/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=1000 --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_spec1_product39.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:03:01,895 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:03:01,899 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:03:01,946 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:03:01,948 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:03:01,959 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:03:01,962 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:03:01,966 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:03:01,970 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:03:01,974 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:03:01,975 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:03:01,976 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:03:01,977 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:03:01,980 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:03:01,984 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:03:01,986 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:03:01,988 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:03:01,989 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:03:01,991 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:03:02,003 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:03:02,005 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:03:02,007 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:03:02,008 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:03:02,009 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:03:02,012 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:03:02,012 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:03:02,013 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:03:02,016 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:03:02,017 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:03:02,018 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:03:02,018 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:03:02,019 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:03:02,020 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:03:02,021 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:03:02,022 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:03:02,023 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:03:02,024 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:03:02,024 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:03:02,024 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:03:02,026 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:03:02,027 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:03:02,028 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 19:03:02,080 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:03:02,081 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:03:02,082 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:03:02,083 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:03:02,083 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:03:02,083 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:03:02,084 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:03:02,084 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:03:02,084 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:03:02,084 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:03:02,086 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:03:02,086 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:03:02,086 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:03:02,087 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:03:02,087 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:03:02,087 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:03:02,087 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:03:02,087 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:03:02,088 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:03:02,088 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:03:02,088 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:03:02,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:03:02,088 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:03:02,089 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:03:02,089 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:03:02,089 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:03:02,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:03:02,089 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:03:02,090 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:03:02,090 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=1000;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=1000;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=1000;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=1000;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:03:02,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:03:02,565 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:03:02,572 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:03:02,577 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:03:02,577 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:03:02,578 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product39.cil.c [2020-09-24 19:03:02,653 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/33251e7b6/7aee6f7c14be44b29916195d64b3a515/FLAG992b69ad8 [2020-09-24 19:03:03,239 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:03:03,240 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product39.cil.c [2020-09-24 19:03:03,267 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/33251e7b6/7aee6f7c14be44b29916195d64b3a515/FLAG992b69ad8 [2020-09-24 19:03:03,520 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/33251e7b6/7aee6f7c14be44b29916195d64b3a515 [2020-09-24 19:03:03,533 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:03:03,539 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:03:03,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:03:03,541 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:03:03,544 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:03:03,545 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:03:03" (1/1) ... [2020-09-24 19:03:03,549 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5341aa08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:03:03, skipping insertion in model container [2020-09-24 19:03:03,549 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:03:03" (1/1) ... [2020-09-24 19:03:03,559 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:03:03,615 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:03:04,119 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:03:04,136 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:03:04,255 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:03:04,299 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:03:04,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:03:04 WrapperNode [2020-09-24 19:03:04,300 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:03:04,301 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:03:04,301 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:03:04,302 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:03:04,316 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:03:04" (1/1) ... [2020-09-24 19:03:04,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:03:04" (1/1) ... [2020-09-24 19:03:04,338 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:03:04" (1/1) ... [2020-09-24 19:03:04,338 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:03:04" (1/1) ... [2020-09-24 19:03:04,379 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:03:04" (1/1) ... [2020-09-24 19:03:04,391 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:03:04" (1/1) ... [2020-09-24 19:03:04,396 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:03:04" (1/1) ... [2020-09-24 19:03:04,405 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:03:04,406 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:03:04,406 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:03:04,406 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:03:04,408 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:03:04" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:03:04,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:03:04,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:03:04,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 19:03:04,522 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 19:03:04,522 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 19:03:04,522 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 19:03:04,523 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 19:03:04,523 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 19:03:04,524 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 19:03:04,524 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-09-24 19:03:04,524 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 19:03:04,524 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 19:03:04,524 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 19:03:04,525 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 19:03:04,525 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 19:03:04,526 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 19:03:04,526 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 19:03:04,526 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-24 19:03:04,526 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 19:03:04,527 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 19:03:04,527 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 19:03:04,527 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 19:03:04,528 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 19:03:04,528 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 19:03:04,528 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 19:03:04,529 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 19:03:04,529 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 19:03:04,529 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 19:03:04,529 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-24 19:03:04,530 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-24 19:03:04,530 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 19:03:04,530 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 19:03:04,530 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 19:03:04,530 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 19:03:04,530 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 19:03:04,531 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 19:03:04,531 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 19:03:04,531 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 19:03:04,531 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:03:04,531 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:03:04,531 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:03:04,532 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 19:03:04,532 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 19:03:04,532 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 19:03:04,532 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 19:03:04,532 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 19:03:04,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 19:03:04,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 19:03:04,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 19:03:04,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 19:03:04,533 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 19:03:04,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 19:03:04,534 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 19:03:04,534 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 19:03:04,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 19:03:04,534 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 19:03:04,535 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 19:03:04,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 19:03:04,535 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 19:03:04,535 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 19:03:04,535 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 19:03:04,535 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 19:03:04,536 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-09-24 19:03:04,536 