/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 SingleStatement --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=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-simple/sll2n_update_all_reverse.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:18:53,328 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:18:53,332 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:18:53,359 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:18:53,359 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:18:53,360 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:18:53,362 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:18:53,364 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:18:53,366 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:18:53,367 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:18:53,368 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:18:53,369 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:18:53,370 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:18:53,371 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:18:53,372 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:18:53,373 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:18:53,375 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:18:53,376 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:18:53,378 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:18:53,380 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:18:53,382 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:18:53,383 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:18:53,384 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:18:53,385 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:18:53,388 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:18:53,388 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:18:53,389 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:18:53,390 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:18:53,390 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:18:53,391 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:18:53,392 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:18:53,393 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:18:53,394 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:18:53,395 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:18:53,396 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:18:53,396 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:18:53,397 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:18:53,398 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:18:53,398 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:18:53,399 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:18:53,400 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:18:53,401 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 [2020-09-24 18:18:53,428 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:18:53,428 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:18:53,429 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:18:53,429 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:18:53,430 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:18:53,430 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:18:53,430 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:18:53,430 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:18:53,431 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:18:53,431 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:18:53,431 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:18:53,431 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:18:53,431 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:18:53,432 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:18:53,432 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:18:53,432 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:18:53,432 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:18:53,432 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:18:53,433 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:18:53,433 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:18:53,433 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:18:53,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:18:53,433 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:18:53,434 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:18:53,434 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:18:53,434 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:18:53,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:18:53,434 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:18:53,435 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:18:53,435 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 -> SingleStatement 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=SMALLEST;log-additional-information=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=SMALLEST;log-additional-information=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=SMALLEST;log-additional-information=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=SMALLEST;log-additional-information=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=SMALLEST;log-additional-information=true; [2020-09-24 18:18:53,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:18:53,982 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:18:53,987 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:18:53,988 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:18:53,989 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:18:53,990 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2n_update_all_reverse.i [2020-09-24 18:18:54,084 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e163bf25/428fcd8624ba4169a68967baaa8600fa/FLAG956c726a2 [2020-09-24 18:18:54,724 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:18:54,724 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/sll2n_update_all_reverse.i [2020-09-24 18:18:54,742 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e163bf25/428fcd8624ba4169a68967baaa8600fa/FLAG956c726a2 [2020-09-24 18:18:54,983 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e163bf25/428fcd8624ba4169a68967baaa8600fa [2020-09-24 18:18:55,000 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:18:55,006 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:18:55,007 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:18:55,007 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:18:55,011 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:18:55,013 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:18:54" (1/1) ... [2020-09-24 18:18:55,017 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@391177e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:18:55, skipping insertion in model container [2020-09-24 18:18:55,018 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:18:54" (1/1) ... [2020-09-24 18:18:55,027 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:18:55,078 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:18:55,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:18:55,562 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:18:55,659 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:18:55,743 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:18:55,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:18:55 WrapperNode [2020-09-24 18:18:55,745 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:18:55,746 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:18:55,746 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:18:55,746 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:18:55,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:18:55" (1/1) ... [2020-09-24 18:18:55,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:18:55" (1/1) ... [2020-09-24 18:18:55,814 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:18:55" (1/1) ... [2020-09-24 18:18:55,815 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:18:55" (1/1) ... [2020-09-24 18:18:55,834 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:18:55" (1/1) ... [2020-09-24 18:18:55,841 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:18:55" (1/1) ... [2020-09-24 18:18:55,845 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:18:55" (1/1) ... [2020-09-24 18:18:55,853 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:18:55,853 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:18:55,853 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:18:55,853 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:18:55,855 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:18:55" (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 [2020-09-24 18:18:55,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:18:55,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:18:55,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-24 18:18:55,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-24 18:18:55,934 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-24 18:18:55,935 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-09-24 18:18:55,935 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-09-24 18:18:55,935 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-09-24 18:18:55,935 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_get_data_at [2020-09-24 18:18:55,935 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_update_at [2020-09-24 18:18:55,936 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:18:55,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:18:55,936 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-24 18:18:55,936 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-24 18:18:55,936 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-24 18:18:55,937 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-24 18:18:55,937 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-24 18:18:55,937 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-24 18:18:55,937 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-24 18:18:55,938 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-24 18:18:55,938 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-24 18:18:55,938 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-24 18:18:55,938 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-24 18:18:55,938 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-24 18:18:55,939 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-24 18:18:55,939 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-24 18:18:55,939 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-24 18:18:55,939 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-24 18:18:55,939 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-24 18:18:55,940 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-24 18:18:55,940 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-24 18:18:55,940 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-24 18:18:55,940 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-24 18:18:55,940 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-24 18:18:55,940 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-24 18:18:55,941 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-24 18:18:55,941 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-24 18:18:55,941 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-24 18:18:55,941 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-24 18:18:55,941 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-24 18:18:55,941 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-24 18:18:55,942 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-24 18:18:55,942 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-24 18:18:55,942 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-24 18:18:55,942 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-24 18:18:55,942 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-24 18:18:55,942 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-24 18:18:55,943 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-24 18:18:55,943 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-24 18:18:55,943 