/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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/verifythis/duplets.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 10:22:54,234 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 10:22:54,237 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 10:22:54,278 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 10:22:54,278 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 10:22:54,286 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 10:22:54,288 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 10:22:54,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 10:22:54,294 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 10:22:54,297 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 10:22:54,298 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 10:22:54,299 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 10:22:54,299 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 10:22:54,302 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 10:22:54,305 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 10:22:54,307 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 10:22:54,308 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 10:22:54,309 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 10:22:54,310 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 10:22:54,320 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 10:22:54,322 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 10:22:54,323 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 10:22:54,324 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 10:22:54,325 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 10:22:54,338 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 10:22:54,341 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 10:22:54,341 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 10:22:54,342 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 10:22:54,343 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 10:22:54,347 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 10:22:54,347 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 10:22:54,348 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 10:22:54,348 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 10:22:54,349 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 10:22:54,350 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 10:22:54,353 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 10:22:54,354 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 10:22:54,354 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 10:22:54,354 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 10:22:54,355 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 10:22:54,356 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 10:22:54,359 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 10:22:54,401 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 10:22:54,402 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 10:22:54,403 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 10:22:54,404 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 10:22:54,404 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 10:22:54,404 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 10:22:54,404 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 10:22:54,405 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 10:22:54,405 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 10:22:54,405 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 10:22:54,406 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 10:22:54,406 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 10:22:54,406 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 10:22:54,407 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 10:22:54,407 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 10:22:54,407 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 10:22:54,407 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 10:22:54,408 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 10:22:54,408 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 10:22:54,408 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 10:22:54,409 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 10:22:54,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 10:22:54,409 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 10:22:54,409 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 10:22:54,409 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 10:22:54,410 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 10:22:54,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 10:22:54,410 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 10:22:54,410 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 10:22:54,410 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 10:22:54,737 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 10:22:54,752 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 10:22:54,760 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 10:22:54,762 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 10:22:54,762 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 10:22:54,763 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/duplets.c [2020-10-14 10:22:54,829 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/910777a0d/f9c33ce0b914488aab3e913a506003e9/FLAG0e4e6b514 [2020-10-14 10:22:55,292 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 10:22:55,292 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/duplets.c [2020-10-14 10:22:55,299 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/910777a0d/f9c33ce0b914488aab3e913a506003e9/FLAG0e4e6b514 [2020-10-14 10:22:55,616 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/910777a0d/f9c33ce0b914488aab3e913a506003e9 [2020-10-14 10:22:55,624 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 10:22:55,626 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 10:22:55,627 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 10:22:55,627 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 10:22:55,631 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 10:22:55,632 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:22:55" (1/1) ... [2020-10-14 10:22:55,635 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f21c349 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:22:55, skipping insertion in model container [2020-10-14 10:22:55,635 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:22:55" (1/1) ... [2020-10-14 10:22:55,645 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 10:22:55,666 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 10:22:55,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 10:22:55,862 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 10:22:55,997 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 10:22:56,021 INFO L208 MainTranslator]: Completed translation [2020-10-14 10:22:56,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:22:56 WrapperNode [2020-10-14 10:22:56,023 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 10:22:56,024 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 10:22:56,024 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 10:22:56,024 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 10:22:56,037 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:22:56" (1/1) ... [2020-10-14 10:22:56,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:22:56" (1/1) ... [2020-10-14 10:22:56,048 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:22:56" (1/1) ... [2020-10-14 10:22:56,048 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:22:56" (1/1) ... [2020-10-14 10:22:56,060 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:22:56" (1/1) ... [2020-10-14 10:22:56,066 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:22:56" (1/1) ... [2020-10-14 10:22:56,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:22:56" (1/1) ... [2020-10-14 10:22:56,071 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 10:22:56,072 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 10:22:56,072 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 10:22:56,072 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 10:22:56,073 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:22:56" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 10:22:56,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 10:22:56,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 10:22:56,135 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 10:22:56,135 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 10:22:56,135 INFO L138 BoogieDeclarations]: Found implementation of procedure mkdup [2020-10-14 10:22:56,135 INFO L138 BoogieDeclarations]: Found implementation of procedure finddup [2020-10-14 10:22:56,136 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 10:22:56,136 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-14 10:22:56,136 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 10:22:56,136 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-14 10:22:56,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 10:22:56,137 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 10:22:56,137 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 10:22:56,137 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 10:22:56,137 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 10:22:56,137 INFO L130 BoogieDeclarations]: Found specification of procedure mkdup [2020-10-14 10:22:56,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 10:22:56,138 INFO L130 BoogieDeclarations]: Found specification of procedure finddup [2020-10-14 10:22:56,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 10:22:56,138 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 10:22:56,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 10:22:56,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 10:22:56,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-14 10:22:56,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 10:22:56,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 10:22:56,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 10:22:56,536 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 10:22:56,537 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-14 10:22:56,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:22:56 BoogieIcfgContainer [2020-10-14 10:22:56,542 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 10:22:56,543 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 10:22:56,543 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 10:22:56,546 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 10:22:56,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:22:55" (1/3) ... [2020-10-14 10:22:56,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62df98f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:22:56, skipping insertion in model container [2020-10-14 10:22:56,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:22:56" (2/3) ... [2020-10-14 10:22:56,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62df98f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:22:56, skipping insertion in model container [2020-10-14 10:22:56,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:22:56" (3/3) ... [2020-10-14 10:22:56,550 INFO L109 eAbstractionObserver]: Analyzing ICFG duplets.c [2020-10-14 10:22:56,560 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 10:22:56,568 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 10:22:56,581 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 10:22:56,602 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 10:22:56,602 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 10:22:56,602 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 10:22:56,602 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 10:22:56,603 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 10:22:56,603 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 10:22:56,603 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 10:22:56,603 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 10:22:56,620 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2020-10-14 10:22:56,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 10:22:56,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:22:56,628 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:22:56,629 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:22:56,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:22:56,634 INFO L82 PathProgramCache]: Analyzing trace with hash -83521463, now seen corresponding path program 1 times [2020-10-14 10:22:56,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:22:56,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818741149] [2020-10-14 10:22:56,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:22:56,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:22:56,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:22:56,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:22:56,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:22:56,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:22:57,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:22:57,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 10:22:57,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:22:57,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 405 [2020-10-14 10:22:57,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:22:57,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:22:57,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:22:57,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 10:22:57,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:22:57,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 10:22:57,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:22:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:22:57,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:22:57,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:22:57,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:22:57,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:22:57,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:22:57,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:22:57,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:22:57,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:22:57,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:22:57,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:22:57,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:22:57,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:22:57,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:22:57,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:22:57,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:22:57,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:22:57,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:22:57,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:22:57,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:22:57,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:22:57,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:22:57,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 10:22:57,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:22:57,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:22:57,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 10:22:57,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:22:57,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:22:57,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:22:57,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:22:57,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:22:57,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:22:57,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:22:57,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:22:57,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:22:57,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 10:22:57,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:22:57,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:22:57,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 10:22:57,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:22:57,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:22:57,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:22:57,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:22:57,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:22:57,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:22:57,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 10:22:57,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:22:57,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-14 10:22:57,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:22:57,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:22:57,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:22:57,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 10:22:57,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:22:57,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:22:57,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 10:22:57,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:22:57,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:22:57,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:22:57,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:22:57,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:22:57,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:22:57,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 10:22:57,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:22:57,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:22:57,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:22:57,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:22:57,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:22:57,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-14 10:22:57,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:22:57,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:22:57,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:22:57,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:22:57,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:22:57,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:22:57,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:22:57,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 10:22:57,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:22:57,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:22:57,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:22:57,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:22:57,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:22:57,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:22:57,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 10:22:57,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:22:57,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:22:57,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:22:57,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:22:57,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:22:57,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:22:57,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 10:22:57,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:22:57,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:22:57,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:22:57,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 10:22:57,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:22:57,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:22:57,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 10:22:57,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:22:57,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:22:57,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:22:57,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:22:57,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:22:57,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 10:22:57,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:22:57,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:22:57,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:22:57,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 10:22:57,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:22:57,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:22:57,514 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-14 10:22:57,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818741149] [2020-10-14 10:22:57,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 10:22:57,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-14 10:22:57,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125140413] [2020-10-14 10:22:57,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:22:57,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:22:57,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:22:57,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:22:57,544 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 4 states. [2020-10-14 10:22:57,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:22:57,770 INFO L93 Difference]: Finished difference Result 113 states and 153 transitions. [2020-10-14 10:22:57,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:22:57,772 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-10-14 10:22:57,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:22:57,784 INFO L225 Difference]: With dead ends: 113 [2020-10-14 10:22:57,784 INFO L226 Difference]: Without dead ends: 56 [2020-10-14 10:22:57,789 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:22:57,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-14 10:22:57,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2020-10-14 10:22:57,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-14 10:22:57,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 65 transitions. [2020-10-14 10:22:57,842 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 65 transitions. Word has length 49 [2020-10-14 10:22:57,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:22:57,842 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 65 transitions. [2020-10-14 10:22:57,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:22:57,843 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 65 transitions. [2020-10-14 10:22:57,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 10:22:57,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:22:57,846 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:22:57,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 10:22:57,846 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:22:57,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:22:57,847 INFO L82 PathProgramCache]: Analyzing trace with hash 326036425, now seen corresponding path program 1 times [2020-10-14 10:22:57,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:22:57,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [787376836] [2020-10-14 10:22:57,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:22:57,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:22:57,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:22:57,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:22:59,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:22:59,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 10:22:59,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:22:59,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1263 [2020-10-14 10:22:59,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:22:59,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:22:59,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 10:22:59,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 10:22:59,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 10:22:59,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:22:59,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:22:59,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:22:59,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:22:59,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:22:59,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:22:59,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:22:59,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:22:59,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:22:59,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:22:59,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:22:59,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:22:59,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:22:59,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:22:59,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:22:59,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:22:59,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:22:59,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:22:59,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:22:59,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:22:59,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:22:59,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:22:59,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:22:59,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:22:59,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:22:59,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:22:59,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:22:59,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 10:22:59,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:22:59,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:22:59,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:22:59,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:22:59,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:22:59,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:22:59,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:22:59,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:22:59,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:22:59,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:22:59,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:22:59,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:22:59,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 10:22:59,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:22:59,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:22:59,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:22:59,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:22:59,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 10:22:59,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:22:59,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-14 10:22:59,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:22:59,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:22:59,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 10:22:59,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:22:59,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 10:22:59,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:22:59,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 10:22:59,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:22:59,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:22:59,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:22:59,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:22:59,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:22:59,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:22:59,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:22:59,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:22:59,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:22:59,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:22:59,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 10:22:59,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:22:59,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:22:59,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:22:59,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:22:59,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:22:59,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:22:59,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:22:59,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 10:22:59,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:22:59,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:22:59,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 10:22:59,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:22:59,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 10:22:59,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:22:59,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 10:22:59,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:22:59,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:22:59,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:22:59,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:22:59,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:22:59,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:22:59,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:22:59,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:22:59,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:22:59,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:22:59,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 10:22:59,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:22:59,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 10:22:59,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:22:59,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:22:59,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:22:59,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 10:22:59,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:22:59,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 10:22:59,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:22:59,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:22:59,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:22:59,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 10:22:59,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 10:22:59,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:22:59,536 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-14 10:22:59,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [787376836] [2020-10-14 10:22:59,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 10:22:59,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 10:22:59,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828324806] [2020-10-14 10:22:59,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 10:22:59,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:22:59,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 10:22:59,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-14 10:22:59,540 INFO L87 Difference]: Start difference. First operand 54 states and 65 transitions. Second operand 11 states. [2020-10-14 10:23:00,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:23:00,059 INFO L93 Difference]: Finished difference Result 84 states and 103 transitions. [2020-10-14 10:23:00,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 10:23:00,060 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 49 [2020-10-14 10:23:00,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:23:00,062 INFO L225 Difference]: With dead ends: 84 [2020-10-14 10:23:00,062 INFO L226 Difference]: Without dead ends: 63 [2020-10-14 10:23:00,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2020-10-14 10:23:00,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-14 10:23:00,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 55. [2020-10-14 10:23:00,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-14 10:23:00,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 66 transitions. [2020-10-14 10:23:00,077 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 66 transitions. Word has length 49 [2020-10-14 10:23:00,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:23:00,079 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 66 transitions. [2020-10-14 10:23:00,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 10:23:00,079 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 66 transitions. [2020-10-14 10:23:00,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 10:23:00,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:23:00,081 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:23:00,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 10:23:00,081 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:23:00,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:23:00,082 INFO L82 PathProgramCache]: Analyzing trace with hash -167606976, now seen corresponding path program 1 times [2020-10-14 10:23:00,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:23:00,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [5184871] [2020-10-14 10:23:00,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:23:00,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:00,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:00,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:00,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 10:23:00,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:00,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-14 