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 19:03:04,536 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 19:03:04,536 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 19:03:04,536 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 19:03:04,536 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 19:03:04,537 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-24 19:03:04,537 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-24 19:03:04,538 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 19:03:04,538 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 19:03:04,539 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 19:03:04,540 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 19:03:04,540 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 19:03:04,540 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 19:03:04,540 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 19:03:04,540 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 19:03:04,540 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-24 19:03:04,541 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 19:03:04,541 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 19:03:04,541 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 19:03:04,541 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 19:03:04,542 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 19:03:04,542 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 19:03:04,542 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 19:03:04,542 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 19:03:04,543 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 19:03:04,543 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:03:04,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:03:04,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 19:03:04,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:03:05,845 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:03:05,846 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 19:03:05,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:03:05 BoogieIcfgContainer [2020-09-24 19:03:05,854 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:03:05,856 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:03:05,856 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:03:05,860 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:03:05,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:03:03" (1/3) ... [2020-09-24 19:03:05,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@622b2c98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:03:05, skipping insertion in model container [2020-09-24 19:03:05,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:03:04" (2/3) ... [2020-09-24 19:03:05,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@622b2c98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:03:05, skipping insertion in model container [2020-09-24 19:03:05,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:03:05" (3/3) ... [2020-09-24 19:03:05,865 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product39.cil.c [2020-09-24 19:03:05,878 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:03:05,891 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:03:05,918 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:03:05,959 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:03:05,959 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:03:05,959 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:03:05,959 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:03:05,959 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:03:05,960 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:03:05,960 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:03:05,960 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:03:05,994 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states. [2020-09-24 19:03:06,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-24 19:03:06,014 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:03:06,016 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 19:03:06,016 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:03:06,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:03:06,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1299916906, now seen corresponding path program 1 times [2020-09-24 19:03:06,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:03:06,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [75602628] [2020-09-24 19:03:06,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:03:06,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:06,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:06,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:07,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:07,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-24 19:03:07,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:03:07,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1062 [2020-09-24 19:03:07,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:07,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:07,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-24 19:03:07,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:07,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 19:03:07,875 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 19:03:07,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:03:07,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:07,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:08,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:08,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 19:03:08,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:08,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-09-24 19:03:08,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:08,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:08,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:08,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:08,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:03:08,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 19:03:08,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:08,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:08,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:08,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:03:08,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:08,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:03:08,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:08,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:08,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:08,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:08,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:03:08,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 19:03:08,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:08,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:08,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:08,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:03:08,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:08,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:03:08,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:08,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:08,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:08,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:08,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:03:08,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 19:03:08,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:08,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:08,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:08,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:03:08,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:08,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 19:03:08,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:08,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:08,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:08,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:08,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:08,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 19:03:08,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:08,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:08,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:08,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:03:08,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:08,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:03:08,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:08,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:08,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:08,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:08,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:03:08,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-24 19:03:08,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:08,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:08,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:08,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:03:08,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:08,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:03:08,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:08,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:08,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 19:03:08,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:08,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:08,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-24 19:03:08,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:08,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:08,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:08,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:03:08,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:08,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:03:08,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:08,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:08,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 19:03:08,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:08,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:03:08,255 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 19:03:08,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [75602628] [2020-09-24 19:03:08,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:03:08,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 19:03:08,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654331632] [2020-09-24 19:03:08,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 19:03:08,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:03:08,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 19:03:08,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 19:03:08,291 INFO L87 Difference]: Start difference. First operand 307 states. Second operand 3 states. [2020-09-24 19:03:09,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:03:09,718 INFO L93 Difference]: Finished difference Result 481 states and 577 transitions. [2020-09-24 19:03:09,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 19:03:09,720 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-09-24 19:03:09,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:03:09,739 INFO L225 Difference]: With dead ends: 481 [2020-09-24 19:03:09,739 INFO L226 Difference]: Without dead ends: 299 [2020-09-24 19:03:09,745 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 19:03:09,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-09-24 19:03:09,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 256. [2020-09-24 19:03:09,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-09-24 19:03:09,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 280 transitions. [2020-09-24 19:03:09,854 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 280 transitions. Word has length 142 [2020-09-24 19:03:09,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:03:09,856 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 280 transitions. [2020-09-24 19:03:09,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 19:03:09,856 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 280 transitions. [2020-09-24 19:03:09,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-24 19:03:09,860 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:03:09,861 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 19:03:09,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:03:09,861 