/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --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 14:36:00,569 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:36:00,574 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:36:00,624 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:36:00,624 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:36:00,635 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:36:00,637 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:36:00,641 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:36:00,644 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:36:00,646 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:36:00,648 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:36:00,650 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:36:00,650 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:36:00,655 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:36:00,657 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:36:00,658 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:36:00,661 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:36:00,662 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:36:00,664 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:36:00,671 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:36:00,674 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:36:00,676 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:36:00,678 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:36:00,678 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:36:00,683 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:36:00,684 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:36:00,684 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:36:00,687 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:36:00,688 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:36:00,689 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:36:00,690 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:36:00,691 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:36:00,691 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:36:00,692 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:36:00,694 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:36:00,694 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:36:00,695 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:36:00,695 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:36:00,696 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:36:00,697 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:36:00,699 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:36:00,700 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 14:36:00,752 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:36:00,752 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:36:00,755 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:36:00,755 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:36:00,755 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:36:00,755 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:36:00,756 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:36:00,756 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:36:00,756 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:36:00,756 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:36:00,758 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:36:00,758 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:36:00,758 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:36:00,758 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:36:00,759 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:36:00,759 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:36:00,759 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:36:00,759 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:36:00,759 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:36:00,760 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:36:00,760 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:36:00,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:36:00,760 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:36:00,761 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:36:00,761 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:36:00,761 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:36:00,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:36:00,761 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:36:00,761 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:36:00,762 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:36:01,204 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:36:01,230 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:36:01,235 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:36:01,236 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:36:01,237 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:36:01,238 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2n_update_all_reverse.i [2020-09-25 14:36:01,330 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/64b343cfc/edd83d11af2744dea2aff9867212e580/FLAGfe802ae0b [2020-09-25 14:36:01,995 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:36:01,996 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/sll2n_update_all_reverse.i [2020-09-25 14:36:02,019 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/64b343cfc/edd83d11af2744dea2aff9867212e580/FLAGfe802ae0b [2020-09-25 14:36:02,257 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/64b343cfc/edd83d11af2744dea2aff9867212e580 [2020-09-25 14:36:02,271 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:36:02,279 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:36:02,281 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:36:02,281 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:36:02,285 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:36:02,286 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:36:02" (1/1) ... [2020-09-25 14:36:02,291 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b4a88a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:02, skipping insertion in model container [2020-09-25 14:36:02,291 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:36:02" (1/1) ... [2020-09-25 14:36:02,301 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:36:02,351 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:36:02,951 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:36:02,969 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:36:03,017 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:36:03,081 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:36:03,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:03 WrapperNode [2020-09-25 14:36:03,082 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:36:03,083 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:36:03,083 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:36:03,083 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:36:03,101 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:03" (1/1) ... [2020-09-25 14:36:03,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:03" (1/1) ... [2020-09-25 14:36:03,121 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:03" (1/1) ... [2020-09-25 14:36:03,122 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:03" (1/1) ... [2020-09-25 14:36:03,141 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:03" (1/1) ... [2020-09-25 14:36:03,151 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:03" (1/1) ... [2020-09-25 14:36:03,155 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:03" (1/1) ... [2020-09-25 14:36:03,162 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:36:03,163 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:36:03,163 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:36:03,164 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:36:03,165 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:03" (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 14:36:03,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:36:03,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:36:03,250 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 14:36:03,250 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 14:36:03,250 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 14:36:03,250 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-09-25 14:36:03,250 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-09-25 14:36:03,251 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-09-25 14:36:03,251 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_get_data_at [2020-09-25 14:36:03,251 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_update_at [2020-09-25 14:36:03,251 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:36:03,251 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:36:03,252 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 14:36:03,252 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 14:36:03,252 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 14:36:03,253 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 14:36:03,253 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 14:36:03,253 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 14:36:03,254 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 14:36:03,254 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 14:36:03,254 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 14:36:03,255 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 14:36:03,255 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 14:36:03,255 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 14:36:03,255 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 14:36:03,256 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 14:36:03,256 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 14:36:03,256 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 14:36:03,257 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 14:36:03,257 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 14:36:03,257 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 14:36:03,257 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 14:36:03,257 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 14:36:03,257 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 14:36:03,257 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 14:36:03,258 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 14:36:03,258 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 14:36:03,258 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 14:36:03,259 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 14:36:03,259 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 14:36:03,259 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 14:36:03,259 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 14:36:03,259 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 14:36:03,259 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 14:36:03,260 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 14:36:03,260 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 14:36:03,260 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 14:36:03,260 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 14:36:03,260 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 14:36:03,261 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 14:36:03,261 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 14:36:03,261 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 14:36:03,261 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 14:36:03,262 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 