:02,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 15:53:02,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 15:53:02,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300603039] [2020-10-13 15:53:02,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 15:53:02,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:53:02,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 15:53:02,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 15:53:02,904 INFO L87 Difference]: Start difference. First operand 22251 states and 35382 transitions. Second operand 9 states. [2020-10-13 15:53:08,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:53:08,864 INFO L93 Difference]: Finished difference Result 69607 states and 114474 transitions. [2020-10-13 15:53:08,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-13 15:53:08,864 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 143 [2020-10-13 15:53:08,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:53:08,964 INFO L225 Difference]: With dead ends: 69607 [2020-10-13 15:53:08,965 INFO L226 Difference]: Without dead ends: 37734 [2020-10-13 15:53:09,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=182, Invalid=520, Unknown=0, NotChecked=0, Total=702 [2020-10-13 15:53:09,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37734 states. [2020-10-13 15:53:10,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37734 to 18985. [2020-10-13 15:53:10,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18985 states. [2020-10-13 15:53:10,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18985 states to 18985 states and 28840 transitions. [2020-10-13 15:53:10,650 INFO L78 Accepts]: Start accepts. Automaton has 18985 states and 28840 transitions. Word has length 143 [2020-10-13 15:53:10,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:53:10,651 INFO L479 AbstractCegarLoop]: Abstraction has 18985 states and 28840 transitions. [2020-10-13 15:53:10,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 15:53:10,651 INFO L276 IsEmpty]: Start isEmpty. Operand 18985 states and 28840 transitions. [2020-10-13 15:53:10,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-13 15:53:10,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:53:10,671 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:53:10,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 15:53:10,671 INFO L427 AbstractCegarLoop]: === Iteration 20 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:53:10,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:53:10,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1479646328, now seen corresponding path program 1 times [2020-10-13 15:53:10,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:53:10,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800778614] [2020-10-13 15:53:10,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:53:10,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:10,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:10,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:10,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:10,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:11,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:11,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:11,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:11,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:15,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:15,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-13 15:53:15,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 15:53:15,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 15:53:15,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:15,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:53:15,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-13 15:53:15,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 15:53:15,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:15,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:53:15,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:15,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:15,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:15,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:53:15,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:15,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:53:15,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:15,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:53:15,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:53:15,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:53:15,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:15,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 15:53:15,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:15,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:15,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:15,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:15,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 15:53:15,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:53:15,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 15:53:15,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:15,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:53:15,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:53:15,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 15:53:15,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:15,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 15:53:15,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:15,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:15,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:15,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:53:15,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:15,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:53:15,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:15,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:53:15,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:53:15,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:53:15,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:15,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 15:53:15,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:15,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:15,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:15,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:53:15,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:15,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:53:15,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:15,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:53:15,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:53:15,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:53:15,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:15,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 15:53:15,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:15,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:15,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:15,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:53:15,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:15,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:53:15,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:15,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:53:15,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:53:15,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:53:15,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:15,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-13 15:53:15,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:15,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:15,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:15,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 15:53:15,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:15,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:53:15,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:15,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:53:15,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:53:15,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 15:53:15,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:15,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-13 15:53:15,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:15,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:15,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:15,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 15:53:15,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:15,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:53:15,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:15,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:53:15,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 15:53:15,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:53:15,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:15,981 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-13 15:53:15,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800778614] [2020-10-13 15:53:15,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 15:53:15,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 15:53:15,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960378995] [2020-10-13 15:53:15,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 15:53:15,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:53:15,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 15:53:15,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 15:53:15,983 INFO L87 Difference]: Start difference. First operand 18985 states and 28840 transitions. Second operand 9 states. [2020-10-13 15:53:22,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:53:22,143 INFO L93 Difference]: Finished difference Result 55453 states and 83727 transitions. [2020-10-13 15:53:22,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-13 15:53:22,143 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 142 [2020-10-13 15:53:22,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:53:22,250 INFO L225 Difference]: With dead ends: 55453 [2020-10-13 15:53:22,250 INFO L226 Difference]: Without dead ends: 36588 [2020-10-13 15:53:22,314 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650 [2020-10-13 