/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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-simple/sll2n_update_all_reverse.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:07:52,953 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:07:52,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:07:53,006 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:07:53,007 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:07:53,018 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:07:53,020 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:07:53,024 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:07:53,026 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:07:53,027 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:07:53,029 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:07:53,032 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:07:53,032 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:07:53,034 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:07:53,037 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:07:53,040 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:07:53,042 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:07:53,046 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:07:53,048 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:07:53,053 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:07:53,057 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:07:53,059 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:07:53,060 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:07:53,061 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:07:53,068 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:07:53,068 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:07:53,069 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:07:53,072 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:07:53,072 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:07:53,074 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:07:53,074 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:07:53,075 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:07:53,076 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:07:53,077 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:07:53,079 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:07:53,079 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:07:53,080 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:07:53,080 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:07:53,080 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:07:53,083 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:07:53,084 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:07:53,085 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 02:07:53,136 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:07:53,136 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:07:53,139 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:07:53,139 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:07:53,139 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:07:53,139 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:07:53,140 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:07:53,140 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:07:53,140 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:07:53,141 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:07:53,142 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:07:53,142 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:07:53,142 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:07:53,143 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:07:53,143 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:07:53,143 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:07:53,143 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:07:53,144 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:07:53,144 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:07:53,144 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:07:53,144 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:07:53,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:07:53,145 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:07:53,145 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:07:53,145 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:07:53,145 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:07:53,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:07:53,146 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:07:53,146 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:07:53,146 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true; [2020-09-25 02:07:53,587 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:07:53,605 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:07:53,610 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:07:53,612 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:07:53,612 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:07:53,614 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2n_update_all_reverse.i [2020-09-25 02:07:53,712 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/81e244e5a/55f2995b08a649c0af9b8eaf0287f4b8/FLAG4cfbcb642 [2020-09-25 02:07:54,343 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:07:54,344 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/sll2n_update_all_reverse.i [2020-09-25 02:07:54,372 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/81e244e5a/55f2995b08a649c0af9b8eaf0287f4b8/FLAG4cfbcb642 [2020-09-25 02:07:54,592 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/81e244e5a/55f2995b08a649c0af9b8eaf0287f4b8 [2020-09-25 02:07:54,605 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:07:54,610 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:07:54,617 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:07:54,617 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:07:54,621 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:07:54,622 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:07:54" (1/1) ... [2020-09-25 02:07:54,626 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b8ae939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:54, skipping insertion in model container [2020-09-25 02:07:54,626 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:07:54" (1/1) ... [2020-09-25 02:07:54,634 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:07:54,689 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:07:55,195 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:07:55,208 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:07:55,281 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:07:55,341 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:07:55,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:55 WrapperNode [2020-09-25 02:07:55,342 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:07:55,343 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:07:55,343 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:07:55,343 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:07:55,362 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:55" (1/1) ... [2020-09-25 02:07:55,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:55" (1/1) ... [2020-09-25 02:07:55,383 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:55" (1/1) ... [2020-09-25 02:07:55,384 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:55" (1/1) ... [2020-09-25 02:07:55,402 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:55" (1/1) ... [2020-09-25 02:07:55,410 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:55" (1/1) ... [2020-09-25 02:07:55,414 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:55" (1/1) ... [2020-09-25 02:07:55,421 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:07:55,422 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:07:55,422 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:07:55,422 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:07:55,423 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:55" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:07:55,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:07:55,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:07:55,502 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 02:07:55,502 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 02:07:55,502 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 02:07:55,502 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-09-25 02:07:55,502 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-09-25 02:07:55,503 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-09-25 02:07:55,503 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_get_data_at [2020-09-25 02:07:55,503 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_update_at [2020-09-25 02:07:55,503 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:07:55,504 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:07:55,504 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 02:07:55,504 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 02:07:55,504 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 02:07:55,504 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 02:07:55,505 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 02:07:55,505 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 02:07:55,505 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 02:07:55,506 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 02:07:55,506 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 02:07:55,506 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 02:07:55,506 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 02:07:55,506 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 02:07:55,506 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 02:07:55,507 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 02:07:55,507 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 02:07:55,507 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 02:07:55,507 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 02:07:55,507 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 02:07:55,508 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 02:07:55,508 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 02:07:55,508 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 02:07:55,508 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 02:07:55,508 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 02:07:55,508 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 02:07:55,509 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 02:07:55,509 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 02:07:55,509 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 02:07:55,509 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 02:07:55,509 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 02:07:55,510 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 02:07:55,510 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 02:07:55,510 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 02:07:55,510 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 