10:23:00,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:00,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:00,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 10:23:00,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-14 10:23:00,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 10:23:00,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:00,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:23:00,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:00,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:00,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:00,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:23:00,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:00,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:00,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:00,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:00,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:00,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:00,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:00,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:00,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:23:00,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:00,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:00,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:00,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:00,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:00,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:00,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:00,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:00,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:00,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:00,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:00,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:00,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 10:23:00,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:00,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:00,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:00,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:23:00,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:00,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:00,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:00,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:00,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:00,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:00,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:00,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:00,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 10:23:00,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:00,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:00,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:00,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 10:23:00,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:00,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 10:23:00,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:00,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:00,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:00,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:00,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:00,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:00,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 10:23:00,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:00,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:00,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:00,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:00,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:00,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:00,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:00,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:00,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:00,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:00,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:00,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:00,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:23:00,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:00,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:00,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:00,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:00,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:00,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:00,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:00,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:00,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:00,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:00,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:00,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:00,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 10:23:00,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:00,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:00,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:00,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:00,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:00,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:00,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:00,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:00,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:00,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:00,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:00,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:00,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 10:23:00,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:00,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:00,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:00,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 10:23:00,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:00,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 10:23:00,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:00,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:00,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:23:00,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:00,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 10:23:00,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:00,417 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 10:23:00,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [5184871] [2020-10-14 10:23:00,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:23:00,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 10:23:00,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960634018] [2020-10-14 10:23:00,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 10:23:00,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:23:00,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 10:23:00,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 10:23:00,420 INFO L87 Difference]: Start difference. First operand 55 states and 66 transitions. Second operand 9 states. [2020-10-14 10:23:00,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:23:00,781 INFO L93 Difference]: Finished difference Result 75 states and 91 transitions. [2020-10-14 10:23:00,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 10:23:00,782 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 50 [2020-10-14 10:23:00,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:23:00,784 INFO L225 Difference]: With dead ends: 75 [2020-10-14 10:23:00,784 INFO L226 Difference]: Without dead ends: 73 [2020-10-14 10:23:00,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-14 10:23:00,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-14 10:23:00,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 63. [2020-10-14 10:23:00,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-14 10:23:00,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 74 transitions. [2020-10-14 10:23:00,798 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 74 transitions. Word has length 50 [2020-10-14 10:23:00,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:23:00,799 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 74 transitions. [2020-10-14 10:23:00,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 10:23:00,799 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 74 transitions. [2020-10-14 10:23:00,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 10:23:00,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:23:00,801 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:23:00,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 10:23:00,801 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:23:00,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:23:00,801 INFO L82 PathProgramCache]: Analyzing trace with hash -892917441, now seen corresponding path program 1 times [2020-10-14 10:23:00,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:23:00,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1912047832] [2020-10-14 10:23:00,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:23:00,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:00,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:00,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:01,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:01,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 10:23:01,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:23:01,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1105 [2020-10-14 10:23:01,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:01,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:01,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 10:23:01,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 10:23:01,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 10:23:01,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:01,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:23:01,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:01,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:01,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:01,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:23:01,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:01,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:01,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:01,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:01,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:01,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:01,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:01,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:01,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:23:01,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:01,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:01,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:01,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:01,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:01,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:01,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:01,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:01,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:01,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:01,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:01,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:01,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 10:23:01,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:01,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:01,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:01,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:23:01,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:01,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:01,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:01,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:01,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:01,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:01,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:01,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:02,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 10:23:02,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:02,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:02,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:02,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 10:23:02,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:02,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-14 10:23:02,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:02,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:02,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 10:23:02,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:02,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 10:23:02,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:02,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 10:23:02,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:02,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:02,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:02,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:02,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:02,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 10:23:02,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:02,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:02,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 10:23:02,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:02,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 10:23:02,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:02,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:23:02,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:02,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:02,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:02,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:02,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:02,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 10:23:02,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:02,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:02,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 10:23:02,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:02,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 10:23:02,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:02,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 10:23:02,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:02,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:02,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:02,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:02,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:02,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 10:23:02,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:02,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:02,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 10:23:02,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:02,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 10:23:02,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:02,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 10:23:02,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:02,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:02,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:02,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:02,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 10:23:02,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:23:02,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 10:23:02,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:02,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:02,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 10:23:02,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 10:23:02,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 10:23:02,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:02,475 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-14 10:23:02,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1912047832] [2020-10-14 10:23:02,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 10:23:02,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 10:23:02,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600680965] [2020-10-14 10:23:02,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 10:23:02,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:23:02,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 10:23:02,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-14 10:23:02,479 INFO L87 Difference]: Start difference. First operand 63 states and 74 transitions. Second operand 14 states. [2020-10-14 10:23:03,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:23:03,297 INFO L93 Difference]: Finished difference Result 97 states and 118 transitions. [2020-10-14 10:23:03,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 10:23:03,298 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 52 [2020-10-14 10:23:03,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:23:03,300 INFO L225 Difference]: With dead ends: 97 [2020-10-14 10:23:03,300 INFO L226 Difference]: Without dead ends: 76 [2020-10-14 10:23:03,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=125, Invalid=577, Unknown=0, NotChecked=0, Total=702 [2020-10-14 10:23:03,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-14 10:23:03,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 68. [2020-10-14 10:23:03,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-14 10:23:03,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 81 transitions. [2020-10-14 10:23:03,312 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 81 transitions. Word has length 52 [2020-10-14 10:23:03,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:23:03,313 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 81 transitions. [2020-10-14 10:23:03,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 10:23:03,313 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 81 transitions. [2020-10-14 10:23:03,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 10:23:03,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:23:03,315 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2020-10-14 10:23:03,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 10:23:03,316 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:23:03,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:23:03,316 INFO L82 PathProgramCache]: Analyzing trace with hash -799051767, now seen corresponding path program 2 times [2020-10-14 10:23:03,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:23:03,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [895686169] [2020-10-14 10:23:03,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:23:03,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:03,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:03,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:04,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:04,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 10:23:04,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:23:04,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 880 [2020-10-14 10:23:04,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:04,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:04,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:23:04,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-14 10:23:04,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 10:23:04,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:04,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:23:04,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:04,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:04,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:04,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:23:04,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:04,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:04,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:04,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:04,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:04,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:04,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:04,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:04,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:23:04,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:04,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:04,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:04,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:04,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:04,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:04,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:04,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:04,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:04,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:04,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:04,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:04,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 10:23:04,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:04,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:04,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:04,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:23:04,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:04,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:04,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:04,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:04,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:04,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:04,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:04,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:04,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 10:23:04,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:04,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:04,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:04,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 10:23:04,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:04,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 10:23:04,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:04,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:04,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:04,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:04,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:04,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:04,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 10:23:04,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:04,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:04,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:04,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:04,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:04,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:04,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:04,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:04,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:04,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:04,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:04,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:04,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:23:04,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:04,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:04,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:04,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:04,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:04,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:04,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:04,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:04,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:04,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:04,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:04,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:04,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 10:23:04,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:04,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:04,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:04,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:04,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:04,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:04,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:04,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:04,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:04,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:04,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:04,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:04,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 10:23:04,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:04,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:04,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:04,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 10:23:04,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:04,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 10:23:04,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:04,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:04,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:23:04,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 10:23:04,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 10:23:04,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:04,341 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 10:23:04,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [895686169] [2020-10-14 10:23:04,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:23:04,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 10:23:04,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862776680] [2020-10-14 10:23:04,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 10:23:04,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:23:04,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 10:23:04,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-14 10:23:04,344 INFO L87 Difference]: Start difference. First operand 68 states and 81 transitions. Second operand 7 states. [2020-10-14 10:23:04,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:23:04,611 INFO L93 Difference]: Finished difference Result 117 states and 143 transitions. [2020-10-14 10:23:04,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 10:23:04,611 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 55 [2020-10-14 10:23:04,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:23:04,613 INFO L225 Difference]: With dead ends: 117 [2020-10-14 10:23:04,613 INFO L226 Difference]: Without dead ends: 81 [2020-10-14 10:23:04,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-10-14 10:23:04,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-14 10:23:04,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 72. [2020-10-14 10:23:04,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-14 10:23:04,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 86 transitions. [2020-10-14 10:23:04,625 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 86 transitions. Word has length 55 [2020-10-14 10:23:04,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:23:04,625 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 86 transitions. [2020-10-14 10:23:04,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 10:23:04,626 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 86 transitions. [2020-10-14 10:23:04,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 10:23:04,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:23:04,627 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2020-10-14 10:23:04,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 10:23:04,628 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:23:04,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:23:04,628 INFO L82 PathProgramCache]: Analyzing trace with hash -960042091, now seen corresponding path program 1 times [2020-10-14 10:23:04,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:23:04,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227196755] [2020-10-14 10:23:04,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:23:04,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:04,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:04,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:04,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:04,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:05,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:05,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:05,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:07,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:07,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 10:23:07,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 10:23:07,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2507 [2020-10-14 10:23:07,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:07,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:07,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 10:23:07,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-14 10:23:07,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 10:23:07,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:07,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:23:07,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:07,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:07,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:07,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:23:07,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:07,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:23:07,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:07,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:07,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:07,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:07,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:07,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:07,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:23:07,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:07,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:07,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:07,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:07,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:07,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:07,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:07,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:07,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:07,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:07,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:07,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:07,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 10:23:07,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:07,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:07,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:07,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:23:07,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:07,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:07,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:07,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:07,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:07,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:07,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:07,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:07,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 10:23:07,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:07,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:07,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:07,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 10:23:07,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:07,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 10:23:07,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:07,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:07,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:07,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:07,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:07,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:07,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 10:23:07,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:07,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:07,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:07,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:07,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:07,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:07,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:07,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:07,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:07,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:07,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:07,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:07,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:23:07,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:07,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:07,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:07,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:07,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:07,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:07,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:07,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:07,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:07,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:07,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:07,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:07,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 