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:03:09,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:03:09,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1066330747, now seen corresponding path program 1 times [2020-09-24 19:03:09,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:03:09,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1238147022] [2020-09-24 19:03:09,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:03:09,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:09,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:10,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:10,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:10,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-24 19:03:10,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:03:10,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1028 [2020-09-24 19:03:10,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:10,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:03:10,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-24 19:03:10,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 19:03:10,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-24 19:03:11,352 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 19:03:11,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:03:11,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:11,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:11,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:11,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 19:03:11,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:11,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-09-24 19:03:11,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:11,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:11,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:11,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:11,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:11,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 19:03:11,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:11,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:11,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:11,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:03:11,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:11,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:03:11,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:11,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:11,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:11,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:11,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:11,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 19:03:11,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:11,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:11,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:11,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:03:11,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:11,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:03:11,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:11,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:11,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:11,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:11,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:11,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 19:03:11,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:11,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:11,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:11,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:03:11,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:11,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 19:03:11,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:11,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:11,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:11,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:11,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:11,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 19:03:11,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:11,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:11,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:11,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:03:11,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:11,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:03:11,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:11,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:11,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:11,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:11,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:11,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-24 19:03:11,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:11,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:11,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:11,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:03:11,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:11,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:03:11,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:11,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:11,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 19:03:11,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:11,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:11,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-24 19:03:11,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:11,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:11,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:11,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:03:11,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:11,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:03:11,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:11,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:11,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 19:03:11,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:11,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:11,649 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 19:03:11,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1238147022] [2020-09-24 19:03:11,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:03:11,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 19:03:11,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677228432] [2020-09-24 19:03:11,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 19:03:11,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:03:11,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 19:03:11,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:03:11,655 INFO L87 Difference]: Start difference. First operand 256 states and 280 transitions. Second operand 4 states. [2020-09-24 19:03:12,400 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 19:03:13,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:03:13,403 INFO L93 Difference]: Finished difference Result 392 states and 444 transitions. [2020-09-24 19:03:13,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 19:03:13,404 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-09-24 19:03:13,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:03:13,409 INFO L225 Difference]: With dead ends: 392 [2020-09-24 19:03:13,409 INFO L226 Difference]: Without dead ends: 282 [2020-09-24 19:03:13,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:03:13,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-09-24 19:03:13,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 246. [2020-09-24 19:03:13,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-09-24 19:03:13,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 267 transitions. [2020-09-24 19:03:13,454 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 267 transitions. Word has length 143 [2020-09-24 19:03:13,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:03:13,454 INFO L479 AbstractCegarLoop]: Abstraction has 246 states and 267 transitions. [2020-09-24 19:03:13,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 19:03:13,455 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 267 transitions. [2020-09-24 19:03:13,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-24 19:03:13,457 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:03:13,457 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] [2020-09-24 19:03:13,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:03:13,458 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:03:13,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:03:13,458 INFO L82 PathProgramCache]: Analyzing trace with hash 449926668, now seen corresponding path program 1 times [2020-09-24 19:03:13,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:03:13,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [447639730] [2020-09-24 19:03:13,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:03:13,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:13,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:14,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:14,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:14,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-24 19:03:14,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:03:14,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1040 [2020-09-24 19:03:14,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:14,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:03:14,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-09-24 19:03:14,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 19:03:14,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:14,934 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 19:03:14,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:03:14,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:14,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:15,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:15,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 19:03:15,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:15,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-24 19:03:15,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:15,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:15,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:15,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:15,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:15,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 19:03:15,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:15,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:15,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:15,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:03:15,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:15,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:03:15,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:15,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:15,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:15,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:15,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:15,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 19:03:15,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:15,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:15,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:15,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:03:15,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:15,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:03:15,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:15,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:15,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:15,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:15,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:15,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 19:03:15,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:15,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:15,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:15,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:03:15,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:15,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:03:15,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:15,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:15,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:15,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:15,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:15,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 