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-24 18:18:55,943 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-24 18:18:55,943 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-24 18:18:55,944 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-24 18:18:55,944 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-24 18:18:55,944 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-24 18:18:55,944 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-24 18:18:55,944 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-24 18:18:55,944 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-24 18:18:55,945 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-24 18:18:55,945 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-24 18:18:55,945 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-24 18:18:55,945 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-24 18:18:55,945 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-24 18:18:55,945 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-24 18:18:55,946 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 18:18:55,946 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 18:18:55,946 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-24 18:18:55,946 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 18:18:55,946 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-24 18:18:55,946 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-24 18:18:55,947 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-24 18:18:55,947 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-24 18:18:55,947 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-24 18:18:55,947 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 18:18:55,947 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-24 18:18:55,947 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-24 18:18:55,948 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-24 18:18:55,948 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:18:55,948 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-24 18:18:55,948 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-24 18:18:55,948 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-24 18:18:55,948 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-24 18:18:55,949 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-24 18:18:55,949 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-24 18:18:55,949 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-24 18:18:55,949 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-24 18:18:55,949 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-24 18:18:55,949 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-24 18:18:55,950 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-24 18:18:55,950 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-24 18:18:55,950 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-24 18:18:55,950 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-24 18:18:55,950 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-24 18:18:55,950 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-24 18:18:55,951 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-24 18:18:55,951 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-24 18:18:55,951 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-24 18:18:55,951 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-24 18:18:55,951 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-24 18:18:55,951 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-24 18:18:55,951 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-24 18:18:55,952 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-24 18:18:55,952 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-24 18:18:55,952 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-24 18:18:55,952 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-24 18:18:55,952 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-24 18:18:55,952 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-24 18:18:55,953 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-24 18:18:55,953 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-24 18:18:55,953 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-24 18:18:55,953 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-24 18:18:55,953 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-24 18:18:55,953 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-24 18:18:55,953 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-24 18:18:55,954 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-24 18:18:55,954 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-24 18:18:55,954 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-24 18:18:55,954 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-24 18:18:55,954 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-09-24 18:18:55,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 18:18:55,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 18:18:55,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 18:18:55,955 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-09-24 18:18:55,955 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-09-24 18:18:55,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 18:18:55,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 18:18:55,956 INFO L130 BoogieDeclarations]: Found specification of procedure sll_get_data_at [2020-09-24 18:18:55,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 18:18:55,956 INFO L130 BoogieDeclarations]: Found specification of procedure sll_update_at [2020-09-24 18:18:55,956 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:18:55,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:18:55,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:18:56,409 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-24 18:18:56,646 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:18:56,646 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-24 18:18:56,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:18:56 BoogieIcfgContainer [2020-09-24 18:18:56,659 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:18:56,664 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:18:56,665 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:18:56,668 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:18:56,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:18:54" (1/3) ... [2020-09-24 18:18:56,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77f58a1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:18:56, skipping insertion in model container [2020-09-24 18:18:56,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:18:55" (2/3) ... [2020-09-24 18:18:56,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77f58a1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:18:56, skipping insertion in model container [2020-09-24 18:18:56,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:18:56" (3/3) ... [2020-09-24 18:18:56,681 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_update_all_reverse.i [2020-09-24 18:18:56,694 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:18:56,707 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:18:56,729 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:18:56,757 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:18:56,757 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:18:56,757 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:18:56,757 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:18:56,757 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:18:56,757 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:18:56,757 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:18:56,758 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:18:56,784 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states. [2020-09-24 18:18:56,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-24 18:18:56,795 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:18:56,796 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:18:56,796 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:18:56,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:18:56,805 INFO L82 PathProgramCache]: Analyzing trace with hash 482514570, now seen corresponding path program 1 times [2020-09-24 18:18:56,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:18:56,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1687938969] [2020-09-24 18:18:56,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:18:56,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:18:56,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:57,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:57,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:57,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:57,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:18:57,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 18:18:57,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:18:57,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 927 [2020-09-24 18:18:57,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:18:57,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:18:57,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-24 18:18:57,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:18:57,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:18:57,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:18:57,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:18:57,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:57,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:18:57,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:18:57,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:18:57,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 18:18:57,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:18:57,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:18:57,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:18:57,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:18:57,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:18:58,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 18:18:58,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:18:58,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:58,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:58,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:18:58,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:18:58,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:18:58,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 18:18:58,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:18:58,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:18:58,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:18:58,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:18:58,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:18:58,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 18:18:58,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:18:58,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:58,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:18:58,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 18:18:58,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:18:58,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:18:58,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:18:58,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:18:58,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-24 18:18:58,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:18:58,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:18:58,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:18:58,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1687938969] [2020-09-24 18:18:58,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:18:58,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:18:58,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593894060] [2020-09-24 18:18:58,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:18:58,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:18:58,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:18:58,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:18:58,137 INFO L87 