02:07:55,510 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 02:07:55,510 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 02:07:55,511 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 02:07:55,511 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 02:07:55,511 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 02:07:55,511 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 02:07:55,511 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 02:07:55,511 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 02:07:55,512 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 02:07:55,512 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 02:07:55,512 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 02:07:55,512 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 02:07:55,512 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 02:07:55,512 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 02:07:55,513 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 02:07:55,513 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 02:07:55,513 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 02:07:55,513 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 02:07:55,513 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 02:07:55,514 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 02:07:55,514 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 02:07:55,514 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 02:07:55,514 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 02:07:55,514 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 02:07:55,514 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 02:07:55,515 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 02:07:55,515 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 02:07:55,515 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 02:07:55,515 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 02:07:55,515 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 02:07:55,515 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 02:07:55,516 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 02:07:55,516 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 02:07:55,516 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 02:07:55,516 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 02:07:55,516 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 02:07:55,516 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 02:07:55,517 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 02:07:55,517 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 02:07:55,517 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 02:07:55,517 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 02:07:55,517 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 02:07:55,517 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 02:07:55,518 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 02:07:55,518 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 02:07:55,518 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 02:07:55,518 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 02:07:55,518 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 02:07:55,518 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 02:07:55,518 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 02:07:55,519 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 02:07:55,519 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 02:07:55,519 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 02:07:55,519 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 02:07:55,519 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 02:07:55,519 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 02:07:55,520 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 02:07:55,520 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 02:07:55,520 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 02:07:55,520 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 02:07:55,520 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 02:07:55,520 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 02:07:55,520 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 02:07:55,521 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 02:07:55,521 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 02:07:55,521 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 02:07:55,521 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 02:07:55,521 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 02:07:55,521 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 02:07:55,522 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 02:07:55,522 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 02:07:55,522 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 02:07:55,522 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 02:07:55,522 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-09-25 02:07:55,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 02:07:55,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 02:07:55,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 02:07:55,523 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-09-25 02:07:55,523 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-09-25 02:07:55,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 02:07:55,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 02:07:55,524 INFO L130 BoogieDeclarations]: Found specification of procedure sll_get_data_at [2020-09-25 02:07:55,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 02:07:55,524 INFO L130 BoogieDeclarations]: Found specification of procedure sll_update_at [2020-09-25 02:07:55,524 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:07:55,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:07:55,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:07:55,950 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 02:07:56,104 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:07:56,105 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-25 02:07:56,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:07:56 BoogieIcfgContainer [2020-09-25 02:07:56,115 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:07:56,118 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:07:56,118 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:07:56,123 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:07:56,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:07:54" (1/3) ... [2020-09-25 02:07:56,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2366b6b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:07:56, skipping insertion in model container [2020-09-25 02:07:56,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:55" (2/3) ... [2020-09-25 02:07:56,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2366b6b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:07:56, skipping insertion in model container [2020-09-25 02:07:56,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:07:56" (3/3) ... [2020-09-25 02:07:56,137 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_update_all_reverse.i [2020-09-25 02:07:56,149 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:07:56,161 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:07:56,187 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:07:56,226 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:07:56,226 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:07:56,226 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:07:56,227 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:07:56,227 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:07:56,227 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:07:56,227 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:07:56,227 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:07:56,256 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states. [2020-09-25 02:07:56,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 02:07:56,268 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:07:56,270 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:07:56,270 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:07:56,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:07:56,279 INFO L82 PathProgramCache]: Analyzing trace with hash 482514570, now seen corresponding path program 1 times [2020-09-25 02:07:56,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:07:56,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1872217114] [2020-09-25 02:07:56,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:07:56,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:56,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:56,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:56,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:56,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:57,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:57,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 02:07:57,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:07:57,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 842 [2020-09-25 02:07:57,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:57,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:57,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 02:07:57,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:57,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 02:07:57,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:07:57,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:57,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:57,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:57,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:07:57,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:57,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 02:07:57,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:57,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:57,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:07:57,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:57,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:07:57,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 02:07:57,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:57,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:57,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:57,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:57,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:07:57,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:07:57,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 02:07:57,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:57,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:57,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:07:57,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:57,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:07:57,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 02:07:57,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:57,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:57,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:57,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 