/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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_product46.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:05:21,360 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:05:21,364 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:05:21,394 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:05:21,395 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:05:21,404 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:05:21,407 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:05:21,411 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:05:21,414 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:05:21,417 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:05:21,419 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:05:21,421 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:05:21,422 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:05:21,425 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:05:21,428 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:05:21,430 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:05:21,432 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:05:21,434 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:05:21,435 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:05:21,445 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:05:21,447 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:05:21,448 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:05:21,449 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:05:21,450 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:05:21,463 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:05:21,463 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:05:21,471 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:05:21,472 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:05:21,473 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:05:21,476 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:05:21,476 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:05:21,477 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:05:21,478 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:05:21,481 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:05:21,483 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:05:21,483 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:05:21,485 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:05:21,485 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:05:21,485 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:05:21,487 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:05:21,487 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:05:21,488 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 18:05:21,515 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:05:21,516 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:05:21,517 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:05:21,518 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:05:21,518 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:05:21,518 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:05:21,518 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:05:21,518 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:05:21,519 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:05:21,519 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:05:21,519 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:05:21,519 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:05:21,519 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:05:21,520 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:05:21,520 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:05:21,520 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:05:21,520 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:05:21,520 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:05:21,521 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:05:21,521 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:05:21,521 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:05:21,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:05:21,522 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:05:21,522 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:05:21,522 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:05:21,522 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:05:21,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:05:21,523 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:05:21,523 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:05:21,523 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 18:05:22,001 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:05:22,019 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:05:22,023 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:05:22,025 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:05:22,026 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:05:22,027 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product46.cil.c [2020-09-24 18:05:22,107 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3482a714d/d9238948567a4dd19e5218a3e9a33178/FLAG743d202bc [2020-09-24 18:05:22,784 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:05:22,785 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product46.cil.c [2020-09-24 18:05:22,801 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3482a714d/d9238948567a4dd19e5218a3e9a33178/FLAG743d202bc [2020-09-24 18:05:22,999 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3482a714d/d9238948567a4dd19e5218a3e9a33178 [2020-09-24 18:05:23,013 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:05:23,029 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:05:23,031 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:05:23,031 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:05:23,036 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:05:23,039 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:05:23" (1/1) ... [2020-09-24 18:05:23,047 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78532141 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:05:23, skipping insertion in model container [2020-09-24 18:05:23,048 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:05:23" (1/1) ... [2020-09-24 18:05:23,063 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:05:23,116 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:05:23,506 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:05:23,644 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:05:23,719 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:05:23,758 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:05:23,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:05:23 WrapperNode [2020-09-24 18:05:23,761 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:05:23,764 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:05:23,764 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:05:23,764 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:05:23,781 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:05:23" (1/1) ... [2020-09-24 18:05:23,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:05:23" (1/1) ... [2020-09-24 18:05:23,803 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:05:23" (1/1) ... [2020-09-24 18:05:23,804 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:05:23" (1/1) ... [2020-09-24 18:05:23,835 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:05:23" (1/1) ... [2020-09-24 18:05:23,847 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:05:23" (1/1) ... [2020-09-24 18:05:23,852 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:05:23" (1/1) ... [2020-09-24 18:05:23,867 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:05:23,868 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:05:23,868 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:05:23,868 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:05:23,870 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:05:23" (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 18:05:23,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:05:23,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:05:23,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 18:05:23,954 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 18:05:23,954 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 18:05:23,955 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 18:05:23,955 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 18:05:23,955 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:05:23,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-09-24 18:05:23,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 18:05:23,956 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 18:05:23,956 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 18:05:23,956 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 18:05:23,956 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 18:05:23,956 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 18:05:23,956 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 18:05:23,957 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 18:05:23,957 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 18:05:23,957 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-09-24 18:05:23,959 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 18:05:23,959 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-09-24 18:05:23,959 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 18:05:23,959 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 18:05:23,959 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 18:05:23,959 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 18:05:23,960 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 18:05:23,962 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-24 18:05:23,962 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-24 18:05:23,962 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 18:05:23,962 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 18:05:23,962 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 18:05:23,963 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 18:05:23,963 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 18:05:23,963 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 18:05:23,963 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-24 18:05:23,963 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 18:05:23,963 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 18:05:23,964 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 18:05:23,964 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 18:05:23,964 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 18:05:23,964 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:05:23,964 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:05:23,964 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 18:05:23,964 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 18:05:23,965 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 18:05:23,965 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 18:05:23,965 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 