19:03:15,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:15,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:15,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:15,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:03:15,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:15,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:03:15,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:15,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:15,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:15,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:15,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:15,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-24 19:03:15,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:15,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:15,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:15,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:03:15,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:15,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:03:15,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:15,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:03:15,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:15,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 19:03:15,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:15,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-09-24 19:03:15,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:15,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:15,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:15,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:03:15,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:15,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:03:15,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:15,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:03:15,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:15,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 19:03:15,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:03:15,214 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 19:03:15,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [447639730] [2020-09-24 19:03:15,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:03:15,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 19:03:15,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804358629] [2020-09-24 19:03:15,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:03:15,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:03:15,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:03:15,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:03:15,217 INFO L87 Difference]: Start difference. First operand 246 states and 267 transitions. Second operand 8 states. [2020-09-24 19:03:15,743 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 19:03:16,841 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 19:03:17,163 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 19:03:17,494 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 19:03:17,863 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 19:03:18,183 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 19:03:18,807 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 19:03:19,120 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 19:03:19,493 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 19:03:20,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:03:20,304 INFO L93 Difference]: Finished difference Result 501 states and 589 transitions. [2020-09-24 19:03:20,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 19:03:20,305 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 152 [2020-09-24 19:03:20,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:03:20,309 INFO L225 Difference]: With dead ends: 501 [2020-09-24 19:03:20,309 INFO L226 Difference]: Without dead ends: 365 [2020-09-24 19:03:20,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2020-09-24 19:03:20,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2020-09-24 19:03:20,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 334. [2020-09-24 19:03:20,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2020-09-24 19:03:20,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 375 transitions. [2020-09-24 19:03:20,396 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 375 transitions. Word has length 152 [2020-09-24 19:03:20,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:03:20,398 INFO L479 AbstractCegarLoop]: Abstraction has 334 states and 375 transitions. [2020-09-24 19:03:20,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:03:20,398 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 375 transitions. [2020-09-24 19:03:20,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-24 19:03:20,406 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:03:20,406 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] [2020-09-24 19:03:20,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:03:20,407 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:03:20,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:03:20,407 INFO L82 PathProgramCache]: Analyzing trace with hash -2087428370, now seen corresponding path program 1 times [2020-09-24 19:03:20,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:03:20,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719842952] [2020-09-24 19:03:20,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:03:20,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:20,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:21,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:21,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:21,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-09-24 19:03:21,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:03:21,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1031 [2020-09-24 19:03:21,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:21,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:03:21,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-09-24 19:03:21,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 19:03:21,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:03:21,839 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 19:03:21,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:03:21,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:21,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:21,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:21,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 19:03:21,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:21,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-24 19:03:21,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:21,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:21,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:21,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:21,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:21,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 19:03:21,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:21,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:21,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:21,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:03:21,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:21,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:03:21,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:21,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:21,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:21,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:21,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:21,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 19:03:21,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:22,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:22,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:22,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:03:22,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:22,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:03:22,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:22,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:22,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:22,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:22,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:22,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 19:03:22,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:22,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:22,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:22,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:03:22,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:22,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:03:22,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:22,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:22,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:22,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:22,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:03:22,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 19:03:22,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:22,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:22,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:22,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:03:22,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:22,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:03:22,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:22,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:22,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:22,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:22,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:22,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-24 19:03:22,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:22,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:22,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:22,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 19:03:22,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:22,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-24 19:03:22,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:22,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:03:22,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-24 19:03:22,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 19:03:22,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:22,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:03:22,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:22,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:22,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:22,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 19:03:22,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:22,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-24 19:03:22,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:22,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:03:22,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 19:03:22,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 19:03:22,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:03:22,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:03:22,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:22,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:22,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:22,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:03:22,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:22,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-24 19:03:22,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:22,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:03:22,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:22,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 19:03:22,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:22,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:03:22,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:22,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:22,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:22,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:03:22,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:22,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:03:22,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:22,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:22,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:22,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:22,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:22,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 