10:23:07,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:07,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:07,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:07,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:07,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:07,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:07,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:07,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:07,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:07,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:07,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:07,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:07,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 10:23:07,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:07,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:07,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:07,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:07,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 10:23:07,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:23:07,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 10:23:07,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:07,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:07,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 10:23:07,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:07,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 10:23:07,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:07,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 10:23:07,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:07,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:07,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:07,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:07,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:07,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:23:07,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:07,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:07,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:23:07,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:07,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 10:23:07,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:07,431 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 10:23:07,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227196755] [2020-10-14 10:23:07,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:23:07,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-14 10:23:07,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216231537] [2020-10-14 10:23:07,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 10:23:07,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:23:07,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 10:23:07,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-14 10:23:07,434 INFO L87 Difference]: Start difference. First operand 72 states and 86 transitions. Second operand 13 states. [2020-10-14 10:23:08,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:23:08,144 INFO L93 Difference]: Finished difference Result 98 states and 120 transitions. [2020-10-14 10:23:08,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 10:23:08,144 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 57 [2020-10-14 10:23:08,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:23:08,146 INFO L225 Difference]: With dead ends: 98 [2020-10-14 10:23:08,147 INFO L226 Difference]: Without dead ends: 96 [2020-10-14 10:23:08,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2020-10-14 10:23:08,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-14 10:23:08,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 85. [2020-10-14 10:23:08,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-14 10:23:08,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 103 transitions. [2020-10-14 10:23:08,173 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 103 transitions. Word has length 57 [2020-10-14 10:23:08,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:23:08,173 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 103 transitions. [2020-10-14 10:23:08,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 10:23:08,173 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 103 transitions. [2020-10-14 10:23:08,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 10:23:08,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:23:08,175 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2020-10-14 10:23:08,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 10:23:08,178 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:23:08,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:23:08,178 INFO L82 PathProgramCache]: Analyzing trace with hash -958195049, now seen corresponding path program 1 times [2020-10-14 10:23:08,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:23:08,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [459400221] [2020-10-14 10:23:08,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:23:08,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:08,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:08,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:08,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:08,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:09,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:09,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 10:23:09,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:23:09,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 839 [2020-10-14 10:23:09,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:09,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:09,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 10:23:09,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-14 10:23:09,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 10:23:09,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:09,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:23:09,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:09,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:09,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:09,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:23:09,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:09,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:09,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:09,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:09,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:09,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:09,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:09,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 10:23:09,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:23:09,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:09,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:09,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:09,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:09,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:09,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:23:09,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:09,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:09,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:09,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:09,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:09,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:09,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 10:23:09,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:09,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:09,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:09,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:23:09,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:09,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:09,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:09,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:09,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:09,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:09,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:09,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:09,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 10:23:09,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:09,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:09,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:09,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 10:23:09,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:09,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 10:23:09,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:09,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:09,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:09,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:09,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:09,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:09,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 10:23:09,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:09,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:09,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:09,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:09,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:09,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:23:09,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:09,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:09,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:09,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:09,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:09,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:09,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:23:09,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:09,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:09,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:09,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:09,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:09,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:09,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:09,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:09,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:09,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:09,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:09,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:09,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 10:23:09,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:09,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:09,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:09,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:09,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:09,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:09,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:09,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:09,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:09,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:09,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:09,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:09,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 10:23:09,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:09,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:09,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:09,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 10:23:09,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:09,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 10:23:09,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:09,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:09,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 10:23:09,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:09,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 10:23:09,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:09,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 10:23:09,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:09,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:09,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:09,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:09,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:09,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:23:09,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:09,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:09,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:23:09,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:09,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 10:23:09,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:09,259 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 10:23:09,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [459400221] [2020-10-14 10:23:09,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:23:09,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-14 10:23:09,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599110567] [2020-10-14 10:23:09,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 10:23:09,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:23:09,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 10:23:09,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-14 10:23:09,263 INFO L87 Difference]: Start difference. First operand 85 states and 103 transitions. Second operand 11 states. [2020-10-14 10:23:09,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:23:09,830 INFO L93 Difference]: Finished difference Result 120 states and 150 transitions. [2020-10-14 10:23:09,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 10:23:09,830 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-10-14 10:23:09,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:23:09,834 INFO L225 Difference]: With dead ends: 120 [2020-10-14 10:23:09,834 INFO L226 Difference]: Without dead ends: 106 [2020-10-14 10:23:09,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-10-14 10:23:09,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-14 10:23:09,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 97. [2020-10-14 10:23:09,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-14 10:23:09,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 117 transitions. [2020-10-14 10:23:09,856 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 117 transitions. Word has length 57 [2020-10-14 10:23:09,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:23:09,857 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 117 transitions. [2020-10-14 10:23:09,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 10:23:09,857 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 117 transitions. [2020-10-14 10:23:09,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 10:23:09,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:23:09,863 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2020-10-14 10:23:09,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 10:23:09,864 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:23:09,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:23:09,864 INFO L82 PathProgramCache]: Analyzing trace with hash 635278677, now seen corresponding path program 1 times [2020-10-14 10:23:09,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:23:09,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1156736800] [2020-10-14 10:23:09,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:23:09,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:09,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:10,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:10,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:10,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:11,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:14,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:14,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 10:23:14,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:23:14,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4421 [2020-10-14 10:23:14,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:14,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:14,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 10:23:14,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 10:23:14,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 10:23:14,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:14,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:23:14,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:14,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:14,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:14,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:23:14,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:14,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:14,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:14,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:14,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:14,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:14,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:14,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:14,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:23:14,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:14,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:14,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:14,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:14,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:14,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:14,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:14,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:14,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:14,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:14,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:14,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:14,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 10:23:14,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:14,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:14,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:14,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:23:14,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:14,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:14,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:14,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:14,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:14,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:14,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:14,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:14,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 10:23:14,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:14,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:14,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:14,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 10:23:14,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:14,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-14 10:23:14,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:14,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:14,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 10:23:14,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:14,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 10:23:14,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:14,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 10:23:14,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:14,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:14,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:14,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:14,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:14,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 10:23:14,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:14,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:14,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 10:23:14,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:14,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 10:23:14,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:15,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:23:15,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:15,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:15,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:15,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:15,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:15,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 10:23:15,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:15,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:15,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 10:23:15,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:15,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 10:23:15,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:15,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 10:23:15,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:15,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:15,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:15,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:15,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:15,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 10:23:15,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:15,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:15,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 10:23:15,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:15,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 10:23:15,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:15,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 10:23:15,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:15,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:15,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:15,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:15,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:15,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:15,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:15,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 10:23:15,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:23:15,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 576 [2020-10-14 10:23:15,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:15,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:15,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 10:23:15,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 10:23:15,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 10:23:15,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:16,060 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-14 10:23:16,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1156736800] [2020-10-14 10:23:16,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 10:23:16,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 10:23:16,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540197921] [2020-10-14 10:23:16,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 10:23:16,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:23:16,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 10:23:16,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2020-10-14 10:23:16,065 INFO L87 Difference]: Start difference. First operand 97 states and 117 transitions. Second operand 19 states. [2020-10-14 10:23:16,904 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2020-10-14 10:23:17,184 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-10-14 10:23:17,415 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2020-10-14 10:23:18,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:23:18,686 INFO L93 Difference]: Finished difference Result 152 states and 191 transitions. [2020-10-14 10:23:18,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 10:23:18,687 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 58 [2020-10-14 10:23:18,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:23:18,689 INFO L225 Difference]: With dead ends: 152 [2020-10-14 10:23:18,689 INFO L226 Difference]: Without dead ends: 129 [2020-10-14 10:23:18,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=221, Invalid=1185, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 10:23:18,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-14 10:23:18,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 104. [2020-10-14 10:23:18,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-14 10:23:18,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 127 transitions. [2020-10-14 10:23:18,705 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 127 transitions. Word has length 58 [2020-10-14 10:23:18,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:23:18,706 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 127 transitions. [2020-10-14 10:23:18,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 10:23:18,706 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 127 transitions. [2020-10-14 10:23:18,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 10:23:18,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:23:18,707 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2020-10-14 10:23:18,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 10:23:18,708 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:23:18,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:23:18,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1252987423, now seen corresponding path program 1 times [2020-10-14 10:23:18,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:23:18,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157092000] [2020-10-14 10:23:18,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:23:18,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:18,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:18,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:18,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:18,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:19,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:19,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:19,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:21,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:21,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 10:23:21,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 10:23:21,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2539 [2020-10-14 10:23:21,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:21,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:21,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 10:23:21,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-14 10:23:21,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 10:23:21,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:21,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:23:21,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:21,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:21,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:21,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:23:21,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:21,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:21,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:21,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:21,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:21,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:21,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:21,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:21,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:23:21,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:21,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:21,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:21,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:21,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:21,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:21,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:21,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:21,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:21,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:21,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:21,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:21,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 10:23:21,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:21,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:21,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:21,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:23:21,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:21,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:21,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:21,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:21,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:21,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:21,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:21,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:21,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 10:23:21,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:21,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:21,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:21,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 10:23:21,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:21,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 10:23:21,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:21,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:21,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:21,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:21,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:21,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:21,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 10:23:21,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:21,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:21,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:21,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:21,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:21,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:21,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:21,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:21,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:21,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:21,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:21,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:21,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:23:21,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:21,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:21,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:21,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:21,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:21,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:21,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:21,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:21,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:21,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:21,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:21,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:21,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 10:23:21,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:21,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:21,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:21,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:21,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:21,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:21,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:21,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:21,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:21,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:21,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:21,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:21,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 10:23:21,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:21,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:21,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:21,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:21,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 10:23:21,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:23:21,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 10:23:21,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:21,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:21,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 10:23:21,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:21,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 10:23:21,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:21,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 