18:05:23,965 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 18:05:23,965 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 18:05:23,966 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 18:05:23,966 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 18:05:23,966 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 18:05:23,967 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 18:05:23,967 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 18:05:23,967 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 18:05:23,967 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:05:23,967 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 18:05:23,968 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 18:05:23,968 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 18:05:23,968 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-09-24 18:05:23,968 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 18:05:23,969 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 18:05:23,969 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 18:05:23,969 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 18:05:23,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 18:05:23,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 18:05:23,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 18:05:23,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 18:05:23,969 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 18:05:23,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 18:05:23,970 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 18:05:23,971 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 18:05:23,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 18:05:23,972 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 18:05:23,972 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 18:05:23,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 18:05:23,972 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 18:05:23,972 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 18:05:23,972 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 18:05:23,972 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 18:05:23,973 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-24 18:05:23,973 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 18:05:23,973 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 18:05:23,973 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-24 18:05:23,973 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 18:05:23,973 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 18:05:23,973 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-24 18:05:23,974 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-09-24 18:05:23,974 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 18:05:23,974 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-09-24 18:05:23,974 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 18:05:23,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:05:23,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 18:05:23,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:05:25,108 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:05:25,109 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 18:05:25,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:05:25 BoogieIcfgContainer [2020-09-24 18:05:25,117 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:05:25,118 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:05:25,118 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:05:25,122 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:05:25,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:05:23" (1/3) ... [2020-09-24 18:05:25,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7431f8c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:05:25, skipping insertion in model container [2020-09-24 18:05:25,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:05:23" (2/3) ... [2020-09-24 18:05:25,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7431f8c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:05:25, skipping insertion in model container [2020-09-24 18:05:25,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:05:25" (3/3) ... [2020-09-24 18:05:25,127 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product46.cil.c [2020-09-24 18:05:25,139 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:05:25,151 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:05:25,172 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:05:25,205 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:05:25,206 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:05:25,206 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:05:25,206 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:05:25,206 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:05:25,206 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:05:25,206 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:05:25,206 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:05:25,233 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states. [2020-09-24 18:05:25,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-24 18:05:25,252 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:05:25,253 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 18:05:25,254 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:05:25,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:05:25,263 INFO L82 PathProgramCache]: Analyzing trace with hash 2069436890, now seen corresponding path program 1 times [2020-09-24 18:05:25,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:05:25,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1824394000] [2020-09-24 18:05:25,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:05:25,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:05:25,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:05:25,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:05:27,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:05:28,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:05:30,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:05:30,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-24 18:05:30,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:05:30,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-24 18:05:30,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:05:30,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:05:30,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-24 18:05:30,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:05:30,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:05:31,172 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 18:05:31,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:05:31,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:05:31,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:05:31,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:05:31,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 18:05:31,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:05:31,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-09-24 18:05:31,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:05:31,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:05:31,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:05:31,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:05:31,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:05:31,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 18:05:31,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:05:31,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:05:31,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:05:31,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:05:31,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:05:31,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:05:31,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:05:31,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:05:31,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:05:31,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:05:31,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:05:31,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 18:05:31,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:05:31,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:05:31,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:05:31,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:05:31,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:05:31,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:05:31,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:05:31,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:05:31,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:05:31,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:05:31,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:05:31,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 18:05:31,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:05:31,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:05:31,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:05:31,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:05:31,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:05:31,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:05:31,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:05:31,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:05:31,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:05:31,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:05:31,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:05:31,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 18:05:31,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:05:31,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:05:31,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:05:31,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:05:31,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:05:31,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:05:31,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:05:31,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:05:31,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:05:31,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:05:31,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:05:31,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-24 18:05:31,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:05:31,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:05:31,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:05:31,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:05:31,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:05:31,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:05:31,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:05:31,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:05:31,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 18:05:31,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:05:31,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:05:31,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-24 