19:03:22,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:22,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:22,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:22,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 19:03:22,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:22,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:03:22,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:22,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:22,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 19:03:22,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:22,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:22,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-09-24 19:03:22,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:22,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:22,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:22,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:03:22,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:22,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:03:22,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:22,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:22,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 19:03:22,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:22,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:22,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-24 19:03:22,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:22,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:22,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:22,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:03:22,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:22,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:03:22,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:22,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:22,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 19:03:22,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:22,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:22,400 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 19:03:22,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [719842952] [2020-09-24 19:03:22,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:03:22,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 19:03:22,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521563656] [2020-09-24 19:03:22,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 19:03:22,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:03:22,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 19:03:22,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 19:03:22,404 INFO L87 Difference]: Start difference. First operand 334 states and 375 transitions. Second operand 9 states. [2020-09-24 19:03:23,937 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 19:03:24,255 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 19:03:24,580 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 19:03:24,866 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 19:03:25,188 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 19:03:25,483 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 19:03:26,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:03:26,290 INFO L93 Difference]: Finished difference Result 623 states and 737 transitions. [2020-09-24 19:03:26,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 19:03:26,293 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 190 [2020-09-24 19:03:26,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:03:26,297 INFO L225 Difference]: With dead ends: 623 [2020-09-24 19:03:26,297 INFO L226 Difference]: Without dead ends: 399 [2020-09-24 19:03:26,299 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-09-24 19:03:26,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2020-09-24 19:03:26,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 345. [2020-09-24 19:03:26,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-09-24 19:03:26,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 386 transitions. [2020-09-24 19:03:26,345 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 386 transitions. Word has length 190 [2020-09-24 19:03:26,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:03:26,346 INFO L479 AbstractCegarLoop]: Abstraction has 345 states and 386 transitions. [2020-09-24 19:03:26,346 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 19:03:26,346 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 386 transitions. [2020-09-24 19:03:26,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-24 19:03:26,349 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:03:26,349 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] [2020-09-24 19:03:26,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:03:26,350 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:03:26,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:03:26,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1233668750, now seen corresponding path program 1 times [2020-09-24 19:03:26,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:03:26,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159261371] [2020-09-24 19:03:26,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:03:26,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:26,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:26,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:27,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:27,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-09-24 19:03:27,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:03:27,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1010 [2020-09-24 19:03:27,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:27,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:03:27,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 169 [2020-09-24 19:03:27,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:03:27,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:27,722 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 19:03:27,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:03:27,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:27,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:27,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:27,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 19:03:27,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:27,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-24 19:03:27,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:27,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:27,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:27,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:27,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:27,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 19:03:27,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:27,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:27,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:27,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:03:27,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:27,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:03:27,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:27,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:27,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:27,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:27,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:27,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 19:03:27,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:27,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:27,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:27,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:03:27,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:27,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:03:27,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:27,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:27,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:27,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:27,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:27,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 19:03:27,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:27,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:27,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:27,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:03:27,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:27,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:03:27,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:27,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:27,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:27,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:27,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:27,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 19:03:27,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:27,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:27,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:27,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:03:27,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:27,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:03:27,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:27,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:27,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:27,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:27,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:27,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-24 19:03:27,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:27,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:27,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:27,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 19:03:27,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:27,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-24 19:03:27,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:27,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:03:27,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 19:03:27,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:03:27,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:27,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:03:28,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:28,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:28,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:28,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 19:03:28,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:28,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-24 19:03:28,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:28,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:03:28,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 19:03:28,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:03:28,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:28,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:03:28,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:28,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:28,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:28,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:03:28,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:28,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 19:03:28,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:28,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:03:28,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 19:03:28,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:03:28,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:03:28,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:03:28,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:28,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:28,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:28,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:03:28,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:28,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:03:28,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:28,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:03:28,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:28,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 19:03:28,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:03:28,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 