15:53:22,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36588 states. [2020-10-13 15:53:24,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36588 to 20917. [2020-10-13 15:53:24,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20917 states. [2020-10-13 15:53:24,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20917 states to 20917 states and 29110 transitions. [2020-10-13 15:53:24,255 INFO L78 Accepts]: Start accepts. Automaton has 20917 states and 29110 transitions. Word has length 142 [2020-10-13 15:53:24,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:53:24,255 INFO L479 AbstractCegarLoop]: Abstraction has 20917 states and 29110 transitions. [2020-10-13 15:53:24,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 15:53:24,255 INFO L276 IsEmpty]: Start isEmpty. Operand 20917 states and 29110 transitions. [2020-10-13 15:53:24,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-13 15:53:24,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:53:24,284 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:53:24,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 15:53:24,284 INFO L427 AbstractCegarLoop]: === Iteration 21 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:53:24,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:53:24,285 INFO L82 PathProgramCache]: Analyzing trace with hash -575432197, now seen corresponding path program 1 times [2020-10-13 15:53:24,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:53:24,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1259856636] [2020-10-13 15:53:24,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:53:24,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:24,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:24,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:24,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:24,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:24,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:24,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:24,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:24,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:24,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:24,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:29,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:29,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-13 15:53:29,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 15:53:29,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 15:53:29,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:29,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:53:29,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:53:29,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:53:29,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:29,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:53:29,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:29,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:29,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:29,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:53:29,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:29,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:53:29,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:29,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:53:29,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:53:29,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:53:29,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:29,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 15:53:29,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:29,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:29,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:29,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-13 15:53:29,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:29,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 15:53:29,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:29,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:53:29,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:53:29,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:53:29,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:29,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 15:53:29,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:29,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:29,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:29,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:53:29,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:29,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:53:29,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:29,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:53:29,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:53:29,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:53:29,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:29,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 15:53:29,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:29,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:29,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:29,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:53:29,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:29,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:53:29,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:29,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:53:29,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:53:29,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:53:29,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:29,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 15:53:29,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:29,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:29,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:29,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:53:29,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:29,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:53:29,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:29,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:53:29,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:53:29,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:53:29,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:29,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-13 15:53:29,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:29,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:29,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:29,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 15:53:29,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:29,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:53:29,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:29,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:53:29,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:53:29,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:53:29,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:29,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-13 15:53:29,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:29,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:29,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:29,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 15:53:29,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:29,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:53:29,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:29,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:53:29,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 15:53:29,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:53:29,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:29,555 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-13 15:53:29,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1259856636] [2020-10-13 15:53:29,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:53:29,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 15:53:29,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048481583] [2020-10-13 15:53:29,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 15:53:29,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:53:29,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 15:53:29,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 15:53:29,557 INFO L87 Difference]: Start difference. First operand 20917 states and 29110 transitions. Second operand 9 states. [2020-10-13 15:53:37,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:53:37,436 INFO L93 Difference]: Finished difference Result 83327 states and 120406 transitions. [2020-10-13 15:53:37,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 15:53:37,437 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 156 [2020-10-13 15:53:37,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:53:37,672 INFO L225 Difference]: With dead ends: 83327 [2020-10-13 15:53:37,673 INFO L226 Difference]: Without dead ends: 62419 [2020-10-13 15:53:37,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=150, Invalid=450, Unknown=0, NotChecked=0, Total=600 [2020-10-13 15:53:37,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62419 states. [2020-10-13 15:53:42,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62419 to 43229. [2020-10-13 15:53:42,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43229 states. [2020-10-13 15:53:42,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43229 states to 43229 states and 61877 transitions. [2020-10-13 15:53:42,585 INFO L78 Accepts]: Start accepts. Automaton has 43229 states and 61877 transitions. Word has length 156 [2020-10-13 15:53:42,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:53:42,585 INFO L479 AbstractCegarLoop]: Abstraction has 43229 states and 61877 transitions. [2020-10-13 15:53:42,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 15:53:42,585 INFO L276 IsEmpty]: Start isEmpty. Operand 43229 states and 61877 transitions. [2020-10-13 15:53:42,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-13 15:53:42,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:53:42,642 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:53:42,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 15:53:42,642 INFO L427 AbstractCegarLoop]: === Iteration 22 