18:05:31,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:05:31,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:05:31,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:05:31,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:05:31,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:05:31,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:05:31,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:05:31,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:05:31,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 18:05:31,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:05:31,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:05:31,681 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 18:05:31,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1824394000] [2020-09-24 18:05:31,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:05:31,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 18:05:31,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622630005] [2020-09-24 18:05:31,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 18:05:31,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:05:31,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 18:05:31,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 18:05:31,735 INFO L87 Difference]: Start difference. First operand 319 states. Second operand 3 states. [2020-09-24 18:05:33,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:05:33,907 INFO L93 Difference]: Finished difference Result 506 states and 600 transitions. [2020-09-24 18:05:33,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 18:05:33,910 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-09-24 18:05:33,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:05:33,932 INFO L225 Difference]: With dead ends: 506 [2020-09-24 18:05:33,932 INFO L226 Difference]: Without dead ends: 312 [2020-09-24 18:05:33,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 18:05:33,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-09-24 18:05:34,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 268. [2020-09-24 18:05:34,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-09-24 18:05:34,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 291 transitions. [2020-09-24 18:05:34,080 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 291 transitions. Word has length 142 [2020-09-24 18:05:34,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:05:34,082 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 291 transitions. [2020-09-24 18:05:34,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 18:05:34,082 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 291 transitions. [2020-09-24 18:05:34,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-24 18:05:34,096 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:05:34,099 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] [2020-09-24 18:05:34,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:05:34,100 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:05:34,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:05:34,101 INFO L82 PathProgramCache]: Analyzing trace with hash 777586008, now seen corresponding path program 1 times [2020-09-24 18:05:34,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:05:34,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238428640] [2020-09-24 18:05:34,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:05:34,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:05:34,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:05:34,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:05:35,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:05:36,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:05:39,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:05:39,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-24 18:05:39,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:05:39,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-09-24 18:05:39,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:05:39,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:05:39,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-24 18:05:39,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 18:05:39,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:05:39,638 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 18:05:39,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:05:39,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:05:39,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:05:39,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:05:39,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 18:05:39,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:05:39,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-09-24 18:05:39,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:05:39,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:05:39,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:05:39,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:05:39,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:05:39,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 18:05:39,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:05:39,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:05:39,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:05:39,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:05:39,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:05:39,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:05:39,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:05:39,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:05:39,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:05:39,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:05:39,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:05:39,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 18:05:39,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:05:39,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:05:39,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:05:39,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:05:39,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:05:39,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:05:39,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:05:39,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:05:39,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:05:39,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:05:39,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:05:39,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 18:05:39,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:05:39,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:05:39,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:05:39,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:05:39,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:05:39,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:05:39,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:05:39,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:05:39,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:05:39,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:05:39,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:05:39,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 18:05:39,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:05:39,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:05:39,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:05:39,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:05:39,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:05:39,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:05:39,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:05:39,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:05:39,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:05:39,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:05:39,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:05:39,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-24 18:05:39,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:05:39,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:05:39,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:05:39,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:05:39,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:05:39,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:05:39,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:05:39,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:05:39,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 18:05:39,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:05:39,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:05:39,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-24 18:05:39,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:05:39,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:05:39,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:05:39,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:05:39,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:05:39,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:05:39,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:05:39,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:05:39,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 18:05:39,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:05:39,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:05:39,900 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 18:05:39,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238428640] [2020-09-24 18:05:39,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:05:39,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:05:39,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094582155] [2020-09-24 18:05:39,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:05:39,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:05:39,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:05:39,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:05:39,905 INFO L87 Difference]: Start difference. First operand 268 states and 291 transitions. Second operand 4 states. [2020-09-24 18:05:40,528 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 18:05:41,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:05:41,594 INFO L93 Difference]: Finished difference Result 419 states and 471 transitions. [2020-09-24 18:05:41,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:05:41,596 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-09-24 18:05:41,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:05:41,605 INFO L225 Difference]: With dead ends: 419 [2020-09-24 18:05:41,605 INFO L226 Difference]: Without dead ends: 295 [2020-09-24 18:05:41,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:05:41,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-09-24 18:05:41,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 258. [2020-09-24 18:05:41,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-09-24 18:05:41,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 278 transitions. [2020-09-24 18:05:41,689 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 278 transitions. Word has length 143 [2020-09-24 18:05:41,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:05:41,691 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 278 transitions. [2020-09-24 18:05:41,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:05:41,692 