19:03:28,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:28,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:28,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:28,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 19:03:28,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:28,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:03:28,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:28,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:28,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 19:03:28,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:28,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:03:28,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-09-24 19:03:28,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:28,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:28,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:28,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:03:28,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:28,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:03:28,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:28,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:28,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 19:03:28,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:28,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:28,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-24 19:03:28,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:28,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:28,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:28,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:03:28,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:28,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:03:28,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:28,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:28,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 19:03:28,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:28,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:03:28,283 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 19:03:28,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159261371] [2020-09-24 19:03:28,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:03:28,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 19:03:28,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093007678] [2020-09-24 19:03:28,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:03:28,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:03:28,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:03:28,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:03:28,286 INFO L87 Difference]: Start difference. First operand 345 states and 386 transitions. Second operand 8 states. [2020-09-24 19:03:29,369 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 19:03:29,662 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 19:03:29,995 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 19:03:30,331 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 19:03:30,666 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 19:03:31,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:03:31,491 INFO L93 Difference]: Finished difference Result 640 states and 765 transitions. [2020-09-24 19:03:31,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 19:03:31,495 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 190 [2020-09-24 19:03:31,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:03:31,498 INFO L225 Difference]: With dead ends: 640 [2020-09-24 19:03:31,498 INFO L226 Difference]: Without dead ends: 405 [2020-09-24 19:03:31,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-09-24 19:03:31,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2020-09-24 19:03:31,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 351. [2020-09-24 19:03:31,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2020-09-24 19:03:31,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 392 transitions. [2020-09-24 19:03:31,544 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 392 transitions. Word has length 190 [2020-09-24 19:03:31,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:03:31,544 INFO L479 AbstractCegarLoop]: Abstraction has 351 states and 392 transitions. [2020-09-24 19:03:31,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:03:31,544 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 392 transitions. [2020-09-24 19:03:31,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-24 19:03:31,547 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:03:31,547 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] [2020-09-24 19:03:31,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:03:31,548 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:03:31,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:03:31,548 INFO L82 PathProgramCache]: Analyzing trace with hash -406625231, now seen corresponding path program 1 times [2020-09-24 19:03:31,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:03:31,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712108189] [2020-09-24 19:03:31,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:03:31,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:31,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:32,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:32,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:32,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-09-24 19:03:32,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:03:32,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1006 [2020-09-24 19:03:32,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:32,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 19:03:32,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-24 19:03:32,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-24 19:03:32,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:32,975 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 19:03:32,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:03:33,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:33,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:33,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:33,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 19:03:33,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:33,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-09-24 19:03:33,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:33,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:03:33,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:33,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 19:03:33,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:33,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 19:03:33,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:33,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:33,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:33,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:03:33,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:33,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:03:33,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:33,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:03:33,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:33,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 19:03:33,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:03:33,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 19:03:33,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:33,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:33,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:33,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:03:33,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:33,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:03:33,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:33,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:03:33,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:33,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 19:03:33,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:03:33,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 19:03:33,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:33,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:33,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:33,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:03:33,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:33,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:03:33,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:33,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:03:33,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:33,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 19:03:33,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:33,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 19:03:33,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:33,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:33,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:33,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:03:33,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:33,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:03:33,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:33,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:03:33,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:33,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 19:03:33,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:33,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-24 19:03:33,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:33,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:33,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:33,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 19:03:33,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:33,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-24 19:03:33,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:33,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:03:33,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 19:03:33,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 19:03:33,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:03:33,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:03:33,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:33,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:33,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:33,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 19:03:33,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:33,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 19:03:33,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:33,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:03:33,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:33,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 19:03:33,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:03:33,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:03:33,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:33,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:33,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:33,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:03:33,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:33,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 19:03:33,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:33,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:03:33,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:33,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 19:03:33,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:03:33,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:03:33,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:33,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:33,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:33,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:03:33,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:33,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:03:33,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:33,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:03:33,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:33,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 19:03:33,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:03:33,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 19:03:33,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:33,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:33,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:33,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 