10:23:21,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:21,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:21,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:21,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:21,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:21,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:23:21,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:21,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:21,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:23:21,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:21,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 10:23:21,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:21,509 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-14 10:23:21,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [157092000] [2020-10-14 10:23:21,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 10:23:21,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 10:23:21,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912790002] [2020-10-14 10:23:21,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 10:23:21,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:23:21,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 10:23:21,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-14 10:23:21,511 INFO L87 Difference]: Start difference. First operand 104 states and 127 transitions. Second operand 13 states. [2020-10-14 10:23:22,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:23:22,192 INFO L93 Difference]: Finished difference Result 122 states and 150 transitions. [2020-10-14 10:23:22,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 10:23:22,193 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 60 [2020-10-14 10:23:22,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:23:22,194 INFO L225 Difference]: With dead ends: 122 [2020-10-14 10:23:22,194 INFO L226 Difference]: Without dead ends: 120 [2020-10-14 10:23:22,195 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2020-10-14 10:23:22,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-14 10:23:22,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 91. [2020-10-14 10:23:22,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-14 10:23:22,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 109 transitions. [2020-10-14 10:23:22,216 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 109 transitions. Word has length 60 [2020-10-14 10:23:22,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:23:22,217 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 109 transitions. [2020-10-14 10:23:22,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 10:23:22,218 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 109 transitions. [2020-10-14 10:23:22,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-14 10:23:22,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:23:22,219 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2020-10-14 10:23:22,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 10:23:22,219 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:23:22,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:23:22,220 INFO L82 PathProgramCache]: Analyzing trace with hash -15954976, now seen corresponding path program 1 times [2020-10-14 10:23:22,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:23:22,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359861739] [2020-10-14 10:23:22,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:23:22,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:22,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:22,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:22,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:22,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 10:23:22,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:23:22,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 668 [2020-10-14 10:23:22,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:22,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:22,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 10:23:22,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-14 10:23:22,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 10:23:22,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:22,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:23:22,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:22,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:22,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:22,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:23:22,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:22,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:22,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:22,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:22,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:22,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:22,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:22,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 10:23:22,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:23:22,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:22,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:22,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:22,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:22,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:22,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:22,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:22,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:22,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:22,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:22,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:22,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:22,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 10:23:22,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:22,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:22,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:22,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:23:22,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:22,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:22,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:22,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:22,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:22,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:23,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:23,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 10:23:23,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 10:23:23,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:23,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:23,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:23,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 10:23:23,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:23,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 10:23:23,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:23,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:23,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:23,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:23,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:23,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:23,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 10:23:23,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:23,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:23,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:23,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:23,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:23,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:23,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:23,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:23,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:23,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:23,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:23,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:23,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:23:23,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:23,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:23,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:23,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:23,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:23,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:23,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:23,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:23,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:23,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:23,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:23,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:23,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 10:23:23,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:23,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:23,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:23,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:23,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:23,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:23,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:23,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:23,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:23,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:23,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:23,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:23,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 10:23:23,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:23,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:23,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:23,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 10:23:23,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:23,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 10:23:23,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:23,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:23,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 10:23:23,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:23,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 10:23:23,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:23,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 10:23:23,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:23,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:23,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:23,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:23,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:23,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:23,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:23,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:23,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:23:23,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:23,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 10:23:23,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:23,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 10:23:23,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:23,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:23,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:23,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:23,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:23,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:23:23,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:23,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:23,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:23:23,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:23,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 10:23:23,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:23,130 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-14 10:23:23,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359861739] [2020-10-14 10:23:23,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:23:23,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-14 10:23:23,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789244386] [2020-10-14 10:23:23,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 10:23:23,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:23:23,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 10:23:23,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-14 10:23:23,134 INFO L87 Difference]: Start difference. First operand 91 states and 109 transitions. Second operand 11 states. [2020-10-14 10:23:23,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:23:23,657 INFO L93 Difference]: Finished difference Result 107 states and 129 transitions. [2020-10-14 10:23:23,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 10:23:23,658 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 64 [2020-10-14 10:23:23,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:23:23,659 INFO L225 Difference]: With dead ends: 107 [2020-10-14 10:23:23,660 INFO L226 Difference]: Without dead ends: 105 [2020-10-14 10:23:23,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2020-10-14 10:23:23,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-14 10:23:23,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 99. [2020-10-14 10:23:23,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-14 10:23:23,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 119 transitions. [2020-10-14 10:23:23,679 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 119 transitions. Word has length 64 [2020-10-14 10:23:23,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:23:23,680 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 119 transitions. [2020-10-14 10:23:23,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 10:23:23,680 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 119 transitions. [2020-10-14 10:23:23,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-14 10:23:23,683 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:23:23,683 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2020-10-14 10:23:23,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 10:23:23,683 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:23:23,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:23:23,684 INFO L82 PathProgramCache]: Analyzing trace with hash -14107934, now seen corresponding path program 1 times [2020-10-14 10:23:23,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:23:23,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1158058008] [2020-10-14 10:23:23,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:23:23,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:23,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:23,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:23,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:23,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 10:23:23,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:23:23,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-10-14 10:23:23,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:23,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:23,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 10:23:23,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-14 10:23:23,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 10:23:23,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:24,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:23:24,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:24,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:24,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:24,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:23:24,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:24,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:23:24,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:24,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:24,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:24,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:24,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:24,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:24,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:23:24,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:24,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:24,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:24,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:24,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:24,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:24,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:24,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:24,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:24,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:24,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:24,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:24,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 10:23:24,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:24,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:24,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:24,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:23:24,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:24,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:24,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:24,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:24,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:24,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:24,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:24,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:24,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 10:23:24,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:24,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:24,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:24,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 10:23:24,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:24,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:23:24,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:24,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:24,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:24,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:24,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:24,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:24,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 10:23:24,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:24,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:24,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:24,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:24,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:24,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:24,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:24,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:24,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:24,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:24,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:24,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:24,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:23:24,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:24,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:24,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:24,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:24,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:24,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:24,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:24,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:24,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:24,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:24,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:24,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:24,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 10:23:24,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:24,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:24,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:24,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:24,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:24,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:24,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:24,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:24,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:24,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:24,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:24,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:24,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 10:23:24,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:24,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:24,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:24,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 10:23:24,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:24,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 10:23:24,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:24,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:24,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 10:23:24,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:24,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 10:23:24,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:24,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 10:23:24,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:24,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:24,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:24,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:24,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:24,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:24,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:24,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:24,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:23:24,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:24,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 10:23:24,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:24,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 10:23:24,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:24,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:24,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:24,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:24,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:24,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:23:24,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:24,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:24,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:23:24,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:24,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 10:23:24,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:24,147 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-14 10:23:24,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1158058008] [2020-10-14 10:23:24,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:23:24,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-14 10:23:24,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427571135] [2020-10-14 10:23:24,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 10:23:24,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:23:24,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 10:23:24,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-14 10:23:24,149 INFO L87 Difference]: Start difference. First operand 99 states and 119 transitions. Second operand 11 states. [2020-10-14 10:23:24,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:23:24,626 INFO L93 Difference]: Finished difference Result 137 states and 169 transitions. [2020-10-14 10:23:24,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 10:23:24,626 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 64 [2020-10-14 10:23:24,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:23:24,627 INFO L225 Difference]: With dead ends: 137 [2020-10-14 10:23:24,628 INFO L226 Difference]: Without dead ends: 126 [2020-10-14 10:23:24,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2020-10-14 10:23:24,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-14 10:23:24,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 118. [2020-10-14 10:23:24,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-14 10:23:24,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 146 transitions. [2020-10-14 10:23:24,640 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 146 transitions. Word has length 64 [2020-10-14 10:23:24,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:23:24,640 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 146 transitions. [2020-10-14 10:23:24,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 10:23:24,641 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 146 transitions. [2020-10-14 10:23:24,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-14 10:23:24,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:23:24,642 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2020-10-14 10:23:24,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 10:23:24,642 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:23:24,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:23:24,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1517997121, now seen corresponding path program 1 times [2020-10-14 10:23:24,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:23:24,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589442280] [2020-10-14 10:23:24,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:23:24,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:24,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:24,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:25,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:25,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:26,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:26,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:28,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:28,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 10:23:28,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 10:23:28,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4198 [2020-10-14 10:23:28,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:28,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:28,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 10:23:28,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-14 10:23:28,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 10:23:28,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:28,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:23:28,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:28,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:28,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:28,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:23:28,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:28,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:28,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:28,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:28,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:28,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:28,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:28,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:28,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:23:28,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:28,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:28,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:28,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:28,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:28,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:28,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:28,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:28,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:28,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:28,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:28,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 10:23:28,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 10:23:28,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:28,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:28,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:28,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:23:28,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:28,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:28,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:28,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:28,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:28,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:28,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:28,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:28,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 10:23:28,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:28,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:28,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:28,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 10:23:28,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:28,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:23:28,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:28,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:28,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:28,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:28,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:28,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:28,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 10:23:28,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:28,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:28,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:28,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:28,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:28,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:28,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:28,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:28,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:28,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:28,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:28,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:28,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:23:28,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:28,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:28,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:28,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:28,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:28,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:28,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:28,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:28,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:28,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:28,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:28,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:28,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 10:23:28,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:28,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:28,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:28,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:28,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:28,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 10:23:28,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:28,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:28,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:28,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:28,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:28,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:28,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 10:23:28,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:28,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:28,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:28,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:29,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:29,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 10:23:29,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:23:29,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-14 10:23:29,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:29,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:29,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 10:23:29,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:29,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 10:23:29,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 10:23:29,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 10:23:29,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:29,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:29,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:29,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:29,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:29,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:29,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:29,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:29,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:23:29,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:29,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 