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 278 transitions. [2020-09-24 18:05:41,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-24 18:05:41,695 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:05:41,695 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] [2020-09-24 18:05:41,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:05:41,695 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:05:41,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:05:41,697 INFO L82 PathProgramCache]: Analyzing trace with hash -956744923, now seen corresponding path program 1 times [2020-09-24 18:05:41,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:05:41,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1576348686] [2020-09-24 18:05:41,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:05:41,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:05:41,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:05:42,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:05:43,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:05:44,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:05:46,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:05:46,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-24 18:05:46,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:05:46,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-24 18:05:46,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:05:46,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:05:46,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-09-24 18:05:46,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:05:46,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:05:47,111 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 18:05:47,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:05:47,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:05:47,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:05:47,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:05:47,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 18:05:47,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:05:47,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-24 18:05:47,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:05:47,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:05:47,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:05:47,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:05:47,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:05:47,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 18:05:47,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:05:47,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:05:47,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:05:47,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:05:47,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:05:47,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:05:47,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:05:47,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:05:47,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:05:47,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:05:47,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:05:47,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 18:05:47,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:05:47,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:05:47,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:05:47,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:05:47,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:05:47,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:05:47,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:05:47,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:05:47,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:05:47,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:05:47,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:05:47,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 18:05:47,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:05:47,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:05:47,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:05:47,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:05:47,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:05:47,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:05:47,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:05:47,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:05:47,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:05:47,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:05:47,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:05:47,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 18:05:47,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:05:47,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:05:47,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:05:47,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:05:47,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:05:47,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:05:47,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:05:47,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:05:47,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:05:47,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:05:47,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:05:47,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-24 18:05:47,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:05:47,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:05:47,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:05:47,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 18:05:47,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:05:47,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:05:47,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:05:47,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:05:47,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:05:47,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 18:05:47,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:05:47,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-24 18:05:47,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:05:47,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:05:47,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:05:47,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:05:47,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:05:47,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:05:47,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:05:47,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:05:47,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 18:05:47,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:05:47,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-24 18:05:47,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-24 18:05:47,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:05:47,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:05:47,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:05:47,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:05:47,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:05:47,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:05:47,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:05:47,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:05:47,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 18:05:47,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:05:47,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 18:05:47,368 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 18:05:47,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1576348686] [2020-09-24 18:05:47,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:05:47,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:05:47,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601087862] [2020-09-24 18:05:47,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:05:47,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:05:47,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:05:47,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:05:47,374 INFO L87 Difference]: Start difference. First operand 258 states and 278 transitions. Second operand 5 states. [2020-09-24 18:05:47,848 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 18:05:48,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:05:48,971 INFO L93 Difference]: Finished difference Result 465 states and 533 transitions. [2020-09-24 18:05:48,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 18:05:48,972 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-09-24 18:05:48,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:05:48,976 INFO L225 Difference]: With dead ends: 465 [2020-09-24 18:05:48,977 INFO L226 Difference]: Without dead ends: 317 [2020-09-24 18:05:48,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:05:48,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-09-24 18:05:49,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 258. [2020-09-24 18:05:49,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-09-24 18:05:49,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 277 transitions. [2020-09-24 18:05:49,020 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 277 transitions. Word has length 156 [2020-09-24 18:05:49,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:05:49,021 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 277 transitions. [2020-09-24 18:05:49,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:05:49,021 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 277 transitions. [2020-09-24 18:05:49,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-24 18:05:49,023 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:05:49,024 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:05:49,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:05:49,024 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:05:49,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:05:49,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1329661324, now seen corresponding path program 1 times [2020-09-24 18:05:49,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:05:49,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [938084925] [2020-09-24 18:05:49,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:05:49,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:05:49,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:05:49,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:05:49,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:05:51,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:05:52,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:05:52,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:05:52,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:05:54,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:05:54,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-24 18:05:54,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:05:54,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-09-24 18:05:54,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:05:54,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:05:54,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-09-24 