/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 log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product01.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 16:52:30,357 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:52:30,362 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:52:30,408 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:52:30,409 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:52:30,417 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:52:30,419 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:52:30,423 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:52:30,426 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:52:30,429 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:52:30,430 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:52:30,431 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:52:30,431 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:52:30,434 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:52:30,436 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:52:30,438 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:52:30,440 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:52:30,441 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:52:30,443 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:52:30,451 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:52:30,453 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:52:30,454 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:52:30,455 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:52:30,456 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:52:30,474 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:52:30,475 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:52:30,475 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:52:30,476 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:52:30,476 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:52:30,479 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:52:30,480 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:52:30,480 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:52:30,481 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:52:30,484 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:52:30,485 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:52:30,485 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:52:30,486 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:52:30,486 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:52:30,486 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:52:30,488 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:52:30,489 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:52:30,490 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 16:52:30,536 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:52:30,536 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:52:30,537 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:52:30,538 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:52:30,538 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:52:30,538 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:52:30,538 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:52:30,539 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:52:30,539 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:52:30,539 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:52:30,539 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:52:30,539 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:52:30,540 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:52:30,540 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:52:30,540 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:52:30,540 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:52:30,540 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:52:30,541 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:52:30,541 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:52:30,541 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:52:30,541 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:52:30,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:52:30,542 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:52:30,542 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:52:30,542 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:52:30,542 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:52:30,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:52:30,543 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:52:30,543 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:52:30,543 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;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;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;log-additional-information=true; [2020-09-24 16:52:31,030 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:52:31,053 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:52:31,060 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:52:31,062 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:52:31,069 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:52:31,071 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product01.cil.c [2020-09-24 16:52:31,146 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/13ac9e5de/64170c4fe0984f6e957a173fa58fccad/FLAG63e3a5a03 [2020-09-24 16:52:31,807 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:52:31,808 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product01.cil.c [2020-09-24 16:52:31,824 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/13ac9e5de/64170c4fe0984f6e957a173fa58fccad/FLAG63e3a5a03 [2020-09-24 16:52:32,023 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/13ac9e5de/64170c4fe0984f6e957a173fa58fccad [2020-09-24 16:52:32,037 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:52:32,042 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:52:32,044 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:52:32,044 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:52:32,049 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:52:32,050 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:52:32" (1/1) ... [2020-09-24 16:52:32,055 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fbadd11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:52:32, skipping insertion in model container [2020-09-24 16:52:32,055 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:52:32" (1/1) ... [2020-09-24 16:52:32,064 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:52:32,117 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:52:32,572 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:52:32,587 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:52:32,680 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:52:32,729 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:52:32,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:52:32 WrapperNode [2020-09-24 16:52:32,730 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:52:32,731 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:52:32,732 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:52:32,732 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:52:32,748 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:52:32" (1/1) ... [2020-09-24 16:52:32,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:52:32" (1/1) ... [2020-09-24 16:52:32,770 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:52:32" (1/1) ... [2020-09-24 16:52:32,770 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:52:32" (1/1) ... [2020-09-24 16:52:32,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:52:32" (1/1) ... [2020-09-24 16:52:32,832 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:52:32" (1/1) ... [2020-09-24 16:52:32,837 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:52:32" (1/1) ... [2020-09-24 16:52:32,844 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:52:32,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:52:32,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:52:32,845 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:52:32,847 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:52:32" (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 16:52:32,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:52:32,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:52:32,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 16:52:32,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 16:52:32,924 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 16:52:32,924 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 16:52:32,924 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 16:52:32,924 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 16:52:32,924 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 16:52:32,925 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 16:52:32,925 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 16:52:32,925 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 16:52:32,925 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:52:32,925 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 16:52:32,925 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 16:52:32,926 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 16:52:32,926 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 16:52:32,926 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 16:52:32,926 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 16:52:32,927 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 16:52:32,927 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 16:52:32,927 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 16:52:32,927 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 16:52:32,927 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 16:52:32,928 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 16:52:32,928 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 16:52:32,928 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 16:52:32,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-09-24 16:52:32,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 16:52:32,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 16:52:32,929 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 16:52:32,929 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 16:52:32,929 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 16:52:32,929 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 16:52:32,929 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:52:32,930 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 16:52:32,930 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 16:52:32,930 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 16:52:32,930 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 16:52:32,930 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 16:52:32,930 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 16:52:32,931 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 16:52:32,931 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 16:52:32,931 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 16:52:32,931 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 16:52:32,931 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 16:52:32,931 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 