/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=BIGGEST --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-ext2-properties/list_and_tree_cnstr-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:30:02,427 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:30:02,431 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:30:02,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:30:02,458 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:30:02,459 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:30:02,461 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:30:02,463 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:30:02,465 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:30:02,466 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:30:02,467 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:30:02,468 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:30:02,468 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:30:02,470 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:30:02,471 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:30:02,472 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:30:02,473 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:30:02,474 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:30:02,476 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:30:02,479 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:30:02,480 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:30:02,482 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:30:02,483 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:30:02,484 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:30:02,487 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:30:02,487 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:30:02,488 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:30:02,489 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:30:02,489 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:30:02,490 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:30:02,491 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:30:02,492 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:30:02,493 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:30:02,494 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:30:02,495 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:30:02,495 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:30:02,496 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:30:02,496 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:30:02,496 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:30:02,497 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:30:02,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:30:02,499 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 20:30:02,543 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:30:02,543 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:30:02,545 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:30:02,545 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:30:02,545 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:30:02,546 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:30:02,546 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:30:02,546 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:30:02,546 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:30:02,547 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:30:02,548 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:30:02,549 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:30:02,549 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:30:02,549 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:30:02,550 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:30:02,550 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:30:02,550 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:30:02,550 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:30:02,550 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:30:02,551 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:30:02,551 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:30:02,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:30:02,552 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:30:02,552 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:30:02,552 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:30:02,552 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:30:02,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:30:02,553 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:30:02,553 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:30:02,553 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true; [2020-09-24 20:30:03,047 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:30:03,066 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:30:03,071 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:30:03,073 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:30:03,073 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:30:03,074 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext2-properties/list_and_tree_cnstr-1.i [2020-09-24 20:30:03,172 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e0822c05e/1230fc80ed984ca98ae7580d90ffd1da/FLAG3ce8284f6 [2020-09-24 20:30:03,810 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:30:03,811 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext2-properties/list_and_tree_cnstr-1.i [2020-09-24 20:30:03,827 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e0822c05e/1230fc80ed984ca98ae7580d90ffd1da/FLAG3ce8284f6 [2020-09-24 20:30:04,065 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e0822c05e/1230fc80ed984ca98ae7580d90ffd1da [2020-09-24 20:30:04,079 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:30:04,085 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:30:04,086 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:30:04,086 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:30:04,091 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:30:04,092 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:30:04" (1/1) ... [2020-09-24 20:30:04,097 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6317371b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:30:04, skipping insertion in model container [2020-09-24 20:30:04,097 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:30:04" (1/1) ... [2020-09-24 20:30:04,106 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:30:04,187 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:30:04,783 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:30:04,804 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:30:04,890 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:30:04,942 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:30:04,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:30:04 WrapperNode [2020-09-24 20:30:04,943 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:30:04,944 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:30:04,944 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:30:04,944 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:30:04,963 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:30:04" (1/1) ... [2020-09-24 20:30:04,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:30:04" (1/1) ... [2020-09-24 20:30:04,984 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:30:04" (1/1) ... [2020-09-24 20:30:04,985 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:30:04" (1/1) ... [2020-09-24 20:30:05,007 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:30:04" (1/1) ... [2020-09-24 20:30:05,017 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:30:04" (1/1) ... [2020-09-24 20:30:05,021 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:30:04" (1/1) ... [2020-09-24 20:30:05,032 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:30:05,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:30:05,033 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:30:05,033 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:30:05,038 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:30:04" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:30:05,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:30:05,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:30:05,117 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-24 20:30:05,117 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-24 20:30:05,118 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-24 20:30:05,118 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:30:05,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:30:05,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:30:05,118 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-24 20:30:05,118 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-24 20:30:05,119 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-24 20:30:05,119 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-24 20:30:05,119 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-24 20:30:05,119 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-24 20:30:05,119 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-24 20:30:05,121 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-24 20:30:05,121 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-24 20:30:05,122 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-24 20:30:05,122 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-24 20:30:05,122 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-24 20:30:05,122 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-24 20:30:05,122 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-24 20:30:05,123 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-24 20:30:05,123 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-24 20:30:05,123 