/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product08.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:12:39,515 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:12:39,519 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:12:39,546 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:12:39,547 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:12:39,548 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:12:39,550 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:12:39,552 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:12:39,554 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:12:39,555 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:12:39,556 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:12:39,558 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:12:39,558 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:12:39,559 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:12:39,560 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:12:39,564 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:12:39,565 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:12:39,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:12:39,571 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:12:39,575 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:12:39,579 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:12:39,582 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:12:39,584 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:12:39,587 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:12:39,590 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:12:39,590 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:12:39,590 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:12:39,594 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:12:39,595 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:12:39,599 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:12:39,599 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:12:39,600 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:12:39,602 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:12:39,604 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:12:39,605 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:12:39,606 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:12:39,606 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:12:39,607 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:12:39,607 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:12:39,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:12:39,611 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:12:39,612 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 20:12:39,674 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:12:39,674 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:12:39,676 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:12:39,676 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:12:39,676 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:12:39,676 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:12:39,677 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:12:39,678 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:12:39,678 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:12:39,678 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:12:39,678 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:12:39,678 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:12:39,679 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:12:39,680 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:12:39,680 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:12:39,680 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:12:39,680 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:12:39,680 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:12:39,681 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:12:39,681 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:12:39,681 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:12:39,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:12:39,681 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:12:39,682 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:12:39,682 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:12:39,683 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:12:39,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:12:39,683 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:12:39,683 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:12:39,683 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; [2020-09-24 20:12:40,168 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:12:40,186 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:12:40,190 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:12:40,193 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:12:40,193 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:12:40,194 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product08.cil.c [2020-09-24 20:12:40,272 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ec8ec5339/cfb3790be13c4f75a15f8d6fc43b2035/FLAGa9b88d321 [2020-09-24 20:12:40,891 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:12:40,892 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product08.cil.c [2020-09-24 20:12:40,914 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ec8ec5339/cfb3790be13c4f75a15f8d6fc43b2035/FLAGa9b88d321 [2020-09-24 20:12:41,142 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ec8ec5339/cfb3790be13c4f75a15f8d6fc43b2035 [2020-09-24 20:12:41,156 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:12:41,162 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:12:41,163 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:12:41,163 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:12:41,167 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:12:41,168 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:12:41" (1/1) ... [2020-09-24 20:12:41,173 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c46e88b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:12:41, skipping insertion in model container [2020-09-24 20:12:41,173 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:12:41" (1/1) ... [2020-09-24 20:12:41,182 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:12:41,235 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:12:41,603 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:12:41,730 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:12:41,848 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:12:41,880 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:12:41,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:12:41 WrapperNode [2020-09-24 20:12:41,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:12:41,882 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:12:41,882 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:12:41,882 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:12:41,896 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:12:41" (1/1) ... [2020-09-24 20:12:41,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:12:41" (1/1) ... [2020-09-24 20:12:41,918 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:12:41" (1/1) ... [2020-09-24 20:12:41,918 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:12:41" (1/1) ... [2020-09-24 20:12:41,951 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:12:41" (1/1) ... [2020-09-24 20:12:41,962 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:12:41" (1/1) ... [2020-09-24 20:12:41,967 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:12:41" (1/1) ... [2020-09-24 20:12:41,975 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:12:41,975 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:12:41,975 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:12:41,975 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:12:41,977 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:12:41" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:12:42,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:12:42,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:12:42,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 20:12:42,054 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-24 20:12:42,054 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 20:12:42,054 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 20:12:42,054 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 20:12:42,055 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 20:12:42,055 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 20:12:42,055 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 20:12:42,055 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 20:12:42,055 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 20:12:42,056 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 20:12:42,056 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 20:12:42,056 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 20:12:42,056 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 20:12:42,056 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 