16:52:32,931 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 16:52:32,932 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 16:52:32,932 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 16:52:32,932 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 16:52:32,932 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:52:32,932 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 16:52:32,932 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 16:52:32,933 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 16:52:32,933 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 16:52:32,933 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 16:52:32,933 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 16:52:32,933 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-09-24 16:52:32,933 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 16:52:32,934 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 16:52:32,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 16:52:32,934 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 16:52:32,934 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 16:52:32,934 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 16:52:32,934 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 16:52:32,935 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 16:52:32,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 16:52:32,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 16:52:32,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 16:52:32,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 16:52:32,935 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 16:52:32,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 16:52:32,936 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 16:52:32,936 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 16:52:32,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 16:52:32,936 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 16:52:32,936 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 16:52:32,937 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 16:52:32,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:52:32,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 16:52:32,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:52:34,168 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:52:34,168 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 16:52:34,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:52:34 BoogieIcfgContainer [2020-09-24 16:52:34,176 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:52:34,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:52:34,177 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:52:34,181 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:52:34,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:52:32" (1/3) ... [2020-09-24 16:52:34,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@674d8ed6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:52:34, skipping insertion in model container [2020-09-24 16:52:34,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:52:32" (2/3) ... [2020-09-24 16:52:34,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@674d8ed6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:52:34, skipping insertion in model container [2020-09-24 16:52:34,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:52:34" (3/3) ... [2020-09-24 16:52:34,185 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product01.cil.c [2020-09-24 16:52:34,197 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:52:34,209 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 16:52:34,234 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 16:52:34,269 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:52:34,270 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:52:34,270 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:52:34,270 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:52:34,270 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:52:34,270 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:52:34,271 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:52:34,271 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:52:34,301 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states. [2020-09-24 16:52:34,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-24 16:52:34,318 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:52:34,320 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:52:34,320 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:52:34,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:52:34,329 INFO L82 PathProgramCache]: Analyzing trace with hash -983857260, now seen corresponding path program 1 times [2020-09-24 16:52:34,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:52:34,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1495942365] [2020-09-24 16:52:34,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:52:34,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:34,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:35,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:35,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:36,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:37,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:49,939 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:49,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-24 16:52:49,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 16:52:49,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15198 [2020-09-24 16:52:49,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:49,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 16:52:49,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-24 16:52:49,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 16:52:49,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 16:52:50,420 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 16:52:50,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:52:50,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:50,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:50,748 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:50,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 16:52:50,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:50,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-09-24 16:52:50,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:50,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:52:50,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:52:50,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 16:52:50,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:52:50,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 16:52:50,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:50,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:50,819 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:50,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:52:50,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:50,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:52:50,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:50,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:52:50,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:52:50,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:52:50,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:52:50,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 16:52:50,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:50,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:50,835 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:50,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:52:50,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:50,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:52:50,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:50,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:52:50,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:52:50,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:52:50,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:52:50,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 16:52:50,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:50,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:50,851 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:50,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:52:50,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:50,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 16:52:50,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:50,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:52:50,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:52:50,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:52:50,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:52:50,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 16:52:50,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:50,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:50,862 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:50,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:52:50,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:50,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:52:50,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:50,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:52:50,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:52:50,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:52:50,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:52:50,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-24 16:52:50,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:50,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:50,891 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:50,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:52:50,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:50,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 16:52:50,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:50,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 16:52:50,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:52:50,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:52:50,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:52:51,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-24 16:52:51,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:51,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:51,013 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:51,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:52:51,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:52:51,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:52:51,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:51,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:52:51,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:52:51,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:52:51,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:52:51,077 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 16:52:51,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1495942365] [2020-09-24 16:52:51,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:52:51,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 16:52:51,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446879493] [2020-09-24 16:52:51,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 16:52:51,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:52:51,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 16:52:51,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 16:52:51,119 INFO L87 Difference]: Start difference. First operand 241 states. Second operand 8 states. [2020-09-24 16:52:51,766 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 16:52:53,123 WARN L193 SmtUtils]: Spent 601.