19:03:33,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:33,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 19:03:33,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:33,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:03:33,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:33,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 19:03:33,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:03:33,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-09-24 19:03:33,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:33,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:33,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:33,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:03:33,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:33,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:03:33,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:33,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:33,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 19:03:33,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:33,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:03:33,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-24 19:03:33,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:33,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:33,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:33,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:03:33,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:33,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:03:33,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:33,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:33,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 19:03:33,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:33,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:03:33,796 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 19:03:33,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712108189] [2020-09-24 19:03:33,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:03:33,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 19:03:33,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353009699] [2020-09-24 19:03:33,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 19:03:33,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:03:33,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 19:03:33,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:03:33,807 INFO L87 Difference]: Start difference. First operand 351 states and 392 transitions. Second operand 6 states. [2020-09-24 19:03:34,397 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 19:03:35,486 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 19:03:37,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:03:37,803 INFO L93 Difference]: Finished difference Result 1029 states and 1274 transitions. [2020-09-24 19:03:37,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 19:03:37,804 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 190 [2020-09-24 19:03:37,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:03:37,809 INFO L225 Difference]: With dead ends: 1029 [2020-09-24 19:03:37,809 INFO L226 Difference]: Without dead ends: 788 [2020-09-24 19:03:37,811 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-24 19:03:37,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-09-24 19:03:37,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 693. [2020-09-24 19:03:37,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2020-09-24 19:03:37,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 813 transitions. [2020-09-24 19:03:37,907 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 813 transitions. Word has length 190 [2020-09-24 19:03:37,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:03:37,907 INFO L479 AbstractCegarLoop]: Abstraction has 693 states and 813 transitions. [2020-09-24 19:03:37,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 19:03:37,908 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 813 transitions. [2020-09-24 19:03:37,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-24 19:03:37,911 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:03:37,911 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, 1, 1] [2020-09-24 19:03:37,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:03:37,912 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:03:37,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:03:37,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1822677602, now seen corresponding path program 1 times [2020-09-24 19:03:37,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:03:37,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1820848091] [2020-09-24 19:03:37,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:03:37,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:38,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:38,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:38,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-09-24 19:03:38,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:38,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1024 [2020-09-24 19:03:38,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:38,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 19:03:38,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-24 19:03:38,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-24 19:03:38,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:39,366 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 19:03:39,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:03:39,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:39,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:39,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:39,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 19:03:39,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:39,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-09-24 19:03:39,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:39,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:03:39,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:39,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 19:03:39,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:39,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 19:03:39,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:39,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:39,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:39,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:03:39,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:39,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:03:39,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:39,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:03:39,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:39,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 19:03:39,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:39,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 19:03:39,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:39,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:39,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:39,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:03:39,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:39,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 19:03:39,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:39,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:03:39,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:39,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 19:03:39,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:39,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 19:03:39,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:39,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:39,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:39,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:03:39,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:39,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:03:39,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:39,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:03:39,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:39,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 19:03:39,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:39,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 19:03:39,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:39,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:39,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:39,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:03:39,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:39,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:03:39,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:39,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:03:39,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:39,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 19:03:39,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:39,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-24 19:03:39,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:39,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:39,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:39,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:03:39,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:39,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 19:03:39,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:39,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:03:39,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:39,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:03:39,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:39,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-24 19:03:39,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:39,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:39,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:39,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 19:03:39,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:39,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 19:03:39,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:39,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:03:39,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:39,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-24 19:03:39,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:39,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:03:39,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:39,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:39,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:39,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 19:03:39,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:39,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 19:03:39,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:39,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:39,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:39,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:39,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:39,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:03:39,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:39,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:39,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:39,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:03:39,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:39,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:03:39,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:39,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:39,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:39,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:39,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:39,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:03:39,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:39,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:39,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:39,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:03:39,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:39,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:03:39,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:39,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:39,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:39,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:39,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:39,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 