20:12:42,057 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 20:12:42,057 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 20:12:42,057 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 20:12:42,057 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 20:12:42,057 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 20:12:42,058 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 20:12:42,058 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 20:12:42,058 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 20:12:42,058 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 20:12:42,058 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-24 20:12:42,059 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-24 20:12:42,059 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 20:12:42,059 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 20:12:42,059 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 20:12:42,059 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 20:12:42,059 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 20:12:42,060 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 20:12:42,060 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 20:12:42,060 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 20:12:42,060 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:12:42,060 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:12:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:12:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 20:12:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 20:12:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 20:12:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 20:12:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 20:12:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-24 20:12:42,062 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 20:12:42,062 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 20:12:42,062 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 20:12:42,062 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 20:12:42,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 20:12:42,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 20:12:42,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 20:12:42,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 20:12:42,063 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 20:12:42,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 20:12:42,063 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 20:12:42,063 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 20:12:42,064 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 20:12:42,064 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 20:12:42,064 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 20:12:42,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 20:12:42,064 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 20:12:42,064 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 20:12:42,065 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 20:12:42,065 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 20:12:42,065 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 20:12:42,065 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-24 20:12:42,065 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-24 20:12:42,065 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 20:12:42,066 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 20:12:42,066 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 20:12:42,066 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 20:12:42,066 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 20:12:42,066 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 20:12:42,066 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 20:12:42,067 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 20:12:42,067 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 20:12:42,067 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 20:12:42,067 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 20:12:42,067 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 20:12:42,067 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 20:12:42,068 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 20:12:42,068 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 20:12:42,068 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 20:12:42,068 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:12:42,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:12:42,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 20:12:42,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:12:43,265 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:12:43,266 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 20:12:43,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:12:43 BoogieIcfgContainer [2020-09-24 20:12:43,280 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:12:43,282 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:12:43,282 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:12:43,286 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:12:43,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:12:41" (1/3) ... [2020-09-24 20:12:43,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44f4e8c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:12:43, skipping insertion in model container [2020-09-24 20:12:43,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:12:41" (2/3) ... [2020-09-24 20:12:43,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44f4e8c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:12:43, skipping insertion in model container [2020-09-24 20:12:43,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:12:43" (3/3) ... [2020-09-24 20:12:43,291 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product08.cil.c [2020-09-24 20:12:43,304 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:12:43,318 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:12:43,340 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:12:43,383 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:12:43,383 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:12:43,384 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:12:43,384 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:12:43,384 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:12:43,384 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:12:43,385 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:12:43,385 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:12:43,425 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states. [2020-09-24 20:12:43,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-24 20:12:43,456 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:12:43,457 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, 1] [2020-09-24 20:12:43,458 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:12:43,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:12:43,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1628156155, now seen corresponding path program 1 times [2020-09-24 20:12:43,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:12:43,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848605725] [2020-09-24 20:12:43,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:12:43,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:12:43,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:12:44,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:12:45,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:12:48,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:12:48,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-24 20:12:48,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:12:48,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-24 20:12:48,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:12:48,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 20:12:48,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-24 20:12:48,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-24 20:12:48,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 20:12:49,276 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 20:12:49,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:12:49,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:12:49,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:12:49,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:12:49,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 20:12:49,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:12:49,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-09-24 20:12:49,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:12:49,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:12:49,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:12:49,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 20:12:49,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:12:49,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 