02:07:57,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:57,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 02:07:57,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:57,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:57,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 02:07:57,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:57,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:07:57,460 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 02:07:57,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1872217114] [2020-09-25 02:07:57,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:07:57,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 02:07:57,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626055929] [2020-09-25 02:07:57,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 02:07:57,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:07:57,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 02:07:57,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 02:07:57,498 INFO L87 Difference]: Start difference. First operand 103 states. Second operand 4 states. [2020-09-25 02:07:57,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:07:57,887 INFO L93 Difference]: Finished difference Result 230 states and 285 transitions. [2020-09-25 02:07:57,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 02:07:57,889 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-09-25 02:07:57,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:07:57,905 INFO L225 Difference]: With dead ends: 230 [2020-09-25 02:07:57,905 INFO L226 Difference]: Without dead ends: 128 [2020-09-25 02:07:57,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:07:57,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-09-25 02:07:57,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 84. [2020-09-25 02:07:57,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-25 02:07:57,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2020-09-25 02:07:57,980 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 38 [2020-09-25 02:07:57,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:07:57,981 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2020-09-25 02:07:57,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 02:07:57,981 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2020-09-25 02:07:57,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 02:07:57,983 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:07:57,983 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:07:57,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:07:57,984 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:07:57,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:07:57,985 INFO L82 PathProgramCache]: Analyzing trace with hash -613399993, now seen corresponding path program 1 times [2020-09-25 02:07:57,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:07:57,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [826428644] [2020-09-25 02:07:57,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:07:58,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:58,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:58,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:58,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:58,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:58,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:59,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:59,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 02:07:59,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 02:07:59,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1508 [2020-09-25 02:07:59,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:59,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:07:59,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 02:07:59,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 02:07:59,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:07:59,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:07:59,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:59,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:59,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:59,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:07:59,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:59,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:07:59,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:59,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:59,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:07:59,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:59,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:07:59,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 02:07:59,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:59,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:59,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:59,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:07:59,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:59,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:07:59,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:59,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:59,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:07:59,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:59,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:07:59,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 02:07:59,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:59,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:59,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:59,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 02:07:59,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:59,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 02:07:59,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:59,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:59,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:07:59,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:59,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:07:59,645 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 02:07:59,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [826428644] [2020-09-25 02:07:59,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:07:59,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 02:07:59,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579255475] [2020-09-25 02:07:59,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 02:07:59,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:07:59,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 02:07:59,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:07:59,650 INFO L87 Difference]: Start difference. First operand 84 states and 88 transitions. Second operand 7 states. [2020-09-25 02:08:00,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:08:00,252 INFO L93 Difference]: Finished difference Result 174 states and 190 transitions. [2020-09-25 02:08:00,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 02:08:00,252 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-09-25 02:08:00,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:08:00,255 INFO L225 Difference]: With dead ends: 174 [2020-09-25 02:08:00,255 INFO L226 Difference]: Without dead ends: 144 [2020-09-25 02:08:00,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-09-25 02:08:00,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-09-25 02:08:00,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 85. [2020-09-25 02:08:00,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-25 02:08:00,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-09-25 02:08:00,270 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 38 [2020-09-25 02:08:00,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:08:00,270 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-09-25 02:08:00,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 02:08:00,270 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-09-25 02:08:00,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 02:08:00,272 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:08:00,272 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:08:00,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:08:00,273 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:08:00,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:08:00,273 INFO L82 PathProgramCache]: Analyzing trace with hash -841200203, now seen corresponding path program 1 times [2020-09-25 02:08:00,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:08:00,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [352177680] [2020-09-25 02:08:00,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:08:00,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:00,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:00,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:00,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:00,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:01,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:01,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:05,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:05,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 02:08:05,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 02:08:05,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 02:08:05,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:05,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:08:05,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 02:08:05,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:08:05,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:08:05,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:08:05,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:05,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:05,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:05,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:08:05,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:05,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:08:05,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:05,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:08:05,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:08:05,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:08:05,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:05,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 02:08:05,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:05,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:05,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:05,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:08:05,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:05,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 02:08:05,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:05,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:08:05,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:08:05,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:08:05,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:05,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 