19:03:39,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:39,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:39,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:39,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 19:03:39,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:39,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:03:39,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:39,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:39,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:39,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:39,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:39,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-09-24 19:03:39,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:39,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:39,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:39,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:03:39,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:39,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:03:39,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:39,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:03:39,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:39,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 19:03:39,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:03:39,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-09-24 19:03:39,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:39,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:39,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:39,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:03:39,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:39,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:03:39,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:39,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:39,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 19:03:39,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:39,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:39,958 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 19:03:39,959 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1820848091] [2020-09-24 19:03:39,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:03:39,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 19:03:39,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615962592] [2020-09-24 19:03:39,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 19:03:39,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:03:39,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 19:03:39,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-24 19:03:39,962 INFO L87 Difference]: Start difference. First operand 693 states and 813 transitions. Second operand 10 states. [2020-09-24 19:03:40,515 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 19:03:41,798 WARN L193 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-09-24 19:03:42,411 WARN L193 SmtUtils]: Spent 562.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 190 [2020-09-24 19:03:42,768 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 19:03:43,102 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 19:03:43,424 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 19:03:43,744 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 19:03:44,057 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 19:03:44,539 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 19:03:46,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:03:46,556 INFO L93 Difference]: Finished difference Result 2006 states and 2530 transitions. [2020-09-24 19:03:46,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-24 19:03:46,557 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 195 [2020-09-24 19:03:46,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:03:46,569 INFO L225 Difference]: With dead ends: 2006 [2020-09-24 19:03:46,569 INFO L226 Difference]: Without dead ends: 1423 [2020-09-24 19:03:46,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=152, Invalid=400, Unknown=0, NotChecked=0, Total=552 [2020-09-24 19:03:46,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1423 states. [2020-09-24 19:03:46,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1423 to 1213. [2020-09-24 19:03:46,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1213 states. [2020-09-24 19:03:46,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1451 transitions. [2020-09-24 19:03:46,762 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1451 transitions. Word has length 195 [2020-09-24 19:03:46,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:03:46,763 INFO L479 AbstractCegarLoop]: Abstraction has 1213 states and 1451 transitions. [2020-09-24 19:03:46,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 19:03:46,763 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1451 transitions. [2020-09-24 19:03:46,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-09-24 19:03:46,767 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:03:46,767 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, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:03:46,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 19:03:46,768 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:03:46,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:03:46,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1026625680, now seen corresponding path program 1 times [2020-09-24 19:03:46,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:03:46,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700883081] [2020-09-24 19:03:46,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:03:46,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 19:03:46,832 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 19:03:46,832 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 19:03:46,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 19:03:46,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 07:03:46 BoogieIcfgContainer [2020-09-24 19:03:46,890 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 19:03:46,893 INFO L168 Benchmark]: Toolchain (without parser) took 43357.68 ms. Allocated memory was 148.4 MB in the beginning and 736.1 MB in the end (delta: 587.7 MB). Free memory was 103.9 MB in the beginning and 237.7 MB in the end (delta: -133.9 MB). Peak memory consumption was 453.9 MB. Max. memory is 7.1 GB. [2020-09-24 19:03:46,894 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 148.4 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 19:03:46,902 INFO L168 Benchmark]: CACSL2BoogieTranslator took 760.66 ms. Allocated memory was 148.4 MB in the beginning and 205.0 MB in the end (delta: 56.6 MB). Free memory was 103.2 MB in the beginning and 174.3 MB in the end (delta: -71.1 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. [2020-09-24 19:03:46,905 INFO L168 Benchmark]: Boogie Preprocessor took 104.23 ms. Allocated memory is still 205.0 MB. Free memory was 174.3 MB in the beginning and 170.4 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-09-24 19:03:46,909 INFO L168 Benchmark]: RCFGBuilder took 1448.54 ms. Allocated memory was 205.0 MB in the beginning and 233.8 MB in the end (delta: 28.8 MB). Free memory was 170.4 MB in the beginning and 172.3 MB in the end (delta: -1.9 MB). Peak memory consumption was 81.1 MB. Max. memory is 7.1 GB. [2020-09-24 19:03:46,910 INFO L168 Benchmark]: TraceAbstraction took 41035.01 ms. Allocated memory was 233.8 MB in the beginning and 736.1 MB in the end (delta: 502.3 MB). Free memory was 172.3 MB in the beginning and 237.7 MB in the end (delta: -65.5 MB). Peak memory consumption was 436.8 MB. Max. memory is 7.1 GB. [2020-09-24 19:03:46,922 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 148.4 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 760.66 ms. Allocated memory was 148.4 MB in the beginning and 205.0 MB in the end (delta: 56.6 MB). Free memory was 103.2 MB in the beginning and 174.3 MB in the end (delta: -71.1 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 104.23 ms. Allocated memory is still 205.0 MB. Free memory was 174.3 MB in the beginning and 170.4 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1448.54 ms. Allocated memory was 205.0 MB in the beginning and 233.8 MB in the end (delta: 28.8 MB). Free memory was 170.4 MB in the beginning and 172.3 MB in the end (delta: -1.9 MB). Peak memory consumption was 81.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 41035.01 ms. Allocated memory was 233.8 MB in the beginning and 736.1 MB in the end (delta: 502.3 MB). Free memory was 172.3 MB in the beginning and 237.7 MB in the end (delta: -65.5 MB). Peak memory consumption was 436.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 439]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L450] int waterLevel = 1; [L451] int methaneLevelCritical = 0; [L617] int pumpRunning = 0; [L618] int systemActive = 1; [L848] int cleanupTimeShifts = 4; [L921] int retValue_acc ; [L922] int tmp ; [L926] FCALL select_helpers() [L927] FCALL select_features() [L928] CALL, EXPR valid_product() [L839] int retValue_acc ; [L842] retValue_acc = 1 [L843] return (retValue_acc); [L928] RET, EXPR valid_product() [L928] tmp = valid_product() [L930] COND TRUE \read(tmp) [L932] FCALL setup() [L933] CALL runTest() [L915] CALL test() [L548] int splverifierCounter ; [L549] int tmp ; [L550] int tmp___0 ; [L551] int tmp___1 ; [L552] int tmp___2 ; [L555] splverifierCounter = 0 [L557] COND TRUE 1 [L559] COND TRUE splverifierCounter < 4 [L565] tmp = __VERIFIER_nondet_int() [L567] COND TRUE \read(tmp) [L569] CALL waterRise() [L468] COND TRUE waterLevel < 2 [L469] waterLevel = waterLevel + 1 [L569] RET waterRise() [L575] tmp___0 = __VERIFIER_nondet_int() [L577] COND TRUE \read(tmp___0) [L579] CALL changeMethaneLevel() [L480] COND FALSE !(\read(methaneLevelCritical)) [L483] methaneLevelCritical = 1 [L579] RET changeMethaneLevel() [L585] tmp___2 = __VERIFIER_nondet_int() [L587] COND TRUE \read(tmp___2) [L602] CALL timeShift() [L624] COND FALSE !(\read(pumpRunning)) [L631] COND TRUE \read(systemActive) [L633] CALL processEnvironment() [L679] int tmp ; [L682] COND FALSE !(\read(pumpRunning)) [L697] CALL processEnvironment__wrappee__highWaterSensor() [L653] int tmp ; [L656] COND TRUE ! pumpRunning [L658] CALL, EXPR isHighWaterLevel() [L776] int retValue_acc ; [L777] int tmp ; [L778] int tmp___0 ; [L782] CALL, EXPR isHighWaterSensorDry() [L530] int retValue_acc ; [L533] COND FALSE !(waterLevel < 2) [L537] retValue_acc = 0 [L538] return (retValue_acc); [L782] RET, EXPR isHighWaterSensorDry() [L782] tmp = isHighWaterSensorDry() [L784] COND FALSE !(\read(tmp)) [L787] tmp___0 = 1 [L789] retValue_acc = tmp___0 [L790] return (retValue_acc); [L658] RET, EXPR isHighWaterLevel() [L658] tmp = isHighWaterLevel() [L660] COND TRUE \read(tmp) [L662] CALL activatePump() [L707] pumpRunning = 1 [L662] RET activatePump() [L697] RET processEnvironment__wrappee__highWaterSensor() [L633] RET processEnvironment() [L639] CALL __utac_acc__Specification1_spec__1() [L410] int tmp ; [L411] int tmp___0 ; [L415] CALL, EXPR isMethaneLevelCritical() [L489] int retValue_acc ; [L492] retValue_acc = methaneLevelCritical [L493] return (retValue_acc); [L415] RET, EXPR isMethaneLevelCritical() [L415] tmp = isMethaneLevelCritical() [L417] COND TRUE \read(tmp) [L419] CALL, EXPR isPumpRunning() [L731] int retValue_acc ; [L734] retValue_acc = pumpRunning [L735] return (retValue_acc); [L419] RET, EXPR isPumpRunning() [L419] tmp___0 = isPumpRunning() [L421] COND TRUE \read(tmp___0) [L423] CALL __automaton_fail() [L439] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 624 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 40.8s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 26.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1752 SDtfs, 2775 SDslu, 2698 SDs, 0 SdLazy, 5548 SolverSat, 980 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 237 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 12.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1213occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 7 MinimizatonAttempts, 523 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 12.9s InterpolantComputationTime, 1402 NumberOfCodeBlocks, 1402 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1195 ConstructedInterpolants, 0 QuantifiedInterpolants, 494928 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...