14:36:03,262 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 14:36:03,262 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 14:36:03,262 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 14:36:03,262 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 14:36:03,262 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 14:36:03,263 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 14:36:03,263 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 14:36:03,263 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 14:36:03,263 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 14:36:03,263 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 14:36:03,263 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 14:36:03,264 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 14:36:03,264 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 14:36:03,265 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 14:36:03,265 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 14:36:03,266 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 14:36:03,266 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 14:36:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 14:36:03,268 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 14:36:03,268 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 14:36:03,268 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 14:36:03,268 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 14:36:03,268 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 14:36:03,268 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:36:03,269 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 14:36:03,269 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 14:36:03,269 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 14:36:03,269 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 14:36:03,270 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 14:36:03,270 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 14:36:03,270 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 14:36:03,270 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 14:36:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 14:36:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 14:36:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 14:36:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 14:36:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 14:36:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 14:36:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 14:36:03,272 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 14:36:03,272 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 14:36:03,272 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 14:36:03,272 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 14:36:03,272 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 14:36:03,272 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 14:36:03,272 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 14:36:03,273 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 14:36:03,273 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 14:36:03,273 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 14:36:03,273 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 14:36:03,273 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 14:36:03,274 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 14:36:03,274 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 14:36:03,274 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 14:36:03,274 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 14:36:03,274 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 14:36:03,274 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 14:36:03,275 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 14:36:03,275 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 14:36:03,275 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 14:36:03,275 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 14:36:03,275 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 14:36:03,276 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 14:36:03,276 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 14:36:03,277 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-09-25 14:36:03,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 14:36:03,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 14:36:03,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 14:36:03,278 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-09-25 14:36:03,278 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-09-25 14:36:03,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 14:36:03,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 14:36:03,280 INFO L130 BoogieDeclarations]: Found specification of procedure sll_get_data_at [2020-09-25 14:36:03,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 14:36:03,283 INFO L130 BoogieDeclarations]: Found specification of procedure sll_update_at [2020-09-25 14:36:03,284 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:36:03,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:36:03,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:36:03,728 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 14:36:03,903 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:36:03,903 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-25 14:36:03,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:36:03 BoogieIcfgContainer [2020-09-25 14:36:03,912 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:36:03,915 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:36:03,916 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:36:03,920 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:36:03,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:36:02" (1/3) ... [2020-09-25 14:36:03,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e790e07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:36:03, skipping insertion in model container [2020-09-25 14:36:03,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:03" (2/3) ... [2020-09-25 14:36:03,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e790e07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:36:03, skipping insertion in model container [2020-09-25 14:36:03,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:36:03" (3/3) ... [2020-09-25 14:36:03,933 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_update_all_reverse.i [2020-09-25 14:36:03,947 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:36:03,958 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:36:03,982 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:36:04,015 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:36:04,015 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:36:04,015 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:36:04,015 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:36:04,015 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:36:04,015 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:36:04,016 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:36:04,016 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:36:04,040 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states. [2020-09-25 14:36:04,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 14:36:04,051 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:04,052 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 14:36:04,053 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:04,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:04,059 INFO L82 PathProgramCache]: Analyzing trace with hash 482514570, now seen corresponding path program 1 times [2020-09-25 14:36:04,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:04,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285945756] [2020-09-25 14:36:04,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:04,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:04,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:04,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:04,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:04,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:05,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:05,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 14:36:05,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:36:05,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 819 [2020-09-25 14:36:05,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:05,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:05,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:36:05,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 14:36:05,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 14:36:05,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:36:05,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:05,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:05,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:05,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:05,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:36:05,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:05,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:36:05,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:05,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:05,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:05,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:05,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:05,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:05,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 14:36:05,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:05,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:05,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:05,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:05,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 14:36:05,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:36:05,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 14:36:05,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:05,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:05,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:36:05,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:05,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:36:05,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:05,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 14:36:05,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:05,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:05,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:05,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:05,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 14:36:05,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:36:05,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 14:36:05,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:05,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:05,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:05,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 14:36:05,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:05,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:05,287 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 14:36:05,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [285945756] [2020-09-25 14:36:05,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:36:05,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 14:36:05,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777754032] [2020-09-25 14:36:05,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 14:36:05,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:05,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 