Difference]: Start difference. First operand 103 states. Second operand 4 states. [2020-09-24 18:18:58,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:18:58,748 INFO L93 Difference]: Finished difference Result 230 states and 285 transitions. [2020-09-24 18:18:58,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:18:58,752 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-09-24 18:18:58,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:18:58,780 INFO L225 Difference]: With dead ends: 230 [2020-09-24 18:18:58,781 INFO L226 Difference]: Without dead ends: 128 [2020-09-24 18:18:58,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:18:58,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-09-24 18:18:58,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 84. [2020-09-24 18:18:58,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-24 18:18:58,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2020-09-24 18:18:58,930 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 38 [2020-09-24 18:18:58,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:18:58,930 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2020-09-24 18:18:58,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:18:58,931 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2020-09-24 18:18:58,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-24 18:18:58,933 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:18:58,934 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:18:58,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:18:58,935 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:18:58,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:18:58,935 INFO L82 PathProgramCache]: Analyzing trace with hash -613399993, now seen corresponding path program 1 times [2020-09-24 18:18:58,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:18:58,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [767078138] [2020-09-24 18:18:58,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:18:58,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:18:58,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:59,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:59,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:59,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:59,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:00,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:00,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 18:19:00,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:19:00,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1571 [2020-09-24 18:19:00,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:00,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:19:00,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 18:19:00,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 18:19:00,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:00,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:19:00,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:00,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:00,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:00,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:19:00,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:00,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:19:00,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:00,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:00,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:00,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:00,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:19:00,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 18:19:00,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:00,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:00,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:00,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:00,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:19:00,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:19:00,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-24 18:19:00,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:00,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:19:00,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:00,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:19:00,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:19:00,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 18:19:00,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:00,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:00,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:00,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 18:19:00,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:00,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:19:00,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:00,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:00,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 18:19:00,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:00,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:00,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:19:00,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [767078138] [2020-09-24 18:19:00,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:19:00,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 18:19:00,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949029492] [2020-09-24 18:19:00,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:19:00,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:19:00,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:19:00,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:19:00,711 INFO L87 Difference]: Start difference. First operand 84 states and 88 transitions. Second operand 6 states. [2020-09-24 18:19:01,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:19:01,225 INFO L93 Difference]: Finished difference Result 171 states and 187 transitions. [2020-09-24 18:19:01,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:19:01,226 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-09-24 18:19:01,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:19:01,229 INFO L225 Difference]: With dead ends: 171 [2020-09-24 18:19:01,229 INFO L226 Difference]: Without dead ends: 144 [2020-09-24 18:19:01,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:19:01,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-09-24 18:19:01,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 85. [2020-09-24 18:19:01,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-24 18:19:01,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-09-24 18:19:01,245 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 38 [2020-09-24 18:19:01,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:19:01,245 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-09-24 18:19:01,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:19:01,246 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-09-24 18:19:01,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 18:19:01,248 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:19:01,248 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:19:01,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:19:01,248 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:19:01,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:19:01,249 INFO L82 PathProgramCache]: Analyzing trace with hash -841200203, now seen corresponding path program 1 times [2020-09-24 18:19:01,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:19:01,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348391675] [2020-09-24 18:19:01,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:19:01,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:01,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:01,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:01,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:01,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:02,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:02,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:06,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:06,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-24 18:19:06,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:19:06,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 18:19:06,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:06,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:19:06,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 18:19:06,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:19:06,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:19:06,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:19:06,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:06,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:06,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:06,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:19:06,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:06,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:19:06,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:06,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:06,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:06,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:06,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:06,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 18:19:06,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:06,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:06,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:06,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:19:06,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:06,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 18:19:06,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:06,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:19:06,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:19:06,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:19:06,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:19:06,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 18:19:06,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:06,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:06,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:06,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:19:06,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:06,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:19:06,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:06,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:06,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 18:19:06,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:06,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:19:06,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-24 18:19:06,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:06,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:06,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:06,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 18:19:06,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:06,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:19:06,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:06,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:06,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 18:19:06,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:06,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:19:06,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:19:06,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348391675] [2020-09-24 18:19:06,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:19:06,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 18:19:06,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749883950] [2020-09-24 18:19:06,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 18:19:06,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:19:06,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 18:19:06,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:19:06,472 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 8 states. [2020-09-24 18:19:06,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:19:06,950 