/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --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/dll2n_remove_all.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:28:14,403 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:28:14,407 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:28:14,435 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:28:14,435 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:28:14,437 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:28:14,438 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:28:14,440 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:28:14,442 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:28:14,444 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:28:14,445 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:28:14,446 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:28:14,446 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:28:14,447 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:28:14,449 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:28:14,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:28:14,451 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:28:14,452 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:28:14,454 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:28:14,456 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:28:14,458 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:28:14,459 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:28:14,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:28:14,462 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:28:14,464 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:28:14,465 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:28:14,465 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:28:14,466 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:28:14,467 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:28:14,468 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:28:14,468 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:28:14,469 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:28:14,470 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:28:14,471 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:28:14,473 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:28:14,473 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:28:14,474 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:28:14,474 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:28:14,474 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:28:14,476 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:28:14,476 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:28:14,477 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 [2020-09-25 13:28:14,506 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:28:14,506 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:28:14,508 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:28:14,508 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:28:14,508 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:28:14,509 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:28:14,509 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:28:14,509 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:28:14,509 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:28:14,509 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:28:14,510 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:28:14,510 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:28:14,510 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:28:14,510 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:28:14,510 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:28:14,511 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:28:14,511 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:28:14,511 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:28:14,511 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:28:14,512 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:28:14,512 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:28:14,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:28:14,512 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:28:14,512 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:28:14,513 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:28:14,513 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:28:14,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:28:14,513 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:28:14,513 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:28:14,514 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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:28:15,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:28:15,038 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:28:15,046 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:28:15,048 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:28:15,049 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:28:15,050 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2n_remove_all.i [2020-09-25 13:28:15,151 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a98b37ff5/1ac325e3b3a74b61a04897c81b24bb17/FLAG4ce662b56 [2020-09-25 13:28:15,805 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:28:15,806 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/dll2n_remove_all.i [2020-09-25 13:28:15,822 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a98b37ff5/1ac325e3b3a74b61a04897c81b24bb17/FLAG4ce662b56 [2020-09-25 13:28:16,067 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a98b37ff5/1ac325e3b3a74b61a04897c81b24bb17 [2020-09-25 13:28:16,082 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:28:16,087 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:28:16,088 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:28:16,089 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:28:16,095 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:28:16,096 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:28:16" (1/1) ... [2020-09-25 13:28:16,101 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fc1a58f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:16, skipping insertion in model container [2020-09-25 13:28:16,101 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:28:16" (1/1) ... [2020-09-25 13:28:16,111 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:28:16,166 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:28:16,658 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:28:16,672 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:28:16,739 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:28:16,802 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:28:16,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:16 WrapperNode [2020-09-25 13:28:16,803 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:28:16,804 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:28:16,804 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:28:16,804 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:28:16,823 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:16" (1/1) ... [2020-09-25 13:28:16,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:16" (1/1) ... [2020-09-25 13:28:16,844 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:16" (1/1) ... [2020-09-25 13:28:16,844 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:16" (1/1) ... [2020-09-25 13:28:16,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:16" (1/1) ... [2020-09-25 13:28:16,868 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:16" (1/1) ... [2020-09-25 13:28:16,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:16" (1/1) ... [2020-09-25 13:28:16,879 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:28:16,880 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:28:16,880 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:28:16,880 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:28:16,882 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:16" (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 [2020-09-25 13:28:16,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:28:16,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:28:16,964 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 13:28:16,964 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 13:28:16,964 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 13:28:16,964 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-09-25 13:28:16,964 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2020-09-25 13:28:16,964 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_remove_first [2020-09-25 13:28:16,965 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:28:16,965 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:28:16,965 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 13:28:16,965 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 13:28:16,965 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 13:28:16,966 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 13:28:16,966 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 13:28:16,966 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 13:28:16,966 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 13:28:16,966 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 13:28:16,966 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 13:28:16,967 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 13:28:16,967 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 13:28:16,967 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 13:28:16,967 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 13:28:16,967 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 13:28:16,968 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 13:28:16,968 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 13:28:16,968 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 13:28:16,968 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 13:28:16,968 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 13:28:16,969 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 13:28:16,969 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 13:28:16,969 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 13:28:16,969 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 13:28:16,969 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 13:28:16,969 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 13:28:16,970 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 13:28:16,970 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 13:28:16,970 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 13:28:16,970 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 13:28:16,970 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 13:28:16,970 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 13:28:16,970 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 13:28:16,971 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 13:28:16,971 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 13:28:16,971 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 13:28:16,971 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 13:28:16,971 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 13:28:16,971 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 13:28:16,971 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 13:28:16,971 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 13:28:16,972 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 13:28:16,972 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 13:28:16,972 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 13:28:16,972 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 