20:12:49,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:12:49,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:12:49,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:12:49,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:12:49,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:12:49,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:12:49,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:12:49,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:12:49,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:12:49,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:12:49,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:12:49,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 20:12:49,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:12:49,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:12:49,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:12:49,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:12:49,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:12:49,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:12:49,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:12:49,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:12:49,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:12:49,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:12:49,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:12:49,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 20:12:49,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:12:49,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:12:49,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:12:49,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:12:49,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:12:49,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 20:12:49,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:12:49,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:12:49,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:12:49,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:12:49,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:12:49,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 20:12:49,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:12:49,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:12:49,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:12:49,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:12:49,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:12:49,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:12:49,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:12:49,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:12:49,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:12:49,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:12:49,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:12:49,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-24 20:12:49,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:12:49,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:12:49,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:12:49,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:12:49,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:12:49,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:12:49,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:12:49,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:12:49,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:12:49,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:12:49,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:12:49,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-24 20:12:49,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:12:49,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:12:49,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:12:49,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:12:49,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:12:49,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 20:12:49,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:12:49,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:12:49,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:12:49,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:12:49,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:12:49,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-24 20:12:49,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:12:49,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:12:49,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:12:49,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:12:49,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:12:49,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:12:49,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:12:49,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:12:49,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 20:12:49,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:12:49,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:12:49,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:12:49,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [848605725] [2020-09-24 20:12:49,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:12:49,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 20:12:49,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253321] [2020-09-24 20:12:49,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 20:12:49,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:12:49,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 20:12:49,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:12:49,898 INFO L87 Difference]: Start difference. First operand 285 states. Second operand 8 states. [2020-09-24 20:12:50,437 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 20:12:52,428 WARN L193 SmtUtils]: Spent 565.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-09-24 20:12:53,040 WARN L193 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 190 [2020-09-24 20:12:53,369 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 20:12:53,741 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 20:12:54,163 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 20:12:54,465 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 20:12:54,804 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 20:12:55,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:12:55,820 INFO L93 Difference]: Finished difference Result 575 states and 712 transitions. [2020-09-24 20:12:55,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 20:12:55,828 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 153 [2020-09-24 20:12:55,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:12:55,849 INFO L225 Difference]: With dead ends: 575 [2020-09-24 20:12:55,849 INFO L226 Difference]: Without dead ends: 401 [2020-09-24 20:12:55,861 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2020-09-24 20:12:55,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2020-09-24 20:12:55,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 354. [2020-09-24 20:12:55,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2020-09-24 20:12:55,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 400 transitions. [2020-09-24 20:12:55,991 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 400 transitions. Word has length 153 [2020-09-24 20:12:55,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:12:55,992 INFO L479 AbstractCegarLoop]: Abstraction has 354 states and 400 transitions. [2020-09-24 20:12:55,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 20:12:55,992 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 400 transitions. [2020-09-24 20:12:55,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-24 20:12:55,997 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:12:55,997 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] [2020-09-24 20:12:55,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:12:55,998 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:12:55,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:12:55,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1530381970, now seen corresponding path program 1 times [2020-09-24 20:12:56,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:12:56,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1747868315] [2020-09-24 20:12:56,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:12:56,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:12:56,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:12:56,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:12:56,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-09-24 20:12:56,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:12:56,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 469 [2020-09-24 20:12:56,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:12:56,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:12:56,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-09-24 20:12:56,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:12:56,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:12:56,815 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 20:12:56,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:12:56,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:12:56,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:12:56,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:12:56,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 