INFO L93 Difference]: Finished difference Result 147 states and 156 transitions. [2020-09-24 18:19:06,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:19:06,951 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-09-24 18:19:06,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:19:06,952 INFO L225 Difference]: With dead ends: 147 [2020-09-24 18:19:06,952 INFO L226 Difference]: Without dead ends: 93 [2020-09-24 18:19:06,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:19:06,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-09-24 18:19:06,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 86. [2020-09-24 18:19:06,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-24 18:19:06,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 90 transitions. [2020-09-24 18:19:06,972 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 90 transitions. Word has length 51 [2020-09-24 18:19:06,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:19:06,973 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 90 transitions. [2020-09-24 18:19:06,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 18:19:06,973 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 90 transitions. [2020-09-24 18:19:06,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-24 18:19:06,978 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:19:06,978 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:19:06,979 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:19:06,980 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:19:06,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:19:06,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1957255427, now seen corresponding path program 1 times [2020-09-24 18:19:06,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:19:06,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1689858659] [2020-09-24 18:19:06,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:19:07,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:07,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:07,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:07,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:07,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:12,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:12,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-24 18:19:12,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:19:12,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 18:19:12,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:12,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:19:12,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 18:19:12,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-24 18:19:12,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:12,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:19:12,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:12,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:12,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:12,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:19:12,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:12,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:19:12,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:12,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:12,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:12,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:12,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:12,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 18:19:12,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:12,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:12,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:12,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:12,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 18:19:12,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:19:12,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-09-24 18:19:12,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:12,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:19:12,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:12,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 18:19:12,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:12,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:19:12,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:12,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:12,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:12,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:19:12,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:12,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:19:12,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:12,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:12,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:12,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:12,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:12,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-24 18:19:12,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:12,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:12,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:12,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:19:12,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:12,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 18:19:12,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:12,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:19:12,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-24 18:19:12,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:19:12,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:12,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-24 18:19:12,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:12,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:12,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:12,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 18:19:12,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:12,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:19:12,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:12,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:12,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 18:19:12,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:12,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:19:12,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:19:12,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1689858659] [2020-09-24 18:19:12,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:19:12,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 18:19:12,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977210410] [2020-09-24 18:19:12,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 18:19:12,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:19:12,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 18:19:12,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 18:19:12,418 INFO L87 Difference]: Start difference. First operand 86 states and 90 transitions. Second operand 9 states. [2020-09-24 18:19:12,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:19:12,887 INFO L93 Difference]: Finished difference Result 157 states and 169 transitions. [2020-09-24 18:19:12,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:19:12,888 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-09-24 18:19:12,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:19:12,889 INFO L225 Difference]: With dead ends: 157 [2020-09-24 18:19:12,889 INFO L226 Difference]: Without dead ends: 111 [2020-09-24 18:19:12,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-09-24 18:19:12,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-09-24 18:19:12,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 92. [2020-09-24 18:19:12,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-24 18:19:12,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 98 transitions. [2020-09-24 18:19:12,901 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 98 transitions. Word has length 69 [2020-09-24 18:19:12,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:19:12,902 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 98 transitions. [2020-09-24 18:19:12,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 18:19:12,902 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 98 transitions. [2020-09-24 18:19:12,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-24 18:19:12,905 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:19:12,905 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:19:12,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:19:12,905 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:19:12,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:19:12,906 INFO L82 PathProgramCache]: Analyzing trace with hash -899504983, now seen corresponding path program 1 times [2020-09-24 18:19:12,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:19:12,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859403426] [2020-09-24 18:19:12,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:19:12,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:12,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:12,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:13,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:13,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:13,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:13,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:17,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:18,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:18,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-24 18:19:18,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:19:18,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5221 [2020-09-24 18:19:18,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:18,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:19:18,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 18:19:18,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-24 18:19:18,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:18,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:19:18,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:18,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:18,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:18,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:19:18,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:18,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:19:18,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:18,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:18,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:18,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:18,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:18,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 18:19:18,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:18,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:18,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:18,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:18,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 18:19:18,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:19:18,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-09-24 18:19:18,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:18,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:19:18,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:18,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 18:19:18,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:18,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:19:18,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:18,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:18,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:18,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:19:18,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:18,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:19:18,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:18,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:18,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:18,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:18,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:18,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-24 18:19:18,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:18,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:18,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:18,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:19:18,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:18,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 18:19:18,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:18,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:19:18,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:18,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 18:19:18,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:19:18,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-24 18:19:18,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:18,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:18,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:18,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 18:19:18,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:18,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 18:19:18,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:18,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:19:18,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 18:19:18,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:19:18,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:19:18,606 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 18:19:18,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859403426] [2020-09-24 18:19:18,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:19:18,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 18:19:18,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792816629] [2020-09-24 18:19:18,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 18:19:18,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:19:18,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 18:19:18,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 18:19:18,609 INFO L87 Difference]: Start difference. First operand 92 states and 98 transitions. Second operand 9 states. [2020-09-24 18:19:19,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:19:19,172 INFO L93 Difference]: Finished difference Result 143 states and 154 transitions. [2020-09-24 18:19:19,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:19:19,176 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 76 [2020-09-24 18:19:19,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:19:19,179 INFO L225 Difference]: With dead ends: 143 [2020-09-24 18:19:19,180 INFO L226 Difference]: Without dead ends: 117 [2020-09-24 18:19:19,181 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-09-24 18:19:19,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-09-24 18:19:19,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 101. [2020-09-24 18:19:19,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-09-24 18:19:19,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 109 transitions. [2020-09-24 18:19:19,212 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 109 transitions. Word has length 76 [2020-09-24 18:19:19,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:19:19,214 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 109 transitions. [2020-09-24 18:19:19,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 18:19:19,215 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 109 transitions. [2020-09-24 18:19:19,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-24 18:19:19,222 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:19:19,222 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:19:19,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:19:19,225 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:19:19,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:19:19,225 INFO L82 PathProgramCache]: Analyzing trace with hash -585310979, now seen corresponding path program 1 times [2020-09-24 18:19:19,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:19:19,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [796458074] [2020-09-24 18:19:19,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:19:19,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:19,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:19,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:19,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:19,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:20,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:20,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:23,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:24,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:24,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-24 18:19:24,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:19:24,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-24 18:19:24,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:24,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:19:24,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 18:19:24,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-24 18:19:24,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:24,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:19:24,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:24,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:24,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:24,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:19:24,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:24,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:19:24,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:24,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:24,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:24,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:24,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:19:24,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 18:19:24,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:24,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:24,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:24,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:24,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 18:19:24,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:19:24,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-09-24 18:19:24,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:24,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:19:24,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:24,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 18:19:24,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:24,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:19:24,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:24,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:24,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:24,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:19:24,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:24,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 18:19:24,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:24,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:24,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:24,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:24,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:24,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-24 18:19:24,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:24,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:24,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:24,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:24,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:19:24,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:19:24,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-24 18:19:24,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:24,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:19:24,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:24,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 18:19:24,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:24,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-24 18:19:24,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:24,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:24,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:24,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 18:19:24,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:24,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:19:24,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:24,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:24,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 18:19:24,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:24,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:24,708 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 18:19:24,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [796458074] [2020-09-24 18:19:24,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:19:24,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 18:19:24,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151963425] [2020-09-24 18:19:24,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 18:19:24,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:19:24,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 18:19:24,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-24 18:19:24,712 INFO L87 Difference]: Start difference. First operand 101 states and 109 transitions. Second operand 9 states. [2020-09-24 18:19:25,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:19:25,128 INFO L93 Difference]: Finished difference Result 150 states and 163 transitions. [2020-09-24 18:19:25,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:19:25,129 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-09-24 18:19:25,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:19:25,130 INFO L225 Difference]: With dead ends: 150 [2020-09-24 18:19:25,130 INFO L226 Difference]: Without dead ends: 114 [2020-09-24 18:19:25,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-09-24 18:19:25,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-09-24 18:19:25,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 105. [2020-09-24 18:19:25,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-09-24 18:19:25,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 113 transitions. [2020-09-24 18:19:25,151 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 113 transitions. Word has length 83 [2020-09-24 18:19:25,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:19:25,152 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 113 transitions. [2020-09-24 18:19:25,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 18:19:25,152 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 113 transitions. [2020-09-24 18:19:25,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-09-24 18:19:25,154 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:19:25,157 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:19:25,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:19:25,157 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:19:25,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:19:25,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1758688301, now seen corresponding path program 2 times [2020-09-24 18:19:25,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:19:25,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [250755808] [2020-09-24 18:19:25,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:19:25,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:25,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:25,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:25,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:25,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:27,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:28,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:29,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:29,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:29,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:30,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:30,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-09-24 18:19:30,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 18:19:30,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-24 18:19:30,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:30,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:19:30,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 18:19:30,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 18:19:30,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:30,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:19:30,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:30,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:30,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:30,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:19:30,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:30,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:19:30,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:30,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:30,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:30,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:30,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:19:30,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 18:19:30,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:30,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:30,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:30,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 18:19:30,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:30,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-09-24 18:19:30,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:30,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:19:30,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:19:30,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 18:19:30,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:19:30,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:19:30,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:30,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:30,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:30,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:19:30,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:30,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 18:19:30,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:30,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:19:30,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:30,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 18:19:30,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:30,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-24 18:19:30,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:30,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:30,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:30,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:19:30,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:30,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:19:30,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:30,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:30,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 18:19:30,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:30,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:30,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-24 18:19:30,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:30,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:30,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:30,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:19:30,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:30,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:19:30,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:30,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:30,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 18:19:30,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:30,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:19:30,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-24 18:19:30,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:30,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:30,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:30,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 18:19:30,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:30,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:19:30,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:30,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:30,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 18:19:30,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:30,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:30,648 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-24 18:19:30,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [250755808] [2020-09-24 18:19:30,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:19:30,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 18:19:30,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440071235] [2020-09-24 18:19:30,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 18:19:30,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:19:30,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 18:19:30,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-24 18:19:30,652 INFO L87 Difference]: Start difference. First operand 105 states and 113 transitions. Second operand 10 states. [2020-09-24 18:19:31,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:19:31,075 INFO L93 Difference]: Finished difference Result 194 states and 212 transitions. [2020-09-24 18:19:31,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 18:19:31,076 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 96 [2020-09-24 18:19:31,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:19:31,077 INFO L225 Difference]: With dead ends: 194 [2020-09-24 18:19:31,077 INFO L226 Difference]: Without dead ends: 121 [2020-09-24 18:19:31,079 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-09-24 18:19:31,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-09-24 18:19:31,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 114. [2020-09-24 18:19:31,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-09-24 18:19:31,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 123 transitions. [2020-09-24 18:19:31,099 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 123 transitions. Word has length 96 [2020-09-24 18:19:31,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:19:31,099 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 123 transitions. [2020-09-24 18:19:31,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 18:19:31,100 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 123 transitions. [2020-09-24 18:19:31,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-09-24 18:19:31,103 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:19:31,104 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:19:31,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 18:19:31,104 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:19:31,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:19:31,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1090353339, now seen corresponding path program 3 times [2020-09-24 18:19:31,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:19:31,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104449831] [2020-09-24 18:19:31,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:19:31,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:31,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:33,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:33,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:33,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:35,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:35,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:36,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:36,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-24 18:19:36,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:19:36,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 18:19:36,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:36,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-09-24 18:19:36,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-24 18:19:36,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-24 18:19:36,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:19:36,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:19:36,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:36,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:36,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:36,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:19:36,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:36,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:19:36,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:36,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:36,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:36,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:36,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:36,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 18:19:36,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:36,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:37,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:37,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 18:19:37,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:37,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 611 [2020-09-24 18:19:37,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:37,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 18:19:37,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:37,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 18:19:37,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:37,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 18:19:37,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:37,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:37,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:37,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:19:37,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:37,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-24 18:19:37,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:37,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:19:37,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:37,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 18:19:37,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:37,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 18:19:37,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:37,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:37,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:37,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:19:37,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:37,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-24 18:19:37,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:37,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 18:19:37,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:19:37,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 18:19:37,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:37,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-24 18:19:37,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:37,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:38,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:38,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:19:38,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:38,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-09-24 18:19:38,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:38,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 18:19:38,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:19:38,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 18:19:38,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0