02:08:05,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:05,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:05,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:05,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:08:05,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:05,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 02:08:05,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:05,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:08:05,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 02:08:05,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:08:05,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:05,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-25 02:08:05,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:05,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:05,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:05,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 02:08:05,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:05,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:08:05,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:05,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:08:05,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:08:05,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:08:05,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:08:05,489 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 02:08:05,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [352177680] [2020-09-25 02:08:05,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:08:05,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 02:08:05,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891862436] [2020-09-25 02:08:05,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 02:08:05,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:08:05,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 02:08:05,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:08:05,492 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 8 states. [2020-09-25 02:08:05,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:08:05,887 INFO L93 Difference]: Finished difference Result 147 states and 156 transitions. [2020-09-25 02:08:05,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 02:08:05,888 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-09-25 02:08:05,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:08:05,889 INFO L225 Difference]: With dead ends: 147 [2020-09-25 02:08:05,890 INFO L226 Difference]: Without dead ends: 93 [2020-09-25 02:08:05,891 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-09-25 02:08:05,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-09-25 02:08:05,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 86. [2020-09-25 02:08:05,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-25 02:08:05,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 90 transitions. [2020-09-25 02:08:05,900 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 90 transitions. Word has length 51 [2020-09-25 02:08:05,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:08:05,900 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 90 transitions. [2020-09-25 02:08:05,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 02:08:05,900 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 90 transitions. [2020-09-25 02:08:05,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 02:08:05,902 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:08:05,902 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:08:05,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:08:05,903 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:08:05,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:08:05,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1957255427, now seen corresponding path program 1 times [2020-09-25 02:08:05,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:08:05,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [219644397] [2020-09-25 02:08:05,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:08:05,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:05,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:05,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:06,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:06,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:10,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:10,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-25 02:08:10,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:08:10,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 02:08:10,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:10,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:08:10,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 02:08:10,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 02:08:10,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:10,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:08:10,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:10,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:10,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:10,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:08:10,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:10,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:08:10,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:10,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:08:10,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:08:10,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:08:10,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:11,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 02:08:11,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:11,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:11,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:11,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:08:11,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:11,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-09-25 02:08:11,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:11,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:08:11,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:08:11,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 02:08:11,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:11,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 02:08:11,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:11,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:11,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:11,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:08:11,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:11,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 02:08:11,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:11,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:08:11,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:08:11,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 02:08:11,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:11,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-25 02:08:11,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:11,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:11,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:11,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:08:11,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:11,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 02:08:11,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:11,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:08:11,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 02:08:11,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:08:11,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:11,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 02:08:11,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:11,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:11,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:11,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 02:08:11,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:11,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:08:11,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:11,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:08:11,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:08:11,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:08:11,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:11,321 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 02:08:11,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [219644397] [2020-09-25 02:08:11,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:08:11,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 02:08:11,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067178644] [2020-09-25 02:08:11,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 02:08:11,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:08:11,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 02:08:11,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 02:08:11,326 INFO L87 Difference]: Start difference. First operand 86 states and 90 transitions. Second operand 10 states. [2020-09-25 02:08:11,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:08:11,722 INFO L93 Difference]: Finished difference Result 156 states and 166 transitions. [2020-09-25 02:08:11,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 02:08:11,723 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 69 [2020-09-25 02:08:11,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:08:11,725 INFO L225 Difference]: With dead ends: 156 [2020-09-25 02:08:11,725 INFO L226 Difference]: Without dead ends: 102 [2020-09-25 02:08:11,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-09-25 02:08:11,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-09-25 02:08:11,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 95. [2020-09-25 02:08:11,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-09-25 02:08:11,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 100 transitions. [2020-09-25 02:08:11,734 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 100 transitions. Word has length 69 [2020-09-25 02:08:11,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:08:11,735 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 100 transitions. [2020-09-25 02:08:11,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 02:08:11,735 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 100 transitions. [2020-09-25 02:08:11,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 02:08:11,738 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:08:11,738 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:08:11,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 02:08:11,738 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:08:11,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:08:11,739 INFO L82 PathProgramCache]: Analyzing trace with hash -564957999, now seen corresponding path program 2 times [2020-09-25 02:08:11,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:08:11,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1763132338] [2020-09-25 