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 190 [2020-09-24 16:52:53,782 WARN L193 SmtUtils]: Spent 593.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 192 [2020-09-24 16:52:54,143 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 16:52:54,503 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 16:52:54,816 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 16:52:55,159 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-09-24 16:52:55,456 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 16:52:55,902 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 16:52:56,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:52:56,906 INFO L93 Difference]: Finished difference Result 422 states and 521 transitions. [2020-09-24 16:52:56,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 16:52:56,910 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 142 [2020-09-24 16:52:56,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:52:56,929 INFO L225 Difference]: With dead ends: 422 [2020-09-24 16:52:56,930 INFO L226 Difference]: Without dead ends: 294 [2020-09-24 16:52:56,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2020-09-24 16:52:56,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-09-24 16:52:57,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 264. [2020-09-24 16:52:57,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-09-24 16:52:57,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 295 transitions. [2020-09-24 16:52:57,052 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 295 transitions. Word has length 142 [2020-09-24 16:52:57,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:52:57,053 INFO L479 AbstractCegarLoop]: Abstraction has 264 states and 295 transitions. [2020-09-24 16:52:57,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 16:52:57,053 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 295 transitions. [2020-09-24 16:52:57,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-24 16:52:57,059 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:52:57,059 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:52:57,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:52:57,060 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:52:57,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:52:57,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1996268929, now seen corresponding path program 1 times [2020-09-24 16:52:57,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:52:57,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362409064] [2020-09-24 16:52:57,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:52:57,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:52:57,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:57,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:57,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:58,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:52:59,678 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:52:59,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-24 16:52:59,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 16:52:59,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2566 [2020-09-24 16:52:59,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:52:59,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:52:59,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-24 16:52:59,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 16:52:59,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:52:59,972 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 16:52:59,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:53:00,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:00,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:00,226 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:00,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 16:53:00,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:00,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-09-24 16:53:00,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:00,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:53:00,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:53:00,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 16:53:00,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:53:00,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 16:53:00,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:00,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:00,273 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:00,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:53:00,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:00,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:53:00,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:00,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:53:00,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:53:00,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:53:00,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:53:00,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 16:53:00,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:00,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:00,285 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:00,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:53:00,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:00,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:53:00,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:00,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:53:00,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:53:00,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:53:00,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:53:00,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 16:53:00,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:00,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:00,297 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:00,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:53:00,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:00,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 16:53:00,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:00,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:53:00,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:53:00,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:53:00,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:53:00,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 16:53:00,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:00,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:00,305 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:00,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:53:00,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:00,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:53:00,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:00,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:53:00,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:53:00,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:53:00,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:53:00,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-24 16:53:00,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:00,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:00,324 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:00,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:53:00,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:00,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 16:53:00,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:00,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:53:00,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:53:00,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:53:00,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:53:00,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-24 16:53:00,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:00,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:00,332 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:00,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:53:00,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:00,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:53:00,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:00,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:53:00,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:53:00,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:53:00,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:53:00,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-24 16:53:00,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:00,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:00,338 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:00,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:53:00,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:00,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:53:00,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:00,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:53:00,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:53:00,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:53:00,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:53:00,365 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 16:53:00,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362409064] [2020-09-24 16:53:00,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:53:00,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 16:53:00,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500808299] [2020-09-24 16:53:00,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 16:53:00,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:53:00,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 16:53:00,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 16:53:00,370 INFO L87 Difference]: Start difference. First operand 264 states and 295 transitions. Second operand 5 states. [2020-09-24 16:53:00,943 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 16:53:01,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:53:01,819 INFO L93 Difference]: Finished difference Result 448 states and 537 transitions. [2020-09-24 16:53:01,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 16:53:01,825 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-09-24 16:53:01,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:53:01,829 INFO L225 Difference]: With dead ends: 448 [2020-09-24 16:53:01,830 INFO L226 Difference]: Without dead ends: 294 [2020-09-24 16:53:01,833 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 16:53:01,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-09-24 16:53:01,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 264. [2020-09-24 16:53:01,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-09-24 16:53:01,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 292 transitions. [2020-09-24 16:53:01,878 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 292 transitions. Word has length 148 [2020-09-24 16:53:01,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:53:01,878 INFO L479 AbstractCegarLoop]: Abstraction has 264 states and 292 transitions. [2020-09-24 16:53:01,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 16:53:01,879 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 292 transitions. [2020-09-24 16:53:01,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-24 16:53:01,882 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:53:01,882 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:53:01,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 16:53:01,882 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:53:01,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:53:01,883 INFO L82 PathProgramCache]: Analyzing trace with hash -779028488, now seen corresponding path program 1 times [2020-09-24 16:53:01,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:53:01,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [805477090] [2020-09-24 16:53:01,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:53:01,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:01,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:02,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:02,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:03,298 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:03,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-24 16:53:03,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 16:53:03,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1370 [2020-09-24 16:53:03,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:03,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:53:03,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-24 16:53:03,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-24 16:53:03,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:53:03,617 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 16:53:03,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:53:03,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:03,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:03,859 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:03,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 16:53:03,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:03,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-09-24 16:53:03,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:03,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:53:03,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:53:03,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 16:53:03,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:53:03,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 16:53:03,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:03,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:03,902 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:03,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:53:03,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:03,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:53:03,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:03,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:53:03,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:53:03,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:53:03,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:53:03,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 16:53:03,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:03,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:03,909 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:03,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:53:03,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:03,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:53:03,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:03,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:53:03,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:53:03,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:53:03,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:53:03,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 16:53:03,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:03,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:03,921 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:03,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:53:03,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:03,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 16:53:03,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:03,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:53:03,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:53:03,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:53:03,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:53:03,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 16:53:03,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:03,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:03,930 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:03,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:53:03,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:03,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:53:03,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:03,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:53:03,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:53:03,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:53:03,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:53:03,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-24 16:53:03,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:03,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:03,947 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:03,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:53:03,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:03,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:53:03,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:03,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:53:03,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 16:53:03,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:53:03,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:53:03,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-09-24 16:53:03,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:03,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:03,955 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:03,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:53:03,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:03,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:53:03,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:03,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:53:03,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-24 16:53:03,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:53:03,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:53:03,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-24 16:53:03,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:03,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:03,961 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:03,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:53:03,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:03,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:53:03,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:03,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:53:03,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:53:03,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:53:03,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:53:03,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-24 16:53:03,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:03,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:03,968 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:03,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:53:03,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:03,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:53:03,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:03,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:53:03,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:53:03,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:53:03,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:53:03,995 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 16:53:03,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [805477090] [2020-09-24 16:53:03,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:53:03,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 16:53:03,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388178616] [2020-09-24 16:53:03,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 16:53:03,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:53:03,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 16:53:03,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 16:53:03,998 INFO L87 Difference]: Start difference. First operand 264 states and 292 transitions. Second operand 5 states. [2020-09-24 16:53:04,552 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 16:53:05,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:53:05,107 INFO L93 Difference]: Finished difference Result 363 states and 417 transitions. [2020-09-24 16:53:05,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 16:53:05,107 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-09-24 16:53:05,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:53:05,111 INFO L225 Difference]: With dead ends: 363 [2020-09-24 16:53:05,111 INFO L226 Difference]: Without dead ends: 260 [2020-09-24 16:53:05,112 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 16:53:05,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-09-24 16:53:05,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 237. [2020-09-24 16:53:05,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-09-24 16:53:05,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 252 transitions. [2020-09-24 16:53:05,147 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 252 transitions. Word has length 151 [2020-09-24 16:53:05,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:53:05,147 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 252 transitions. [2020-09-24 16:53:05,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 16:53:05,148 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 252 transitions. [2020-09-24 16:53:05,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-24 16:53:05,150 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:53:05,150 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:53:05,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 16:53:05,151 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:53:05,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:53:05,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1597563507, now seen corresponding path program 1 times [2020-09-24 16:53:05,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:53:05,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1345936936] [2020-09-24 16:53:05,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:53:05,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:05,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:06,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:06,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:11,923 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:11,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-09-24 16:53:11,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 16:53:11,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6728 [2020-09-24 16:53:11,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:11,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 16:53:11,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-24 16:53:11,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-24 16:53:11,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:53:12,368 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 16:53:12,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:53:12,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:12,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:12,639 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:12,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 16:53:12,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:12,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-09-24 16:53:12,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:12,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:53:12,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:53:12,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 16:53:12,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:53:12,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 16:53:12,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:12,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:12,688 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:12,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:53:12,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:12,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:53:12,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:12,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:53:12,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:53:12,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:53:12,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:53:12,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 16:53:12,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:12,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:12,697 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:12,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:53:12,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:12,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:53:12,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:12,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:53:12,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:53:12,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:53:12,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:53:12,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 16:53:12,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:12,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:12,713 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:12,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:53:12,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:12,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 16:53:12,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:12,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:53:12,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:53:12,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:53:12,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:53:12,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 16:53:12,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:12,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:12,723 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:12,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:53:12,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:12,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:53:12,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:12,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:53:12,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:53:12,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:53:12,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:53:12,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-24 16:53:12,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:12,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:12,756 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:12,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:53:12,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:12,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 16:53:12,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:12,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:53:12,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:53:12,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:53:12,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:53:12,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-24 16:53:12,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:12,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:12,766 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:12,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:53:12,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:12,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:53:12,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:12,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:53:12,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:53:12,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:53:12,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:53:12,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-09-24 16:53:12,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:12,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:12,777 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:12,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:53:12,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:12,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 16:53:12,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:12,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:53:12,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:53:12,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:53:12,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:53:12,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-24 16:53:12,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:53:12,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:53:12,796 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:53:12,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:53:12,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:53:12,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 16:53:12,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:53:12,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 16:53:12,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:53:12,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:53:12,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:53:12,891 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 16:53:12,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1345936936] [2020-09-24 16:53:12,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:53:12,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 16:53:12,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073448] [2020-09-24 16:53:12,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 16:53:12,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:53:12,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 16:53:12,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 16:53:12,897 INFO L87 Difference]: Start difference. First operand 237 states and 252 transitions. Second operand 9 states. [2020-09-24 16:53:13,608 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 16:53:14,632 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 16:53:14,986 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 16:53:15,330 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 16:53:15,664 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 16:53:15,977 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 16:53:16,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:53:16,194 INFO L93 Difference]: Finished difference Result 262 states and 284 transitions. [2020-09-24 16:53:16,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 16:53:16,195 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 160 [2020-09-24 16:53:16,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:53:16,196 INFO L225 Difference]: With dead ends: 262 [2020-09-24 16:53:16,196 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 16:53:16,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-09-24 16:53:16,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 16:53:16,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 16:53:16,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 16:53:16,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 16:53:16,200 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 160 [2020-09-24 16:53:16,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:53:16,200 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 16:53:16,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 16:53:16,200 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 16:53:16,200 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 16:53:16,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 16:53:16,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 16:53:16,395 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 16:53:16,627 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 7 [2020-09-24 16:53:16,820 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 16:53:16,995 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 16:53:17,180 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 16:53:17,356 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 16:53:17,531 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 16:53:17,724 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 7 [2020-09-24 16:53:17,883 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 16:53:18,041 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 16:53:18,186 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 7 [2020-09-24 16:53:18,502 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-09-24 16:53:18,660 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 16:53:18,816 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 16:53:18,918 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 7 [2020-09-24 16:53:19,057 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 16:53:19,207 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 16:53:19,360 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 16:53:19,518 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 16:53:19,677 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 16:53:19,826 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 16:53:19,974 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 16:53:20,128 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 16:53:20,282 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 16:53:20,431 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188