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-24 20:30:05,124 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-24 20:30:05,124 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-24 20:30:05,124 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-24 20:30:05,125 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-24 20:30:05,125 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-24 20:30:05,125 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-24 20:30:05,125 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-24 20:30:05,125 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-24 20:30:05,125 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-24 20:30:05,125 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-24 20:30:05,126 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-24 20:30:05,126 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-24 20:30:05,126 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-24 20:30:05,126 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-24 20:30:05,126 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-24 20:30:05,126 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-24 20:30:05,127 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-24 20:30:05,127 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-24 20:30:05,127 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-24 20:30:05,127 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-24 20:30:05,127 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-24 20:30:05,127 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-24 20:30:05,127 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-24 20:30:05,128 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-24 20:30:05,128 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-24 20:30:05,128 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-24 20:30:05,128 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-24 20:30:05,129 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-24 20:30:05,129 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-24 20:30:05,129 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-24 20:30:05,129 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-24 20:30:05,129 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-24 20:30:05,129 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-24 20:30:05,129 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-24 20:30:05,130 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-24 20:30:05,130 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 20:30:05,130 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 20:30:05,130 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-24 20:30:05,130 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 20:30:05,130 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-24 20:30:05,130 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-24 20:30:05,130 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-24 20:30:05,131 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-24 20:30:05,131 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-24 20:30:05,131 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 20:30:05,131 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-24 20:30:05,131 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-24 20:30:05,131 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-24 20:30:05,132 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 20:30:05,132 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-24 20:30:05,132 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-24 20:30:05,132 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-24 20:30:05,132 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-24 20:30:05,132 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-24 20:30:05,133 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-24 20:30:05,133 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-24 20:30:05,133 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-24 20:30:05,133 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-24 20:30:05,133 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-24 20:30:05,133 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-24 20:30:05,134 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-24 20:30:05,134 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-24 20:30:05,134 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-24 20:30:05,134 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-24 20:30:05,134 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-24 20:30:05,134 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-24 20:30:05,135 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-24 20:30:05,135 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-24 20:30:05,135 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-24 20:30:05,135 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-24 20:30:05,135 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-24 20:30:05,135 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-24 20:30:05,136 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-24 20:30:05,136 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-24 20:30:05,136 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-24 20:30:05,136 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-24 20:30:05,136 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-24 20:30:05,136 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-24 20:30:05,136 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-24 20:30:05,137 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-24 20:30:05,137 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-24 20:30:05,137 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-24 20:30:05,137 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-24 20:30:05,137 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-24 20:30:05,137 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-24 20:30:05,138 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-24 20:30:05,138 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-24 20:30:05,139 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-24 20:30:05,139 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-24 20:30:05,139 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:30:05,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 20:30:05,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 20:30:05,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 20:30:05,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 20:30:05,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 20:30:05,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 20:30:05,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:30:05,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:30:05,505 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-24 20:30:05,999 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:30:06,000 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-24 20:30:06,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:30:06 BoogieIcfgContainer [2020-09-24 20:30:06,006 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:30:06,007 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:30:06,008 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:30:06,012 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:30:06,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:30:04" (1/3) ... [2020-09-24 20:30:06,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@614c2933 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:30:06, skipping insertion in model container [2020-09-24 20:30:06,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:30:04" (2/3) ... [2020-09-24 20:30:06,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@614c2933 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:30:06, skipping insertion in model container [2020-09-24 20:30:06,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:30:06" (3/3) ... [2020-09-24 20:30:06,017 INFO L109 eAbstractionObserver]: Analyzing ICFG list_and_tree_cnstr-1.i [2020-09-24 20:30:06,029 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:30:06,040 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:30:06,065 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:30:06,095 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:30:06,096 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:30:06,096 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:30:06,096 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:30:06,096 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:30:06,096 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:30:06,097 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:30:06,097 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:30:06,126 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states. [2020-09-24 20:30:06,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-24 20:30:06,139 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:30:06,141 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] [2020-09-24 20:30:06,141 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:30:06,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:30:06,150 INFO L82 PathProgramCache]: Analyzing trace with hash -652445128, now seen corresponding path program 1 times [2020-09-24 20:30:06,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:30:06,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [598584910] [2020-09-24 20:30:06,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:30:06,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:06,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:06,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:06,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:06,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:06,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:06,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:06,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:07,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:07,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 