20:12:56,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:12:56,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-24 20:12:56,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:12:56,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:12:56,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:12:56,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:12:56,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:12:56,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 20:12:56,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:12:56,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:12:56,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:12:56,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:12:56,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:12:56,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:12:56,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:12:56,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:12:56,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:12:56,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:12:56,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:12:56,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 20:12:56,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:12:56,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:12:56,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:12:56,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:12:56,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:12:56,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:12:56,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:12:56,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:12:56,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:12:56,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:12:56,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:12:56,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 20:12:56,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:12:56,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:12:56,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:12:56,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:12:56,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:12:56,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 20:12:56,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:12:56,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:12:56,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:12:56,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:12:56,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:12:56,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 20:12:56,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:12:56,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:12:56,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:12:56,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:12:56,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:12:56,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:12:56,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:12:56,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:12:56,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:12:56,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:12:56,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:12:57,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-24 20:12:57,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:12:57,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:12:57,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:12:57,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:12:57,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:12:57,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:12:57,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:12:57,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:12:57,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:12:57,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:12:57,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:12:57,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-24 20:12:57,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:12:57,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:12:57,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:12:57,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 20:12:57,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:12:57,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:12:57,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:12:57,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:12:57,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:12:57,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 20:12:57,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:12:57,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-09-24 20:12:57,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:12:57,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:12:57,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:12:57,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:12:57,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:12:57,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:12:57,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:12:57,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:12:57,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 20:12:57,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:12:57,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:12:57,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-09-24 20:12:57,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:12:57,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:12:57,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:12:57,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:12:57,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:12:57,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:12:57,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:12:57,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:12:57,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 20:12:57,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:12:57,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:12:57,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-24 20:12:57,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:12:57,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:12:57,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:12:57,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:12:57,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:12:57,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:12:57,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:12:57,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:12:57,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 20:12:57,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:12:57,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:12:57,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:12:57,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1747868315] [2020-09-24 20:12:57,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:12:57,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 20:12:57,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180508385] [2020-09-24 20:12:57,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 20:12:57,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:12:57,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 20:12:57,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:12:57,093 INFO L87 Difference]: Start difference. First operand 354 states and 400 transitions. Second operand 6 states. [2020-09-24 20:12:57,727 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 20:13:00,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:13:00,462 INFO L93 Difference]: Finished difference Result 966 states and 1199 transitions. [2020-09-24 20:13:00,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 20:13:00,464 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 172 [2020-09-24 20:13:00,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:13:00,479 INFO L225 Difference]: With dead ends: 966 [2020-09-24 20:13:00,480 INFO L226 Difference]: Without dead ends: 722 [2020-09-24 20:13:00,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:13:00,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2020-09-24 20:13:00,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 577. [2020-09-24 20:13:00,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 577 states. [2020-09-24 20:13:00,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 667 transitions. [2020-09-24 20:13:00,591 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 667 transitions. Word has length 172 [2020-09-24 20:13:00,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:13:00,592 INFO L479 AbstractCegarLoop]: Abstraction has 577 states and 667 transitions. [2020-09-24 20:13:00,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 20:13:00,593 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 