10:23:29,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:29,187 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-14 10:23:29,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589442280] [2020-10-14 10:23:29,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:23:29,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-14 10:23:29,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108315857] [2020-10-14 10:23:29,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 10:23:29,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:23:29,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 10:23:29,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-14 10:23:29,190 INFO L87 Difference]: Start difference. First operand 118 states and 146 transitions. Second operand 11 states. [2020-10-14 10:23:29,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:23:29,789 INFO L93 Difference]: Finished difference Result 145 states and 176 transitions. [2020-10-14 10:23:29,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 10:23:29,789 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 63 [2020-10-14 10:23:29,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:23:29,791 INFO L225 Difference]: With dead ends: 145 [2020-10-14 10:23:29,791 INFO L226 Difference]: Without dead ends: 127 [2020-10-14 10:23:29,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2020-10-14 10:23:29,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-14 10:23:29,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 111. [2020-10-14 10:23:29,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-14 10:23:29,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 136 transitions. [2020-10-14 10:23:29,807 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 136 transitions. Word has length 63 [2020-10-14 10:23:29,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:23:29,807 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 136 transitions. [2020-10-14 10:23:29,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 10:23:29,808 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 136 transitions. [2020-10-14 10:23:29,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-14 10:23:29,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:23:29,810 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 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] [2020-10-14 10:23:29,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 10:23:29,810 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:23:29,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:23:29,811 INFO L82 PathProgramCache]: Analyzing trace with hash 87824619, now seen corresponding path program 2 times [2020-10-14 10:23:29,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:23:29,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [268164431] [2020-10-14 10:23:29,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:23:29,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:29,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:29,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:29,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:30,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:31,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:31,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:31,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:31,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:32,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:33,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:34,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:34,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 10:23:34,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 10:23:34,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 10:23:34,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:34,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:34,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 10:23:34,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-14 10:23:34,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 10:23:34,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:34,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:23:34,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:34,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:34,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:34,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:23:34,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:34,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:34,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:34,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:34,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:34,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:34,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:34,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:34,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:23:34,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:34,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:34,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:34,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:34,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:34,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:23:34,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:34,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:34,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:34,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:34,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:34,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:34,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 10:23:34,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:34,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:34,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:34,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:23:34,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:34,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:34,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:34,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:34,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:34,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:34,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:34,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:34,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 10:23:34,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:34,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:34,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:34,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 10:23:34,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:34,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 10:23:34,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:34,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:34,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:34,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:34,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:34,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:34,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 10:23:34,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:34,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:34,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:34,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:34,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:34,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 10:23:34,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:34,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:34,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:34,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:34,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:34,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:34,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:23:34,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:34,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:34,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:34,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:34,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:34,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:34,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:34,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:34,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:34,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:34,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:34,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:34,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 10:23:34,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:34,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:34,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:34,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:34,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:34,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 10:23:34,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:34,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:34,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:34,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:34,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:34,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:34,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 10:23:34,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:34,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:34,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:34,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:35,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:35,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 10:23:35,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:23:35,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-14 10:23:35,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:35,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:35,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 10:23:35,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 10:23:35,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 10:23:35,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:35,064 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-14 10:23:35,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [268164431] [2020-10-14 10:23:35,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 10:23:35,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 10:23:35,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964970155] [2020-10-14 10:23:35,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 10:23:35,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:23:35,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 10:23:35,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-14 10:23:35,066 INFO L87 Difference]: Start difference. First operand 111 states and 136 transitions. Second operand 9 states. [2020-10-14 10:23:35,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:23:35,478 INFO L93 Difference]: Finished difference Result 216 states and 271 transitions. [2020-10-14 10:23:35,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 10:23:35,480 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-10-14 10:23:35,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:23:35,481 INFO L225 Difference]: With dead ends: 216 [2020-10-14 10:23:35,482 INFO L226 Difference]: Without dead ends: 152 [2020-10-14 10:23:35,482 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-14 10:23:35,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-10-14 10:23:35,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 133. [2020-10-14 10:23:35,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-14 10:23:35,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 168 transitions. [2020-10-14 10:23:35,496 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 168 transitions. Word has length 64 [2020-10-14 10:23:35,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:23:35,497 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 168 transitions. [2020-10-14 10:23:35,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 10:23:35,497 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 168 transitions. [2020-10-14 10:23:35,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 10:23:35,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:23:35,498 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2020-10-14 10:23:35,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 10:23:35,498 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:23:35,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:23:35,499 INFO L82 PathProgramCache]: Analyzing trace with hash 445762326, now seen corresponding path program 1 times [2020-10-14 10:23:35,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:23:35,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [877415870] [2020-10-14 10:23:35,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:23:35,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:35,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:35,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:36,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:36,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:37,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:37,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 10:23:37,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:23:37,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1620 [2020-10-14 10:23:37,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:37,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:37,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 10:23:37,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-14 10:23:37,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 10:23:37,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:37,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:23:37,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:37,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:37,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:37,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:23:37,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:37,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:37,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:37,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:37,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:37,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:37,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:37,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:37,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:23:37,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:37,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:37,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:37,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:37,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:37,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 10:23:37,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:37,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:37,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:37,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:37,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:37,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:37,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 10:23:37,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:37,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:37,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:37,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:23:37,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:37,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 10:23:37,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:37,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:37,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:37,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:37,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:37,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:37,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 10:23:37,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:37,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:37,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:37,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 10:23:37,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:37,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:23:37,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:37,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:37,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:37,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:37,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:37,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:37,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 10:23:37,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:37,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:37,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:37,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:37,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:37,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:37,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:37,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:37,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:37,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:37,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:37,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:37,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:23:37,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:37,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:37,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:37,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:37,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:37,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:37,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:37,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:37,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:37,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:37,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:37,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:37,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 10:23:37,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:37,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:37,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:37,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:37,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:37,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 10:23:37,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:37,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:37,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:37,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:37,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:37,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:37,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 10:23:37,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:37,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:37,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:37,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 10:23:37,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:37,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 10:23:37,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:37,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:37,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 10:23:37,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:37,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 10:23:37,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:37,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 10:23:37,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:37,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:37,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:37,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:37,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:37,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:37,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:37,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:37,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:23:37,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:37,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 10:23:37,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:37,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 10:23:37,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:37,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:37,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:37,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:37,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:37,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:37,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:37,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:37,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:23:37,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:37,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 10:23:37,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:37,321 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-14 10:23:37,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [877415870] [2020-10-14 10:23:37,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:23:37,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-14 10:23:37,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86146387] [2020-10-14 10:23:37,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 10:23:37,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:23:37,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 10:23:37,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-14 10:23:37,323 INFO L87 Difference]: Start difference. First operand 133 states and 168 transitions. Second operand 12 states. [2020-10-14 10:23:37,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:23:37,905 INFO L93 Difference]: Finished difference Result 156 states and 194 transitions. [2020-10-14 10:23:37,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 10:23:37,906 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 67 [2020-10-14 10:23:37,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:23:37,907 INFO L225 Difference]: With dead ends: 156 [2020-10-14 10:23:37,908 INFO L226 Difference]: Without dead ends: 145 [2020-10-14 10:23:37,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2020-10-14 10:23:37,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-14 10:23:37,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 124. [2020-10-14 10:23:37,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-14 10:23:37,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 156 transitions. [2020-10-14 10:23:37,922 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 156 transitions. Word has length 67 [2020-10-14 10:23:37,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:23:37,922 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 156 transitions. [2020-10-14 10:23:37,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 10:23:37,923 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 156 transitions. [2020-10-14 10:23:37,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-14 10:23:37,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:23:37,924 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:23:37,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 10:23:37,924 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:23:37,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:23:37,924 INFO L82 PathProgramCache]: Analyzing trace with hash 926487289, now seen corresponding path program 2 times [2020-10-14 10:23:37,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:23:37,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [235956571] [2020-10-14 10:23:37,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:23:37,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:37,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:37,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:38,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:38,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:38,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:39,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:39,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:39,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:39,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:39,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:42,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:42,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 10:23:42,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 10:23:42,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 10:23:42,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:42,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:42,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 10:23:42,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-14 10:23:42,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 10:23:42,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:42,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:23:42,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:42,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:42,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:42,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:23:42,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:42,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:42,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:42,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:42,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:42,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:42,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:42,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:42,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:23:42,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:42,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:42,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:42,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:42,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:42,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:23:42,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:42,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:42,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:42,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:42,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:42,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:42,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 10:23:42,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:42,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:42,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:42,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:23:42,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:42,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:42,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:42,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:42,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:42,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:42,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:42,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:42,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 10:23:42,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:42,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:43,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:43,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 10:23:43,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:43,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 10:23:43,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:43,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:43,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:43,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:43,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:43,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:43,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 10:23:43,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:43,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:43,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:43,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:43,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:43,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:43,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:43,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:43,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:43,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:43,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:43,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:43,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:23:43,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:43,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:43,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:43,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:43,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:43,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:43,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:43,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:43,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:43,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:43,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:43,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:43,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 10:23:43,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:43,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:43,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:43,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:43,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:43,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:43,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:43,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:43,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:43,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:43,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:43,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:43,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 10:23:43,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:43,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:43,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:43,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:43,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:43,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:43,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 10:23:43,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:23:43,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 334 [2020-10-14 10:23:43,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:43,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:43,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 10:23:43,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:43,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 10:23:43,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:43,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 10:23:43,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:43,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:43,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:43,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:43,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:43,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:43,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:43,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:43,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:23:43,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:43,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 10:23:43,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:43,482 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-14 10:23:43,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [235956571] [2020-10-14 10:23:43,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:23:43,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-14 10:23:43,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388583155] [2020-10-14 10:23:43,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 10:23:43,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:23:43,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 10:23:43,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-14 10:23:43,484 INFO L87 Difference]: Start difference. First operand 124 states and 156 transitions. Second operand 12 states. [2020-10-14 10:23:44,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:23:44,115 INFO L93 Difference]: Finished difference Result 162 states and 198 transitions. [2020-10-14 10:23:44,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 10:23:44,115 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 66 [2020-10-14 10:23:44,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:23:44,117 INFO L225 Difference]: With dead ends: 162 [2020-10-14 10:23:44,117 INFO L226 Difference]: Without dead ends: 144 [2020-10-14 10:23:44,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=359, Unknown=0, NotChecked=0, Total=462 [2020-10-14 10:23:44,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-14 10:23:44,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 113. [2020-10-14 10:23:44,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-14 10:23:44,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 139 transitions. [2020-10-14 10:23:44,133 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 139 transitions. Word has length 66 [2020-10-14 10:23:44,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:23:44,134 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 139 transitions. [2020-10-14 10:23:44,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 10:23:44,134 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 139 transitions. [2020-10-14 10:23:44,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 10:23:44,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:23:44,137 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:23:44,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 10:23:44,137 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:23:44,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:23:44,137 INFO L82 PathProgramCache]: Analyzing trace with hash 902840510, now seen corresponding path program 1 times [2020-10-14 10:23:44,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:23:44,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [665386642] [2020-10-14 10:23:44,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:23:44,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:44,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:44,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:44,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 10:23:44,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:44,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-14 10:23:44,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:44,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:44,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 10:23:44,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-14 10:23:44,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 10:23:44,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:44,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:23:44,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:44,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:44,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:44,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:23:44,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:44,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:44,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:44,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:44,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:44,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:44,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:44,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:44,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:23:44,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:44,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:44,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:44,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:44,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:44,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:44,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:44,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:44,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:44,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:44,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:44,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:44,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 10:23:44,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:44,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:44,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:44,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:23:44,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:44,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:44,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:44,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:44,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:44,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:44,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:44,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:44,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 10:23:44,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:44,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:44,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:44,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 10:23:44,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:44,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:23:44,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:44,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:44,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:44,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:44,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:44,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:44,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 10:23:44,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:44,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:44,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:44,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:44,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:44,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:44,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:44,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:44,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:44,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:44,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:44,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:44,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:23:44,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:44,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:44,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:44,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:44,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:44,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:44,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:44,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:44,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:44,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:44,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:44,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:44,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 10:23:44,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:44,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:44,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:44,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:44,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:44,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:44,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:44,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:44,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:44,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:44,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:44,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:44,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 10:23:44,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:44,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:44,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:44,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 10:23:44,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:44,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 10:23:44,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:44,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:44,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 10:23:44,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:44,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 10:23:44,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:44,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 10:23:44,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:44,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:44,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:44,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:44,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:44,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:23:44,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:44,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:44,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:23:44,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:44,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 10:23:44,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:44,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 10:23:44,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:44,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:44,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:44,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:44,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:44,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:23:44,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:44,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:44,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:23:44,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:44,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 10:23:44,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:44,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 10:23:44,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:44,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:44,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:44,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:44,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:44,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:23:44,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:44,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:44,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:23:44,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:44,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 10:23:44,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:44,607 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-14 10:23:44,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [665386642] [2020-10-14 10:23:44,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:23:44,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-14 10:23:44,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4629908] [2020-10-14 10:23:44,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 10:23:44,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:23:44,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 10:23:44,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-14 10:23:44,615 INFO L87 Difference]: Start difference. First operand 113 states and 139 transitions. Second operand 12 states. [2020-10-14 10:23:45,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:23:45,361 INFO L93 Difference]: Finished difference Result 140 states and 172 transitions. [2020-10-14 10:23:45,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 10:23:45,362 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 70 [2020-10-14 10:23:45,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:23:45,365 INFO L225 Difference]: With dead ends: 140 [2020-10-14 10:23:45,365 INFO L226 Difference]: Without dead ends: 138 [2020-10-14 10:23:45,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2020-10-14 10:23:45,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-14 10:23:45,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 133. [2020-10-14 10:23:45,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-14 10:23:45,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 165 transitions. [2020-10-14 10:23:45,384 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 165 transitions. Word has length 70 [2020-10-14 10:23:45,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:23:45,386 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 165 transitions. [2020-10-14 10:23:45,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 10:23:45,387 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 165 transitions. [2020-10-14 10:23:45,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 10:23:45,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:23:45,388 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:23:45,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 10:23:45,389 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:23:45,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:23:45,389 INFO L82 PathProgramCache]: Analyzing trace with hash 547694879, now seen corresponding path program 3 times [2020-10-14 10:23:45,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:23:45,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681643792] [2020-10-14 10:23:45,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:23:45,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:45,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:45,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:45,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:45,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:46,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:46,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:46,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:46,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:47,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:47,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:47,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:47,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:47,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:49,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:50,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:50,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:50,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:50,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 10:23:50,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 10:23:50,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 10:23:50,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:50,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:50,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 10:23:50,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 10:23:50,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 10:23:50,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:50,626 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 16 [2020-10-14 10:23:50,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:23:50,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:50,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:50,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:50,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:23:50,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:50,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:50,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:50,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:50,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:50,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:50,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:50,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:50,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:23:50,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:50,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:50,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:50,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:50,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:50,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 10:23:50,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:50,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:50,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:23:50,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:50,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:23:50,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:50,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 10:23:50,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:50,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:50,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:50,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:23:50,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:50,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:23:50,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:50,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:50,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:23:50,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:50,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 10:23:50,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:50,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 10:23:50,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:50,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:50,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:50,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 10:23:50,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:50,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 10:23:50,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:50,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:50,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 10:23:50,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 10:23:50,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 10:23:50,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:50,936 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 19 [2020-10-14 10:23:50,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 10:23:50,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:50,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:50,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:50,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:50,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:50,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:23:50,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:50,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:50,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:23:50,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:50,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 10:23:50,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:23:50,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:23:50,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:50,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:50,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:50,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:50,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:50,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:23:50,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:50,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:50,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:23:50,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:50,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 10:23:50,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:50,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 10:23:50,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:50,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:50,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:50,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:23:50,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:23:50,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:23:50,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:50,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:50,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:23:50,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:23:50,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 10:23:50,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:50,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 10:23:50,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:23:50,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:51,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:51,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:51,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:51,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:51,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:52,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:52,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:52,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:52,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:52,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:23:53,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:23:53,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 10:23:53,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 10:23:53,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2161 [2020-10-14 10:23:53,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:23:53,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:23:53,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 10:23:53,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 10:23:53,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 10:23:53,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:23:54,542 WARN L193 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 67 [2020-10-14 10:23:54,921 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 61 [2020-10-14 10:23:55,134 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-10-14 10:23:55,474 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 25 [2020-10-14 10:23:55,677 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 25 [2020-10-14 10:23:55,873 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 2 proven. 28 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 10:23:55,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681643792] [2020-10-14 10:23:55,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 10:23:55,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 10:23:55,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809378637] [2020-10-14 10:23:55,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 10:23:55,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:23:55,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 10:23:55,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2020-10-14 10:23:55,875 INFO L87 Difference]: Start difference. First operand 133 states and 165 transitions. Second operand 24 states. [2020-10-14 10:23:57,444 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99 [2020-10-14 10:23:57,850 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 72 [2020-10-14 10:23:58,413 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 98 [2020-10-14 10:23:58,815 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 58 [2020-10-14 10:23:59,142 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-14 10:23:59,418 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2020-10-14 10:24:00,045 WARN L193 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 98 [2020-10-14 10:24:00,613 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 68 [2020-10-14 10:24:01,245 WARN L193 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 88 [2020-10-14 10:24:01,680 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-14 10:24:02,371 WARN L193 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 101 [2020-10-14 10:24:03,012 WARN L193 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 100 [2020-10-14 10:24:04,082 WARN L193 SmtUtils]: Spent 861.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 118 [2020-10-14 10:24:05,288 WARN L193 SmtUtils]: Spent 932.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 116 [2020-10-14 10:24:06,434 WARN L193 SmtUtils]: Spent 827.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 107 [2020-10-14 10:24:07,347 WARN L193 SmtUtils]: Spent 705.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 108 [2020-10-14 10:24:08,122 WARN L193 SmtUtils]: Spent 578.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 98 [2020-10-14 10:24:09,153 WARN L193 SmtUtils]: Spent 828.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 109 [2020-10-14 10:24:09,731 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 87 [2020-10-14 10:24:10,407 WARN L193 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 91 [2020-10-14 10:24:11,091 WARN L193 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 92 [2020-10-14 10:24:12,151 WARN L193 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 92 [2020-10-14 10:24:13,424 WARN L193 SmtUtils]: Spent 760.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 112 [2020-10-14 10:24:13,697 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 52 [2020-10-14 10:24:14,676 WARN L193 SmtUtils]: Spent 749.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 110 [2020-10-14 10:24:15,800 WARN L193 SmtUtils]: Spent 743.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 99 [2020-10-14 10:24:16,712 WARN L193 SmtUtils]: Spent 665.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 100 [2020-10-14 10:24:17,436 WARN L193 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 101 [2020-10-14 10:24:18,432 WARN L193 SmtUtils]: Spent 757.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 101 [2020-10-14 10:24:18,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:24:18,662 INFO L93 Difference]: Finished difference Result 197 states and 238 transitions. [2020-10-14 10:24:18,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-14 10:24:18,663 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 67 [2020-10-14 10:24:18,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:24:18,664 INFO L225 Difference]: With dead ends: 197 [2020-10-14 10:24:18,664 INFO L226 Difference]: Without dead ends: 107 [2020-10-14 10:24:18,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 893 ImplicationChecksByTransitivity, 23.3s TimeCoverageRelationStatistics Valid=920, Invalid=3370, Unknown=0, NotChecked=0, Total=4290 [2020-10-14 10:24:18,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-14 10:24:18,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 89. [2020-10-14 10:24:18,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-14 10:24:18,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 100 transitions. [2020-10-14 10:24:18,688 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 100 transitions. Word has length 67 [2020-10-14 10:24:18,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:24:18,688 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 100 transitions. [2020-10-14 10:24:18,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 10:24:18,689 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 100 transitions. [2020-10-14 10:24:18,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-14 10:24:18,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:24:18,690 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:24:18,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 10:24:18,691 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:24:18,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:24:18,692 INFO L82 PathProgramCache]: Analyzing trace with hash -2131666446, now seen corresponding path program 1 times [2020-10-14 10:24:18,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:24:18,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066651142] [2020-10-14 10:24:18,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:24:18,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:18,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:18,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:18,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 10:24:18,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:18,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-14 10:24:18,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:18,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:18,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 10:24:18,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-14 10:24:18,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 10:24:18,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:19,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:24:19,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:19,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:19,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:19,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:24:19,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:19,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:24:19,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:19,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:19,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:19,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:19,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:19,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:19,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:24:19,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:19,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:19,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:19,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:19,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:19,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:24:19,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:19,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:19,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:19,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:19,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:19,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:19,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 10:24:19,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:19,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:19,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:19,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:24:19,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:19,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:24:19,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:19,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:19,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:19,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:19,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:19,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:19,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 10:24:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:19,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:19,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:19,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 10:24:19,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:19,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:24:19,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:19,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:19,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:19,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:19,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:19,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:19,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 10:24:19,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:19,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:19,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:19,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:19,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:19,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 10:24:19,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:19,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:19,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:19,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:19,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:19,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:19,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:24:19,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:19,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:19,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:19,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:19,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:19,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:24:19,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:19,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:19,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:19,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:19,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:19,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:19,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 10:24:19,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:19,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:19,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:19,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:19,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:19,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 10:24:19,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:19,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:19,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:19,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:19,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:19,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:19,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 10:24:19,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:19,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:19,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:19,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 10:24:19,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:19,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 10:24:19,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:19,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:19,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 10:24:19,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:19,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 10:24:19,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:19,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 10:24:19,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:19,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:19,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:19,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:19,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:19,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:24:19,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:19,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:19,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:24:19,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:19,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 10:24:19,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:19,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 10:24:19,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:19,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:19,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:19,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:19,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:19,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:24:19,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:19,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:19,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:24:19,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:19,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 10:24:19,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:19,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 10:24:19,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:19,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:19,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:19,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:19,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:19,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:24:19,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:19,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:19,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:24:19,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:19,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 10:24:19,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:19,382 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-14 10:24:19,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066651142] [2020-10-14 10:24:19,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 10:24:19,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 10:24:19,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992643212] [2020-10-14 10:24:19,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 10:24:19,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:24:19,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 10:24:19,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-14 10:24:19,386 INFO L87 Difference]: Start difference. First operand 89 states and 100 transitions. Second operand 13 states. [2020-10-14 10:24:19,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:24:19,998 INFO L93 Difference]: Finished difference Result 95 states and 105 transitions. [2020-10-14 10:24:19,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 10:24:19,999 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 73 [2020-10-14 10:24:19,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:24:20,001 INFO L225 Difference]: With dead ends: 95 [2020-10-14 10:24:20,001 INFO L226 Difference]: Without dead ends: 91 [2020-10-14 10:24:20,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2020-10-14 10:24:20,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-14 10:24:20,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 72. [2020-10-14 10:24:20,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-14 10:24:20,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 77 transitions. [2020-10-14 10:24:20,010 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 77 transitions. Word has length 73 [2020-10-14 10:24:20,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:24:20,011 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 77 transitions. [2020-10-14 10:24:20,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 10:24:20,011 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 77 transitions. [2020-10-14 10:24:20,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-14 10:24:20,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:24:20,012 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:24:20,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 10:24:20,012 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:24:20,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:24:20,013 INFO L82 PathProgramCache]: Analyzing trace with hash -752148454, now seen corresponding path program 1 times [2020-10-14 10:24:20,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:24:20,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [987207592] [2020-10-14 10:24:20,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:24:20,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:20,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:20,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:20,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 10:24:20,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:20,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-10-14 10:24:20,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:20,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:20,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 10:24:20,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 10:24:20,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 10:24:20,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:20,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:24:20,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:20,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:20,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:20,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:24:20,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:20,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:24:20,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:20,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:20,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:20,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:20,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:20,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:20,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:24:20,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:20,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:20,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:20,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:20,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:20,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:24:20,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:20,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:20,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:20,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:20,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:20,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:20,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 10:24:20,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:20,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:20,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:20,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:24:20,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:20,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:24:20,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:20,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:20,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:24:20,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:20,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 10:24:20,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:20,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 10:24:20,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:20,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:20,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:20,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 10:24:20,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:20,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 10:24:20,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:20,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:20,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:24:20,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:20,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 10:24:20,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:20,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 10:24:20,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:20,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:20,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:20,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:20,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:20,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:24:20,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:20,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:20,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:20,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:20,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:20,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:20,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:24:20,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:20,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:20,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:20,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:20,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:20,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:24:20,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:20,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:20,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:20,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:20,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:20,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:20,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 10:24:20,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:20,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:20,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:20,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:20,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:20,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:24:20,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:20,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:20,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:20,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:20,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:20,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:20,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 10:24:20,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:20,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:20,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:20,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 10:24:20,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:20,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 10:24:20,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:20,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:20,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 10:24:20,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:20,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 10:24:20,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:20,812 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 31 [2020-10-14 10:24:20,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 10:24:20,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:20,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:20,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:20,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:20,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:20,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:24:20,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:20,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:20,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:24:20,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:20,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 10:24:20,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:20,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 10:24:20,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:20,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:20,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:20,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:20,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:20,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:24:20,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:20,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:20,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:24:20,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:20,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 10:24:20,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:20,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 10:24:20,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:20,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:20,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:20,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:20,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:20,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:24:20,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:20,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:20,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:24:20,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:20,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 10:24:21,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:21,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 10:24:21,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:21,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:21,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:21,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:21,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:21,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:24:21,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:21,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:21,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:24:21,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:21,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 10:24:21,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 10:24:21,027 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-10-14 10:24:21,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [987207592] [2020-10-14 10:24:21,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:24:21,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-14 10:24:21,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080146131] [2020-10-14 10:24:21,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 10:24:21,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:24:21,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 10:24:21,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-14 10:24:21,036 INFO L87 Difference]: Start difference. First operand 72 states and 77 transitions. Second operand 14 states. [2020-10-14 10:24:21,895 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2020-10-14 10:24:22,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:24:22,542 INFO L93 Difference]: Finished difference Result 90 states and 98 transitions. [2020-10-14 10:24:22,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 10:24:22,543 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 76 [2020-10-14 10:24:22,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:24:22,544 INFO L225 Difference]: With dead ends: 90 [2020-10-14 10:24:22,544 INFO L226 Difference]: Without dead ends: 72 [2020-10-14 10:24:22,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=101, Invalid=549, Unknown=0, NotChecked=0, Total=650 [2020-10-14 10:24:22,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-14 10:24:22,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-10-14 10:24:22,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-14 10:24:22,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2020-10-14 10:24:22,554 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 76 [2020-10-14 10:24:22,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:24:22,555 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2020-10-14 10:24:22,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 10:24:22,555 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2020-10-14 10:24:22,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-14 10:24:22,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:24:22,556 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:24:22,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 10:24:22,556 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:24:22,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:24:22,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1998312912, now seen corresponding path program 1 times [2020-10-14 10:24:22,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:24:22,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913013299] [2020-10-14 10:24:22,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:24:22,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:22,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:22,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:22,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:24,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:26,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:26,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:26,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:27,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:27,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:27,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:27,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:27,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 10:24:27,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 10:24:27,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 10:24:27,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:27,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:27,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 10:24:27,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-14 10:24:27,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 10:24:27,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:27,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:24:27,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:27,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:27,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:27,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:24:27,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:27,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:24:27,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:27,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:27,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:27,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:27,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:27,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:27,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:24:27,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:27,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:27,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:27,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:27,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:27,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 10:24:27,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:27,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:27,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:27,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:27,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:27,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:27,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 10:24:27,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:27,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:27,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:27,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:24:27,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:27,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:24:27,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:27,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:27,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:27,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:27,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:27,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:27,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 10:24:27,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:27,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:27,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:27,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 10:24:27,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:27,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:24:27,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:27,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:27,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:27,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:27,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:27,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:27,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 10:24:27,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:27,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:27,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:27,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:27,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:27,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:24:27,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:27,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:27,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:27,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:27,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:27,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:27,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:24:27,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:27,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:27,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:27,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:27,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:27,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:24:27,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:27,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:27,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:27,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:27,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:27,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:27,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 10:24:27,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:27,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:27,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:27,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:27,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:27,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 10:24:27,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:27,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:27,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:27,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:27,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:27,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:27,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 10:24:27,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:27,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:27,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:27,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 10:24:27,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:27,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 10:24:27,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:27,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:27,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 10:24:27,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 10:24:27,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 10:24:27,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:27,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 10:24:27,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:27,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:27,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:27,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:27,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:27,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:24:27,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:27,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:27,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:27,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 10:24:27,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:27,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:27,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 10:24:27,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:27,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:27,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:27,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:27,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:27,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:24:27,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:27,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:27,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:27,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 10:24:27,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:27,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:27,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 10:24:27,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:27,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:27,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:27,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:27,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:27,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:24:27,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:27,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:27,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:27,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 10:24:27,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:27,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:24:27,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 10:24:27,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:27,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:27,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:27,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:27,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:27,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:24:27,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:27,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:27,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:27,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 10:24:27,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:27,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:27,745 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-10-14 10:24:27,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913013299] [2020-10-14 10:24:27,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 10:24:27,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 10:24:27,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158302254] [2020-10-14 10:24:27,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 10:24:27,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:24:27,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 10:24:27,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-14 10:24:27,747 INFO L87 Difference]: Start difference. First operand 72 states and 76 transitions. Second operand 9 states. [2020-10-14 10:24:28,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:24:28,190 INFO L93 Difference]: Finished difference Result 127 states and 134 transitions. [2020-10-14 10:24:28,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 10:24:28,191 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-10-14 10:24:28,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:24:28,192 INFO L225 Difference]: With dead ends: 127 [2020-10-14 10:24:28,193 INFO L226 Difference]: Without dead ends: 87 [2020-10-14 10:24:28,194 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-14 10:24:28,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-14 10:24:28,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 75. [2020-10-14 10:24:28,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-14 10:24:28,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-10-14 10:24:28,203 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 82 [2020-10-14 10:24:28,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:24:28,204 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-10-14 10:24:28,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 10:24:28,204 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-10-14 10:24:28,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-14 10:24:28,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:24:28,205 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 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] [2020-10-14 10:24:28,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 10:24:28,205 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:24:28,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:24:28,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1757746532, now seen corresponding path program 2 times [2020-10-14 10:24:28,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:24:28,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000242490] [2020-10-14 10:24:28,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:24:28,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:28,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:28,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:28,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:31,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:31,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-14 10:24:31,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:24:31,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2798 [2020-10-14 10:24:31,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:31,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:31,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 10:24:31,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 10:24:31,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 10:24:31,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:31,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:24:31,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:31,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:31,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:31,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:24:31,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:31,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:24:31,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:31,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:31,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:31,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:31,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:31,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:31,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:24:31,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:31,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:31,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:31,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:31,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:31,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 10:24:31,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:31,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:31,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:31,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:31,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:31,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:31,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 10:24:31,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:31,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:31,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:31,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:24:31,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:31,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:24:31,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:31,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:31,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:24:31,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:31,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 10:24:31,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:31,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 10:24:31,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:31,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:31,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:31,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 10:24:31,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:31,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 10:24:31,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:31,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:31,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:24:31,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:31,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 10:24:31,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:31,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 10:24:31,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:31,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:31,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:31,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:31,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:31,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 10:24:31,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:31,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:31,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:31,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:31,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:31,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:31,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 10:24:31,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:31,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:31,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:31,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:31,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:31,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 10:24:31,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:31,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:31,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:31,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:31,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:31,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:31,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 10:24:31,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:31,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:31,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:31,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:31,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:31,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 10:24:31,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:31,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:31,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:24:31,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:31,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:24:31,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:31,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 10:24:31,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:31,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:31,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:31,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 10:24:31,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:31,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 10:24:31,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:31,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:31,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 10:24:31,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:31,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 10:24:31,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:31,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 10:24:31,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:31,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:31,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:31,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:31,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:31,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:24:31,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:31,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:31,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:24:31,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:31,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 10:24:31,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:31,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 10:24:31,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:31,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:31,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:31,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:31,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:31,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:24:31,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:31,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:31,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:24:31,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:31,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 10:24:31,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:31,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-14 10:24:31,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:31,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:31,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:31,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:31,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:31,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:24:31,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:31,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:31,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:24:31,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:31,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 10:24:31,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:31,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 10:24:31,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:24:31,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:24:31,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:24:31,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 10:24:31,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:24:31,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:24:31,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:24:31,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:24:31,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:24:31,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:24:31,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 10:24:31,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:24:31,487 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-14 10:24:31,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000242490] [2020-10-14 10:24:31,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 10:24:31,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 10:24:31,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065901426] [2020-10-14 10:24:31,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 10:24:31,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:24:31,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 10:24:31,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-14 10:24:31,488 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 14 states. [2020-10-14 10:24:32,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:24:32,385 INFO L93 Difference]: Finished difference Result 75 states and 79 transitions. [2020-10-14 10:24:32,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 10:24:32,385 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 85 [2020-10-14 10:24:32,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:24:32,386 INFO L225 Difference]: With dead ends: 75 [2020-10-14 10:24:32,386 INFO L226 Difference]: Without dead ends: 0 [2020-10-14 10:24:32,387 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=101, Invalid=549, Unknown=0, NotChecked=0, Total=650 [2020-10-14 10:24:32,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-14 10:24:32,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-14 10:24:32,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-14 10:24:32,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-14 10:24:32,388 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 85 [2020-10-14 10:24:32,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:24:32,388 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-14 10:24:32,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 10:24:32,388 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-14 10:24:32,389 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-14 10:24:32,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 10:24:32,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-14 10:24:33,347 WARN L193 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 257 DAG size of output: 241 [2020-10-14 10:24:33,538 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 181 [2020-10-14 10:24:33,696 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-10-14 10:24:33,899 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 49 [2020-10-14 10:24:34,114 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2020-10-14 10:24:34,328 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 49 [2020-10-14 10:24:34,614 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 49 [2020-10-14 10:24:34,932 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 47 [2020-10-14 10:24:39,370 WARN L193 SmtUtils]: Spent 4.33 s on a formula simplification. DAG size of input: 231 DAG size of output: 156 [2020-10-14 10:24:39,499 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 37 [2020-10-14 10:24:42,598 WARN L193 SmtUtils]: Spent 3.09 s on a formula simplification. DAG size of input: 176 DAG size of output: 144 [2020-10-14 10:24:42,603 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-14 10:24:42,603 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#NULL.base)| |#NULL.base|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-14 10:24:42,604 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-14 10:24:42,604 INFO L268 CegarLoopResult]: For program point L35-2(lines 35 41) no Hoare annotation was computed. [2020-10-14 10:24:42,605 INFO L264 CegarLoopResult]: At program point L35-3(lines 35 41) the Hoare annotation is: (let ((.cse44 (select |#memory_int| finddup_~a.base)) (.cse37 ((as const (Array Int Int)) 0))) (let ((.cse40 (@diff .cse44 .cse37))) (let ((.cse38 (store .cse44 .cse40 0)) (.cse22 (select |old(#memory_int)| |finddup_#in~a.base|))) (let ((.cse45 (* finddup_~i~1 4)) (.cse43 (@diff .cse22 .cse37)) (.cse23 (* finddup_~n 4)) (.cse39 (@diff .cse38 .cse37))) (let ((.cse15 (= |finddup_#in~a.base| finddup_~a.base)) (.cse12 (= |#memory_int| |old(#memory_int)|)) (.cse33 (select .cse44 .cse39)) (.cse25 (select .cse44 .cse40)) (.cse36 (select .cse44 (+ .cse23 finddup_~a.offset (- 4)))) (.cse20 (+ finddup_~i~1 1)) (.cse41 (store .cse22 .cse43 0)) (.cse26 (select .cse44 (+ finddup_~a.offset .cse45)))) (let ((.cse19 (<= 1 finddup_~i~1)) (.cse11 (or (not (= (select .cse44 (+ (* finddup_~j~1 4) finddup_~a.offset (- 4))) .cse26)) (< finddup_~j~1 finddup_~n))) (.cse13 (not (= .cse26 (select .cse44 (+ finddup_~a.offset .cse45 4))))) (.cse14 (<= finddup_~j~1 finddup_~n)) (.cse3 (= |finddup_#in~_i.base| finddup_~_i.base)) (.cse4 (= |finddup_#in~_j.base| finddup_~_j.base)) (.cse1 (let ((.cse42 (@diff .cse41 .cse37))) (or (not (= .cse37 (store .cse41 .cse42 0))) (not (= (select .cse22 .cse43) (select .cse22 .cse42)))))) (.cse5 (not (= .cse41 .cse37))) (.cse8 (= finddup_~j~1 .cse20)) (.cse9 (<= 2 finddup_~j~1)) (.cse10 (= |finddup_#in~n| finddup_~n)) (.cse6 (= finddup_~_j.offset |finddup_#in~_j.offset|)) (.cse7 (= |finddup_#in~_i.offset| finddup_~_i.offset)) (.cse27 (= (mod (+ finddup_~a.offset (* .cse40 3)) 4) 0)) (.cse28 (not (= .cse25 .cse36))) (.cse29 (<= 1 (+ (div (+ finddup_~a.offset (* .cse40 (- 1))) 4) finddup_~i~1))) (.cse30 (not (= .cse33 .cse36))) (.cse31 (= (mod (+ finddup_~a.offset (* .cse39 3)) 4) 0)) (.cse32 (<= 1 (+ (div (+ finddup_~a.offset (* .cse39 (- 1))) 4) finddup_~i~1))) (.cse34 (not (= .cse37 (store .cse38 .cse39 0)))) (.cse35 (and .cse15 .cse12 (not (= .cse26 0)) (not (= .cse36 0))))) (let ((.cse2 (or (and .cse15 (or (and .cse27 .cse28 .cse29) (and .cse30 .cse31 .cse32) .cse34) .cse12) .cse35)) (.cse18 (let ((.cse21 (or (and .cse15 (or (and (not (= .cse25 .cse26)) .cse27 .cse28 .cse29) (and .cse30 .cse31 .cse32 (not (= .cse26 .cse33))) .cse34) .cse12) .cse35))) (or (and .cse19 .cse11 .cse21 .cse3 .cse4 .cse13 .cse6 .cse14 .cse7 (<= .cse20 finddup_~j~1) .cse10) (and .cse3 .cse4 (let ((.cse24 (<= (+ (* 4 finddup_~i~1) 4) (* 4 finddup_~n)))) (or (and .cse21 (not (= (select .cse22 (+ .cse23 |finddup_#in~a.offset| (- 4))) (select .cse22 |finddup_#in~a.offset|))) .cse24 (<= finddup_~i~1 1) .cse8 .cse9 .cse10) (and .cse21 .cse24 (or (<= (+ finddup_~i~1 2) finddup_~n) (and .cse1 .cse5)) .cse8 .cse9 .cse10))) .cse6 .cse7)))) (.cse0 (<= .cse20 finddup_~n)) (.cse16 (= finddup_~a.offset |finddup_#in~a.offset|)) (.cse17 (= finddup_~i~1 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10) (and .cse11 .cse12 .cse4 .cse13 .cse6 .cse14 .cse7 .cse9 .cse10 .cse15 .cse3 .cse16 .cse17) (and .cse18 (<= finddup_~n finddup_~j~1)) (and (<= 3 finddup_~j~1) .cse0 .cse19 .cse11 .cse1 .cse4 .cse13 .cse6 .cse14 .cse7 .cse10 .cse2 .cse3 .cse5) (and .cse18 .cse16) (and .cse15 .cse0 .cse12 .cse3 .cse4 .cse6 .cse7 .cse16 .cse8 .cse17 .cse10))))))))) [2020-10-14 10:24:42,605 INFO L264 CegarLoopResult]: At program point finddupENTRY(lines 31 44) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-10-14 10:24:42,605 INFO L268 CegarLoopResult]: For program point finddupEXIT(lines 31 44) no Hoare annotation was computed. [2020-10-14 10:24:42,605 INFO L268 CegarLoopResult]: For program point L36(lines 36 40) no Hoare annotation was computed. [2020-10-14 10:24:42,605 INFO L268 CegarLoopResult]: For program point L34-2(lines 34 42) no Hoare annotation was computed. [2020-10-14 10:24:42,605 INFO L264 CegarLoopResult]: At program point L34-3(lines 34 42) the Hoare annotation is: (let ((.cse45 (select |#memory_int| finddup_~a.base)) (.cse35 ((as const (Array Int Int)) 0))) (let ((.cse39 (@diff .cse45 .cse35))) (let ((.cse36 (store .cse45 .cse39 0)) (.cse40 (select |old(#memory_int)| |finddup_#in~a.base|))) (let ((.cse44 (@diff .cse40 .cse35)) (.cse41 (* finddup_~n 4)) (.cse37 (@diff .cse36 .cse35))) (let ((.cse34 (select .cse45 .cse37)) (.cse32 (select .cse45 .cse39)) (.cse2 (= |finddup_#in~a.base| finddup_~a.base)) (.cse10 (= |#memory_int| |old(#memory_int)|)) (.cse33 (select .cse45 (+ finddup_~a.offset (* finddup_~i~1 4)))) (.cse38 (select .cse45 (+ .cse41 finddup_~a.offset (- 4)))) (.cse42 (store .cse40 .cse44 0))) (let ((.cse0 (<= 1 finddup_~i~1)) (.cse1 (let ((.cse43 (@diff .cse42 .cse35))) (or (not (= .cse35 (store .cse42 .cse43 0))) (not (= (select .cse40 .cse44) (select .cse40 .cse43)))))) (.cse14 (not (= .cse42 .cse35))) (.cse18 (<= finddup_~j~1 (+ finddup_~i~1 1))) (.cse26 (<= finddup_~i~1 1)) (.cse27 (<= 2 finddup_~j~1)) (.cse17 (= |finddup_#in~n| finddup_~n)) (.cse22 (* 4 finddup_~n)) (.cse24 (not (= (select .cse40 (+ .cse41 |finddup_#in~a.offset| (- 4))) (select .cse40 |finddup_#in~a.offset|)))) (.cse11 (and .cse2 .cse10 (not (= .cse33 0)) (not (= .cse38 0)))) (.cse3 (= (mod (+ finddup_~a.offset (* .cse39 3)) 4) 0)) (.cse4 (not (= .cse32 .cse38))) (.cse5 (<= 1 (+ (div (+ finddup_~a.offset (* .cse39 (- 1))) 4) finddup_~i~1))) (.cse6 (not (= .cse34 .cse38))) (.cse7 (= (mod (+ finddup_~a.offset (* .cse37 3)) 4) 0)) (.cse8 (<= 1 (+ (div (+ finddup_~a.offset (* .cse37 (- 1))) 4) finddup_~i~1))) (.cse9 (not (= .cse35 (store .cse36 .cse37 0)))) (.cse21 (* 4 finddup_~i~1))) (let ((.cse25 (= finddup_~a.offset |finddup_#in~a.offset|)) (.cse19 (<= finddup_~n finddup_~j~1)) (.cse20 (let ((.cse31 (+ .cse21 4))) (let ((.cse28 (or .cse11 (and .cse2 (or (and (not (= .cse32 .cse33)) .cse3 .cse4 .cse5) (and .cse6 .cse7 .cse8 (not (= .cse33 .cse34))) .cse9)))) (.cse29 (or (< .cse31 .cse22) .cse24)) (.cse30 (<= .cse31 .cse22))) (or (and .cse28 .cse0 .cse29 .cse30 .cse26 (or (<= (+ finddup_~i~1 2) finddup_~n) (and .cse1 .cse14)) .cse17) (and .cse28 .cse18 .cse29 .cse30 .cse26 .cse27 .cse17))))) (.cse23 (<= finddup_~n finddup_~i~1)) (.cse12 (= |finddup_#in~_i.base| finddup_~_i.base)) (.cse13 (= |finddup_#in~_j.base| finddup_~_j.base)) (.cse15 (= finddup_~_j.offset |finddup_#in~_j.offset|)) (.cse16 (= |finddup_#in~_i.offset| finddup_~_i.offset))) (or (and (<= 3 finddup_~j~1) .cse0 .cse1 (or (and .cse2 (or (and .cse3 .cse4 .cse5) (and .cse6 .cse7 .cse8) .cse9) .cse10) .cse11) .cse12 .cse13 .cse14 .cse15 .cse16 .cse17) (and .cse18 .cse10 .cse12 .cse13 .cse15 .cse16 .cse19 .cse20) (and (<= .cse21 .cse22) .cse23 .cse18 .cse10 .cse24 .cse12 (<= finddup_~i~1 2) .cse16 .cse17) (and .cse2 .cse10 .cse12 .cse13 .cse15 .cse16 .cse25 (= finddup_~i~1 0) .cse17) (and .cse10 .cse12 .cse13 .cse15 .cse25 .cse16 .cse19 .cse20) (and .cse23 .cse18 .cse10 .cse26 .cse17) (and .cse2 .cse23 .cse1 .cse10 .cse18 .cse12 .cse14 .cse13 .cse15 .cse16 .cse27 .cse17))))))))) [2020-10-14 10:24:42,605 INFO L268 CegarLoopResult]: For program point L34-4(lines 34 42) no Hoare annotation was computed. [2020-10-14 10:24:42,606 INFO L268 CegarLoopResult]: For program point finddupFINAL(lines 31 44) no Hoare annotation was computed. [2020-10-14 10:24:42,606 INFO L264 CegarLoopResult]: At program point mkdupENTRY(lines 17 29) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-10-14 10:24:42,606 INFO L268 CegarLoopResult]: For program point mkdupFINAL(lines 17 29) no Hoare annotation was computed. [2020-10-14 10:24:42,606 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-10-14 10:24:42,606 INFO L264 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: (let ((.cse0 (* mkdup_~i~0 4))) (let ((.cse2 (= .cse0 0)) (.cse1 (= mkdup_~a.base |mkdup_#in~a.base|))) (and (= |mkdup_#in~n| mkdup_~n) (or (= (* mkdup_~j~0 4) 0) (< 0 mkdup_~j~0)) (= |#memory_int| |old(#memory_int)|) (<= (+ mkdup_~j~0 1) |mkdup_#in~n|) (or (and (= |mkdup_#in~a.offset| (+ .cse0 mkdup_~a.offset)) .cse1) (not .cse2)) (or .cse2 (and (= |mkdup_#in~a.offset| mkdup_~a.offset) (<= (+ mkdup_~i~0 1) |mkdup_#in~n|) .cse1 (< 0 mkdup_~i~0)))))) [2020-10-14 10:24:42,606 INFO L264 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: (and (= |mkdup_#in~a.offset| mkdup_~a.offset) (= |mkdup_#in~n| mkdup_~n) (= |#memory_int| |old(#memory_int)|) (= mkdup_~a.base |mkdup_#in~a.base|)) [2020-10-14 10:24:42,606 INFO L264 CegarLoopResult]: At program point L21-1(line 21) the Hoare annotation is: (let ((.cse0 (* mkdup_~i~0 4))) (let ((.cse2 (= .cse0 0)) (.cse1 (= mkdup_~a.base |mkdup_#in~a.base|))) (and (= |mkdup_#in~n| mkdup_~n) (= |#memory_int| |old(#memory_int)|) (or (and (= |mkdup_#in~a.offset| (+ .cse0 mkdup_~a.offset)) .cse1) (not .cse2)) (<= 1 |mkdup_#in~n|) (or .cse2 (and (= |mkdup_#in~a.offset| mkdup_~a.offset) (<= (+ mkdup_~i~0 1) |mkdup_#in~n|) .cse1 (< 0 mkdup_~i~0)))))) [2020-10-14 10:24:42,606 INFO L268 CegarLoopResult]: For program point mkdupEXIT(lines 17 29) no Hoare annotation was computed. [2020-10-14 10:24:42,606 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-14 10:24:42,607 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-14 10:24:42,607 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-14 10:24:42,607 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-14 10:24:42,607 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-10-14 10:24:42,607 INFO L271 CegarLoopResult]: At program point assume_abort_if_notENTRY(lines 13 15) the Hoare annotation is: true [2020-10-14 10:24:42,607 INFO L268 CegarLoopResult]: For program point L14-2(lines 13 15) no Hoare annotation was computed. [2020-10-14 10:24:42,607 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 13 15) no Hoare annotation was computed. [2020-10-14 10:24:42,608 INFO L264 CegarLoopResult]: At program point L60(line 60) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| |main_~#i~2.base|) |main_~#i~2.offset|)) (.cse1 (select (select |#memory_int| |main_~#j~2.base|) |main_~#j~2.offset|))) (and (not (= |main_~#i~2.base| main_~a~0.base)) (<= (+ |main_#t~malloc9.base| 1) |#StackHeapBarrier|) (= main_~a~0.offset 0) (not (= |main_#t~mem18| |main_#t~mem17|)) (= |main_~#j~2.offset| 0) (<= 2 main_~n~0) (not (= .cse0 .cse1)) (<= (+ main_~a~0.base 1) |#StackHeapBarrier|) (not (= |main_~#i~2.base| |main_~#j~2.base|)) (not (= main_~a~0.base |main_~#j~2.base|)) (let ((.cse2 (select |#memory_int| main_~a~0.base))) (= (select .cse2 (+ (* .cse0 4) main_~a~0.offset)) (select .cse2 (+ (* .cse1 4) main_~a~0.offset)))) (= |main_#t~malloc9.offset| 0))) [2020-10-14 10:24:42,608 INFO L268 CegarLoopResult]: For program point L60-1(line 60) no Hoare annotation was computed. [2020-10-14 10:24:42,608 INFO L268 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2020-10-14 10:24:42,608 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 46 64) no Hoare annotation was computed. [2020-10-14 10:24:42,608 INFO L264 CegarLoopResult]: At program point L58-2(line 58) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| |main_~#i~2.base|) |main_~#i~2.offset|)) (.cse1 (select (select |#memory_int| |main_~#j~2.base|) |main_~#j~2.offset|))) (and (not (= |main_~#i~2.base| main_~a~0.base)) (= main_~a~0.offset 0) (not (= .cse0 .cse1)) (<= 1 .cse1) (<= (+ |main_#t~malloc9.base| 1) |#StackHeapBarrier|) (= |main_~#j~2.offset| 0) (<= (+ .cse0 1) main_~n~0) (<= (+ main_~a~0.base 1) |#StackHeapBarrier|) (not (= main_~a~0.base |main_~#j~2.base|)) (not (= |main_~#i~2.base| |main_~#j~2.base|)) (<= (+ .cse1 1) main_~n~0) (let ((.cse2 (select |#memory_int| main_~a~0.base))) (= (select .cse2 (+ (* .cse0 4) main_~a~0.offset)) (select .cse2 (+ (* .cse1 4) main_~a~0.offset)))) (= |main_#t~malloc9.offset| 0) |main_#t~short13|)) [2020-10-14 10:24:42,608 INFO L268 CegarLoopResult]: For program point L58-3(line 58) no Hoare annotation was computed. [2020-10-14 10:24:42,608 INFO L264 CegarLoopResult]: At program point L52(line 52) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= (select |#memory_int| main_~a~0.base) .cse0) (<= (+ |main_#t~malloc9.base| 1) |#StackHeapBarrier|) (= .cse0 (select |#memory_int| |main_#t~malloc9.base|)) (= main_~a~0.offset 0) (<= (+ main_~a~0.base 1) |#StackHeapBarrier|) (= |main_#t~malloc9.offset| 0))) [2020-10-14 10:24:42,608 INFO L268 CegarLoopResult]: For program point L52-1(line 52) no Hoare annotation was computed. [2020-10-14 10:24:42,609 INFO L264 CegarLoopResult]: At program point L50(line 50) the Hoare annotation is: (and (<= (+ |main_#t~malloc9.base| 1) |#StackHeapBarrier|) (= |#memory_int| |old(#memory_int)|) (= |main_#t~malloc9.offset| 0)) [2020-10-14 10:24:42,609 INFO L268 CegarLoopResult]: For program point L50-1(line 50) no Hoare annotation was computed. [2020-10-14 10:24:42,609 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 46 64) no Hoare annotation was computed. [2020-10-14 10:24:42,609 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 46 64) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2020-10-14 10:24:42,609 INFO L264 CegarLoopResult]: At program point L61(line 61) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| |main_~#i~2.base|) |main_~#i~2.offset|)) (.cse1 (select (select |#memory_int| |main_~#j~2.base|) |main_~#j~2.offset|))) (and (not (= |main_~#i~2.base| main_~a~0.base)) (<= (+ |main_#t~malloc9.base| 1) |#StackHeapBarrier|) (= main_~a~0.offset 0) (= |main_#t~mem22| |main_#t~mem21|) (= |main_~#j~2.offset| 0) (not (= .cse0 .cse1)) (<= 2 main_~n~0) (<= (+ main_~a~0.base 1) |#StackHeapBarrier|) (not (= main_~a~0.base |main_~#j~2.base|)) (not (= |main_~#i~2.base| |main_~#j~2.base|)) (let ((.cse2 (select |#memory_int| main_~a~0.base))) (= (select .cse2 (+ (* .cse0 4) main_~a~0.offset)) (select .cse2 (+ (* .cse1 4) main_~a~0.offset)))) (= |main_#t~malloc9.offset| 0))) [2020-10-14 10:24:42,609 INFO L268 CegarLoopResult]: For program point L61-1(line 61) no Hoare annotation was computed. [2020-10-14 10:24:42,609 INFO L268 CegarLoopResult]: For program point L59(line 59) no Hoare annotation was computed. [2020-10-14 10:24:42,609 INFO L264 CegarLoopResult]: At program point L57(line 57) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| |main_~#i~2.base|) |main_~#i~2.offset|)) (.cse1 (select (select |#memory_int| |main_~#j~2.base|) |main_~#j~2.offset|))) (and (not (= |main_~#i~2.base| main_~a~0.base)) (<= (+ |main_#t~malloc9.base| 1) |#StackHeapBarrier|) (= main_~a~0.offset 0) (= |main_~#j~2.offset| 0) (not (= .cse0 .cse1)) (<= (+ main_~a~0.base 1) |#StackHeapBarrier|) (not (= main_~a~0.base |main_~#j~2.base|)) (not (= |main_~#i~2.base| |main_~#j~2.base|)) (let ((.cse2 (select |#memory_int| main_~a~0.base))) (= (select .cse2 (+ (* .cse0 4) main_~a~0.offset)) (select .cse2 (+ (* .cse1 4) main_~a~0.offset)))) (= |main_#t~malloc9.offset| 0) (let ((.cse3 (<= (+ .cse1 1) main_~n~0)) (.cse4 (<= 1 .cse1)) (.cse5 (<= 1 main_~r~0))) (or (and (<= 1 .cse0) (<= (+ .cse0 1) main_~n~0) .cse3 .cse4 .cse5) (and (= .cse0 0) .cse3 .cse4 .cse5))))) [2020-10-14 10:24:42,610 INFO L264 CegarLoopResult]: At program point L59-2(line 59) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| |main_~#i~2.base|) |main_~#i~2.offset|)) (.cse1 (select (select |#memory_int| |main_~#j~2.base|) |main_~#j~2.offset|))) (and (not (= |main_~#i~2.base| main_~a~0.base)) (= main_~a~0.offset 0) (<= 2 main_~n~0) (not (= .cse0 .cse1)) |main_#t~short16| (<= (+ |main_#t~malloc9.base| 1) |#StackHeapBarrier|) (= |main_~#j~2.offset| 0) (<= (+ main_~a~0.base 1) |#StackHeapBarrier|) (<= (+ .cse1 1) main_~n~0) (not (= |main_~#i~2.base| |main_~#j~2.base|)) (not (= main_~a~0.base |main_~#j~2.base|)) (let ((.cse2 (select |#memory_int| main_~a~0.base))) (= (select .cse2 (+ (* .cse0 4) main_~a~0.offset)) (select .cse2 (+ (* .cse1 4) main_~a~0.offset)))) (= |main_#t~malloc9.offset| 0))) [2020-10-14 10:24:42,610 INFO L268 CegarLoopResult]: For program point L57-1(line 57) no Hoare annotation was computed. [2020-10-14 10:24:42,610 INFO L268 CegarLoopResult]: For program point L59-3(line 59) no Hoare annotation was computed. [2020-10-14 10:24:42,610 INFO L264 CegarLoopResult]: At program point L55(line 55) the Hoare annotation is: (let ((.cse3 (select |#memory_int| main_~a~0.base)) (.cse2 ((as const (Array Int Int)) 0))) (let ((.cse4 (@diff .cse3 .cse2))) (let ((.cse0 (store .cse3 .cse4 0))) (let ((.cse1 (@diff .cse0 .cse2))) (and (= (store .cse0 .cse1 0) .cse2) (not (= |main_~#i~2.base| main_~a~0.base)) (or (= (select .cse3 (+ (* main_~n~0 4) main_~a~0.offset (- 4))) (select .cse3 main_~a~0.offset)) (< 8 (* 4 main_~n~0))) (or (= (select .cse3 .cse4) (select .cse3 .cse1)) (= .cse0 .cse2)) (<= (+ |main_#t~malloc9.base| 1) |#StackHeapBarrier|) (= main_~a~0.offset 0) (= |main_~#j~2.offset| 0) (<= 2 main_~n~0) (<= (+ main_~a~0.base 1) |#StackHeapBarrier|) (not (= main_~a~0.base |main_~#j~2.base|)) (not (= |main_~#i~2.base| |main_~#j~2.base|)) (= |main_#t~malloc9.offset| 0)))))) [2020-10-14 10:24:42,610 INFO L268 CegarLoopResult]: For program point L55-1(line 55) no Hoare annotation was computed. [2020-10-14 10:24:42,610 INFO L264 CegarLoopResult]: At program point L49(line 49) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2020-10-14 10:24:42,610 INFO L268 CegarLoopResult]: For program point L49-1(line 49) no Hoare annotation was computed. [2020-10-14 10:24:42,610 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 7 9) the Hoare annotation is: true [2020-10-14 10:24:42,610 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 7 9) no Hoare annotation was computed. [2020-10-14 10:24:42,610 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-10-14 10:24:42,610 INFO L268 CegarLoopResult]: For program point L8-1(line 8) no Hoare annotation was computed. [2020-10-14 10:24:42,610 INFO L268 CegarLoopResult]: For program point L8-3(lines 7 9) no Hoare annotation was computed. [2020-10-14 10:24:42,611 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-10-14 10:24:42,611 INFO L264 CegarLoopResult]: At program point #Ultimate.meminitENTRY(line -1) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-10-14 10:24:42,611 INFO L268 CegarLoopResult]: For program point #Ultimate.meminitEXIT(line -1) no Hoare annotation was computed. [2020-10-14 10:24:42,611 INFO L268 CegarLoopResult]: For program point #Ultimate.meminitFINAL(line -1) no Hoare annotation was computed. [2020-10-14 10:24:42,618 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalArgumentException: unknown symbol (const Int (Array Int Int)) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:238) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportResult(TraceAbstractionStarter.java:693) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:260) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:217) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-10-14 10:24:42,622 INFO L168 Benchmark]: Toolchain (without parser) took 106996.86 ms. Allocated memory was 147.3 MB in the beginning and 844.1 MB in the end (delta: 696.8 MB). Free memory was 103.4 MB in the beginning and 325.4 MB in the end (delta: -222.0 MB). Peak memory consumption was 721.2 MB. Max. memory is 7.1 GB. [2020-10-14 10:24:42,623 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.4 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-10-14 10:24:42,623 INFO L168 Benchmark]: CACSL2BoogieTranslator took 396.78 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 103.0 MB in the beginning and 181.5 MB in the end (delta: -78.5 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. [2020-10-14 10:24:42,624 INFO L168 Benchmark]: Boogie Preprocessor took 47.23 ms. Allocated memory is still 203.9 MB. Free memory was 181.5 MB in the beginning and 179.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-14 10:24:42,624 INFO L168 Benchmark]: RCFGBuilder took 470.07 ms. Allocated memory is still 203.9 MB. Free memory was 179.6 MB in the beginning and 155.1 MB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. [2020-10-14 10:24:42,624 INFO L168 Benchmark]: TraceAbstraction took 106078.00 ms. Allocated memory was 203.9 MB in the beginning and 844.1 MB in the end (delta: 640.2 MB). Free memory was 155.1 MB in the beginning and 325.4 MB in the end (delta: -170.3 MB). Peak memory consumption was 716.3 MB. Max. memory is 7.1 GB. [2020-10-14 10:24:42,627 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.4 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 396.78 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 103.0 MB in the beginning and 181.5 MB in the end (delta: -78.5 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 47.23 ms. Allocated memory is still 203.9 MB. Free memory was 181.5 MB in the beginning and 179.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 470.07 ms. Allocated memory is still 203.9 MB. Free memory was 179.6 MB in the beginning and 155.1 MB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 106078.00 ms. Allocated memory was 203.9 MB in the beginning and 844.1 MB in the end (delta: 640.2 MB). Free memory was 155.1 MB in the beginning and 325.4 MB in the end (delta: -170.3 MB). Peak memory consumption was 716.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ExceptionOrErrorResult: IllegalArgumentException: unknown symbol (const Int (Array Int Int)) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalArgumentException: unknown symbol (const Int (Array Int Int)): de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:238) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...