13:28:16,972 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 13:28:16,972 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 13:28:16,972 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 13:28:16,972 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 13:28:16,973 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 13:28:16,973 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 13:28:16,973 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 13:28:16,973 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 13:28:16,973 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 13:28:16,973 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 13:28:16,973 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 13:28:16,973 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 13:28:16,974 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 13:28:16,974 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 13:28:16,974 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 13:28:16,974 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 13:28:16,974 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 13:28:16,974 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 13:28:16,975 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 13:28:16,975 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 13:28:16,975 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 13:28:16,975 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:28:16,975 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 13:28:16,975 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 13:28:16,975 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 13:28:16,976 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 13:28:16,976 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 13:28:16,976 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 13:28:16,976 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 13:28:16,976 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 13:28:16,976 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 13:28:16,976 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 13:28:16,977 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 13:28:16,977 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 13:28:16,977 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 13:28:16,977 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 13:28:16,977 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 13:28:16,977 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 13:28:16,978 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 13:28:16,978 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 13:28:16,978 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 13:28:16,978 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 13:28:16,978 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 13:28:16,978 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 13:28:16,978 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 13:28:16,979 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 13:28:16,979 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 13:28:16,979 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 13:28:16,979 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 13:28:16,979 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 13:28:16,979 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 13:28:16,979 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 13:28:16,980 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 13:28:16,980 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 13:28:16,980 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 13:28:16,980 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 13:28:16,980 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 13:28:16,980 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 13:28:16,980 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 13:28:16,981 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 13:28:16,981 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 13:28:16,981 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 13:28:16,981 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-09-25 13:28:16,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 13:28:16,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 13:28:16,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 13:28:16,982 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2020-09-25 13:28:16,982 INFO L130 BoogieDeclarations]: Found specification of procedure dll_remove_first [2020-09-25 13:28:16,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 13:28:16,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 13:28:16,982 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:28:16,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 13:28:16,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-25 13:28:16,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:28:16,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:28:16,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 13:28:17,355 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 13:28:17,576 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:28:17,577 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 13:28:17,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:28:17 BoogieIcfgContainer [2020-09-25 13:28:17,582 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:28:17,584 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:28:17,584 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:28:17,588 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:28:17,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:28:16" (1/3) ... [2020-09-25 13:28:17,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66a82532 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:28:17, skipping insertion in model container [2020-09-25 13:28:17,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:16" (2/3) ... [2020-09-25 13:28:17,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66a82532 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:28:17, skipping insertion in model container [2020-09-25 13:28:17,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:28:17" (3/3) ... [2020-09-25 13:28:17,592 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2n_remove_all.i [2020-09-25 13:28:17,604 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:28:17,615 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:28:17,635 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:28:17,663 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:28:17,663 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:28:17,663 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:28:17,663 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:28:17,663 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:28:17,663 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:28:17,664 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:28:17,664 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:28:17,689 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2020-09-25 13:28:17,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 13:28:17,698 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:17,700 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] [2020-09-25 13:28:17,700 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:17,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:17,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1728925643, now seen corresponding path program 1 times [2020-09-25 13:28:17,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:17,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2070240092] [2020-09-25 13:28:17,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:17,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:17,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:18,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:18,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:18,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:18,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 13:28:18,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:28:18,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 724 [2020-09-25 13:28:18,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:18,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:18,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:28:18,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:28:18,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 13:28:18,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:28:18,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:18,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:18,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:18,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:18,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:18,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:18,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:28:18,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:18,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:18,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:18,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:18,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:18,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:18,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:28:18,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:18,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:18,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:18,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:28:18,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:18,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 13:28:18,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:18,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:18,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:28:18,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:28:18,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:28:18,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:18,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:28:18,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2070240092] [2020-09-25 13:28:18,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:28:18,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:28:18,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813141218] [2020-09-25 13:28:18,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:28:18,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:18,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:28:18,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:28:18,852 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 7 states. [2020-09-25 13:28:19,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:19,323 INFO L93 Difference]: Finished difference Result 129 states and 143 transitions. [2020-09-25 13:28:19,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 13:28:19,325 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-25 13:28:19,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:19,339 INFO L225 Difference]: With dead ends: 129 [2020-09-25 13:28:19,339 INFO L226 Difference]: Without dead ends: 72 [2020-09-25 13:28:19,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:28:19,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-25 13:28:19,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 59. [2020-09-25 13:28:19,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-25 13:28:19,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2020-09-25 13:28:19,403 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 27 [2020-09-25 13:28:19,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:19,403 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2020-09-25 13:28:19,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:28:19,404 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2020-09-25 13:28:19,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-25 13:28:19,405 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:19,405 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] [2020-09-25 13:28:19,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:28:19,406 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:19,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:19,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1632096868, now seen corresponding path program 1 times [2020-09-25 13:28:19,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:19,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1914876421] [2020-09-25 13:28:19,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:19,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:19,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:19,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:19,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:20,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:20,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 13:28:20,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:28:20,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 851 [2020-09-25 13:28:20,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:20,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:20,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:28:20,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:28:20,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 13:28:20,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:20,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:20,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:20,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:20,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:20,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:20,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:20,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:28:20,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:20,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:20,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:20,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:20,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:20,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:20,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:28:20,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:20,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:20,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:20,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:20,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:28:20,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:28:20,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-09-25 13:28:20,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:20,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:20,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:28:20,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:20,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 13:28:20,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:20,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:28:20,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1914876421] [2020-09-25 13:28:20,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:28:20,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 13:28:20,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72319345] [2020-09-25 13:28:20,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:28:20,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:20,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:28:20,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:28:20,544 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand 6 states. [2020-09-25 13:28:20,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:20,771 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2020-09-25 13:28:20,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 13:28:20,772 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2020-09-25 13:28:20,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:20,776 INFO L225 Difference]: With dead ends: 71 [2020-09-25 13:28:20,776 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 13:28:20,780 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:28:20,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 13:28:20,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 60. [2020-09-25 13:28:20,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-25 13:28:20,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2020-09-25 13:28:20,820 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 39 [2020-09-25 13:28:20,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:20,820 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2020-09-25 13:28:20,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:28:20,821 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2020-09-25 13:28:20,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-25 13:28:20,823 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:20,823 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] [2020-09-25 13:28:20,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:28:20,824 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:20,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:20,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1675692718, now seen corresponding path program 1 times [2020-09-25 13:28:20,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:20,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [332394852] [2020-09-25 13:28:20,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:20,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:20,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:21,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:21,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:21,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:21,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:25,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:25,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 13:28:25,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:28:25,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:28:25,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:25,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:25,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:28:25,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:28:25,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 13:28:25,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:25,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:25,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:25,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:25,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:25,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:25,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:25,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:28:25,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:25,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:25,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:25,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:25,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:25,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:25,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:28:26,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:26,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:26,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:26,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:26,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:28:26,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:28:26,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-09-25 13:28:26,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:26,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:26,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:28:26,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:26,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 13:28:26,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:26,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 13:28:26,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:26,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:26,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:26,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 13:28:26,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:26,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 13:28:26,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:26,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:26,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:28:26,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:26,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 13:28:26,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:26,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:28:26,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [332394852] [2020-09-25 13:28:26,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:28:26,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 13:28:26,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005993574] [2020-09-25 13:28:26,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:28:26,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:26,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:28:26,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:28:26,307 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand 9 states. [2020-09-25 13:28:26,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:26,720 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2020-09-25 13:28:26,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 13:28:26,721 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-09-25 13:28:26,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:26,724 INFO L225 Difference]: With dead ends: 73 [2020-09-25 13:28:26,724 INFO L226 Difference]: Without dead ends: 68 [2020-09-25 13:28:26,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-09-25 13:28:26,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-25 13:28:26,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 65. [2020-09-25 13:28:26,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-25 13:28:26,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-09-25 13:28:26,753 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 57 [2020-09-25 13:28:26,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:26,754 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-09-25 13:28:26,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:28:26,754 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-09-25 13:28:26,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-25 13:28:26,765 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:26,766 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 13:28:26,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:28:26,767 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:26,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:26,767 INFO L82 PathProgramCache]: Analyzing trace with hash -182223992, now seen corresponding path program 2 times [2020-09-25 13:28:26,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:26,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [343832296] [2020-09-25 