667 transitions. [2020-09-24 20:13:00,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-24 20:13:00,597 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:13:00,597 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] [2020-09-24 20:13:00,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:13:00,598 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:13:00,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:13:00,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1646692452, now seen corresponding path program 1 times [2020-09-24 20:13:00,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:13:00,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372240164] [2020-09-24 20:13:00,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:13:00,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:00,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:00,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:00,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:05,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:05,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-24 20:13:05,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:13:05,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-24 20:13:05,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:05,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:13:05,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-24 20:13:05,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 20:13:05,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:13:05,966 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 20:13:05,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:13:06,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:06,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:06,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:06,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 20:13:06,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:06,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-09-24 20:13:06,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:06,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:13:06,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:13:06,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 20:13:06,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:13:06,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 20:13:06,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:06,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:06,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:06,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:13:06,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:06,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:13:06,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:06,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:13:06,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:13:06,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:13:06,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:13:06,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 20:13:06,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:06,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:06,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:06,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:13:06,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:06,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 20:13:06,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:06,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:13:06,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:13:06,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:13:06,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:13:06,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 20:13:06,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:06,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:06,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:06,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:13:06,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:06,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:13:06,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:06,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:13:06,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:13:06,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:13:06,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:13:06,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 20:13:06,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:06,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:06,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:06,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:13:06,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:06,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:13:06,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:06,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:13:06,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:13:06,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:13:06,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:13:06,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-24 20:13:06,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:06,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:06,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:06,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:13:06,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:06,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:13:06,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:06,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:13:06,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 20:13:06,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:13:06,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:13:06,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-09-24 20:13:06,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:06,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:06,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:06,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 20:13:06,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:06,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:13:06,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:06,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:13:06,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 20:13:06,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:13:06,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:13:06,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:13:06,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:06,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:06,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:06,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:13:06,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:06,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:13:06,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:06,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:13:06,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:13:06,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:13:06,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:13:06,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-24 20:13:06,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:06,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:06,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:06,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:13:06,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:06,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:13:06,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:06,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:13:06,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 20:13:06,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:13:06,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:13:06,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-24 20:13:06,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:06,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:06,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:06,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:13:06,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:06,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:13:06,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:06,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:13:06,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 20:13:06,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:13:06,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:13:06,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-09-24 20:13:06,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:13:06,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:13:06,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:13:06,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:13:06,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:13:06,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:13:06,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:13:06,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:13:06,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 