02:08:11,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:08:11,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:11,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:11,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:11,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:12,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:13,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:13,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:14,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:16,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:16,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 02:08:16,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 02:08:16,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 02:08:16,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:16,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 02:08:16,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-25 02:08:16,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 02:08:16,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:16,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:08:16,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:16,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:16,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:16,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:08:16,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:16,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 02:08:16,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:16,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:08:16,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:08:16,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:08:16,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:16,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 02:08:16,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:16,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:16,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:16,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 02:08:16,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:16,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 02:08:16,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:16,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:08:16,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:08:16,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:08:16,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:17,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 02:08:17,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:17,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:17,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:17,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:08:17,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:17,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 02:08:17,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:17,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:08:17,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:08:17,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:08:17,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:17,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 02:08:17,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:17,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:17,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:17,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:08:17,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:17,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 02:08:17,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:17,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:08:17,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:08:17,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:08:17,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:17,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-25 02:08:17,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:17,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:17,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:17,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:08:17,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:17,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 02:08:17,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:17,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:08:17,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:08:17,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 02:08:17,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:17,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-25 02:08:17,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:17,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:17,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:17,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 02:08:17,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:17,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 02:08:17,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:17,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:08:17,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:08:17,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 02:08:17,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:17,306 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 02:08:17,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1763132338] [2020-09-25 02:08:17,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:08:17,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 02:08:17,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530527510] [2020-09-25 02:08:17,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 02:08:17,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:08:17,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 02:08:17,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-09-25 02:08:17,310 INFO L87 Difference]: Start difference. First operand 95 states and 100 transitions. Second operand 17 states. [2020-09-25 02:08:18,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:08:18,637 INFO L93 Difference]: Finished difference Result 189 states and 212 transitions. [2020-09-25 02:08:18,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 02:08:18,638 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 87 [2020-09-25 02:08:18,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:08:18,640 INFO L225 Difference]: With dead ends: 189 [2020-09-25 02:08:18,640 INFO L226 Difference]: Without dead ends: 186 [2020-09-25 02:08:18,641 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=170, Invalid=1020, Unknown=0, NotChecked=0, Total=1190 [2020-09-25 02:08:18,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-09-25 02:08:18,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 117. [2020-09-25 02:08:18,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-09-25 02:08:18,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 129 transitions. [2020-09-25 02:08:18,656 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 129 transitions. Word has length 87 [2020-09-25 02:08:18,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:08:18,657 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 129 transitions. [2020-09-25 02:08:18,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 02:08:18,657 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 129 transitions. [2020-09-25 02:08:18,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-09-25 02:08:18,659 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:08:18,659 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:08:18,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 02:08:18,659 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:08:18,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:08:18,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1586882603, now seen corresponding path program 1 times [2020-09-25 02:08:18,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:08:18,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1516274575] [2020-09-25 02:08:18,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:08:18,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:18,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:18,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:18,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:19,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:20,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:20,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:22,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:23,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:23,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 02:08:23,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 02:08:23,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5197 [2020-09-25 02:08:23,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:23,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:08:23,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-25 02:08:23,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 02:08:23,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:08:23,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:08:23,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:23,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:23,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:23,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:08:23,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:23,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:08:23,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:23,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:08:23,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:08:23,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:08:23,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 02:08:24,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 02:08:24,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:24,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:24,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:24,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 02:08:24,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:24,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 02:08:24,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:24,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:08:24,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:08:24,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:08:24,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:08:24,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 02:08:24,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:24,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:24,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:24,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:08:24,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:24,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:08:24,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:24,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:08:24,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:08:24,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:08:24,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:08:24,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 