14:36:05,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:36:05,317 INFO L87 Difference]: Start difference. First operand 103 states. Second operand 6 states. [2020-09-25 14:36:05,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:36:05,989 INFO L93 Difference]: Finished difference Result 242 states and 303 transitions. [2020-09-25 14:36:05,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:36:05,991 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-09-25 14:36:05,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:36:06,008 INFO L225 Difference]: With dead ends: 242 [2020-09-25 14:36:06,008 INFO L226 Difference]: Without dead ends: 144 [2020-09-25 14:36:06,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:36:06,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-09-25 14:36:06,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 85. [2020-09-25 14:36:06,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-25 14:36:06,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-09-25 14:36:06,095 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 38 [2020-09-25 14:36:06,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:36:06,096 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-09-25 14:36:06,096 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 14:36:06,096 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-09-25 14:36:06,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 14:36:06,100 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:06,100 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 14:36:06,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:36:06,104 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:06,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:06,105 INFO L82 PathProgramCache]: Analyzing trace with hash -841200203, now seen corresponding path program 1 times [2020-09-25 14:36:06,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:06,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1674625706] [2020-09-25 14:36:06,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:06,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:06,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:06,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:06,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:06,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:07,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:07,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:11,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:11,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 14:36:11,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:36:11,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 14:36:11,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:11,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:11,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:36:11,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 14:36:11,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 14:36:11,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:11,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:11,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:11,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:11,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:11,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:36:11,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:11,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:36:11,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:11,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:11,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:11,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:11,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:11,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:11,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 14:36:11,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:11,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:11,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:11,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:11,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 14:36:11,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:36:11,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 14:36:11,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:11,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:11,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:36:11,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:11,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:36:11,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:11,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 14:36:11,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:11,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:11,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:11,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:11,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 14:36:11,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:36:11,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 14:36:11,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:11,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:11,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:36:11,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:11,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:36:11,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:11,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-25 14:36:11,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:11,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:11,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:11,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 14:36:11,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:11,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:36:11,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:11,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:11,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:11,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:36:11,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:11,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:11,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:36:11,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1674625706] [2020-09-25 14:36:11,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:36:11,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 14:36:11,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493450745] [2020-09-25 14:36:11,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:36:11,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:11,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:36:11,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:36:11,491 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 9 states. [2020-09-25 14:36:12,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:36:12,224 INFO L93 Difference]: Finished difference Result 175 states and 191 transitions. [2020-09-25 14:36:12,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 14:36:12,225 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-09-25 14:36:12,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:36:12,227 INFO L225 Difference]: With dead ends: 175 [2020-09-25 14:36:12,227 INFO L226 Difference]: Without dead ends: 148 [2020-09-25 14:36:12,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-09-25 14:36:12,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-09-25 14:36:12,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 91. [2020-09-25 14:36:12,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-09-25 14:36:12,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 96 transitions. [2020-09-25 14:36:12,243 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 96 transitions. Word has length 51 [2020-09-25 14:36:12,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:36:12,243 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 96 transitions. [2020-09-25 14:36:12,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:36:12,244 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 96 transitions. [2020-09-25 14:36:12,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-25 14:36:12,247 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:12,247 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:36:12,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:36:12,248 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:12,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:12,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1075395321, now seen corresponding path program 2 times [2020-09-25 14:36:12,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:12,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1236771575] [2020-09-25 14:36:12,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:12,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:12,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:12,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:12,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:12,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:13,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:13,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:13,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:13,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:17,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:17,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 14:36:17,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:36:17,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 14:36:17,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:17,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:17,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:36:17,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 14:36:17,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 14:36:17,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:36:17,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:17,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:17,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:17,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:17,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:36:17,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:17,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:36:17,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:17,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:17,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:17,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:17,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:17,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:17,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 14:36:17,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:17,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:17,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:17,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 14:36:17,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:17,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 14:36:17,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:17,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:17,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:36:17,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:17,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 14:36:17,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:36:17,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 14:36:17,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:17,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:17,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:17,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 14:36:17,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:17,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 14:36:17,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:17,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:17,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:36:17,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:17,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:36:17,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:17,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 14:36:17,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:17,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:17,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:17,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 14:36:17,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:17,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 14:36:17,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:17,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:17,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:36:17,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:17,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:36:17,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:17,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 14:36:17,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:17,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:17,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:17,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 14:36:17,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:17,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:36:17,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:17,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:17,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:17,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:36:17,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:17,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:17,589 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-25 14:36:17,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1236771575] [2020-09-25 14:36:17,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:36:17,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 14:36:17,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184807625] [2020-09-25 14:36:17,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:36:17,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:17,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:36:17,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:36:17,593 INFO L87 Difference]: Start difference. First operand 91 states and 96 transitions. Second operand 9 states. [2020-09-25 14:36:18,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:36:18,058 INFO L93 Difference]: Finished difference Result 159 states and 170 transitions. [2020-09-25 14:36:18,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:36:18,058 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-09-25 14:36:18,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:36:18,060 INFO L225 Difference]: With dead ends: 159 [2020-09-25 14:36:18,060 INFO L226 Difference]: Without dead ends: 99 [2020-09-25 14:36:18,061 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-09-25 14:36:18,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-09-25 14:36:18,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 92. [2020-09-25 14:36:18,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-25 14:36:18,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 97 transitions. [2020-09-25 14:36:18,081 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 97 transitions. Word has length 64 [2020-09-25 14:36:18,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:36:18,081 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 97 transitions. [2020-09-25 14:36:18,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:36:18,081 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 97 transitions. [2020-09-25 14:36:18,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-25 14:36:18,088 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:18,088 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:36:18,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:36:18,094 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:18,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:18,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1485371271, now seen corresponding path program 1 times [2020-09-25 14:36:18,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:18,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545146823] [2020-09-25 14:36:18,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:18,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:18,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:18,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:18,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:18,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:20,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:20,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:23,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:23,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-09-25 14:36:23,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:36:23,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 14:36:23,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:23,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:23,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:36:23,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 14:36:23,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 14:36:23,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:23,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:23,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:23,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:23,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:23,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:36:23,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:23,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:36:23,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:23,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:23,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:23,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:23,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:23,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:36:23,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 14:36:23,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:23,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:23,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:23,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:23,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 14:36:23,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:36:23,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-09-25 14:36:23,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:23,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:23,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:36:23,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:23,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 14:36:23,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:23,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 14:36:23,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:23,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:23,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:23,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:36:23,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:23,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:36:23,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:23,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:23,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:23,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:23,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:23,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:23,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-25 14:36:23,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:23,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:23,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:23,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 14:36:23,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:23,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 14:36:23,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:23,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:23,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:36:23,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 14:36:23,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:36:23,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:23,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 14:36:23,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:23,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:23,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:23,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 14:36:23,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:23,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 14:36:23,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:23,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:23,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:23,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 14:36:23,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:23,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:23,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-25 14:36:23,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:23,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:23,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:23,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 14:36:23,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:23,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:36:23,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:23,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:23,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:23,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:36:23,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:23,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:23,581 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 14:36:23,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545146823] [2020-09-25 14:36:23,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:36:23,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 14:36:23,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986532824] [2020-09-25 14:36:23,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:36:23,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:23,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:36:23,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:36:23,584 INFO L87 Difference]: Start difference. First operand 92 states and 97 transitions. Second operand 9 states. [2020-09-25 14:36:24,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:36:24,138 INFO L93 Difference]: Finished difference Result 163 states and 175 transitions. [2020-09-25 14:36:24,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:36:24,138 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-09-25 14:36:24,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:36:24,140 INFO L225 Difference]: With dead ends: 163 [2020-09-25 14:36:24,140 INFO L226 Difference]: Without dead ends: 113 [2020-09-25 14:36:24,142 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-09-25 14:36:24,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-09-25 14:36:24,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 96. [2020-09-25 14:36:24,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-09-25 14:36:24,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 102 transitions. [2020-09-25 14:36:24,153 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 102 transitions. Word has length 82 [2020-09-25 14:36:24,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:36:24,154 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 102 transitions. [2020-09-25 14:36:24,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:36:24,154 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 102 transitions. [2020-09-25 14:36:24,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-25 14:36:24,156 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:24,156 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:36:24,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:36:24,157 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:24,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:24,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1774167405, now seen corresponding path program 1 times [2020-09-25 14:36:24,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:24,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1682003452] [2020-09-25 14:36:24,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:24,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:24,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:24,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:24,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:25,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:25,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:25,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:27,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:27,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:27,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:28,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:28,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:29,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:29,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-25 14:36:29,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 14:36:29,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 14:36:29,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:29,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:29,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:36:29,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 14:36:29,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 14:36:29,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:36:29,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:29,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:29,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:29,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:29,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:36:29,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:29,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:36:29,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:29,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:29,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:29,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:29,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:29,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:36:29,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 14:36:29,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:29,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:29,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:29,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:29,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 14:36:29,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:36:29,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-09-25 14:36:29,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:29,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:29,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:36:29,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:29,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 14:36:29,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:29,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 14:36:29,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:29,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:29,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:29,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:36:29,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:29,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:36:29,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:29,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:29,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:29,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:29,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:29,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:29,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-25 14:36:29,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:29,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:29,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:29,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 14:36:29,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:29,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 14:36:29,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:29,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:29,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:36:29,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:29,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 14:36:29,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:29,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-25 14:36:29,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:29,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:29,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:29,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 14:36:29,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:29,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:36:29,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:29,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:29,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:36:29,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:29,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:36:29,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:29,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-25 14:36:29,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:29,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:29,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:29,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 14:36:29,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:29,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 14:36:29,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:29,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:29,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:36:29,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 14:36:29,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:36:29,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:29,647 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-25 14:36:29,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1682003452] [2020-09-25 14:36:29,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:36:29,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 14:36:29,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876147371] [2020-09-25 14:36:29,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:36:29,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:29,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:36:29,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:36:29,652 INFO L87 Difference]: Start difference. First operand 96 states and 102 transitions. Second operand 9 states. [2020-09-25 14:36:30,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:36:30,249 INFO L93 Difference]: Finished difference Result 145 states and 156 transitions. [2020-09-25 14:36:30,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:36:30,250 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-09-25 14:36:30,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:36:30,252 INFO L225 Difference]: With dead ends: 145 [2020-09-25 14:36:30,253 INFO L226 Difference]: Without dead ends: 119 [2020-09-25 14:36:30,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-09-25 14:36:30,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-09-25 14:36:30,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 105. [2020-09-25 14:36:30,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-09-25 14:36:30,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 113 transitions. [2020-09-25 14:36:30,286 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 113 transitions. Word has length 89 [2020-09-25 14:36:30,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:36:30,287 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 113 transitions. [2020-09-25 14:36:30,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:36:30,291 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 113 transitions. [2020-09-25 14:36:30,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-09-25 14:36:30,294 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:30,294 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:36:30,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:36:30,295 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:30,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:30,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1758688301, now seen corresponding path program 1 times [2020-09-25 14:36:30,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:30,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1531657920] [2020-09-25 14:36:30,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:30,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:30,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:30,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:30,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:31,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:32,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:34,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:34,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:35,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:35,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-09-25 14:36:35,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:36:35,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 14:36:35,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:35,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:35,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:36:35,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 14:36:35,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 14:36:35,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:35,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:35,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:35,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:35,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:35,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:36:35,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:35,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:36:35,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:35,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:35,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:35,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:35,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:35,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:35,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 14:36:35,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:35,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:35,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:35,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 14:36:35,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:35,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-09-25 14:36:35,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:35,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:35,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:36:35,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:35,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 14:36:35,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:35,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 14:36:35,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:35,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:35,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:35,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:36:35,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:35,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 14:36:35,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:35,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:35,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:36:35,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:35,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 14:36:35,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:35,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-25 14:36:35,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:35,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:35,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:35,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 14:36:35,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:35,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 14:36:35,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:35,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:35,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:36:35,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:35,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 14:36:35,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:35,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-25 14:36:35,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:35,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:35,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:35,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 14:36:35,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:35,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 14:36:35,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:35,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:35,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:36:35,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:35,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:36:35,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:35,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-25 14:36:35,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:35,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:35,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:35,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 14:36:35,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:35,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 14:36:35,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:35,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:35,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:36:35,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 14:36:35,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 14:36:35,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:35,953 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-25 14:36:35,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1531657920] [2020-09-25 14:36:35,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:36:35,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 14:36:35,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397217457] [2020-09-25 14:36:35,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 14:36:35,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:35,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 14:36:35,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-09-25 14:36:35,958 INFO L87 Difference]: Start difference. First operand 105 states and 113 transitions. Second operand 13 states. [2020-09-25 14:36:36,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:36:36,822 INFO L93 Difference]: Finished difference Result 182 states and 200 transitions. [2020-09-25 14:36:36,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 14:36:36,822 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 96 [2020-09-25 14:36:36,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:36:36,824 INFO L225 Difference]: With dead ends: 182 [2020-09-25 14:36:36,824 INFO L226 Difference]: Without dead ends: 126 [2020-09-25 14:36:36,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2020-09-25 14:36:36,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-09-25 14:36:36,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 114. [2020-09-25 14:36:36,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-09-25 14:36:36,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 123 transitions. [2020-09-25 14:36:36,847 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 123 transitions. Word has length 96 [2020-09-25 14:36:36,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:36:36,848 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 123 transitions. [2020-09-25 14:36:36,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 14:36:36,848 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 123 transitions. [2020-09-25 14:36:36,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-09-25 14:36:36,858 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:36,858 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:36:36,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:36:36,859 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:36,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:36,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1090353339, now seen corresponding path program 2 times [2020-09-25 14:36:36,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:36,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1009714444] [2020-09-25 14:36:36,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:36,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:36,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:39,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:39,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:39,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:41,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:41,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:42,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:42,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-25 14:36:42,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:36:42,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5204 [2020-09-25 14:36:42,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:42,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:42,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-09-25 14:36:42,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 14:36:42,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 14:36:42,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:42,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:42,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:42,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:42,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:42,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:36:42,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:42,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 14:36:42,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:42,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:42,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:42,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:42,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:42,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:42,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 14:36:42,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:42,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:43,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:43,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 14:36:43,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:43,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 962 [2020-09-25 14:36:43,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:43,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:43,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 14:36:43,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:43,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 14:36:43,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:36:44,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 14:36:44,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:44,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:44,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:44,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:36:44,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:44,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-09-25 14:36:44,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:44,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:44,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:36:44,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:44,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 14:36:44,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:44,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 14:36:44,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:44,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:44,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:44,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:36:44,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:44,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-09-25 14:36:44,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:44,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:44,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:36:44,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:36:44,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 14:36:44,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:44,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-25 14:36:44,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:44,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:45,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:45,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 14:36:45,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:45,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-09-25 14:36:45,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:45,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:45,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 14:36:45,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:36:45,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 14:36:45,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1