20:13:06,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:13:06,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:13:06,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:13:06,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1372240164] [2020-09-24 20:13:06,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:13:06,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 20:13:06,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592627718] [2020-09-24 20:13:06,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 20:13:06,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:13:06,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 20:13:06,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:13:06,433 INFO L87 Difference]: Start difference. First operand 577 states and 667 transitions. Second operand 6 states. [2020-09-24 20:13:06,879 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 20:13:07,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:13:07,659 INFO L93 Difference]: Finished difference Result 962 states and 1154 transitions. [2020-09-24 20:13:07,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 20:13:07,660 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 167 [2020-09-24 20:13:07,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:13:07,664 INFO L225 Difference]: With dead ends: 962 [2020-09-24 20:13:07,664 INFO L226 Difference]: Without dead ends: 474 [2020-09-24 20:13:07,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-09-24 20:13:07,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2020-09-24 20:13:07,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 443. [2020-09-24 20:13:07,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2020-09-24 20:13:07,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 480 transitions. [2020-09-24 20:13:07,731 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 480 transitions. Word has length 167 [2020-09-24 20:13:07,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:13:07,732 INFO L479 AbstractCegarLoop]: Abstraction has 443 states and 480 transitions. [2020-09-24 20:13:07,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 20:13:07,732 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 480 transitions. [2020-09-24 20:13:07,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-24 20:13:07,735 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:13:07,735 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] [2020-09-24 20:13:07,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:13:07,736 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:13:07,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:13:07,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1990325339, now seen corresponding path program 1 times [2020-09-24 20:13:07,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:13:07,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070088500] [2020-09-24 20:13:07,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:13:07,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 20:13:07,802 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 20:13:07,803 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 20:13:07,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 20:13:07,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 08:13:07 BoogieIcfgContainer [2020-09-24 20:13:07,836 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 20:13:07,838 INFO L168 Benchmark]: Toolchain (without parser) took 26681.06 ms. Allocated memory was 138.4 MB in the beginning and 572.5 MB in the end (delta: 434.1 MB). Free memory was 100.2 MB in the beginning and 432.8 MB in the end (delta: -332.7 MB). Peak memory consumption was 101.5 MB. Max. memory is 7.1 GB. [2020-09-24 20:13:07,839 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 20:13:07,841 INFO L168 Benchmark]: CACSL2BoogieTranslator took 718.50 ms. Allocated memory was 138.4 MB in the beginning and 203.9 MB in the end (delta: 65.5 MB). Free memory was 99.5 MB in the beginning and 174.1 MB in the end (delta: -74.6 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. [2020-09-24 20:13:07,841 INFO L168 Benchmark]: Boogie Preprocessor took 93.22 ms. Allocated memory is still 203.9 MB. Free memory was 173.4 MB in the beginning and 169.9 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. [2020-09-24 20:13:07,842 INFO L168 Benchmark]: RCFGBuilder took 1305.10 ms. Allocated memory was 203.9 MB in the beginning and 234.4 MB in the end (delta: 30.4 MB). Free memory was 169.9 MB in the beginning and 183.1 MB in the end (delta: -13.3 MB). Peak memory consumption was 88.6 MB. Max. memory is 7.1 GB. [2020-09-24 20:13:07,843 INFO L168 Benchmark]: TraceAbstraction took 24554.43 ms. Allocated memory was 234.4 MB in the beginning and 572.5 MB in the end (delta: 338.2 MB). Free memory was 181.7 MB in the beginning and 432.8 MB in the end (delta: -251.1 MB). Peak memory consumption was 87.0 MB. Max. memory is 7.1 GB. [2020-09-24 20:13:07,847 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 718.50 ms. Allocated memory was 138.4 MB in the beginning and 203.9 MB in the end (delta: 65.5 MB). Free memory was 99.5 MB in the beginning and 174.1 MB in the end (delta: -74.6 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 93.22 ms. Allocated memory is still 203.9 MB. Free memory was 173.4 MB in the beginning and 169.9 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1305.10 ms. Allocated memory was 203.9 MB in the beginning and 234.4 MB in the end (delta: 30.4 MB). Free memory was 169.9 MB in the beginning and 183.1 MB in the end (delta: -13.3 MB). Peak memory consumption was 88.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 24554.43 ms. Allocated memory was 234.4 MB in the beginning and 572.5 MB in the end (delta: 338.2 MB). Free memory was 181.7 MB in the beginning and 432.8 MB in the end (delta: -251.1 MB). Peak memory consumption was 87.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 532]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L247] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L448] int waterLevel = 1; [L449] int methaneLevelCritical = 0; [L613] int pumpRunning = 0; [L614] int systemActive = 1; [L807] int cleanupTimeShifts = 4; [L880] int retValue_acc ; [L881] int tmp ; [L885] FCALL select_helpers() [L886] FCALL select_features() [L887] CALL, EXPR valid_product() [L798] int retValue_acc ; [L801] retValue_acc = 1 [L802] return (retValue_acc); [L887] RET, EXPR valid_product() [L887] tmp = valid_product() [L889] COND TRUE \read(tmp) [L891] FCALL setup() [L892] CALL runTest() [L874] CALL test() [L542] int splverifierCounter ; [L543] int tmp ; [L544] int tmp___0 ; [L545] int tmp___1 ; [L546] int tmp___2 ; [L549] splverifierCounter = 0 [L551] COND TRUE 1 [L553] COND TRUE splverifierCounter < 4 [L559] tmp = __VERIFIER_nondet_int() [L561] COND TRUE \read(tmp) [L563] CALL waterRise() [L466] COND TRUE waterLevel < 2 [L467] waterLevel = waterLevel + 1 [L563] RET waterRise() [L569] tmp___0 = __VERIFIER_nondet_int() [L571] COND FALSE !(\read(tmp___0)) [L579] tmp___2 = __VERIFIER_nondet_int() [L581] COND FALSE !(\read(tmp___2)) [L587] tmp___1 = __VERIFIER_nondet_int() [L589] COND TRUE \read(tmp___1) [L591] CALL stopSystem() [L749] COND FALSE !(\read(pumpRunning)) [L756] systemActive = 0 [L591] RET stopSystem() [L598] CALL timeShift() [L620] COND FALSE !(\read(pumpRunning)) [L627] COND FALSE !(\read(systemActive)) [L635] CALL __utac_acc__Specification3_spec__1() [L45] int tmp ; [L46] int tmp___0 ; [L47] int tmp___1 ; [L51] CALL, EXPR isMethaneLevelCritical() [L487] int retValue_acc ; [L490] retValue_acc = methaneLevelCritical [L491] return (retValue_acc); [L51] RET, EXPR isMethaneLevelCritical() [L51] tmp = isMethaneLevelCritical() [L53] COND FALSE !(\read(tmp)) [L57] CALL, EXPR getWaterLevel() [L519] int retValue_acc ; [L522] retValue_acc = waterLevel [L523] return (retValue_acc); [L57] RET, EXPR getWaterLevel() [L57] tmp___0 = getWaterLevel() [L59] COND TRUE tmp___0 == 2 [L61] CALL, EXPR isPumpRunning() [L701] int retValue_acc ; [L704] retValue_acc = pumpRunning [L705] return (retValue_acc); [L61] RET, EXPR isPumpRunning() [L61] tmp___1 = isPumpRunning() [L63] COND FALSE !(\read(tmp___1)) [L67] CALL __automaton_fail() [L532] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 37 procedures, 600 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 24.4s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 10.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 688 SDtfs, 1580 SDslu, 907 SDs, 0 SdLazy, 1853 SolverSat, 563 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 106 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=577occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 3 MinimizatonAttempts, 223 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 12.7s InterpolantComputationTime, 669 NumberOfCodeBlocks, 669 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 489 ConstructedInterpolants, 0 QuantifiedInterpolants, 199582 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...