02:08:24,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:24,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:24,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:24,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:08:24,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:24,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 02:08:24,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:24,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:08:24,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:08:24,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:08:24,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:08:24,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-25 02:08:24,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:24,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:24,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:24,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:08:24,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:24,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 02:08:24,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:24,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:08:24,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:08:24,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:08:24,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:08:24,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-25 02:08:24,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:24,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:24,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:24,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 02:08:24,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:24,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 02:08:24,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:24,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:08:24,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 02:08:24,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 02:08:24,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:08:24,326 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 02:08:24,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1516274575] [2020-09-25 02:08:24,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:08:24,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 02:08:24,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857025165] [2020-09-25 02:08:24,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 02:08:24,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:08:24,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 02:08:24,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-25 02:08:24,331 INFO L87 Difference]: Start difference. First operand 117 states and 129 transitions. Second operand 12 states. [2020-09-25 02:08:25,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:08:25,105 INFO L93 Difference]: Finished difference Result 197 states and 220 transitions. [2020-09-25 02:08:25,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 02:08:25,105 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 94 [2020-09-25 02:08:25,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:08:25,107 INFO L225 Difference]: With dead ends: 197 [2020-09-25 02:08:25,108 INFO L226 Difference]: Without dead ends: 165 [2020-09-25 02:08:25,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2020-09-25 02:08:25,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-09-25 02:08:25,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 125. [2020-09-25 02:08:25,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-09-25 02:08:25,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 138 transitions. [2020-09-25 02:08:25,121 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 138 transitions. Word has length 94 [2020-09-25 02:08:25,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:08:25,121 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 138 transitions. [2020-09-25 02:08:25,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 02:08:25,122 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 138 transitions. [2020-09-25 02:08:25,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-09-25 02:08:25,123 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:08:25,123 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:08:25,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 02:08:25,124 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:08:25,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:08:25,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1526680859, now seen corresponding path program 1 times [2020-09-25 02:08:25,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:08:25,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924104416] [2020-09-25 02:08:25,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:08:25,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:25,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:25,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:25,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:27,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:27,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:27,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:28,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:29,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:29,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:30,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:30,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 02:08:30,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 02:08:30,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5329 [2020-09-25 02:08:30,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:30,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:08:30,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-25 02:08:30,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 02:08:30,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:30,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:08:30,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:30,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:30,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:30,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:08:30,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:30,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:08:30,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:30,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:08:30,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:08:30,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:08:30,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:30,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 02:08:30,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:30,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:30,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:30,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 02:08:30,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:30,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 02:08:30,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:30,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:08:30,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:08:30,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:08:30,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:30,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 02:08:30,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:30,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:30,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:30,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:08:30,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:30,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 02:08:30,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:30,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:08:30,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:08:30,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:08:30,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:30,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 02:08:30,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:30,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:30,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:30,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:08:30,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:30,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 02:08:30,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:30,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:08:30,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:08:30,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:08:30,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:30,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-25 02:08:30,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:30,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:30,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:30,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 02:08:30,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:30,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 02:08:30,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:30,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:08:30,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:08:30,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 02:08:30,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:30,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-25 02:08:30,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:30,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:30,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:30,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 02:08:30,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:30,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:08:30,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:30,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:08:30,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:08:30,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:08:30,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:30,798 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 02:08:30,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924104416] [2020-09-25 02:08:30,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:08:30,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 02:08:30,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162289489] [2020-09-25 02:08:30,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 02:08:30,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:08:30,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 02:08:30,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 02:08:30,801 INFO L87 Difference]: Start difference. First operand 125 states and 138 transitions. Second operand 10 states. [2020-09-25 02:08:31,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:08:31,401 INFO