13:28:26,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:26,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:26,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:26,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:27,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:27,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:27,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:28,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:31,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:31,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 13:28:31,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:28:31,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 13:28:31,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:31,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:31,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:28:31,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 13:28:31,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 13:28:31,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:31,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:31,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:31,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:31,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:31,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:31,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:31,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:28:31,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:31,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:31,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:31,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:31,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:31,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:28:31,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:28:31,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:31,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:32,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:32,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:28:32,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:32,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-09-25 13:28:32,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:32,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:32,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:28:32,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:32,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 13:28:32,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:32,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 13:28:32,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:32,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:32,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:32,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 13:28:32,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:32,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 13:28:32,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:32,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:32,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:28:32,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:32,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 13:28:32,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:32,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 13:28:32,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:32,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:32,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:32,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 13:28:32,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:32,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:28:32,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:32,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:32,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:32,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 13:28:32,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:32,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:32,282 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-25 13:28:32,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [343832296] [2020-09-25 13:28:32,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:28:32,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 13:28:32,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656415305] [2020-09-25 13:28:32,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 13:28:32,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:32,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 13:28:32,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:28:32,288 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 13 states. [2020-09-25 13:28:32,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:32,745 INFO L93 Difference]: Finished difference Result 128 states and 137 transitions. [2020-09-25 13:28:32,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 13:28:32,746 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 75 [2020-09-25 13:28:32,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:32,749 INFO L225 Difference]: With dead ends: 128 [2020-09-25 13:28:32,752 INFO L226 Difference]: Without dead ends: 91 [2020-09-25 13:28:32,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2020-09-25 13:28:32,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-09-25 13:28:32,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 78. [2020-09-25 13:28:32,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-25 13:28:32,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 83 transitions. [2020-09-25 13:28:32,771 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 83 transitions. Word has length 75 [2020-09-25 13:28:32,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:32,773 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 83 transitions. [2020-09-25 13:28:32,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 13:28:32,774 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 83 transitions. [2020-09-25 13:28:32,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 13:28:32,776 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:32,776 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:28:32,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:28:32,776 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:32,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:32,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1955081336, now seen corresponding path program 3 times [2020-09-25 13:28:32,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:32,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1943279400] [2020-09-25 13:28:32,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:32,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:32,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:32,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:33,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:33,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:34,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:35,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:35,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:37,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:37,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 13:28:37,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:28:37,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 13:28:37,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:37,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:37,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:28:37,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 13:28:37,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 13:28:37,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:37,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:37,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:37,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:37,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:37,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:37,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:37,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:28:37,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:37,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:37,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:37,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:37,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:37,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 13:28:38,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:28:38,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:38,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:38,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:38,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:38,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:38,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 13:28:38,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:28:38,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-09-25 13:28:38,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:38,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:38,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:28:38,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 13:28:38,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 13:28:38,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:38,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 13:28:38,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:38,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:38,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:38,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 13:28:38,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:38,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-25 13:28:38,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:38,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:38,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:28:38,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:38,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 13:28:38,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:38,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 13:28:38,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:38,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:38,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:38,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:38,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 13:28:38,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:28:38,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-09-25 13:28:38,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:38,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:38,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:28:38,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:38,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 13:28:38,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:38,870 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-25 13:28:38,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1943279400] [2020-09-25 13:28:38,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:28:38,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 13:28:38,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192410631] [2020-09-25 13:28:38,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 13:28:38,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:38,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 13:28:38,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:28:38,874 INFO L87 Difference]: Start difference. First operand 78 states and 83 transitions. Second operand 12 states. [2020-09-25 13:28:39,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:39,708 INFO L93 Difference]: Finished difference Result 162 states and 176 