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:53:42,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:53:42,642 INFO L82 PathProgramCache]: Analyzing trace with hash -534285562, now seen corresponding path program 1 times [2020-10-13 15:53:42,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:53:42,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [827256485] [2020-10-13 15:53:42,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:53:42,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:42,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:42,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:42,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:42,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:42,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:42,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:43,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:47,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:47,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 15:53:47,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:53:47,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 15:53:47,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:47,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:53:47,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 15:53:47,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 15:53:47,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:53:47,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:53:47,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:47,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:47,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:47,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:53:47,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:47,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:53:47,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:47,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:53:47,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:53:47,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:53:47,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:53:47,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 15:53:47,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:47,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:47,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:47,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 15:53:47,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:47,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 15:53:47,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:47,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:53:47,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:53:47,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 15:53:47,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:53:47,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 15:53:47,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:47,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:47,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:47,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:53:47,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:47,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:53:47,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:47,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:53:47,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:53:47,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:53:47,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:47,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 15:53:47,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:47,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:47,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:47,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:53:47,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:47,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:53:47,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:47,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:53:47,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:53:47,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:53:47,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:48,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 15:53:48,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:48,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:48,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:48,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:53:48,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:48,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:53:48,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:48,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:53:48,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:53:48,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:53:48,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:48,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 15:53:48,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:48,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:48,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:48,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 15:53:48,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:48,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:53:48,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:48,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:53:48,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:53:48,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:53:48,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:48,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-13 15:53:48,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:48,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:48,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:48,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 15:53:48,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:48,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:53:48,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:48,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:53:48,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:53:48,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:53:48,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:48,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-13 15:53:48,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:48,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:48,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:48,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 15:53:48,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:48,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:53:48,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:48,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:53:48,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 15:53:48,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:53:48,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:48,128 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-13 15:53:48,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [827256485] [2020-10-13 15:53:48,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:53:48,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 15:53:48,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951392998] [2020-10-13 15:53:48,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 15:53:48,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:53:48,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 15:53:48,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-13 15:53:48,136 INFO L87 Difference]: Start difference. First operand 43229 states and 61877 transitions. Second operand 10 states. [2020-10-13 15:54:00,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:54:00,142 INFO L93 Difference]: Finished difference Result 115619 states and 176904 transitions. [2020-10-13 15:54:00,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-13 15:54:00,145 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 153 [2020-10-13 15:54:00,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:54:00,414 INFO L225 Difference]: With dead ends: 115619 [2020-10-13 15:54:00,415 INFO L226 Difference]: Without dead ends: 72458 [2020-10-13 15:54:00,552 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=210, Invalid=660, Unknown=0, NotChecked=0, Total=870 [2020-10-13 15:54:00,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72458 states. [2020-10-13 15:54:07,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72458 to 46553. [2020-10-13 15:54:07,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46553 states. [2020-10-13 15:54:08,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46553 states to 46553 states and 66066 transitions. [2020-10-13 15:54:08,097 INFO L78 Accepts]: Start accepts. Automaton has 46553 states and 66066 transitions. Word has length 153 [2020-10-13 15:54:08,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:54:08,098 INFO L479 AbstractCegarLoop]: Abstraction has 46553 states and 66066 transitions. [2020-10-13 15:54:08,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 15:54:08,098 INFO L276 IsEmpty]: Start isEmpty. Operand 46553 states and 66066 transitions. [2020-10-13 15:54:08,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-13 15:54:08,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:54:08,162 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:54:08,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 15:54:08,162 INFO L427 AbstractCegarLoop]: === Iteration 23 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:54:08,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:54:08,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1942600590, now seen corresponding path program 1 times [2020-10-13 15:54:08,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:54:08,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281435932] [2020-10-13 15:54:08,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:54:08,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:54:08,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:54:08,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:54:08,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:54:09,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:54:09,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:54:10,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:54:10,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:54:10,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:54:10,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:54:11,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:54:11,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:54:13,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:54:13,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-13 15:54:13,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 15:54:13,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 15:54:13,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:54:13,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:54:13,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:54:13,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 15:54:13,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:54:13,356 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-13 15:54:13,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:54:13,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:54:13,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:54:13,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:54:13,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:54:13,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:54:13,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:54:13,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:54:13,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:54:13,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:54:13,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:54:13,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:54:13,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 15:54:13,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:54:13,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:54:13,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:54:13,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 15:54:13,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:54:13,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 15:54:13,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:54:13,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:54:13,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-13 15:54:13,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:54:13,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:54:13,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 15:54:13,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:54:13,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:54:13,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:54:13,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:54:13,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:54:13,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:54:13,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:54:13,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:54:13,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:54:13,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:54:13,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:54:13,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 15:54:13,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:54:13,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:54:13,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:54:13,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:54:13,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:54:13,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:54:13,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:54:13,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:54:13,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:54:13,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:54:13,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:54:13,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 15:54:13,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:54:13,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:54:13,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:54:13,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 15:54:13,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:54:13,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:54:13,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:54:13,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:54:13,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:54:13,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:54:13,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:54:13,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 15:54:13,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:54:13,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:54:13,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:54:13,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 15:54:13,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:54:13,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:54:13,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:54:13,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:54:13,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:54:13,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:54:13,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:54:13,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-13 15:54:13,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:54:13,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:54:13,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:54:13,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 15:54:13,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:54:13,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:54:13,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:54:13,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:54:13,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:54:13,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:54:13,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:54:13,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-13 15:54:13,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:54:13,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:54:13,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:54:13,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 15:54:13,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:54:13,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:54:13,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:54:13,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:54:13,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 15:54:13,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:54:13,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:54:13,548 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-13 15:54:13,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [281435932] [2020-10-13 15:54:13,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:54:13,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 15:54:13,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609729576] [2020-10-13 15:54:13,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 15:54:13,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:54:13,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 15:54:13,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-13 15:54:13,550 INFO L87 Difference]: Start difference. First operand 46553 states and 66066 transitions. Second operand 10 states. [2020-10-13 15:54:22,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:54:22,932 INFO L93 Difference]: Finished difference Result 116703 states and 170349 transitions. [2020-10-13 15:54:22,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-13 15:54:22,933 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 157 [2020-10-13 15:54:22,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:54:23,171 INFO L225 Difference]: With dead ends: 116703 [2020-10-13 15:54:23,171 INFO L226 Difference]: Without dead ends: 70711 [2020-10-13 15:54:23,266 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=209, Invalid=661, Unknown=0, NotChecked=0, Total=870 [2020-10-13 15:54:23,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70711 states. [2020-10-13 15:54:28,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70711 to 46549. [2020-10-13 15:54:28,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46549 states. [2020-10-13 15:54:28,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46549 states to 46549 states and 66012 transitions. [2020-10-13 15:54:28,709 INFO L78 Accepts]: Start accepts. Automaton has 46549 states and 66012 transitions. Word has length 157 [2020-10-13 15:54:28,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:54:28,709 INFO L479 AbstractCegarLoop]: Abstraction has 46549 states and 66012 transitions. [2020-10-13 15:54:28,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 15:54:28,709 INFO L276 IsEmpty]: Start isEmpty. Operand 46549 states and 66012 transitions. [2020-10-13 15:54:28,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-13 15:54:28,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:54:28,779 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:54:28,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 15:54:28,779 INFO L427 AbstractCegarLoop]: === Iteration 24 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:54:28,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:54:28,780 INFO L82 PathProgramCache]: Analyzing trace with hash 158440326, now seen corresponding path program 1 times [2020-10-13 15:54:28,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:54:28,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1851231697] [2020-10-13 15:54:28,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:54:28,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:54:28,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:54:28,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:54:28,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:54:28,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking...