/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-simple/dll2n_append_equal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:37:43,324 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:37:43,326 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:37:43,350 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:37:43,350 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:37:43,351 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:37:43,353 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:37:43,355 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:37:43,356 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:37:43,357 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:37:43,358 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:37:43,359 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:37:43,359 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:37:43,360 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:37:43,361 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:37:43,362 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:37:43,363 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:37:43,364 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:37:43,365 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:37:43,367 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:37:43,368 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:37:43,369 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:37:43,370 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:37:43,371 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:37:43,374 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:37:43,374 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:37:43,374 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:37:43,375 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:37:43,375 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:37:43,376 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:37:43,376 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:37:43,377 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:37:43,378 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:37:43,378 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:37:43,379 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:37:43,380 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:37:43,380 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:37:43,381 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:37:43,381 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:37:43,382 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:37:43,382 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:37:43,383 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 10:37:43,406 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:37:43,407 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:37:43,408 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:37:43,408 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:37:43,408 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:37:43,409 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:37:43,409 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:37:43,409 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:37:43,409 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:37:43,409 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:37:43,410 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:37:43,410 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:37:43,410 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:37:43,410 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:37:43,410 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:37:43,410 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:37:43,411 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:37:43,411 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:37:43,411 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:37:43,411 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:37:43,411 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:37:43,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:37:43,412 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:37:43,412 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:37:43,412 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:37:43,413 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:37:43,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:37:43,413 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:37:43,413 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:37:43,413 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 10:37:43,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:37:43,752 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:37:43,760 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:37:43,762 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:37:43,764 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:37:43,765 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2n_append_equal.i [2020-10-13 10:37:43,841 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a2f471e14/eeb20e430edf420f8416c931c05d8562/FLAG79718ace1 [2020-10-13 10:37:44,408 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:37:44,412 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/dll2n_append_equal.i [2020-10-13 10:37:44,432 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a2f471e14/eeb20e430edf420f8416c931c05d8562/FLAG79718ace1 [2020-10-13 10:37:44,755 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a2f471e14/eeb20e430edf420f8416c931c05d8562 [2020-10-13 10:37:44,766 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:37:44,768 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:37:44,769 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:37:44,769 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:37:44,773 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:37:44,774 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:37:44" (1/1) ... [2020-10-13 10:37:44,777 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e4e6462 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:37:44, skipping insertion in model container [2020-10-13 10:37:44,777 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:37:44" (1/1) ... [2020-10-13 10:37:44,785 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:37:44,841 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:37:45,278 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:37:45,296 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:37:45,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:37:45,413 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:37:45,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:37:45 WrapperNode [2020-10-13 10:37:45,414 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:37:45,415 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:37:45,415 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:37:45,415 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:37:45,430 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:37:45" (1/1) ... [2020-10-13 10:37:45,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:37:45" (1/1) ... [2020-10-13 10:37:45,447 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:37:45" (1/1) ... [2020-10-13 10:37:45,448 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:37:45" (1/1) ... [2020-10-13 10:37:45,466 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:37:45" (1/1) ... [2020-10-13 10:37:45,476 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:37:45" (1/1) ... [2020-10-13 10:37:45,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:37:45" (1/1) ... [2020-10-13 10:37:45,494 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:37:45,495 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:37:45,495 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:37:45,495 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:37:45,497 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:37:45" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:37:45,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:37:45,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:37:45,562 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-13 10:37:45,562 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-13 10:37:45,562 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-13 10:37:45,563 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-10-13 10:37:45,563 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2020-10-13 10:37:45,563 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy [2020-10-13 10:37:45,563 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_append [2020-10-13 10:37:45,563 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:37:45,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:37:45,564 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-13 10:37:45,564 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-13 10:37:45,564 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-13 10:37:45,564 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-13 10:37:45,565 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-13 10:37:45,565 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-13 10:37:45,565 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-13 10:37:45,565 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-13 10:37:45,565 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-13 10:37:45,565 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-13 10:37:45,565 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-13 10:37:45,566 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-13 10:37:45,566 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-13 10:37:45,566 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-13 10:37:45,566 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-13 10:37:45,566 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-13 10:37:45,566 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-13 10:37:45,567 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-13 10:37:45,567 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-13 10:37:45,567 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-13 10:37:45,567 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-13 10:37:45,567 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-13 10:37:45,567 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-13 10:37:45,568 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-13 10:37:45,568 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-13 10:37:45,568 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-13 10:37:45,568 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-13 10:37:45,568 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-13 10:37:45,568 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-13 10:37:45,569 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-13 10:37:45,569 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-13 10:37:45,569 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-13 10:37:45,569 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-13 10:37:45,569 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-13 10:37:45,569 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-13 10:37:45,569 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-13 10:37:45,570 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-13 10:37:45,570 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-13 10:37:45,570 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-13 10:37:45,570 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-13 10:37:45,570 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-13 10:37:45,571 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-13 10:37:45,571 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-13 10:37:45,571 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-13 10:37:45,571 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-13 10:37:45,571 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-13 10:37:45,571 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-13 10:37:45,571 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-13 10:37:45,572 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-13 10:37:45,572 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-13 10:37:45,572 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-13 10:37:45,572 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-13 10:37:45,572 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 10:37:45,572 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-13 10:37:45,572 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-13 10:37:45,573 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-13 10:37:45,573 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-13 10:37:45,573 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-13 10:37:45,573 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-13 10:37:45,573 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-13 10:37:45,573 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-13 10:37:45,574 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 10:37:45,574 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-13 10:37:45,574 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-13 10:37:45,574 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-13 10:37:45,574 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 10:37:45,574 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-13 10:37:45,575 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-13 10:37:45,575 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-13 10:37:45,575 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-13 10:37:45,575 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-13 10:37:45,575 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-13 10:37:45,575 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-13 10:37:45,575 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-13 10:37:45,576 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-13 10:37:45,576 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-13 10:37:45,576 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-13 10:37:45,576 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-13 10:37:45,576 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-13 10:37:45,576 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-13 10:37:45,576 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-13 10:37:45,577 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-13 10:37:45,577 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-13 10:37:45,577 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-13 10:37:45,577 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-13 10:37:45,577 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-13 10:37:45,577 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-13 10:37:45,577 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-13 10:37:45,578 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-13 10:37:45,578 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-13 10:37:45,578 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-13 10:37:45,578 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-13 10:37:45,578 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-13 10:37:45,578 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-13 10:37:45,578 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-13 10:37:45,579 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-13 10:37:45,579 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-13 10:37:45,579 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-13 10:37:45,579 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-13 10:37:45,579 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-13 10:37:45,579 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-13 10:37:45,579 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-13 10:37:45,580 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-13 10:37:45,580 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-13 10:37:45,580 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-13 10:37:45,580 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-13 10:37:45,580 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-10-13 10:37:45,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 10:37:45,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-13 10:37:45,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 10:37:45,581 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2020-10-13 10:37:45,581 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy [2020-10-13 10:37:45,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-13 10:37:45,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 10:37:45,582 INFO L130 BoogieDeclarations]: Found specification of procedure dll_append [2020-10-13 10:37:45,582 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:37:45,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 10:37:45,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-13 10:37:45,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 10:37:45,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:37:45,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:37:46,039 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-13 10:37:46,189 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:37:46,189 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-13 10:37:46,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:37:46 BoogieIcfgContainer [2020-10-13 10:37:46,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:37:46,196 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:37:46,196 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:37:46,199 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:37:46,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:37:44" (1/3) ... [2020-10-13 10:37:46,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b44346b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:37:46, skipping insertion in model container [2020-10-13 10:37:46,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:37:45" (2/3) ... [2020-10-13 10:37:46,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b44346b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:37:46, skipping insertion in model container [2020-10-13 10:37:46,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:37:46" (3/3) ... [2020-10-13 10:37:46,203 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2n_append_equal.i [2020-10-13 10:37:46,213 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:37:46,220 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 10:37:46,231 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 10:37:46,250 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:37:46,250 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:37:46,251 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:37:46,251 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:37:46,251 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:37:46,251 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:37:46,251 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:37:46,251 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:37:46,269 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-10-13 10:37:46,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-13 10:37:46,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:37:46,278 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:37:46,278 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:37:46,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:37:46,285 INFO L82 PathProgramCache]: Analyzing trace with hash -683309345, now seen corresponding path program 1 times [2020-10-13 10:37:46,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:37:46,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1218669739] [2020-10-13 10:37:46,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:37:46,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:37:46,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:37:46,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:37:47,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:37:47,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:37:47,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 10:37:47,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:37:47,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1293 [2020-10-13 10:37:47,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:37:47,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:37:47,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:37:47,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:37:47,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 20 [2020-10-13 10:37:47,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:37:47,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:37:47,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:37:47,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:37:47,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:37:47,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:37:47,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:37:47,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:37:47,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:37:47,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:37:47,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:37:47,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:37:47,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:37:47,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:37:47,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:37:47,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:37:47,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:37:47,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:37:47,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 10:37:47,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:37:47,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:37:47,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 10:37:47,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:37:47,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:37:47,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 10:37:47,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:37:47,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:37:47,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:37:47,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 10:37:47,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:37:47,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 10:37:47,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:37:47,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:37:47,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 10:37:47,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:37:47,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:37:47,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:37:48,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:37:48,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:37:48,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:37:48,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:37:48,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:37:48,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 10:37:48,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:37:48,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:37:48,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:37:48,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:37:48,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:37:48,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:37:48,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1218669739] [2020-10-13 10:37:48,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:37:48,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 10:37:48,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857110725] [2020-10-13 10:37:48,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 10:37:48,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:37:48,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 10:37:48,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-13 10:37:48,059 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 7 states. [2020-10-13 10:37:48,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:37:48,408 INFO L93 Difference]: Finished difference Result 100 states and 130 transitions. [2020-10-13 10:37:48,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 10:37:48,410 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-10-13 10:37:48,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:37:48,424 INFO L225 Difference]: With dead ends: 100 [2020-10-13 10:37:48,424 INFO L226 Difference]: Without dead ends: 43 [2020-10-13 10:37:48,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:37:48,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-13 10:37:48,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2020-10-13 10:37:48,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-13 10:37:48,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2020-10-13 10:37:48,495 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 29 [2020-10-13 10:37:48,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:37:48,496 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2020-10-13 10:37:48,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 10:37:48,496 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2020-10-13 10:37:48,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-13 10:37:48,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:37:48,499 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 10:37:48,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:37:48,500 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:37:48,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:37:48,500 INFO L82 PathProgramCache]: Analyzing trace with hash 197719891, now seen corresponding path program 1 times [2020-10-13 10:37:48,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:37:48,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975586419] [2020-10-13 10:37:48,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:37:48,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:37:48,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:37:48,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:37:49,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:37:49,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:37:50,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:37:50,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:37:51,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:37:51,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:37:52,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:37:52,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:37:53,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:37:53,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 10:37:53,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 10:37:53,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 10:37:53,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:37:53,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:37:53,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 10:37:53,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 10:37:53,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:37:53,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:37:53,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:37:53,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:37:53,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:37:53,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:37:53,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:37:53,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:37:53,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:37:53,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:37:53,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:37:53,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:37:53,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:37:53,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:37:53,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:37:53,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:37:53,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:37:53,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 10:37:53,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:37:53,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 10:37:53,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:37:53,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:37:53,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 10:37:53,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 10:37:53,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:37:53,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 10:37:53,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:37:53,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:37:53,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:37:53,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:37:53,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:37:53,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 10:37:53,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:37:53,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:37:53,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:37:53,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:37:53,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:37:53,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 10:37:53,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:37:53,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:37:53,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:37:53,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 10:37:53,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:37:53,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 10:37:53,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:37:53,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:37:53,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 10:37:53,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:37:53,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:37:53,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:37:53,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:37:53,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:37:53,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:37:53,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:37:53,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:37:53,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 10:37:53,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:37:53,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:37:53,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:37:53,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:37:53,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:37:53,725 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 10:37:53,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975586419] [2020-10-13 10:37:53,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:37:53,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 10:37:53,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486365697] [2020-10-13 10:37:53,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 10:37:53,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:37:53,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 10:37:53,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:37:53,732 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 5 states. [2020-10-13 10:37:53,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:37:53,970 INFO L93 Difference]: Finished difference Result 73 states and 87 transitions. [2020-10-13 10:37:53,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 10:37:53,971 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-10-13 10:37:53,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:37:53,973 INFO L225 Difference]: With dead ends: 73 [2020-10-13 10:37:53,973 INFO L226 Difference]: Without dead ends: 43 [2020-10-13 10:37:53,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 10:37:53,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-13 10:37:53,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2020-10-13 10:37:53,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-13 10:37:54,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-10-13 10:37:54,001 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 39 [2020-10-13 10:37:54,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:37:54,002 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-10-13 10:37:54,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 10:37:54,003 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-10-13 10:37:54,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-13 10:37:54,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:37:54,006 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 10:37:54,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:37:54,007 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:37:54,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:37:54,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1607718443, now seen corresponding path program 1 times [2020-10-13 10:37:54,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:37:54,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [570116682] [2020-10-13 10:37:54,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:37:54,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:37:54,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:37:54,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:37:54,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:37:55,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:37:55,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:37:55,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:37:55,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:37:56,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:37:56,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:37:59,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:37:59,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 10:37:59,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 10:37:59,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 10:37:59,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:37:59,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:37:59,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 10:37:59,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 10:37:59,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-13 10:37:59,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:37:59,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:37:59,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:37:59,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:37:59,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:37:59,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:37:59,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:37:59,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:37:59,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:37:59,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:37:59,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:37:59,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:37:59,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:37:59,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:37:59,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:37:59,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:37:59,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 10:37:59,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:37:59,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 10:37:59,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:37:59,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:37:59,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:37:59,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:37:59,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:37:59,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 10:37:59,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:37:59,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:37:59,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:37:59,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:37:59,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:37:59,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 10:37:59,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:37:59,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:37:59,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:37:59,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:37:59,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:37:59,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 10:37:59,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:37:59,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:37:59,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:37:59,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 10:37:59,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:37:59,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 10:37:59,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:37:59,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 10:37:59,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:37:59,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 10:37:59,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:37:59,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:37:59,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:37:59,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:37:59,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:37:59,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:37:59,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:37:59,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 10:37:59,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:37:59,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:37:59,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:37:59,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:37:59,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:37:59,396 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-13 10:37:59,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [570116682] [2020-10-13 10:37:59,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:37:59,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 10:37:59,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377175171] [2020-10-13 10:37:59,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 10:37:59,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:37:59,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 10:37:59,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:37:59,401 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 12 states. [2020-10-13 10:37:59,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:37:59,728 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2020-10-13 10:37:59,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 10:37:59,729 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 39 [2020-10-13 10:37:59,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:37:59,732 INFO L225 Difference]: With dead ends: 57 [2020-10-13 10:37:59,732 INFO L226 Difference]: Without dead ends: 54 [2020-10-13 10:37:59,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:37:59,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-13 10:37:59,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 46. [2020-10-13 10:37:59,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-13 10:37:59,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2020-10-13 10:37:59,751 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 39 [2020-10-13 10:37:59,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:37:59,752 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2020-10-13 10:37:59,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 10:37:59,752 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2020-10-13 10:37:59,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-13 10:37:59,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:37:59,754 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 10:37:59,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 10:37:59,755 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:37:59,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:37:59,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1607716769, now seen corresponding path program 1 times [2020-10-13 10:37:59,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:37:59,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835243837] [2020-10-13 10:37:59,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:37:59,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:37:59,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:37:59,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:37:59,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:00,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:04,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:38:04,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 10:38:04,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:38:04,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 10:38:04,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:38:04,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:38:04,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:38:04,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 10:38:04,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:38:04,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:38:04,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:38:04,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:04,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:38:04,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:38:04,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:38:04,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:38:04,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:38:04,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:38:04,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:38:04,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:38:04,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:38:04,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:38:04,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:38:04,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:04,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:38:04,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 10:38:04,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:38:04,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 10:38:04,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:38:04,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:38:04,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 10:38:04,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 10:38:04,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:38:04,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 10:38:04,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:38:04,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:04,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:38:04,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:38:04,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:38:04,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 10:38:04,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:38:04,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:38:04,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:38:04,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:38:04,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:38:04,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 10:38:04,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:38:04,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:04,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:38:04,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 10:38:04,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:38:04,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 10:38:04,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:38:04,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:38:04,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 10:38:04,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:38:04,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:38:04,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:38:04,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:38:04,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:04,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:38:04,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:38:04,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:38:04,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 10:38:04,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:38:04,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:38:04,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:38:04,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:38:04,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:38:04,992 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 10:38:04,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1835243837] [2020-10-13 10:38:04,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:38:04,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 10:38:04,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418163178] [2020-10-13 10:38:04,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 10:38:04,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:38:04,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 10:38:04,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-13 10:38:04,995 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand 8 states. [2020-10-13 10:38:05,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:38:05,178 INFO L93 Difference]: Finished difference Result 81 states and 94 transitions. [2020-10-13 10:38:05,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 10:38:05,178 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2020-10-13 10:38:05,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:38:05,180 INFO L225 Difference]: With dead ends: 81 [2020-10-13 10:38:05,180 INFO L226 Difference]: Without dead ends: 52 [2020-10-13 10:38:05,181 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:38:05,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-13 10:38:05,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 48. [2020-10-13 10:38:05,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-13 10:38:05,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2020-10-13 10:38:05,189 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 39 [2020-10-13 10:38:05,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:38:05,189 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2020-10-13 10:38:05,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 10:38:05,189 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2020-10-13 10:38:05,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-13 10:38:05,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:38:05,191 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:38:05,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 10:38:05,191 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:38:05,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:38:05,192 INFO L82 PathProgramCache]: Analyzing trace with hash 974185811, now seen corresponding path program 1 times [2020-10-13 10:38:05,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:38:05,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251527512] [2020-10-13 10:38:05,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:38:05,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:38:05,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:05,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:05,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:07,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:38:07,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 10:38:07,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:38:07,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2236 [2020-10-13 10:38:07,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:38:07,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 10:38:07,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:38:07,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 10:38:07,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:38:07,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:38:07,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:38:07,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:07,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:38:07,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:38:07,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:38:07,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:38:07,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:38:07,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:38:07,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:38:07,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:38:07,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:38:07,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:38:07,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:38:07,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:07,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:38:07,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 10:38:07,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:38:07,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-13 10:38:07,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:38:07,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:38:07,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:38:07,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 10:38:07,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:38:07,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 10:38:07,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:38:07,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:07,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:38:07,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:38:07,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:38:07,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:38:07,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:38:07,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:38:07,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:38:07,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:38:07,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:38:07,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 10:38:07,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:38:07,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:07,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:38:07,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:38:07,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:38:07,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 10:38:07,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:38:07,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:38:07,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:38:07,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:38:07,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:38:07,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 10:38:07,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:38:07,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:07,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:38:07,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 10:38:07,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:38:07,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 10:38:07,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:38:07,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:38:07,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:38:07,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 10:38:07,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:38:08,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:38:08,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:38:08,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:08,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:38:08,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:38:08,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:38:08,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 10:38:08,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:38:08,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:38:08,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:38:08,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 10:38:08,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:38:08,194 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 10:38:08,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251527512] [2020-10-13 10:38:08,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:38:08,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 10:38:08,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096831682] [2020-10-13 10:38:08,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 10:38:08,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:38:08,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 10:38:08,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:38:08,197 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 19 states. [2020-10-13 10:38:08,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:38:08,926 INFO L93 Difference]: Finished difference Result 80 states and 93 transitions. [2020-10-13 10:38:08,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 10:38:08,927 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 49 [2020-10-13 10:38:08,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:38:08,928 INFO L225 Difference]: With dead ends: 80 [2020-10-13 10:38:08,928 INFO L226 Difference]: Without dead ends: 44 [2020-10-13 10:38:08,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=99, Invalid=771, Unknown=0, NotChecked=0, Total=870 [2020-10-13 10:38:08,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-13 10:38:08,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-10-13 10:38:08,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-13 10:38:08,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2020-10-13 10:38:08,936 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 49 [2020-10-13 10:38:08,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:38:08,937 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2020-10-13 10:38:08,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 10:38:08,937 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2020-10-13 10:38:08,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 10:38:08,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:38:08,939 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:38:08,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 10:38:08,939 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:38:08,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:38:08,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1981397546, now seen corresponding path program 1 times [2020-10-13 10:38:08,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:38:08,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [423952799] [2020-10-13 10:38:08,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:38:08,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:38:08,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:09,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:09,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:09,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:09,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:10,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:11,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:12,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:13,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:38:13,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-13 10:38:13,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 10:38:13,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 10:38:13,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:38:13,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:38:13,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-13 10:38:13,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 10:38:13,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:38:14,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:38:14,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:38:14,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:14,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:38:14,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:38:14,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:38:14,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:38:14,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:38:14,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:38:14,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:38:14,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:38:14,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:38:14,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:38:14,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:38:14,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:14,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:38:14,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 10:38:14,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:38:14,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 10:38:14,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:38:14,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:38:14,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:38:14,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:38:14,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:38:14,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 10:38:14,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:38:14,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:14,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:38:14,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:38:14,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:38:14,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 10:38:14,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:38:14,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:38:14,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:38:14,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:38:14,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:38:14,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 10:38:14,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:38:14,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:14,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:38:14,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:38:14,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:38:14,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:38:14,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:38:14,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:38:14,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:38:14,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:38:14,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:38:14,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 10:38:14,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:38:14,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:14,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:14,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:14,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:38:14,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-13 10:38:14,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:38:14,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-10-13 10:38:14,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:38:14,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 10:38:14,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:38:14,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 10:38:14,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:38:14,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:38:14,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:38:14,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:14,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:38:14,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:38:14,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:38:14,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 10:38:14,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:38:14,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:38:14,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:38:14,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:38:14,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:38:14,971 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-13 10:38:14,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [423952799] [2020-10-13 10:38:14,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:38:14,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 10:38:14,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58291093] [2020-10-13 10:38:14,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 10:38:14,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:38:14,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 10:38:14,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:38:14,974 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand 12 states. [2020-10-13 10:38:15,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:38:15,508 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2020-10-13 10:38:15,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 10:38:15,513 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 52 [2020-10-13 10:38:15,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:38:15,515 INFO L225 Difference]: With dead ends: 63 [2020-10-13 10:38:15,515 INFO L226 Difference]: Without dead ends: 60 [2020-10-13 10:38:15,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:38:15,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-13 10:38:15,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 51. [2020-10-13 10:38:15,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-13 10:38:15,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2020-10-13 10:38:15,524 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 52 [2020-10-13 10:38:15,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:38:15,524 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2020-10-13 10:38:15,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 10:38:15,525 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2020-10-13 10:38:15,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 10:38:15,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:38:15,526 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:38:15,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 10:38:15,526 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:38:15,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:38:15,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1981395872, now seen corresponding path program 1 times [2020-10-13 10:38:15,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:38:15,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1061445074] [2020-10-13 10:38:15,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:38:15,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:38:15,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:16,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:18,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:38:18,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-13 10:38:18,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:38:18,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2906 [2020-10-13 10:38:18,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:38:18,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 10:38:18,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:38:18,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 10:38:18,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:38:18,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:38:18,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:38:18,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:18,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:38:18,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:38:18,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:38:18,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:38:18,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:38:18,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:38:18,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:38:18,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:38:18,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:38:18,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:38:18,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:38:18,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:18,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:38:18,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 10:38:18,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:38:18,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-13 10:38:18,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:38:18,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:38:18,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:38:18,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 10:38:18,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:38:18,912 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 39 [2020-10-13 10:38:19,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 10:38:19,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:38:19,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:19,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:38:19,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:38:19,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:38:19,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:38:19,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:38:19,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:38:19,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:38:19,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:38:19,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:38:19,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 10:38:19,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:38:19,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:19,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:38:19,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:38:19,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:38:19,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 10:38:19,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:38:19,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:38:19,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:38:19,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:38:19,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:38:19,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 10:38:19,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:38:19,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:19,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:38:19,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-13 10:38:19,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:38:19,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-13 10:38:19,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:38:19,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:38:19,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:38:19,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 10:38:19,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:38:19,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:38:19,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:38:19,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:19,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:38:19,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:38:19,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:38:19,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 10:38:19,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:38:19,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:38:19,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:38:19,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 10:38:19,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:38:19,797 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 10:38:19,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1061445074] [2020-10-13 10:38:19,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:38:19,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 10:38:19,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382676216] [2020-10-13 10:38:19,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 10:38:19,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:38:19,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 10:38:19,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:38:19,800 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand 21 states. [2020-10-13 10:38:21,310 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 49 [2020-10-13 10:38:21,588 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 63 [2020-10-13 10:38:21,882 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 61 [2020-10-13 10:38:22,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:38:22,059 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2020-10-13 10:38:22,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-13 10:38:22,060 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 52 [2020-10-13 10:38:22,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:38:22,064 INFO L225 Difference]: With dead ends: 57 [2020-10-13 10:38:22,065 INFO L226 Difference]: Without dead ends: 47 [2020-10-13 10:38:22,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=118, Invalid=1004, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 10:38:22,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-13 10:38:22,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2020-10-13 10:38:22,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-13 10:38:22,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2020-10-13 10:38:22,074 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 52 [2020-10-13 10:38:22,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:38:22,074 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2020-10-13 10:38:22,074 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 10:38:22,074 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2020-10-13 10:38:22,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 10:38:22,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:38:22,076 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:38:22,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 10:38:22,076 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:38:22,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:38:22,076 INFO L82 PathProgramCache]: Analyzing trace with hash -603975983, now seen corresponding path program 1 times [2020-10-13 10:38:22,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:38:22,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699494279] [2020-10-13 10:38:22,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:38:22,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:38:22,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:22,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:22,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:22,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:23,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:24,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:24,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:25,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:25,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:25,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:27,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:38:27,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 10:38:27,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 10:38:27,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 10:38:27,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:38:27,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:38:27,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-13 10:38:27,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 10:38:27,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:38:27,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:38:27,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:38:27,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:27,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:38:27,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:38:27,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:38:27,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:38:27,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:38:27,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:38:27,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:38:27,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:38:27,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:38:27,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:38:27,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:38:27,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:27,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:38:27,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 10:38:27,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:38:27,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 10:38:27,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:38:27,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:38:27,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:38:27,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:38:27,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:38:27,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 10:38:27,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:38:27,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:27,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:38:27,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:38:27,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:38:27,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:38:27,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:38:27,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:38:27,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:38:27,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:38:27,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:38:27,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 10:38:27,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:38:27,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:27,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:38:27,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:38:27,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:38:27,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:38:27,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:38:27,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:38:27,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:38:27,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:38:27,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:38:27,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 10:38:27,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:38:27,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:27,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:27,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:27,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:27,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:38:27,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 10:38:27,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:38:27,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 386 [2020-10-13 10:38:27,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:38:27,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:38:27,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:38:27,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 10:38:27,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:38:27,971 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 31 [2020-10-13 10:38:28,111 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 36 [2020-10-13 10:38:28,348 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 49 [2020-10-13 10:38:28,514 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 40 [2020-10-13 10:38:28,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:38:28,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:38:28,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:28,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:38:28,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:38:28,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:38:28,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:38:28,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:38:28,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:38:28,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:38:28,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:38:28,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:38:28,555 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-13 10:38:28,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699494279] [2020-10-13 10:38:28,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:38:28,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 10:38:28,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753968840] [2020-10-13 10:38:28,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 10:38:28,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:38:28,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 10:38:28,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:38:28,557 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand 14 states. [2020-10-13 10:38:28,984 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 45 [2020-10-13 10:38:29,216 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2020-10-13 10:38:29,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:38:29,419 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2020-10-13 10:38:29,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 10:38:29,419 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2020-10-13 10:38:29,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:38:29,421 INFO L225 Difference]: With dead ends: 65 [2020-10-13 10:38:29,421 INFO L226 Difference]: Without dead ends: 62 [2020-10-13 10:38:29,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2020-10-13 10:38:29,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-13 10:38:29,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 53. [2020-10-13 10:38:29,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-13 10:38:29,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2020-10-13 10:38:29,430 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 54 [2020-10-13 10:38:29,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:38:29,431 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2020-10-13 10:38:29,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 10:38:29,431 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2020-10-13 10:38:29,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 10:38:29,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:38:29,432 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:38:29,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 10:38:29,433 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:38:29,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:38:29,433 INFO L82 PathProgramCache]: Analyzing trace with hash -603974309, now seen corresponding path program 1 times [2020-10-13 10:38:29,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:38:29,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [479672006] [2020-10-13 10:38:29,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:38:29,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:38:29,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:30,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:38:30,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 10:38:30,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:38:30,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1398 [2020-10-13 10:38:30,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:38:30,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-13 10:38:30,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:38:30,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 10:38:30,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:38:31,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:38:31,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:38:31,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:31,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:38:31,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:38:31,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:38:31,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:38:31,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:38:31,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:38:31,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:38:31,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:38:31,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:38:31,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:38:31,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:38:31,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:31,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:38:31,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 10:38:31,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:38:31,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-13 10:38:31,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:38:31,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 10:38:31,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:38:31,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 10:38:31,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:38:31,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 10:38:31,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:38:31,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:31,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:38:31,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:38:31,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:38:31,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 10:38:31,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:38:31,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:38:31,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:38:31,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:38:31,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:38:31,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 10:38:31,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:38:31,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:31,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:38:31,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:38:31,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:38:31,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 10:38:31,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:38:31,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:38:31,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:38:31,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:38:31,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:38:32,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 10:38:32,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:38:32,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:32,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:38:32,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 10:38:32,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:38:32,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-13 10:38:32,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:38:32,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 10:38:32,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:38:32,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 10:38:32,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:38:33,046 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-13 10:38:33,497 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 85 [2020-10-13 10:38:33,849 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 78 [2020-10-13 10:38:34,670 WARN L193 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 112 [2020-10-13 10:38:35,810 WARN L193 SmtUtils]: Spent 802.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 143 [2020-10-13 10:38:35,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:38:35,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:38:35,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:35,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:38:35,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:38:35,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:38:35,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 10:38:35,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:38:35,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:38:35,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:38:35,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 10:38:35,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:38:36,478 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 53 [2020-10-13 10:38:36,517 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-13 10:38:36,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [479672006] [2020-10-13 10:38:36,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:38:36,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-13 10:38:36,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707366975] [2020-10-13 10:38:36,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-13 10:38:36,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:38:36,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-13 10:38:36,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=852, Unknown=0, NotChecked=0, Total=930 [2020-10-13 10:38:36,519 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand 31 states. [2020-10-13 10:38:37,264 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 10:38:38,486 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-13 10:38:39,903 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-10-13 10:38:41,043 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 96 [2020-10-13 10:38:42,430 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 149 DAG size of output: 111 [2020-10-13 10:38:43,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:38:43,140 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2020-10-13 10:38:43,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-13 10:38:43,141 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 54 [2020-10-13 10:38:43,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:38:43,142 INFO L225 Difference]: With dead ends: 62 [2020-10-13 10:38:43,142 INFO L226 Difference]: Without dead ends: 60 [2020-10-13 10:38:43,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=197, Invalid=2253, Unknown=0, NotChecked=0, Total=2450 [2020-10-13 10:38:43,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-13 10:38:43,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-10-13 10:38:43,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-13 10:38:43,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2020-10-13 10:38:43,155 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 54 [2020-10-13 10:38:43,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:38:43,155 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2020-10-13 10:38:43,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-13 10:38:43,155 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2020-10-13 10:38:43,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 10:38:43,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:38:43,157 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:38:43,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 10:38:43,157 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:38:43,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:38:43,157 INFO L82 PathProgramCache]: Analyzing trace with hash -598681108, now seen corresponding path program 1 times [2020-10-13 10:38:43,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:38:43,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1312625046] [2020-10-13 10:38:43,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:38:43,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:38:43,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:43,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:45,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:45,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:47,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:47,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:48,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:38:48,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 10:38:48,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 10:38:48,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 10:38:48,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:38:48,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 10:38:48,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:38:48,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 10:38:48,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:38:48,388 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2020-10-13 10:38:48,585 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 36 [2020-10-13 10:38:48,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:38:48,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:38:48,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:48,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:38:48,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:38:48,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:38:48,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:38:48,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:38:48,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:38:48,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:38:48,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:38:48,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:38:48,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:38:48,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:38:48,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:48,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:38:48,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 10:38:48,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:38:48,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-13 10:38:48,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:38:48,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:38:48,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:38:48,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 10:38:48,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:38:49,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 10:38:49,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:38:49,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:49,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:38:49,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:38:49,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:38:49,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:38:49,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:38:49,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:38:49,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:38:49,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:38:49,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:38:49,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 10:38:49,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:38:49,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:49,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:38:49,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:38:49,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:38:49,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 10:38:49,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:38:49,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:38:49,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:38:49,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:38:49,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:38:49,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 10:38:49,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:38:49,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:49,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:49,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:50,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:38:50,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 10:38:50,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:38:50,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 681 [2020-10-13 10:38:50,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:38:50,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 10:38:50,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:38:50,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 10:38:50,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:38:50,480 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2020-10-13 10:38:51,192 WARN L193 SmtUtils]: Spent 603.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 83 [2020-10-13 10:38:51,903 WARN L193 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 88 [2020-10-13 10:38:52,846 WARN L193 SmtUtils]: Spent 827.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 95 [2020-10-13 10:38:53,640 WARN L193 SmtUtils]: Spent 605.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 118 [2020-10-13 10:38:53,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:38:53,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:38:53,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:38:53,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:38:53,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:38:53,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:38:53,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 10:38:53,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:38:53,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:38:53,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:38:53,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 10:38:53,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:38:53,920 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 10:38:53,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1312625046] [2020-10-13 10:38:53,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:38:53,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-13 10:38:53,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982313541] [2020-10-13 10:38:53,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-13 10:38:53,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:38:53,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-13 10:38:53,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=587, Unknown=0, NotChecked=0, Total=650 [2020-10-13 10:38:53,922 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand 26 states. [2020-10-13 10:38:55,885 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2020-10-13 10:38:56,288 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 81 [2020-10-13 10:38:57,143 WARN L193 SmtUtils]: Spent 732.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 92 [2020-10-13 10:38:58,084 WARN L193 SmtUtils]: Spent 798.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 92 [2020-10-13 10:38:58,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:38:58,700 INFO L93 Difference]: Finished difference Result 68 states and 74 transitions. [2020-10-13 10:38:58,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-13 10:38:58,701 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 56 [2020-10-13 10:38:58,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:38:58,703 INFO L225 Difference]: With dead ends: 68 [2020-10-13 10:38:58,703 INFO L226 Difference]: Without dead ends: 65 [2020-10-13 10:38:58,706 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=185, Invalid=1795, Unknown=0, NotChecked=0, Total=1980 [2020-10-13 10:38:58,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-13 10:38:58,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 55. [2020-10-13 10:38:58,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-13 10:38:58,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2020-10-13 10:38:58,716 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 56 [2020-10-13 10:38:58,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:38:58,716 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2020-10-13 10:38:58,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-13 10:38:58,717 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2020-10-13 10:38:58,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 10:38:58,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:38:58,718 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:38:58,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 10:38:58,718 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:38:58,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:38:58,718 INFO L82 PathProgramCache]: Analyzing trace with hash -598679434, now seen corresponding path program 1 times [2020-10-13 10:38:58,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:38:58,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11721302] [2020-10-13 10:38:58,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:38:58,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:38:58,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:00,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:01,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:01,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 10:39:01,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:39:01,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2602 [2020-10-13 10:39:01,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:01,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-13 10:39:01,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:39:01,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 10:39:01,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:39:01,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:39:01,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:01,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:01,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:01,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:39:01,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:39:01,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:39:01,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:01,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:39:01,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:39:01,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:39:01,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:39:01,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:39:01,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:01,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:01,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:01,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 10:39:01,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:39:01,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-13 10:39:01,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:01,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 10:39:01,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:39:01,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 10:39:01,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:39:02,183 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 46 [2020-10-13 10:39:02,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 10:39:02,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:02,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:02,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:02,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:39:02,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:39:02,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 10:39:02,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:02,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:39:02,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:39:02,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:39:02,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:39:02,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 10:39:02,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:02,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:02,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:02,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:39:02,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:39:02,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 10:39:02,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:02,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:39:02,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:39:02,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 10:39:02,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:39:02,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 10:39:02,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:02,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:02,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:02,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 10:39:02,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:39:02,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-13 10:39:02,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:02,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 10:39:02,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:39:02,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 10:39:02,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:39:04,290 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 45 [2020-10-13 10:39:04,710 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 51 [2020-10-13 10:39:05,295 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 66 [2020-10-13 10:39:07,069 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 149 DAG size of output: 140 [2020-10-13 10:39:32,938 WARN L193 SmtUtils]: Spent 21.71 s on a formula simplification. DAG size of input: 255 DAG size of output: 175 [2020-10-13 10:39:32,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:39:32,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:32,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:32,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:32,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:39:32,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:39:32,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 10:39:32,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:32,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:39:32,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:39:32,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 10:39:32,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:39:33,646 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2020-10-13 10:39:33,688 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 20 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-13 10:39:33,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11721302] [2020-10-13 10:39:33,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:39:33,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-13 10:39:33,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627997595] [2020-10-13 10:39:33,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-13 10:39:33,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:39:33,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-13 10:39:33,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2020-10-13 10:39:33,691 INFO L87 Difference]: Start difference. First operand 55 states and 61 transitions. Second operand 32 states. [2020-10-13 10:39:42,444 WARN L193 SmtUtils]: Spent 7.92 s on a formula simplification that was a NOOP. DAG size: 178 [2020-10-13 10:39:43,683 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2020-10-13 10:39:49,346 WARN L193 SmtUtils]: Spent 4.97 s on a formula simplification that was a NOOP. DAG size: 184 [2020-10-13 10:39:52,940 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-13 10:39:55,186 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2020-10-13 10:39:55,774 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 63 [2020-10-13 10:39:56,971 WARN L193 SmtUtils]: Spent 882.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 113 [2020-10-13 10:40:02,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:40:02,695 INFO L93 Difference]: Finished difference Result 65 states and 73 transitions. [2020-10-13 10:40:02,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-13 10:40:02,696 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 56 [2020-10-13 10:40:02,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:40:02,697 INFO L225 Difference]: With dead ends: 65 [2020-10-13 10:40:02,698 INFO L226 Difference]: Without dead ends: 63 [2020-10-13 10:40:02,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 48.2s TimeCoverageRelationStatistics Valid=194, Invalid=2356, Unknown=0, NotChecked=0, Total=2550 [2020-10-13 10:40:02,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-13 10:40:02,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 56. [2020-10-13 10:40:02,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-13 10:40:02,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 62 transitions. [2020-10-13 10:40:02,711 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 62 transitions. Word has length 56 [2020-10-13 10:40:02,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:40:02,711 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 62 transitions. [2020-10-13 10:40:02,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-13 10:40:02,711 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 62 transitions. [2020-10-13 10:40:02,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 10:40:02,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:40:02,712 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:40:02,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 10:40:02,713 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:40:02,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:40:02,713 INFO L82 PathProgramCache]: Analyzing trace with hash 248218892, now seen corresponding path program 2 times [2020-10-13 10:40:02,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:40:02,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1986190467] [2020-10-13 10:40:02,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:40:02,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:02,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:02,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:03,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:03,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:04,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:04,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:04,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:05,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:05,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:06,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:07,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:08,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:08,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 10:40:08,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 10:40:08,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5482 [2020-10-13 10:40:08,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:08,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:40:08,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-13 10:40:08,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 10:40:08,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:40:08,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:40:08,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:08,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:08,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:08,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:40:08,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:08,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:40:08,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:08,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:40:08,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:40:08,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:40:08,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:40:08,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:40:08,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:08,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:08,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:08,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 10:40:08,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:08,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 10:40:08,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:08,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:40:08,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:40:08,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:40:08,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:40:08,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 10:40:08,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:08,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:08,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:08,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:40:08,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:08,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:40:08,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:08,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:40:08,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:40:08,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:40:08,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:08,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 10:40:08,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:08,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:08,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:08,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:40:08,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:08,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:40:08,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:08,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:40:08,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:40:08,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:40:08,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:08,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 10:40:08,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:08,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:08,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:08,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:08,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:08,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:08,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 10:40:08,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:40:08,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 398 [2020-10-13 10:40:08,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:08,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:40:08,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:40:08,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 10:40:08,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:09,185 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 37 [2020-10-13 10:40:09,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:40:09,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:09,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:09,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:09,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:40:09,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:09,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 10:40:09,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:09,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:40:09,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:40:09,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:40:09,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:09,312 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-13 10:40:09,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1986190467] [2020-10-13 10:40:09,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:40:09,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-13 10:40:09,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217336177] [2020-10-13 10:40:09,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:40:09,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:40:09,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:40:09,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:40:09,314 INFO L87 Difference]: Start difference. First operand 56 states and 62 transitions. Second operand 13 states. [2020-10-13 10:40:09,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:40:09,930 INFO L93 Difference]: Finished difference Result 62 states and 67 transitions. [2020-10-13 10:40:09,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 10:40:09,932 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 56 [2020-10-13 10:40:09,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:40:09,933 INFO L225 Difference]: With dead ends: 62 [2020-10-13 10:40:09,934 INFO L226 Difference]: Without dead ends: 59 [2020-10-13 10:40:09,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:40:09,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-13 10:40:09,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 57. [2020-10-13 10:40:09,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-13 10:40:09,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 63 transitions. [2020-10-13 10:40:09,944 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 63 transitions. Word has length 56 [2020-10-13 10:40:09,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:40:09,944 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 63 transitions. [2020-10-13 10:40:09,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:40:09,944 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 63 transitions. [2020-10-13 10:40:09,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 10:40:09,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:40:09,945 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:40:09,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 10:40:09,946 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:40:09,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:40:09,946 INFO L82 PathProgramCache]: Analyzing trace with hash 248220566, now seen corresponding path program 2 times [2020-10-13 10:40:09,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:40:09,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2010736694] [2020-10-13 10:40:09,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:40:09,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:09,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:11,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:11,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:12,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:12,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 10:40:12,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:40:12,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2978 [2020-10-13 10:40:12,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:12,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-13 10:40:12,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:40:12,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-13 10:40:12,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:13,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:40:13,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:13,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:13,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:13,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:40:13,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:13,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:40:13,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:13,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:40:13,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:40:13,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:40:13,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:13,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:40:13,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:13,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:13,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:13,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:13,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 10:40:13,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:40:13,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 473 [2020-10-13 10:40:13,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:13,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 10:40:13,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:40:13,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 10:40:13,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:14,087 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 42 [2020-10-13 10:40:14,225 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 30 [2020-10-13 10:40:14,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 10:40:14,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:14,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:14,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:14,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:40:14,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:14,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 10:40:14,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:14,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:40:14,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:40:14,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:40:14,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:14,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 10:40:14,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:14,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:14,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:14,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:40:14,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:14,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 10:40:14,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:14,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:40:14,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:40:14,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 10:40:14,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:14,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 10:40:14,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:14,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:14,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:14,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 10:40:14,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:14,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 10:40:14,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:14,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:40:14,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:40:14,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 10:40:14,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:15,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:40:15,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:15,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:15,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:15,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:40:15,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:15,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 10:40:15,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:15,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:40:15,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:40:15,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 10:40:15,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:15,845 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 32 [2020-10-13 10:40:15,870 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 23 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-13 10:40:15,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2010736694] [2020-10-13 10:40:15,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:40:15,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-13 10:40:15,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170084240] [2020-10-13 10:40:15,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-13 10:40:15,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:40:15,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-13 10:40:15,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2020-10-13 10:40:15,872 INFO L87 Difference]: Start difference. First operand 57 states and 63 transitions. Second operand 28 states. [2020-10-13 10:40:16,838 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2020-10-13 10:40:18,475 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2020-10-13 10:40:18,988 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2020-10-13 10:40:19,422 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 60 [2020-10-13 10:40:19,923 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 74 [2020-10-13 10:40:20,345 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2020-10-13 10:40:20,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:40:20,863 INFO L93 Difference]: Finished difference Result 76 states and 88 transitions. [2020-10-13 10:40:20,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-13 10:40:20,865 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 56 [2020-10-13 10:40:20,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:40:20,866 INFO L225 Difference]: With dead ends: 76 [2020-10-13 10:40:20,866 INFO L226 Difference]: Without dead ends: 69 [2020-10-13 10:40:20,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=162, Invalid=1818, Unknown=0, NotChecked=0, Total=1980 [2020-10-13 10:40:20,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-13 10:40:20,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2020-10-13 10:40:20,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-13 10:40:20,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 76 transitions. [2020-10-13 10:40:20,880 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 76 transitions. Word has length 56 [2020-10-13 10:40:20,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:40:20,881 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 76 transitions. [2020-10-13 10:40:20,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-13 10:40:20,881 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 76 transitions. [2020-10-13 10:40:20,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 10:40:20,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:40:20,882 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:40:20,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 10:40:20,883 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:40:20,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:40:20,883 INFO L82 PathProgramCache]: Analyzing trace with hash 194726471, now seen corresponding path program 2 times [2020-10-13 10:40:20,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:40:20,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077462671] [2020-10-13 10:40:20,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:40:20,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:20,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:21,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:23,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:24,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:25,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:25,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 10:40:25,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:40:25,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 10:40:25,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:25,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 10:40:25,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-13 10:40:25,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 10:40:25,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:26,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:40:26,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:26,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:26,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:26,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:40:26,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:26,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:40:26,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:26,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:40:26,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:40:26,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:40:26,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:26,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:40:26,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:26,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:26,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:26,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 10:40:26,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:26,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 10:40:26,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:26,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:40:26,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:40:26,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:40:26,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:26,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 10:40:26,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:26,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:26,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:26,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:40:26,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:26,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:40:26,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:26,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:40:26,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:40:26,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:40:26,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:26,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 10:40:26,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:26,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:26,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:26,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:40:26,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:26,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:40:26,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:26,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:40:26,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:40:26,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:40:26,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:26,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 10:40:26,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:26,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:26,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:26,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:26,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 10:40:26,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:40:26,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-10-13 10:40:26,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:26,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:40:26,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:40:26,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 10:40:26,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:27,199 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 43 [2020-10-13 10:40:27,770 WARN L193 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 49 [2020-10-13 10:40:30,455 WARN L193 SmtUtils]: Spent 2.40 s on a formula simplification. DAG size of input: 500 DAG size of output: 49 [2020-10-13 10:40:33,550 WARN L193 SmtUtils]: Spent 2.86 s on a formula simplification. DAG size of input: 500 DAG size of output: 49 [2020-10-13 10:40:35,989 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 438 DAG size of output: 42 [2020-10-13 10:40:36,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:40:36,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:36,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:36,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:36,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:40:36,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:36,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 10:40:36,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:36,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:40:36,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:40:36,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:40:36,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:36,220 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-13 10:40:36,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077462671] [2020-10-13 10:40:36,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:40:36,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 10:40:36,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137541715] [2020-10-13 10:40:36,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 10:40:36,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:40:36,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 10:40:36,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2020-10-13 10:40:36,222 INFO L87 Difference]: Start difference. First operand 67 states and 76 transitions. Second operand 18 states. [2020-10-13 10:40:36,958 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-10-13 10:40:38,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:40:38,222 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2020-10-13 10:40:38,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 10:40:38,230 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 58 [2020-10-13 10:40:38,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:40:38,231 INFO L225 Difference]: With dead ends: 80 [2020-10-13 10:40:38,231 INFO L226 Difference]: Without dead ends: 77 [2020-10-13 10:40:38,232 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=112, Invalid=880, Unknown=0, NotChecked=0, Total=992 [2020-10-13 10:40:38,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-13 10:40:38,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 67. [2020-10-13 10:40:38,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-13 10:40:38,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 76 transitions. [2020-10-13 10:40:38,251 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 76 transitions. Word has length 58 [2020-10-13 10:40:38,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:40:38,252 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 76 transitions. [2020-10-13 10:40:38,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 10:40:38,252 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 76 transitions. [2020-10-13 10:40:38,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 10:40:38,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:40:38,253 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:40:38,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 10:40:38,254 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:40:38,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:40:38,254 INFO L82 PathProgramCache]: Analyzing trace with hash 194728145, now seen corresponding path program 2 times [2020-10-13 10:40:38,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:40:38,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1216286878] [2020-10-13 10:40:38,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:40:38,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:38,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:39,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:40,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:41,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:43,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:43,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 10:40:43,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:40:43,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-13 10:40:43,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:43,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-13 10:40:43,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 10:40:43,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 10:40:43,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:43,831 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 35 [2020-10-13 10:40:43,985 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 31 [2020-10-13 10:40:44,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:40:44,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:44,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:44,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:44,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:40:44,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:44,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:40:44,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:44,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:40:44,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:40:44,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:40:44,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:44,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:40:44,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:44,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:44,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:44,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 10:40:44,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:44,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-13 10:40:44,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:44,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:40:44,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:40:44,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 10:40:44,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:45,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 10:40:45,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:45,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:45,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:45,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:40:45,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:45,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 10:40:45,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:45,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:40:45,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:40:45,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:40:45,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:40:45,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 10:40:45,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:45,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:45,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:45,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:40:45,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:45,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 10:40:45,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:45,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:40:45,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:40:45,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:40:45,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:45,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 10:40:45,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:45,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:45,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:45,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 10:40:45,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:45,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 541 [2020-10-13 10:40:45,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:45,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 10:40:45,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:40:45,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 10:40:45,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:57,132 WARN L193 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 216 DAG size of output: 122 [2020-10-13 10:41:04,007 WARN L193 SmtUtils]: Spent 5.80 s on a formula simplification. DAG size of input: 331 DAG size of output: 194 [2020-10-13 10:41:21,483 WARN L193 SmtUtils]: Spent 16.06 s on a formula simplification. DAG size of input: 406 DAG size of output: 217