18:05:54,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:05:54,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:05:54,382 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 18:05:54,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:05:54,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:05:54,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:05:54,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:05:54,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 18:05:54,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:05:54,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-24 18:05:54,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:05:54,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:05:54,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:05:54,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:05:54,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:05:54,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 18:05:54,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:05:54,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:05:54,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:05:54,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:05:54,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:05:54,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:05:54,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:05:54,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:05:54,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:05:54,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:05:54,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:05:54,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 18:05:54,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:05:54,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:05:54,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:05:54,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:05:54,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:05:54,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:05:54,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:05:54,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:05:54,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:05:54,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:05:54,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:05:54,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 18:05:54,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:05:54,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:05:54,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:05:54,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:05:54,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:05:54,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:05:54,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:05:54,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:05:54,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:05:54,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:05:54,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:05:54,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 18:05:54,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:05:54,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:05:54,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:05:54,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:05:54,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:05:54,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:05:54,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:05:54,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:05:54,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:05:54,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:05:54,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:05:54,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-24 18:05:54,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:05:54,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:05:54,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:05:54,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 18:05:54,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:05:54,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:05:54,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:05:54,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:05:54,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:05:54,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:05:54,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:05:54,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-24 18:05:54,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:05:54,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:05:54,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:05:54,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 18:05:54,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:05:54,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:05:54,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:05:54,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:05:54,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 18:05:54,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:05:54,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:05:54,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:05:54,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:05:54,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:05:54,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:05:54,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:05:54,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:05:54,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 18:05:54,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:05:54,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:05:54,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:05:54,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 18:05:54,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:05:54,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:05:54,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:05:54,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:05:54,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:05:54,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:05:54,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:05:54,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:05:54,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:05:54,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:05:54,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:05:54,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 18:05:54,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:05:54,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-09-24 18:05:54,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:05:54,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:05:54,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:05:54,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:05:54,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:05:54,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:05:54,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:05:54,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:05:54,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 18:05:54,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:05:54,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:05:54,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-09-24 18:05:54,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:05:54,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:05:54,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:05:54,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:05:54,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:05:54,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:05:54,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:05:54,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:05:54,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 18:05:54,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:05:54,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:05:54,771 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 18:05:54,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [938084925] [2020-09-24 18:05:54,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:05:54,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 18:05:54,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182079059] [2020-09-24 18:05:54,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:05:54,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:05:54,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:05:54,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:05:54,775 INFO L87 Difference]: Start difference. First operand 258 states and 277 transitions. Second operand 7 states. [2020-09-24 18:05:55,345 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 18:05:57,025 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 18:05:58,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:05:58,003 INFO L93 Difference]: Finished difference Result 658 states and 775 transitions. [2020-09-24 18:05:58,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 18:05:58,003 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 169 [2020-09-24 18:05:58,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:05:58,010 INFO L225 Difference]: With dead ends: 658 [2020-09-24 18:05:58,010 INFO L226 Difference]: Without dead ends: 510 [2020-09-24 18:05:58,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-09-24 18:05:58,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2020-09-24 18:05:58,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 383. [2020-09-24 18:05:58,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2020-09-24 18:05:58,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 410 transitions. [2020-09-24 18:05:58,074 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 410 transitions. Word has length 169 [2020-09-24 18:05:58,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:05:58,075 INFO L479 AbstractCegarLoop]: Abstraction has 383 states and 410 transitions. [2020-09-24 18:05:58,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:05:58,075 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 410 transitions. [2020-09-24 18:05:58,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-24 18:05:58,078 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:05:58,078 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:05:58,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:05:58,078 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:05:58,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:05:58,079 INFO L82 PathProgramCache]: Analyzing trace with hash -828711732, now seen corresponding path program 1 times [2020-09-24 18:05:58,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:05:58,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [396661165] [2020-09-24 