20:30:07,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 20:30:07,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 862 [2020-09-24 20:30:07,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:07,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:30:07,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-24 20:30:07,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:30:07,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 20:30:07,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:30:07,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:07,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:07,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:07,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:30:07,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:30:07,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 20:30:07,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:07,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:30:07,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:30:07,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:30:07,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:30:07,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:30:07,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [598584910] [2020-09-24 20:30:07,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:30:07,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 20:30:07,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015417721] [2020-09-24 20:30:07,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 20:30:07,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:30:07,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 20:30:07,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 20:30:07,421 INFO L87 Difference]: Start difference. First operand 177 states. Second operand 7 states. [2020-09-24 20:30:08,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:30:08,197 INFO L93 Difference]: Finished difference Result 430 states and 509 transitions. [2020-09-24 20:30:08,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 20:30:08,202 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2020-09-24 20:30:08,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:30:08,226 INFO L225 Difference]: With dead ends: 430 [2020-09-24 20:30:08,227 INFO L226 Difference]: Without dead ends: 237 [2020-09-24 20:30:08,235 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:30:08,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-09-24 20:30:08,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 179. [2020-09-24 20:30:08,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-09-24 20:30:08,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 199 transitions. [2020-09-24 20:30:08,297 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 199 transitions. Word has length 31 [2020-09-24 20:30:08,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:30:08,297 INFO L479 AbstractCegarLoop]: Abstraction has 179 states and 199 transitions. [2020-09-24 20:30:08,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 20:30:08,297 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 199 transitions. [2020-09-24 20:30:08,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-24 20:30:08,301 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:30:08,301 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 20:30:08,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:30:08,302 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:30:08,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:30:08,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1367895296, now seen corresponding path program 1 times [2020-09-24 20:30:08,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:30:08,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1171801281] [2020-09-24 20:30:08,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:30:08,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:08,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:08,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:08,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:08,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 20:30:08,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:30:08,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 528 [2020-09-24 20:30:08,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:08,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:30:08,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-24 20:30:08,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 20:30:08,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:30:08,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:30:08,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:08,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:08,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:08,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:30:08,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:30:08,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:30:08,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:08,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:30:08,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:30:08,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:30:08,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:30:08,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:30:08,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1171801281] [2020-09-24 20:30:08,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:30:08,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 20:30:08,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303656701] [2020-09-24 20:30:08,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 20:30:08,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:30:08,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 20:30:08,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 20:30:08,948 INFO L87 Difference]: Start difference. First operand 179 states and 199 transitions. Second operand 7 states. [2020-09-24 20:30:09,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:30:09,444 INFO L93 Difference]: Finished difference Result 246 states and 268 transitions. [2020-09-24 20:30:09,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 20:30:09,444 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 47 [2020-09-24 20:30:09,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:30:09,447 INFO L225 Difference]: With dead ends: 246 [2020-09-24 20:30:09,447 INFO L226 Difference]: Without dead ends: 231 [2020-09-24 20:30:09,451 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-24 20:30:09,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-09-24 20:30:09,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 176. [2020-09-24 20:30:09,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-09-24 20:30:09,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 195 transitions. [2020-09-24 20:30:09,479 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 195 transitions. Word has length 47 [2020-09-24 20:30:09,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:30:09,485 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 195 transitions. [2020-09-24 20:30:09,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 20:30:09,485 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 195 transitions. [2020-09-24 20:30:09,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-24 20:30:09,491 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:30:09,491 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 20:30:09,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:30:09,492 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:30:09,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:30:09,492 INFO L82 PathProgramCache]: Analyzing trace with hash -331213520, now seen corresponding path program 1 times [2020-09-24 20:30:09,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:30:09,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974706646] [2020-09-24 20:30:09,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:30:09,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:09,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:09,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:10,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:10,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 20:30:10,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:30:10,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 558 [2020-09-24 20:30:10,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:10,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:30:10,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-24 20:30:10,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 20:30:10,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:30:10,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:30:10,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:10,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:10,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:10,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:30:10,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:30:10,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:30:10,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:10,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:30:10,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:30:10,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:30:10,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:30:10,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:30:10,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974706646] [2020-09-24 