transitions. [2020-09-25 13:28:39,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 13:28:39,709 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 87 [2020-09-25 13:28:39,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:39,714 INFO L225 Difference]: With dead ends: 162 [2020-09-25 13:28:39,714 INFO L226 Difference]: Without dead ends: 110 [2020-09-25 13:28:39,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2020-09-25 13:28:39,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-09-25 13:28:39,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 84. [2020-09-25 13:28:39,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-25 13:28:39,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 89 transitions. [2020-09-25 13:28:39,744 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 89 transitions. Word has length 87 [2020-09-25 13:28:39,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:39,744 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 89 transitions. [2020-09-25 13:28:39,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 13:28:39,744 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 89 transitions. [2020-09-25 13:28:39,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-25 13:28:39,746 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:39,746 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:28:39,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:28:39,746 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:39,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:39,747 INFO L82 PathProgramCache]: Analyzing trace with hash 131916194, now seen corresponding path program 1 times [2020-09-25 13:28:39,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:39,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316426132] [2020-09-25 13:28:39,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:39,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:39,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:40,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:40,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:40,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:42,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:44,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:45,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:45,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-09-25 13:28:45,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:28:45,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5898 [2020-09-25 13:28:45,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:45,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:45,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 13:28:45,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-25 13:28:45,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 13:28:45,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:45,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:45,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:45,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:45,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:45,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:45,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:45,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:28:45,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:45,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:45,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:45,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:45,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:45,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:45,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:28:45,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:45,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:46,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:46,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:46,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:46,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:50,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:50,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 13:28:50,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:28:50,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4257 [2020-09-25 13:28:50,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:50,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:50,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:28:50,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:50,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 13:28:50,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:50,325 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 38 [2020-09-25 13:28:50,556 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 45 [2020-09-25 13:28:50,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 13:28:50,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:50,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:50,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:50,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 13:28:50,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:50,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-25 13:28:50,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:50,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:50,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:28:50,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:28:50,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 13:28:50,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:51,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 13:28:51,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:51,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:51,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:51,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 13:28:51,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:51,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:28:51,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:51,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:51,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:51,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 13:28:51,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:51,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:51,081 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 13:28:51,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [316426132] [2020-09-25 13:28:51,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:28:51,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 13:28:51,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530163705] [2020-09-25 13:28:51,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 13:28:51,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:51,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 13:28:51,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2020-09-25 13:28:51,084 INFO L87 Difference]: Start difference. First operand 84 states and 89 transitions. Second operand 18 states. [2020-09-25 13:28:51,488 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 35 [2020-09-25 13:28:51,854 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 48 [2020-09-25 13:28:52,166 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2020-09-25 13:28:53,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:53,249 INFO L93 Difference]: Finished difference Result 127 states and 133 transitions. [2020-09-25 13:28:53,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-25 13:28:53,249 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 89 [2020-09-25 13:28:53,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:53,251 INFO L225 Difference]: With dead ends: 127 [2020-09-25 13:28:53,251 INFO L226 Difference]: Without dead ends: 93 [2020-09-25 13:28:53,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=172, Invalid=1088, Unknown=0, NotChecked=0, Total=1260 [2020-09-25 13:28:53,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-09-25 13:28:53,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 84. [2020-09-25 13:28:53,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-25 13:28:53,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2020-09-25 13:28:53,261 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 89 [2020-09-25 13:28:53,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:53,262 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2020-09-25 13:28:53,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-25 13:28:53,262 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2020-09-25 13:28:53,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-25 13:28:53,263 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:53,263 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:28:53,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 13:28:53,264 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:53,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:53,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1167974453, now seen corresponding path program 1 times [2020-09-25 13:28:53,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:53,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1451884790] [2020-09-25 13:28:53,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:53,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:53,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:55,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:56,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:58,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:58,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:58,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-09-25 13:28:58,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:28:58,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5132 [2020-09-25 13:28:58,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:58,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:58,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-09-25 13:28:58,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 13:28:58,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 13:28:58,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:58,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:58,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:58,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:58,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:58,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:58,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:58,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:28:58,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:58,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:58,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:58,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:58,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:58,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:58,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:28:58,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:58,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:59,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:00,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:00,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 13:29:00,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:29:00,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1625 [2020-09-25 13:29:00,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:00,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:00,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 13:29:00,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:00,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 13:29:00,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0