18:05:58,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:05:58,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:05:58,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:05:59,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:05:59,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:05:59,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:06:03,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:06:03,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-09-24 18:06:03,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:06:03,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 18:06:03,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:06:03,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:06:03,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-09-24 18:06:03,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 18:06:03,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:06:03,501 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 18:06:03,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:06:03,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:06:03,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:06:03,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:06:03,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 18:06:03,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:06:03,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-24 18:06:03,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:06:03,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:06:03,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:06:03,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:06:03,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:06:03,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 18:06:03,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:06:03,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:06:03,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:06:03,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:06:03,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:06:03,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:06:03,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:06:03,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:06:03,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:06:03,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:06:03,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:06:03,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 18:06:03,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:06:03,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:06:03,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:06:03,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:06:03,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:06:03,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:06:03,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:06:03,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:06:03,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:06:03,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:06:03,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:06:03,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 18:06:03,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:06:03,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:06:03,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:06:03,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:06:03,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:06:03,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:06:03,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:06:03,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:06:03,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:06:03,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:06:03,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:06:03,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 18:06:03,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:06:03,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:06:03,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:06:03,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:06:03,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:06:03,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:06:03,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:06:03,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:06:03,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:06:03,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:06:03,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:06:03,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-24 18:06:03,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:06:03,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:06:03,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:06:03,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 18:06:03,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:06:03,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:06:03,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:06:03,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:06:03,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:06:03,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:06:03,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:06:03,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-24 18:06:03,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:06:03,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:06:03,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:06:03,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:06:03,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-24 18:06:03,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:06:03,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-24 18:06:03,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:06:03,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:06:03,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:06:03,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:06:03,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:06:03,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:06:03,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:06:03,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:06:03,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:06:03,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 18:06:03,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:06:03,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 18:06:03,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:06:03,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:06:03,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:06:03,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 18:06:03,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:06:03,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:06:03,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:06:03,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:06:03,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:06:03,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:06:03,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:06:03,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 18:06:03,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:06:03,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:06:03,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:06:03,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 18:06:03,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:06:03,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:06:03,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:06:03,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:06:03,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:06:03,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:06:03,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:06:03,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:06:03,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:06:03,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:06:03,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:06:03,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:06:03,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:06:03,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 18:06:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:06:03,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:06:03,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:06:03,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:06:03,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:06:03,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:06:03,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:06:03,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:06:03,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:06:03,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 18:06:03,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:06:03,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-09-24 18:06:03,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:06:03,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:06:04,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:06:04,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:06:04,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:06:04,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:06:04,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:06:04,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:06:04,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:06:04,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:06:04,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:06:04,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-09-24 18:06:04,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:06:04,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:06:04,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:06:04,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:06:04,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:06:04,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:06:04,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:06:04,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:06:04,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:06:04,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:06:04,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:06:04,126 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 18:06:04,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [396661165] [2020-09-24 18:06:04,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:06:04,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 18:06:04,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512047447] [2020-09-24 18:06:04,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 18:06:04,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:06:04,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 18:06:04,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-24 18:06:04,130 INFO L87 Difference]: Start difference. First operand 383 states and 410 transitions. Second operand 10 states. [2020-09-24 18:06:04,698 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 18:06:06,142 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 18:06:06,472 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 18:06:06,835 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 188