20:30:10,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:30:10,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 20:30:10,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642675564] [2020-09-24 20:30:10,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 20:30:10,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:30:10,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 20:30:10,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 20:30:10,160 INFO L87 Difference]: Start difference. First operand 176 states and 195 transitions. Second operand 7 states. [2020-09-24 20:30:10,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:30:10,540 INFO L93 Difference]: Finished difference Result 228 states and 249 transitions. [2020-09-24 20:30:10,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 20:30:10,541 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 47 [2020-09-24 20:30:10,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:30:10,543 INFO L225 Difference]: With dead ends: 228 [2020-09-24 20:30:10,543 INFO L226 Difference]: Without dead ends: 204 [2020-09-24 20:30:10,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-24 20:30:10,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-09-24 20:30:10,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 171. [2020-09-24 20:30:10,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-09-24 20:30:10,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 189 transitions. [2020-09-24 20:30:10,567 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 189 transitions. Word has length 47 [2020-09-24 20:30:10,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:30:10,571 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 189 transitions. [2020-09-24 20:30:10,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 20:30:10,571 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 189 transitions. [2020-09-24 20:30:10,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 20:30:10,577 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:30:10,577 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 20:30:10,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:30:10,578 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:30:10,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:30:10,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1290320609, now seen corresponding path program 1 times [2020-09-24 20:30:10,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:30:10,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2027702440] [2020-09-24 20:30:10,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:30:10,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:10,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:10,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:11,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:12,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:12,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 20:30:12,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:30:12,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1978 [2020-09-24 20:30:12,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:12,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:30:12,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 20:30:12,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 20:30:12,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:30:12,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:30:12,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:12,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:12,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:12,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:30:12,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:30:12,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:30:12,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:12,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:30:12,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:30:12,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:30:12,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:30:12,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:30:12,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2027702440] [2020-09-24 20:30:12,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:30:12,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 20:30:12,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980244618] [2020-09-24 20:30:12,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 20:30:12,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:30:12,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 20:30:12,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-09-24 20:30:12,897 INFO L87 Difference]: Start difference. First operand 171 states and 189 transitions. Second operand 15 states. [2020-09-24 20:30:13,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:30:13,948 INFO L93 Difference]: Finished difference Result 266 states and 289 transitions. [2020-09-24 20:30:13,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 20:30:13,948 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 52 [2020-09-24 20:30:13,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:30:13,950 INFO L225 Difference]: With dead ends: 266 [2020-09-24 20:30:13,950 INFO L226 Difference]: Without dead ends: 253 [2020-09-24 20:30:13,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=228, Invalid=764, Unknown=0, NotChecked=0, Total=992 [2020-09-24 20:30:13,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-09-24 20:30:13,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 187. [2020-09-24 20:30:13,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-09-24 20:30:13,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 206 transitions. [2020-09-24 20:30:13,967 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 206 transitions. Word has length 52 [2020-09-24 20:30:13,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:30:13,968 INFO L479 AbstractCegarLoop]: Abstraction has 187 states and 206 transitions. [2020-09-24 20:30:13,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 20:30:13,973 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 206 transitions. [2020-09-24 20:30:13,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 20:30:13,978 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:30:13,983 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 20:30:13,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 20:30:13,983 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:30:13,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:30:13,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1305030225, now seen corresponding path program 1 times [2020-09-24 20:30:13,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:30:13,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [299971951] [2020-09-24 20:30:13,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:30:14,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:14,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:14,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:14,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:15,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:15,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 20:30:15,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:30:15,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1954 [2020-09-24 20:30:15,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:15,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:30:15,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 20:30:15,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 20:30:15,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:30:16,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:30:16,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:16,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:16,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:16,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:30:16,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:30:16,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:30:16,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:16,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:30:16,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:30:16,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:30:16,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:30:16,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:30:16,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [299971951] [2020-09-24 20:30:16,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:30:16,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 20:30:16,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931412251] [2020-09-24 20:30:16,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 20:30:16,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:30:16,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 20:30:16,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-09-24 20:30:16,309 INFO L87 Difference]: Start difference. First operand 187 states and 206 transitions. Second operand 15 states. [2020-09-24 20:30:17,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:30:17,519 INFO L93 Difference]: Finished difference Result 290 states and 316 transitions. [2020-09-24 20:30:17,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 20:30:17,520 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 52 [2020-09-24 20:30:17,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:30:17,522 INFO L225 Difference]: With dead ends: 290 [2020-09-24 20:30:17,522 INFO L226 Difference]: Without dead ends: 284 [2020-09-24 20:30:17,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=228, Invalid=764, Unknown=0, NotChecked=0, Total=992 [2020-09-24 20:30:17,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-09-24 20:30:17,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 209. [2020-09-24 20:30:17,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-09-24 20:30:17,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 231 transitions. [2020-09-24 20:30:17,532 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 231 transitions. Word has length 52 [2020-09-24 20:30:17,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:30:17,533 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 231 transitions. [2020-09-24 20:30:17,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 20:30:17,533 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 231 transitions. [2020-09-24 20:30:17,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 20:30:17,534 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:30:17,535 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 20:30:17,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 20:30:17,536 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:30:17,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:30:17,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1034839081, now seen corresponding path program 1 times [2020-09-24 20:30:17,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:30:17,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1197637240] [2020-09-24 20:30:17,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:30:17,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:17,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:17,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:18,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:18,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 20:30:18,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:30:18,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1152 [2020-09-24 20:30:18,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:18,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 20:30:18,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 20:30:18,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 20:30:18,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:30:19,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:30:19,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:19,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:19,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:19,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:30:19,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:30:19,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:30:19,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:19,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:30:19,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:30:19,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:30:19,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:30:19,040 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:30:19,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1197637240] [2020-09-24 20:30:19,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:30:19,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 20:30:19,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226905643] [2020-09-24 20:30:19,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 20:30:19,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:30:19,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 20:30:19,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-24 20:30:19,043 INFO L87 Difference]: Start difference. First operand 209 states and 231 transitions. Second operand 16 states. [2020-09-24 20:30:20,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:30:20,353 INFO L93 Difference]: Finished difference Result 274 states and 299 transitions. [2020-09-24 20:30:20,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-24 20:30:20,353 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 58 [2020-09-24 20:30:20,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:30:20,355 INFO L225 Difference]: With dead ends: 274 [2020-09-24 20:30:20,356 INFO L226 Difference]: Without dead ends: 268 [2020-09-24 20:30:20,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2020-09-24 20:30:20,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-09-24 20:30:20,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 213. [2020-09-24 20:30:20,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-09-24 20:30:20,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 235 transitions. [2020-09-24 20:30:20,369 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 235 transitions. Word has length 58 [2020-09-24 20:30:20,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:30:20,370 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 235 transitions. [2020-09-24 20:30:20,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 20:30:20,370 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 235 transitions. [2020-09-24 20:30:20,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 20:30:20,371 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:30:20,371 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 20:30:20,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 20:30:20,372 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:30:20,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:30:20,375 INFO L82 PathProgramCache]: Analyzing trace with hash 218965575, now seen corresponding path program 1 times [2020-09-24 20:30:20,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:30:20,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835769504] [2020-09-24 20:30:20,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:30:20,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:20,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:20,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:21,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:21,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 20:30:21,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:30:21,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1150 [2020-09-24 20:30:21,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:21,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 20:30:21,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 20:30:21,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 20:30:21,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:30:21,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:30:21,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:21,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:21,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:21,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:30:21,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:30:21,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:30:21,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:21,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:30:21,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:30:21,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:30:21,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:30:21,937 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:30:21,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1835769504] [2020-09-24 20:30:21,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:30:21,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 20:30:21,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778661668] [2020-09-24 20:30:21,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 20:30:21,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:30:21,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 20:30:21,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-24 20:30:21,940 INFO L87 Difference]: Start difference. First operand 213 states and 235 transitions. Second operand 16 states. [2020-09-24 20:30:23,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:30:23,335 INFO L93 Difference]: Finished difference Result 288 states and 313 transitions. [2020-09-24 20:30:23,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-24 20:30:23,335 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 58 [2020-09-24 20:30:23,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:30:23,338 INFO L225 Difference]: With dead ends: 288 [2020-09-24 20:30:23,338 INFO L226 Difference]: Without dead ends: 282 [2020-09-24 20:30:23,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2020-09-24 20:30:23,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-09-24 20:30:23,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 222. [2020-09-24 20:30:23,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-09-24 20:30:23,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 245 transitions. [2020-09-24 20:30:23,376 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 245 transitions. Word has length 58 [2020-09-24 20:30:23,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:30:23,376 INFO L479 AbstractCegarLoop]: Abstraction has 222 states and 245 transitions. [2020-09-24 20:30:23,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 20:30:23,376 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 245 transitions. [2020-09-24 20:30:23,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 20:30:23,378 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:30:23,378 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 20:30:23,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 20:30:23,378 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:30:23,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:30:23,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1255647351, now seen corresponding path program 1 times [2020-09-24 20:30:23,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:30:23,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584931464] [2020-09-24 20:30:23,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:30:23,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:23,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:23,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:23,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:26,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:26,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 20:30:26,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:30:26,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3009 [2020-09-24 20:30:26,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:26,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 20:30:26,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 20:30:26,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 20:30:26,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:30:26,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:30:26,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:26,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:26,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:26,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:30:26,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:30:26,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:30:26,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:26,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:30:26,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:30:26,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:30:26,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:30:26,705 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:30:26,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1584931464] [2020-09-24 20:30:26,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:30:26,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 20:30:26,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420654926] [2020-09-24 20:30:26,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 20:30:26,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:30:26,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 20:30:26,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-24 20:30:26,708 INFO L87 Difference]: Start difference. First operand 222 states and 245 transitions. Second operand 16 states. [2020-09-24 20:30:28,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:30:28,297 INFO L93 Difference]: Finished difference Result 297 states and 323 transitions. [2020-09-24 20:30:28,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-24 20:30:28,304 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 58 [2020-09-24 20:30:28,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:30:28,306 INFO L225 Difference]: With dead ends: 297 [2020-09-24 20:30:28,307 INFO L226 Difference]: Without dead ends: 291 [2020-09-24 20:30:28,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2020-09-24 20:30:28,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-09-24 20:30:28,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 222. [2020-09-24 20:30:28,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-09-24 20:30:28,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 245 transitions. [2020-09-24 20:30:28,317 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 245 transitions. Word has length 58 [2020-09-24 20:30:28,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:30:28,318 INFO L479 AbstractCegarLoop]: Abstraction has 222 states and 245 transitions. [2020-09-24 20:30:28,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 20:30:28,318 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 245 transitions. [2020-09-24 20:30:28,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-24 20:30:28,319 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:30:28,320 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-09-24 20:30:28,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 20:30:28,320 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:30:28,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:30:28,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1042030712, now seen corresponding path program 2 times [2020-09-24 20:30:28,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:30:28,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88746626] [2020-09-24 20:30:28,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:30:28,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:28,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:28,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:29,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:31,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:31,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-24 20:30:31,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:30:31,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3391 [2020-09-24 20:30:31,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:31,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 20:30:31,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 20:30:31,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 20:30:31,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:30:32,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:30:32,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:32,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:32,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:32,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:30:32,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:30:32,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 20:30:32,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:32,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:30:32,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:30:32,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:30:32,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:30:32,148 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:30:32,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88746626] [2020-09-24 20:30:32,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:30:32,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-24 20:30:32,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48181762] [2020-09-24 20:30:32,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-24 20:30:32,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:30:32,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-24 20:30:32,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2020-09-24 20:30:32,151 INFO L87 Difference]: Start difference. First operand 222 states and 245 transitions. Second operand 20 states. [2020-09-24 20:30:33,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:30:33,438 INFO L93 Difference]: Finished difference Result 299 states and 327 transitions. [2020-09-24 20:30:33,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-24 20:30:33,439 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 63 [2020-09-24 20:30:33,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:30:33,442 INFO L225 Difference]: With dead ends: 299 [2020-09-24 20:30:33,442 INFO L226 Difference]: Without dead ends: 286 [2020-09-24 20:30:33,444 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=296, Invalid=1110, Unknown=0, NotChecked=0, Total=1406 [2020-09-24 20:30:33,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-09-24 20:30:33,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 238. [2020-09-24 20:30:33,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-09-24 20:30:33,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 262 transitions. [2020-09-24 20:30:33,452 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 262 transitions. Word has length 63 [2020-09-24 20:30:33,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:30:33,453 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 262 transitions. [2020-09-24 20:30:33,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-24 20:30:33,453 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 262 transitions. [2020-09-24 20:30:33,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-24 20:30:33,454 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:30:33,454 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 20:30:33,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 20:30:33,455 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:30:33,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:30:33,455 INFO L82 PathProgramCache]: Analyzing trace with hash 352263162, now seen corresponding path program 1 times [2020-09-24 20:30:33,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:30:33,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1791619688] [2020-09-24 20:30:33,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:30:33,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:33,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:33,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:33,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:38,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:38,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-24 20:30:38,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:30:38,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 20:30:38,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:38,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 20:30:38,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 20:30:38,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-24 20:30:38,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:30:38,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:30:38,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:38,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:38,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:38,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:30:38,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:30:38,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:30:38,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:38,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:30:38,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:30:38,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:30:38,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:30:38,874 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:30:38,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1791619688] [2020-09-24 20:30:38,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:30:38,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-24 20:30:38,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434895827] [2020-09-24 20:30:38,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-24 20:30:38,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:30:38,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-24 20:30:38,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2020-09-24 20:30:38,879 INFO L87 Difference]: Start difference. First operand 238 states and 262 transitions. Second operand 20 states. [2020-09-24 20:30:40,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:30:40,395 INFO L93 Difference]: Finished difference Result 341 states and 372 transitions. [2020-09-24 20:30:40,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-24 20:30:40,396 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 63 [2020-09-24 20:30:40,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:30:40,398 INFO L225 Difference]: With dead ends: 341 [2020-09-24 20:30:40,398 INFO L226 Difference]: Without dead ends: 335 [2020-09-24 20:30:40,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=356, Invalid=1450, Unknown=0, NotChecked=0, Total=1806 [2020-09-24 20:30:40,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-09-24 20:30:40,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 252. [2020-09-24 20:30:40,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-09-24 20:30:40,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 277 transitions. [2020-09-24 20:30:40,409 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 277 transitions. Word has length 63 [2020-09-24 20:30:40,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:30:40,409 INFO L479 AbstractCegarLoop]: Abstraction has 252 states and 277 transitions. [2020-09-24 20:30:40,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-24 20:30:40,409 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 277 transitions. [2020-09-24 20:30:40,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-24 20:30:40,410 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:30:40,411 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-09-24 20:30:40,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 20:30:40,411 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:30:40,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:30:40,412 INFO L82 PathProgramCache]: Analyzing trace with hash 2051879624, now seen corresponding path program 2 times [2020-09-24 20:30:40,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:30:40,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1247159595] [2020-09-24 20:30:40,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:30:40,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:40,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:40,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:40,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:44,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:44,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-24 20:30:44,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:30:44,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4471 [2020-09-24 20:30:44,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:44,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 20:30:44,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 20:30:44,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-24 20:30:44,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:30:45,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:30:45,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:45,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:45,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:45,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:30:45,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:30:45,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 20:30:45,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:45,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:30:45,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:30:45,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:30:45,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:30:45,539 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:30:45,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1247159595] [2020-09-24 20:30:45,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:30:45,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-24 20:30:45,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246007301] [2020-09-24 20:30:45,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-24 20:30:45,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:30:45,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-24 20:30:45,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2020-09-24 20:30:45,543 INFO L87 Difference]: Start difference. First operand 252 states and 277 transitions. Second operand 20 states. [2020-09-24 20:30:47,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:30:47,370 INFO L93 Difference]: Finished difference Result 354 states and 387 transitions. [2020-09-24 20:30:47,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-24 20:30:47,371 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 63 [2020-09-24 20:30:47,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:30:47,373 INFO L225 Difference]: With dead ends: 354 [2020-09-24 20:30:47,373 INFO L226 Difference]: Without dead ends: 348 [2020-09-24 20:30:47,374 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=289, Invalid=1117, Unknown=0, NotChecked=0, Total=1406 [2020-09-24 20:30:47,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-09-24 20:30:47,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 254. [2020-09-24 20:30:47,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-09-24 20:30:47,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 280 transitions. [2020-09-24 20:30:47,384 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 280 transitions. Word has length 63 [2020-09-24 20:30:47,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:30:47,384 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 280 transitions. [2020-09-24 20:30:47,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-24 20:30:47,385 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 280 transitions. [2020-09-24 20:30:47,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-24 20:30:47,386 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:30:47,386 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:30:47,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 20:30:47,386 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:30:47,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:30:47,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1724347713, now seen corresponding path program 1 times [2020-09-24 20:30:47,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:30:47,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2091017826] [2020-09-24 20:30:47,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:30:47,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:47,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:47,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:49,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:49,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 20:30:49,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:30:49,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1603 [2020-09-24 20:30:49,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:49,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 20:30:49,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 20:30:49,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 20:30:49,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:30:49,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:30:49,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:49,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:49,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:49,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:30:49,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:30:49,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 20:30:49,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:49,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:30:49,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:30:49,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:30:49,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:30:49,269 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:30:49,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2091017826] [2020-09-24 20:30:49,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:30:49,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 20:30:49,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892986673] [2020-09-24 20:30:49,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 20:30:49,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:30:49,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 20:30:49,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-24 20:30:49,272 INFO L87 Difference]: Start difference. First operand 254 states and 280 transitions. Second operand 16 states.