L93 Difference]: Finished difference Result 167 states and 183 transitions. [2020-09-25 02:08:31,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 02:08:31,405 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2020-09-25 02:08:31,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:08:31,409 INFO L225 Difference]: With dead ends: 167 [2020-09-25 02:08:31,409 INFO L226 Difference]: Without dead ends: 130 [2020-09-25 02:08:31,413 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2020-09-25 02:08:31,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-09-25 02:08:31,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 121. [2020-09-25 02:08:31,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-09-25 02:08:31,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 132 transitions. [2020-09-25 02:08:31,436 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 132 transitions. Word has length 94 [2020-09-25 02:08:31,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:08:31,436 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 132 transitions. [2020-09-25 02:08:31,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 02:08:31,436 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 132 transitions. [2020-09-25 02:08:31,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-09-25 02:08:31,437 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:08:31,438 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:08:31,441 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 02:08:31,441 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:08:31,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:08:31,442 INFO L82 PathProgramCache]: Analyzing trace with hash -126086293, now seen corresponding path program 3 times [2020-09-25 02:08:31,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:08:31,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263056285] [2020-09-25 02:08:31,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:08:31,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:31,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:31,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:31,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:32,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:32,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:33,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:35,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:36,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:36,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:36,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-25 02:08:36,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 02:08:36,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 02:08:36,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:36,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:08:36,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-25 02:08:36,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 02:08:36,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:36,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:08:36,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:36,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:36,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:36,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:08:36,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:36,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:08:36,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:36,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:08:36,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:08:36,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:08:36,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:36,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 02:08:36,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:36,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:36,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:36,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 02:08:36,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:36,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 02:08:36,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:36,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:08:36,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:08:36,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:08:36,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:36,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 02:08:36,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:36,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:36,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:36,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:08:36,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:36,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 02:08:36,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:36,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:08:36,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:08:36,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:08:36,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:36,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 02:08:36,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:36,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:36,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:36,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:08:36,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:36,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 02:08:36,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:36,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:08:36,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:08:36,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:08:36,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:36,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-25 02:08:36,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:36,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:36,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:36,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:08:36,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:36,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 02:08:36,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:36,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:08:36,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:08:36,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 02:08:36,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:36,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-09-25 02:08:36,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:36,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:36,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:36,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:08:36,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:36,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:08:36,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:36,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:08:36,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 02:08:36,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:08:36,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:36,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 02:08:36,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:36,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:36,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:36,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 02:08:36,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:36,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:08:36,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:36,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:08:36,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:08:36,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:08:36,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:36,767 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-09-25 02:08:36,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [263056285] [2020-09-25 02:08:36,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:08:36,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 02:08:36,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908731820] [2020-09-25 02:08:36,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 02:08:36,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:08:36,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 02:08:36,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 02:08:36,769 INFO L87 Difference]: Start difference. First operand 121 states and 132 transitions. Second operand 10 states. [2020-09-25 02:08:37,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:08:37,304 INFO L93 Difference]: Finished difference Result 186 states and 202 transitions. [2020-09-25 02:08:37,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 02:08:37,306 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 100 [2020-09-25 02:08:37,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:08:37,311 INFO L225 Difference]: With dead ends: 186 [2020-09-25 02:08:37,311 INFO L226 Difference]: Without dead ends: 126 [2020-09-25 02:08:37,312 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2020-09-25 02:08:37,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-09-25 02:08:37,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 121. [2020-09-25 02:08:37,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-09-25 02:08:37,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 130 transitions. [2020-09-25 02:08:37,332 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 130 transitions. Word has length 100 [2020-09-25 02:08:37,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:08:37,334 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 130 transitions. [2020-09-25 02:08:37,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 02:08:37,334 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 130 transitions. [2020-09-25 02:08:37,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-09-25 02:08:37,336 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:08:37,336 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:08:37,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 02:08:37,337 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:08:37,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:08:37,338 INFO L82 PathProgramCache]: Analyzing trace with hash 47675112, now seen corresponding path program 1 times [2020-09-25 02:08:37,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:08:37,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [92005810] [2020-09-25 02:08:37,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:08:37,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:37,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:37,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:37,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:37,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:38,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:39,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking...